Package: chromium
Version: 54.0.2840.101-1

When opening e.g. [0], chromium crashes (Aw snap!).
When attempting to reproduce debugging info for this, I wanted to run chromium 
in a clean profile. When running chromium for the first time without a profile, 
it also crashed.
In the attached gdb-chromium.txt, chromium crashes before ever showing any 
window.
Then I was able to run chromium without the debugger and it did start up and 
initialized the profile.
Then I was able to open the concerned website and produce the crash, in 
gdb-chromium-1.txt.


[0] 
https://medium.com/@juergen_thomann/memory-hotplug-with-qemu-kvm-and-libvirt-558f1c635972


-- System Information:
Debian Release: stretch/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable'), (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.8.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages chromium depends on:
ii  libasound2           1.1.2-1
ii  libatk1.0-0          2.22.0-1
ii  libavcodec57         7:3.2-2
ii  libavformat57        7:3.2-2
ii  libavutil55          7:3.2-2
ii  libc6                2.24-5
ii  libcairo2            1.14.6-1.1
ii  libcups2             2.2.1-2
ii  libdbus-1-3          1.10.12-1
ii  libevent-2.0-5       2.0.21-stable-2+b1
ii  libexpat1            2.2.0-1
ii  libflac8             1.3.1-4
ii  libfontconfig1       2.11.0-6.7
ii  libfreetype6         2.6.3-3+b1
ii  libgcc1              1:6.2.0-13
ii  libgdk-pixbuf2.0-0   2.36.0-1
ii  libglib2.0-0         2.50.2-1
ii  libgtk2.0-0          2.24.31-1
ii  libharfbuzz0b        1.2.7-1+b1
ii  libjpeg62-turbo      1:1.5.1-2
ii  libminizip1          1.1-8
ii  libnettle6           3.3-1
ii  libnspr4             2:4.12-6
ii  libnss3              2:3.26.2-1
ii  libpango-1.0-0       1.40.3-3
ii  libpangocairo-1.0-0  1.40.3-3
ii  libpng16-16          1.6.26-2
ii  libpulse0            9.0-4
ii  libre2-3             20161101+dfsg-2
ii  libsnappy1v5         1.1.3-3
ii  libstdc++6           6.2.0-13
ii  libvpx4              1.6.0-3
ii  libwebp6             0.5.1-2
ii  libwebpdemux2        0.5.1-2
ii  libx11-6             2:1.6.3-1
ii  libxcomposite1       1:0.4.4-1
ii  libxcursor1          1:1.1.14-1+b1
ii  libxdamage1          1:1.1.4-2+b1
ii  libxext6             2:1.3.3-1
ii  libxfixes3           1:5.0.2-1
ii  libxi6               2:1.7.6-1.1
ii  libxml2              2.9.4+dfsg1-2.1
ii  libxrandr2           2:1.5.0-1
ii  libxrender1          1:0.9.9-2
ii  libxslt1.1           1.1.29-2
ii  libxss1              1:1.2.2-1
ii  libxtst6             2:1.2.2-1+b1
ii  x11-utils            7.7+3
ii  xdg-utils            1.1.1-1
ii  zlib1g               1:1.2.8.dfsg-2+b3

Versions of packages chromium recommends:
ii  fonts-liberation  1:1.07.4-2

Versions of packages chromium suggests:
pn  chromium-l10n  <none>

-- no debconf information

# Env:
#     LD_LIBRARY_PATH=
#                PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
#            GTK_PATH=
#      CHROMIUM_FLAGS= --show-component-extension-options 
--ignore-gpu-blacklist --disable-background-networking 
--ppapi-flash-path=/usr/lib/pepperflashplugin-nonfree/libpepflashplayer.so 
--ppapi-flash-version=22.0.0.209
/usr/bin/gdb /usr/lib/chromium/chromium -x /tmp/chromiumargs.yhF78W
GNU gdb (Debian 7.11.1-2+b1) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/lib/chromium/chromium...Reading symbols from 
/usr/lib/debug/.build-id/e2/177860d089e24ca7ad12f0d0e8fb7073744cf5.debug...(no 
debugging symbols found)...done.
(no debugging symbols found)...done.
(gdb) handle SIG33 pass nostop noprint
Signal        Stop      Print   Pass to program Description
SIG33         No        No      Yes             Real-time event 33
(gdb) set pagination 0
(gdb) run
Starting program: /usr/lib/chromium/chromium --show-component-extension-options 
--ignore-gpu-blacklist --disable-background-networking 
--ppapi-flash-path=/usr/lib/pepperflashplugin-nonfree/libpepflashplayer.so 
--ppapi-flash-version=22.0.0.209 --single-process 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffdddad700 (LWP 22129)]
[New Thread 0x7fffdd5ac700 (LWP 22134)]
[New Thread 0x7fffdc99d700 (LWP 22135)]
[New Thread 0x7fffdc19c700 (LWP 22136)]
[New Thread 0x7fffdb99b700 (LWP 22137)]
[New Thread 0x7fffdb19a700 (LWP 22138)]
[New Thread 0x7fffda999700 (LWP 22139)]
[New Thread 0x7fffda198700 (LWP 22140)]
[New Thread 0x7fffd8ec9700 (LWP 22141)]
[New Thread 0x7fffd86c8700 (LWP 22142)]
[New Thread 0x7fffd7ec7700 (LWP 22143)]
[New Thread 0x7fffd76c6700 (LWP 22144)]
[New Thread 0x7fffd6ec5700 (LWP 22145)]
[New Thread 0x7fffd66c4700 (LWP 22146)]
[New Thread 0x7fffd5ec3700 (LWP 22147)]
[New Thread 0x7fffd56c2700 (LWP 22148)]
[New Thread 0x7fffd4ec1700 (LWP 22149)]
[New Thread 0x7fffd46c0700 (LWP 22150)]
[New Thread 0x7fffd3ebf700 (LWP 22151)]
[New Thread 0x7fffcaec0700 (LWP 22159)]
[New Thread 0x7fffca6bf700 (LWP 22160)]
[New Thread 0x7fffc9ebe700 (LWP 22161)]
[New Thread 0x7fffc941c700 (LWP 22164)]
[New Thread 0x7fffc8c1b700 (LWP 22165)]
[New Thread 0x7fffc8176700 (LWP 22166)]
[New Thread 0x7fffc7975700 (LWP 22167)]
[22124:22147:1126/122239:ERROR:proxy_service_factory.cc(127)] Cannot use V8 
Proxy resolver in single process mode.
[22124:22147:1126/122239:ERROR:proxy_service_factory.cc(127)] Cannot use V8 
Proxy resolver in single process mode.
[New Thread 0x7fffc5e0c700 (LWP 22168)]
[New Thread 0x7fffc560b700 (LWP 22169)]
[New Thread 0x7fffc43f7700 (LWP 22171)]
[New Thread 0x7fffc4bf8700 (LWP 22170)]
[New Thread 0x7fffc3bf6700 (LWP 22172)]

Thread 31 "import_thread" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffc4bf8700 (LWP 22170)]
0x00005555595843eb in blink::WebData::assign(char const*, unsigned long) ()
(gdb) backtrace
#0  0x00005555595843eb in blink::WebData::assign(char const*, unsigned long) ()
#1  0x0000555559522486 in content::ImageDecoder::Decode(unsigned char const*, 
unsigned long) const ()
#2  0x00005555595224ed in content::DecodeImage(unsigned char const*, gfx::Size 
const&, unsigned long) ()
#3  0x000055555aeade3e in importer::ReencodeFavicon(unsigned char const*, 
unsigned long, std::vector<unsigned char, std::allocator<unsigned char> >*) ()
#4  0x000055555aead94f in 
bookmark_html_reader::ImportBookmarksFile(base::Callback<bool (), 
(base::internal::CopyMode)1> const&, base::Callback<bool (GURL const&), 
(base::internal::CopyMode)1> const&, base::FilePath const&, 
std::vector<ImportedBookmarkEntry, std::allocator<ImportedBookmarkEntry> >*, 
std::vector<importer::SearchEngineInfo, 
std::allocator<importer::SearchEngineInfo> >*, 
std::vector<favicon_base::FaviconUsageData, 
std::allocator<favicon_base::FaviconUsageData> >*) ()
#5  0x000055555aea1b51 in 
BookmarksFileImporter::StartImport(importer::SourceProfile const&, unsigned 
short, ImporterBridge*) ()
#6  0x00005555579b9550 in base::debug::TaskAnnotator::RunTask(char const*, 
base::PendingTask const&) ()
#7  0x0000555557955fca in base::MessageLoop::RunTask(base::PendingTask const&) 
()
#8  0x000055555795777d in 
base::MessageLoop::DeferOrRunPendingTask(base::PendingTask) ()
#9  0x0000555557957c20 in base::MessageLoop::DoWork() ()
#10 0x0000555557958879 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#11 0x000055555797525a in base::RunLoop::Run() ()
#12 0x0000555557990ffd in base::Thread::ThreadMain() ()
#13 0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#14 0x00007ffff7bc4464 in start_thread (arg=0x7fffc4bf8700) at 
pthread_create.c:333
#15 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
(gdb) thread apply all backtrace

Thread 32 (Thread 0x7fffc3bf6700 (LWP 22172)):
#0  0x00007fffedc36fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff3e4d778 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#2  0x00007ffff3e37add in event_base_loop () from 
/usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#3  0x0000555557958f0a in 
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffc3bf6700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 31 (Thread 0x7fffc4bf8700 (LWP 22170)):
#0  0x00005555595843eb in blink::WebData::assign(char const*, unsigned long) ()
#1  0x0000555559522486 in content::ImageDecoder::Decode(unsigned char const*, 
unsigned long) const ()
#2  0x00005555595224ed in content::DecodeImage(unsigned char const*, gfx::Size 
const&, unsigned long) ()
#3  0x000055555aeade3e in importer::ReencodeFavicon(unsigned char const*, 
unsigned long, std::vector<unsigned char, std::allocator<unsigned char> >*) ()
#4  0x000055555aead94f in 
bookmark_html_reader::ImportBookmarksFile(base::Callback<bool (), 
(base::internal::CopyMode)1> const&, base::Callback<bool (GURL const&), 
(base::internal::CopyMode)1> const&, base::FilePath const&, 
std::vector<ImportedBookmarkEntry, std::allocator<ImportedBookmarkEntry> >*, 
std::vector<importer::SearchEngineInfo, 
std::allocator<importer::SearchEngineInfo> >*, 
std::vector<favicon_base::FaviconUsageData, 
std::allocator<favicon_base::FaviconUsageData> >*) ()
#5  0x000055555aea1b51 in 
BookmarksFileImporter::StartImport(importer::SourceProfile const&, unsigned 
short, ImporterBridge*) ()
#6  0x00005555579b9550 in base::debug::TaskAnnotator::RunTask(char const*, 
base::PendingTask const&) ()
#7  0x0000555557955fca in base::MessageLoop::RunTask(base::PendingTask const&) 
()
#8  0x000055555795777d in 
base::MessageLoop::DeferOrRunPendingTask(base::PendingTask) ()
#9  0x0000555557957c20 in base::MessageLoop::DoWork() ()
#10 0x0000555557958879 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#11 0x000055555797525a in base::RunLoop::Run() ()
#12 0x0000555557990ffd in base::Thread::ThreadMain() ()
#13 0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#14 0x00007ffff7bc4464 in start_thread (arg=0x7fffc4bf8700) at 
pthread_create.c:333
#15 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 30 (Thread 0x7fffc43f7700 (LWP 22171)):
#0  0x00005555588200b1 in WTF::SpinLock::lockSlow() ()
#1  0x0000555558821768 in 
WTF::partitionAllocGenericInit(WTF::PartitionRootGeneric*) ()
#2  0x0000555558822f74 in WTF::Partitions::initialize(void (*)(unsigned long)) 
()
#3  0x0000555559581d34 in blink::Platform::initialize(blink::Platform*) ()
#4  0x0000555559710039 in blink::initialize(blink::Platform*) ()
#5  0x000055555acb7554 in 
content::RenderThreadImpl::InitializeWebKit(scoped_refptr<base::SingleThreadTaskRunner>&)
 ()
#6  0x000055555acb7fb9 in 
content::RenderThreadImpl::Init(scoped_refptr<base::SingleThreadTaskRunner>&) ()
#7  0x000055555acb99ac in 
content::RenderThreadImpl::RenderThreadImpl(content::InProcessChildThreadParams 
const&, std::unique_ptr<blink::scheduler::RendererScheduler, 
std::default_delete<blink::scheduler::RendererScheduler> >, 
scoped_refptr<base::SingleThreadTaskRunner>&) ()
#8  0x000055555acb9a2d in 
content::RenderThreadImpl::Create(content::InProcessChildThreadParams const&) ()
#9  0x0000555557991075 in base::Thread::ThreadMain() ()
#10 0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#11 0x00007ffff7bc4464 in start_thread (arg=0x7fffc43f7700) at 
pthread_create.c:333
#12 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 29 (Thread 0x7fffc560b700 (LWP 22169)):
#0  0x00007fffedc36fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff3e4d778 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#2  0x00007ffff3e37add in event_base_loop () from 
/usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#3  0x0000555557958f0a in 
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffc560b700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 28 (Thread 0x7fffc5e0c700 (LWP 22168)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827b5 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#3  0x0000555557958901 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffc5e0c700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 27 (Thread 0x7fffc7975700 (LWP 22167)):
#0  0x00007fffedc36fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff3e4d778 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#2  0x00007ffff3e37add in event_base_loop () from 
/usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#3  0x0000555557958f0a in 
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffc7975700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 26 (Thread 0x7fffc8176700 (LWP 22166)):
#0  __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007ffff7bc6c36 in __GI___pthread_mutex_lock (mutex=0x7ffff7ffd948 
<_rtld_global+2312>) at ../nptl/pthread_mutex_lock.c:115
#2  0x00007ffff7ded395 in _dl_open (file=0x7fffc8174f70 "libudev.so.1", 
mode=-2147483643, caller_dlopen=0x7fffc6ebd2b7, nsid=-2, argc=7, 
argv=0x7fffffffdfc8, env=0x375ef26c9c40) at dl-open.c:606
#3  0x00007ffff79b9ee9 in dlopen_doit (a=a@entry=0x7fffc8174f40) at dlopen.c:66
#4  0x00007ffff7de9484 in _dl_catch_error (objname=0x375ef2c31970, 
errstring=0x375ef2c31978, mallocedp=0x375ef2c31968, operate=0x7ffff79b9e90 
<dlopen_doit>, args=0x7fffc8174f40) at dl-error.c:187
#5  0x00007ffff79ba521 in _dlerror_run (operate=operate@entry=0x7ffff79b9e90 
<dlopen_doit>, args=args@entry=0x7fffc8174f40) at dlerror.c:163
#6  0x00007ffff79b9f82 in __dlopen (file=<optimized out>, mode=<optimized out>) 
at dlopen.c:87
#7  0x00007fffc6ebd2b7 in ?? () from /usr/lib/x86_64-linux-gnu/libGL.so.1
#8  0x00007fffc6ebdc2a in ?? () from /usr/lib/x86_64-linux-gnu/libGL.so.1
#9  0x00007fffc6ebe288 in ?? () from /usr/lib/x86_64-linux-gnu/libGL.so.1
#10 0x00007fffc6eb8aa4 in ?? () from /usr/lib/x86_64-linux-gnu/libGL.so.1
#11 0x00007fffc6e8f60c in ?? () from /usr/lib/x86_64-linux-gnu/libGL.so.1
#12 0x00007fffc6e8b88b in ?? () from /usr/lib/x86_64-linux-gnu/libGL.so.1
#13 0x00007fffc6e8bcc2 in glXQueryExtensionsString () from 
/usr/lib/x86_64-linux-gnu/libGL.so.1
#14 0x000055555b2daacb in 
gl::RealGLXApi::glXQueryExtensionsStringFn(_XDisplay*, int) ()
#15 0x000055555b2dd8d3 in gl::DriverGLX::GetPlatformExtensions[abi:cxx11]() ()
#16 0x000055555b2dfe31 in gl::DriverGLX::InitializeExtensionBindings() ()
#17 0x000055555b2e07d2 in gl::init::(anonymous 
namespace)::InitializeStaticGLXInternal() ()
#18 0x000055555b2e0250 in 
gl::init::InitializeGLOneOffImplementation(gl::GLImplementation, bool, bool, 
bool) ()
#19 0x000055555b2e0385 in gl::init::InitializeGLOneOff() ()
#20 0x0000555559577ff7 in 
content::GpuChildThread::GpuChildThread(gpu::GpuPreferences const&, 
content::InProcessChildThreadParams const&, gpu::GpuMemoryBufferFactory*) ()
#21 0x0000555559574da9 in content::InProcessGpuThread::Init() ()
#22 0x0000555557991075 in base::Thread::ThreadMain() ()
#23 0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#24 0x00007ffff7bc4464 in start_thread (arg=0x7fffc8176700) at 
pthread_create.c:333
#25 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 25 (Thread 0x7fffc8c1b700 (LWP 22165)):
#0  0x00007fffedc2d56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff6e3b9f6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff6e3bd82 in g_main_loop_run () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff3b5e4f6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007ffff6e63345 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff7bc4464 in start_thread (arg=0x7fffc8c1b700) at 
pthread_create.c:333
#6  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 24 (Thread 0x7fffc941c700 (LWP 22164)):
#0  0x00007fffedc2d56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff6e3b9f6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff6e3bb0c in g_main_context_iteration () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff6e3bb51 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ffff6e63345 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff7bc4464 in start_thread (arg=0x7fffc941c700) at 
pthread_create.c:333
#6  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 23 (Thread 0x7fffc9ebe700 (LWP 22161)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000055555798f5b9 in 
base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*)
 ()
#2  0x000055555798fc39 in base::SequencedWorkerPool::Worker::Run() ()
#3  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#4  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#5  0x00007ffff7bc4464 in start_thread (arg=0x7fffc9ebe700) at 
pthread_create.c:333
#6  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 22 (Thread 0x7fffca6bf700 (LWP 22160)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000055555798f5b9 in 
base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*)
 ()
#2  0x000055555798fc39 in base::SequencedWorkerPool::Worker::Run() ()
#3  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#4  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#5  0x00007ffff7bc4464 in start_thread (arg=0x7fffca6bf700) at 
pthread_create.c:333
#6  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 21 (Thread 0x7fffcaec0700 (LWP 22159)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827b5 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#3  0x0000555557958901 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffcaec0700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 20 (Thread 0x7fffd3ebf700 (LWP 22151)):
#0  0x00007fffedc2d56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fffefe02eb1 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007fffefdf4681 in pa_mainloop_poll () from 
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007fffefdf4d1e in pa_mainloop_iterate () from 
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007fffefdf4dd0 in pa_mainloop_run () from 
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007fffefe02df9 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007fffe3621238 in ?? () from 
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-9.0.so
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffd3ebf700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 19 (Thread 0x7fffd46c0700 (LWP 22150)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827b5 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#3  0x0000555557958901 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffd46c0700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 18 (Thread 0x7fffd4ec1700 (LWP 22149)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000055555854a47d in cc::SingleThreadTaskGraphRunner::Run() ()
#2  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#3  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#4  0x00007ffff7bc4464 in start_thread (arg=0x7fffd4ec1700) at 
pthread_create.c:333
#5  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 17 (Thread 0x7fffd56c2700 (LWP 22148)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000555557982725 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827d4 in base::WaitableEvent::Wait() ()
#3  0x00005555579588c3 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffd56c2700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 16 (Thread 0x7fffd5ec3700 (LWP 22147)):
#0  0x00007fffedc36fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff3e4d778 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#2  0x00007ffff3e37add in event_base_loop () from 
/usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#3  0x0000555557958fc2 in 
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555556228b38 in 
content::BrowserThreadImpl::IOThreadRun(base::RunLoop*) ()
#6  0x000055555622902b in content::BrowserThreadImpl::Run(base::RunLoop*) ()
#7  0x0000555557991098 in base::Thread::ThreadMain() ()
#8  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#9  0x00007ffff7bc4464 in start_thread (arg=0x7fffd5ec3700) at 
pthread_create.c:333
#10 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 15 (Thread 0x7fffd66c4700 (LWP 22146)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827b5 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#3  0x0000555557958901 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555556228a88 in 
content::BrowserThreadImpl::CacheThreadRun(base::RunLoop*) ()
#6  0x000055555622908b in content::BrowserThreadImpl::Run(base::RunLoop*) ()
#7  0x0000555557991098 in base::Thread::ThreadMain() ()
#8  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#9  0x00007ffff7bc4464 in start_thread (arg=0x7fffd66c4700) at 
pthread_create.c:333
#10 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 14 (Thread 0x7fffd6ec5700 (LWP 22145)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000555557982725 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827d4 in base::WaitableEvent::Wait() ()
#3  0x00005555579588c3 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x00005555562289d8 in 
content::BrowserThreadImpl::ProcessLauncherThreadRun(base::RunLoop*) ()
#6  0x000055555622907b in content::BrowserThreadImpl::Run(base::RunLoop*) ()
#7  0x0000555557991098 in base::Thread::ThreadMain() ()
#8  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#9  0x00007ffff7bc4464 in start_thread (arg=0x7fffd6ec5700) at 
pthread_create.c:333
#10 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 13 (Thread 0x7fffd76c6700 (LWP 22144)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000555557982725 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827d4 in base::WaitableEvent::Wait() ()
#3  0x00005555579588c3 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555556228928 in 
content::BrowserThreadImpl::FileUserBlockingThreadRun(base::RunLoop*) ()
#6  0x000055555622906b in content::BrowserThreadImpl::Run(base::RunLoop*) ()
#7  0x0000555557991098 in base::Thread::ThreadMain() ()
#8  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#9  0x00007ffff7bc4464 in start_thread (arg=0x7fffd76c6700) at 
pthread_create.c:333
#10 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 12 (Thread 0x7fffd7ec7700 (LWP 22143)):
#0  0x00007fffedc36fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff3e4d778 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#2  0x00007ffff3e37add in event_base_loop () from 
/usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#3  0x0000555557958fc2 in 
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555556228878 in 
content::BrowserThreadImpl::FileThreadRun(base::RunLoop*) ()
#6  0x000055555622905b in content::BrowserThreadImpl::Run(base::RunLoop*) ()
#7  0x0000555557991098 in base::Thread::ThreadMain() ()
#8  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#9  0x00007ffff7bc4464 in start_thread (arg=0x7fffd7ec7700) at 
pthread_create.c:333
#10 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 11 (Thread 0x7fffd86c8700 (LWP 22142)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827b5 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#3  0x0000555557958901 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x00005555562287c8 in 
content::BrowserThreadImpl::DBThreadRun(base::RunLoop*) ()
#6  0x000055555622904b in content::BrowserThreadImpl::Run(base::RunLoop*) ()
#7  0x0000555557991098 in base::Thread::ThreadMain() ()
#8  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#9  0x00007ffff7bc4464 in start_thread (arg=0x7fffd86c8700) at 
pthread_create.c:333
#10 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 10 (Thread 0x7fffd8ec9700 (LWP 22141)):
#0  0x00007ffff7bcd24d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x000055555796fb64 in 
base::GetAppOutputInternal(std::vector<std::__cxx11::basic_string<char, 
std::char_traits<char>, std::allocator<char> >, 
std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, 
std::allocator<char> > > > const&, char* const*, bool, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> 
>*, bool, int*) [clone .constprop.43] ()
#2  0x000055555796fc53 in 
base::GetAppOutput(std::vector<std::__cxx11::basic_string<char, 
std::char_traits<char>, std::allocator<char> >, 
std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, 
std::allocator<char> > > > const&, std::__cxx11::basic_string<char, 
std::char_traits<char>, std::allocator<char> >*) ()
#3  0x000055555794c399 in base::GetLinuxDistro[abi:cxx11]() ()
#4  0x00005555576aa021 in 
base::internal::Invoker<base::internal::BindState<base::internal::IgnoreResultHelper<std::__cxx11::basic_string<char,
 std::char_traits<char>, std::allocator<char> > (*)()>>, void 
()>::Run(base::internal::BindStateBase*) ()
#5  0x000055555798f84b in 
base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*)
 ()
#6  0x000055555798fc39 in base::SequencedWorkerPool::Worker::Run() ()
#7  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#8  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#9  0x00007ffff7bc4464 in start_thread (arg=0x7fffd8ec9700) at 
pthread_create.c:333
#10 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 9 (Thread 0x7fffda198700 (LWP 22140)):
#0  0x00007ffff7bcd24d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000555557779e47 in (anonymous namespace)::ShutdownDetector::ThreadMain() 
()
#2  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#3  0x00007ffff7bc4464 in start_thread (arg=0x7fffda198700) at 
pthread_create.c:333
#4  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7fffda999700 (LWP 22139)):
#0  __GI__dl_debug_state () at dl-debug.c:74
#1  0x00007ffff7ddf792 in _dl_map_object_from_fd 
(name=name@entry=0x7fffda997fa0 "libnss_mdns4_minimal.so.2", 
origname=origname@entry=0x0, fd=100, fbp=0x7fffda997780, 
realname=0x375ef276dae0 "/lib/x86_64-linux-gnu/libnss_mdns4_minimal.so.2", 
loader=loader@entry=0x0, l_type=2, mode=-1879048191, stack_endp=0x7fffda997778, 
nsid=0) at dl-load.c:998
#2  0x00007ffff7de25ac in _dl_map_object (loader=0x0, 
loader@entry=0x7ffff7fb59d0, name=name@entry=0x7fffda997fa0 
"libnss_mdns4_minimal.so.2", type=type@entry=2, trace_mode=trace_mode@entry=0, 
mode=mode@entry=-1879048191, nsid=<optimized out>) at dl-load.c:2476
#3  0x00007ffff7ded924 in dl_open_worker (a=a@entry=0x7fffda997d30) at 
dl-open.c:237
#4  0x00007ffff7de9484 in _dl_catch_error 
(objname=objname@entry=0x7fffda997d20, 
errstring=errstring@entry=0x7fffda997d28, 
mallocedp=mallocedp@entry=0x7fffda997d1f, operate=operate@entry=0x7ffff7ded880 
<dl_open_worker>, args=args@entry=0x7fffda997d30) at dl-error.c:187
#5  0x00007ffff7ded419 in _dl_open (file=0x7fffda997fa0 
"libnss_mdns4_minimal.so.2", mode=-2147483647, caller_dlopen=0x7fffedc55ffe 
<nss_load_library+238>, nsid=-2, argc=<optimized out>, argv=<optimized out>, 
env=0x375ef26c9c40) at dl-open.c:660
#6  0x00007fffedc6cfed in do_dlopen (ptr=ptr@entry=0x7fffda997f70) at 
dl-libc.c:87
#7  0x00007ffff7de9484 in _dl_catch_error (objname=0x7fffda997f50, 
errstring=0x7fffda997f58, mallocedp=0x7fffda997f4f, operate=0x7fffedc6cfb0 
<do_dlopen>, args=0x7fffda997f70) at dl-error.c:187
#8  0x00007fffedc6d07f in dlerror_run (operate=operate@entry=0x7fffedc6cfb0 
<do_dlopen>, args=args@entry=0x7fffda997f70) at dl-libc.c:46
#9  0x00007fffedc6d0f2 in __GI___libc_dlopen_mode 
(name=name@entry=0x7fffda997fa0 "libnss_mdns4_minimal.so.2", 
mode=mode@entry=-2147483647) at dl-libc.c:163
#10 0x00007fffedc55ffe in nss_load_library (ni=ni@entry=0x375ef2c64680) at 
nsswitch.c:358
#11 0x00007fffedc56848 in __GI___nss_lookup_function (ni=0x375ef2c64680, 
fct_name=<optimized out>, fct_name@entry=0x7fffedcb115f "gethostbyname2_r") at 
nsswitch.c:466
#12 0x00007fffedc56a35 in __GI___nss_next2 (ni=ni@entry=0x7fffda9980e8, 
fct_name=fct_name@entry=0x7fffedcb115f "gethostbyname2_r", 
fct2_name=fct2_name@entry=0x0, fctp=fctp@entry=0x7fffda9980e0, 
status=<optimized out>, all_values=all_values@entry=0) at nsswitch.c:242
#13 0x00007fffedc482de in __gethostbyname2_r (name=name@entry=0x375ef2c24558 
"www.google.com", af=af@entry=2, resbuf=resbuf@entry=0x7fffda998270, 
buffer=<optimized out>, buflen=1024, result=result@entry=0x7fffda998268, 
h_errnop=0x7fffda99824c) at ../nss/getXXbyYY_r.c:385
#14 0x00007fffedc21f79 in gaih_inet (name=name@entry=0x375ef2c24558 
"www.google.com", service=<optimized out>, req=req@entry=0x7fffda998830, 
pai=pai@entry=0x7fffda998358, naddrs=naddrs@entry=0x7fffda998354, 
tmpbuf=tmpbuf@entry=0x7fffda9983c0) at ../sysdeps/posix/getaddrinfo.c:629
#15 0x00007fffedc231f8 in __GI_getaddrinfo (name=<optimized out>, 
service=<optimized out>, hints=0x7fffda998830, pai=0x7fffda998828) at 
../sysdeps/posix/getaddrinfo.c:2391
#16 0x0000555557bf84da in 
net::SystemHostResolverCall(std::__cxx11::basic_string<char, 
std::char_traits<char>, std::allocator<char> > const&, net::AddressFamily, int, 
net::AddressList*, int*) ()
#17 0x0000555557bed18e in 
net::HostResolverImpl::ProcTask::DoLookup(base::TimeTicks const&, unsigned int) 
()
#18 0x000055555799497f in base::(anonymous 
namespace)::WorkerThread::ThreadMain() ()
#19 0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#20 0x00007ffff7bc4464 in start_thread (arg=0x7fffda999700) at 
pthread_create.c:333
#21 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7fffdb19a700 (LWP 22138)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x0000555557994489 in base::PosixDynamicThreadPool::WaitForTask() ()
#3  0x00005555579949da in base::(anonymous 
namespace)::WorkerThread::ThreadMain() ()
#4  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#5  0x00007ffff7bc4464 in start_thread (arg=0x7fffdb19a700) at 
pthread_create.c:333
#6  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7fffdb99b700 (LWP 22137)):
#0  0x00007fffedc2f2b3 in select () at ../sysdeps/unix/syscall-template.S:84
#1  0x00005555579416df in base::(anonymous 
namespace)::InotifyReaderCallback(base::(anonymous namespace)::InotifyReader*, 
int) ()
#2  0x00005555579b9550 in base::debug::TaskAnnotator::RunTask(char const*, 
base::PendingTask const&) ()
#3  0x0000555557955fca in base::MessageLoop::RunTask(base::PendingTask const&) 
()
#4  0x000055555795777d in 
base::MessageLoop::DeferOrRunPendingTask(base::PendingTask) ()
#5  0x0000555557957c20 in base::MessageLoop::DoWork() ()
#6  0x0000555557958879 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#7  0x000055555797525a in base::RunLoop::Run() ()
#8  0x0000555557990ffd in base::Thread::ThreadMain() ()
#9  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#10 0x00007ffff7bc4464 in start_thread (arg=0x7fffdb99b700) at 
pthread_create.c:333
#11 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7fffdc19c700 (LWP 22136)):
#0  0x00007fffedc36fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff3e4d778 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#2  0x00007ffff3e37add in event_base_loop () from 
/usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#3  0x0000555557958fc2 in 
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffdc19c700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7fffdc99d700 (LWP 22135)):
#0  0x00007fffedc36fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff3e4d778 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#2  0x00007ffff3e37add in event_base_loop () from 
/usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#3  0x0000555557958f0a in 
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffdc99d700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7fffdd5ac700 (LWP 22134)):
#0  0x00007ffff7bcdb7b in __waitpid (pid=22130, stat_loc=0x0, options=0) at 
../sysdeps/unix/sysv/linux/waitpid.c:29
#1  0x000055555796e686 in base::(anonymous 
namespace)::BackgroundReaper::ThreadMain() ()
#2  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#3  0x00007ffff7bc4464 in start_thread (arg=0x7fffdd5ac700) at 
pthread_create.c:333
#4  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7fffdddad700 (LWP 22129)):
#0  0x00007fffedc2d56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000555556483532 in content::SandboxIPCHandler::Run() ()
#2  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#3  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#4  0x00007ffff7bc4464 in start_thread (arg=0x7fffdddad700) at 
pthread_create.c:333
#5  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7ffff7efdb40 (LWP 22124)):
#0  0x0000555557e34ec4 in 
PrefChangeRegistrar::Add(std::__cxx11::basic_string<char, 
std::char_traits<char>, std::allocator<char> > const&, base::Callback<void 
(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> 
> const&), (base::internal::CopyMode)1> const&) ()
#1  0x000055555765081e in FontFamilyCache::FetchFont[abi:cxx11](char const*, 
char const*) ()
#2  0x000055555765009b in FontFamilyCache::FetchAndCacheFont[abi:cxx11](char 
const*, char const*) ()
#3  0x0000555557650178 in FontFamilyCache::FillFontFamilyMap(char const*, 
std::map<std::__cxx11::basic_string<char, std::char_traits<char>, 
std::allocator<char> >, std::__cxx11::basic_string<unsigned short, 
base::string16_char_traits, std::allocator<unsigned short> >, 
std::less<std::__cxx11::basic_string<char, std::char_traits<char>, 
std::allocator<char> > >, 
std::allocator<std::pair<std::__cxx11::basic_string<char, 
std::char_traits<char>, std::allocator<char> > const, 
std::__cxx11::basic_string<unsigned short, base::string16_char_traits, 
std::allocator<unsigned short> > > > >*) ()
#4  0x000055555757b7e4 in 
ChromeContentBrowserClient::OverrideWebkitPrefs(content::RenderViewHost*, 
content::WebPreferences*) ()
#5  0x0000555556464920 in content::RenderViewHostImpl::ComputeWebkitPrefs() ()
#6  0x0000555556464a6a in 
content::RenderViewHostImpl::OnWebkitPreferencesChanged() [clone .part.190] ()
#7  0x00005555564627d9 in content::RenderViewHostImpl::GetWebkitPreferences() ()
#8  0x000055555647cadf in 
content::RenderWidgetHostViewAura::RenderWidgetHostViewAura(content::RenderWidgetHost*,
 bool) ()
#9  0x000055555654b7cf in 
content::WebContentsViewAura::CreateViewForWidget(content::RenderWidgetHost*, 
bool) [clone .part.109] ()
#10 0x000055555653934d in 
content::WebContentsImpl::CreateRenderWidgetHostViewForRenderManager(content::RenderViewHost*)
 ()
#11 0x0000555556547ba8 in 
content::WebContentsImpl::CreateRenderViewForRenderManager(content::RenderViewHost*,
 int, int, content::FrameReplicationState const&) ()
#12 0x00005555563099a3 in content::RenderFrameHostManager::Navigate(GURL 
const&, content::FrameNavigationEntry const&, content::NavigationEntryImpl 
const&, bool) ()
#13 0x00005555562ee236 in 
content::NavigatorImpl::NavigateToEntry(content::FrameTreeNode*, 
content::FrameNavigationEntry const&, content::NavigationEntryImpl const&, 
content::NavigationController::ReloadType, bool, bool, bool, 
scoped_refptr<content::ResourceRequestBodyImpl> const&) ()
#14 0x00005555562ee8f3 in 
content::NavigatorImpl::NavigateToPendingEntry(content::FrameTreeNode*, 
content::FrameNavigationEntry const&, 
content::NavigationController::ReloadType, bool) ()
#15 0x00005555562df7cb in 
content::NavigationControllerImpl::NavigateToPendingEntryInternal(content::NavigationController::ReloadType)
 ()
#16 0x00005555562df925 in 
content::NavigationControllerImpl::NavigateToPendingEntry(content::NavigationController::ReloadType)
 ()
#17 0x00005555562dfaf7 in 
content::NavigationControllerImpl::LoadEntry(std::unique_ptr<content::NavigationEntryImpl,
 std::default_delete<content::NavigationEntryImpl> >) ()
#18 0x00005555562dfdd9 in 
content::NavigationControllerImpl::LoadURLWithParams(content::NavigationController::LoadURLParams
 const&) ()
#19 0x00005555562db144 in content::NavigationControllerImpl::LoadURL(GURL 
const&, content::Referrer const&, ui::PageTransition, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > 
const&) ()
#20 0x000055555736c872 in extensions::ExtensionHost::LoadInitialURL() ()
#21 0x000055555736cc24 in extensions::ExtensionHost::CreateRenderViewNow() ()
#22 0x0000555557382599 in 
extensions::ExtensionRegistry::TriggerOnReady(extensions::Extension const*) ()
#23 0x0000555558b0e086 in 
base::internal::Invoker<base::internal::BindState<void 
(ExtensionService::*)(scoped_refptr<extensions::Extension const>), 
base::WeakPtr<ExtensionService>, scoped_refptr<extensions::Extension const> >, 
void ()>::Run(base::internal::BindStateBase*) ()
#24 0x000055555798d21e in base::(anonymous 
namespace)::PostTaskAndReplyRelay::RunReplyAndSelfDestruct() ()
#25 0x00005555579b9550 in base::debug::TaskAnnotator::RunTask(char const*, 
base::PendingTask const&) ()
#26 0x0000555557955fca in base::MessageLoop::RunTask(base::PendingTask const&) 
()
#27 0x000055555795777d in 
base::MessageLoop::DeferOrRunPendingTask(base::PendingTask) ()
#28 0x0000555557957c20 in base::MessageLoop::DoWork() ()
#29 0x0000555557958d39 in base::MessagePumpGlib::HandleDispatch() ()
#30 0x0000555557958d7d in base::(anonymous 
namespace)::WorkSourceDispatch(_GSource*, int (*)(void*), void*) ()
#31 0x00007ffff6e3b7f7 in g_main_context_dispatch () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007ffff6e3ba60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007ffff6e3bb0c in g_main_context_iteration () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x0000555557958b0a in 
base::MessagePumpGlib::Run(base::MessagePump::Delegate*) ()
#35 0x000055555797525a in base::RunLoop::Run() ()
#36 0x000055555777b2ac in (anonymous 
namespace)::ImportFromSourceProfile(importer::SourceProfile const&, Profile*, 
unsigned short) ()
#37 0x000055555777c987 in first_run::AutoImport(Profile*, bool, int, int, 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > 
const&) ()
#38 0x00005555577bbd94 in ChromeBrowserMainParts::PreMainMessageLoopRunImpl() ()
#39 0x00005555577bc00e in ChromeBrowserMainParts::PreMainMessageLoopRun() ()
#40 0x00005555562175ab in content::BrowserMainLoop::PreMainMessageLoopRun() ()
#41 0x000055555650f6f7 in content::StartupTaskRunner::RunAllTasksNow() ()
#42 0x0000555556218e62 in content::BrowserMainLoop::CreateStartupTasks() ()
#43 0x000055555621e5e1 in 
content::BrowserMainRunnerImpl::Initialize(content::MainFunctionParams const&) 
()
#44 0x00005555562165e4 in content::BrowserMain(content::MainFunctionParams 
const&) ()
#45 0x000055555755210f in content::ContentMainRunnerImpl::Run() ()
#46 0x0000555557550321 in content::ContentMain(content::ContentMainParams 
const&) ()
#47 0x000055555604affa in ChromeMain ()
#48 0x00007fffedb6e2b1 in __libc_start_main (main=0x555556048720 <main>, 
argc=7, argv=0x7fffffffdfc8, init=<optimized out>, fini=<optimized out>, 
rtld_fini=<optimized out>, stack_end=0x7fffffffdfb8) at ../csu/libc-start.c:291
#49 0x000055555604aeaa in _start ()
(gdb) quit
A debugging session is active.

        Inferior 1 [process 22124] will be killed.

Quit anyway? (y or n) y
# Env:
#     LD_LIBRARY_PATH=
#                PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
#            GTK_PATH=
#      CHROMIUM_FLAGS= --show-component-extension-options 
--ignore-gpu-blacklist --disable-background-networking 
--ppapi-flash-path=/usr/lib/pepperflashplugin-nonfree/libpepflashplayer.so 
--ppapi-flash-version=22.0.0.209
/usr/bin/gdb /usr/lib/chromium/chromium -x /tmp/chromiumargs.3TOXnD
GNU gdb (Debian 7.11.1-2+b1) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/lib/chromium/chromium...Reading symbols from 
/usr/lib/debug/.build-id/e2/177860d089e24ca7ad12f0d0e8fb7073744cf5.debug...(no 
debugging symbols found)...done.
(no debugging symbols found)...done.
(gdb) handle SIG33 pass nostop noprint
Signal        Stop      Print   Pass to program Description
SIG33         No        No      Yes             Real-time event 33
(gdb) set pagination 0
(gdb) run
Starting program: /usr/lib/chromium/chromium --show-component-extension-options 
--ignore-gpu-blacklist --disable-background-networking 
--ppapi-flash-path=/usr/lib/pepperflashplugin-nonfree/libpepflashplayer.so 
--ppapi-flash-version=22.0.0.209 --single-process 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffdddad700 (LWP 22319)]
[New Thread 0x7fffdd5ac700 (LWP 22324)]
[New Thread 0x7fffdc99d700 (LWP 22325)]
[New Thread 0x7fffdc19c700 (LWP 22326)]
[New Thread 0x7fffdb99b700 (LWP 22327)]
[New Thread 0x7fffdb19a700 (LWP 22328)]
[New Thread 0x7fffda999700 (LWP 22329)]
[New Thread 0x7fffda991700 (LWP 22330)]
[New Thread 0x7fffd8ec9700 (LWP 22331)]
[New Thread 0x7fffd86c8700 (LWP 22332)]
[New Thread 0x7fffd7ec7700 (LWP 22333)]
[New Thread 0x7fffd76c6700 (LWP 22334)]
[New Thread 0x7fffd6ec5700 (LWP 22335)]
[New Thread 0x7fffd66c4700 (LWP 22336)]
[New Thread 0x7fffd5ec3700 (LWP 22338)]
[New Thread 0x7fffd56c2700 (LWP 22339)]
[New Thread 0x7fffd4ec1700 (LWP 22340)]
[New Thread 0x7fffd46c0700 (LWP 22341)]
[New Thread 0x7fffd3ebf700 (LWP 22342)]
[New Thread 0x7fffcaec0700 (LWP 22351)]
[New Thread 0x7fffca6bf700 (LWP 22352)]
[New Thread 0x7fffc9ebe700 (LWP 22353)]
[New Thread 0x7fffc93fc700 (LWP 22356)]
[New Thread 0x7fffc8bfb700 (LWP 22357)]
[New Thread 0x7fffc83fa700 (LWP 22358)]
[Thread 0x7fffc83fa700 (LWP 22358) exited]
[New Thread 0x7fffc7651700 (LWP 22359)]
[New Thread 0x7fffc6da3700 (LWP 22360)]
[New Thread 0x7fffc6540700 (LWP 22361)]
[New Thread 0x7fffc5d3f700 (LWP 22362)]
[New Thread 0x7fffc4cbd700 (LWP 22363)]
[New Thread 0x7fffc3a65700 (LWP 22364)]
[New Thread 0x7fffc2a63700 (LWP 22366)]
[New Thread 0x7fffc3264700 (LWP 22365)]
[New Thread 0x7fffc2262700 (LWP 22367)]
[New Thread 0x7fffc1a61700 (LWP 22368)]
[New Thread 0x7fffc1260700 (LWP 22369)]
[22315:22338:1126/122345:ERROR:proxy_service_factory.cc(127)] Cannot use V8 
Proxy resolver in single process mode.
[New Thread 0x7fffc0a5f700 (LWP 22370)]
[22315:22338:1126/122345:ERROR:proxy_service_factory.cc(127)] Cannot use V8 
Proxy resolver in single process mode.
[New Thread 0x7fffc025e700 (LWP 22371)]
[New Thread 0x7fffbad2a700 (LWP 22373)]
[New Thread 0x7fffb84d1700 (LWP 22374)]
[New Thread 0x7fffb7cd0700 (LWP 22375)]
[New Thread 0x7fffb70cf700 (LWP 22376)]
[Thread 0x7fffb70cf700 (LWP 22376) exited]
[New Thread 0x7fffb70cf700 (LWP 22377)]
[New Thread 0x7fffb48ec700 (LWP 22378)]
[22315:22315:1126/122346:ERROR:CONSOLE(291)] "Not allowed to load local 
resource: 
chrome-search://most-visited/single.html?removeTooltip=Don%27t%20show%20on%20this%20page",
 source: 
https://www.google.com/xjs/_/js/k=xjs.ntp.en_US.hjd2kdy6Nko.O/m=jsa,ntp,d,csi/am=AQ/rt=j/d=1/t=zcms/rs=ACT90oFrsqIbS8Kk5t_0WCTDJUqgl40z7A
 (291)
[Thread 0x7fffc025e700 (LWP 22371) exited]
[New Thread 0x7fffc025e700 (LWP 22379)]
[22315:22315:1126/122346:ERROR:navigation_entry_screenshot_manager.cc(141)] 
Invalid entry with unique id: 1
[New Thread 0x7fffb2b3b700 (LWP 22384)]
[Thread 0x7fffc2a63700 (LWP 22366) exited]
[New Thread 0x7fffc2a63700 (LWP 22395)]
[New Thread 0x7fffc83fa700 (LWP 22396)]
[Thread 0x7fffb2b3b700 (LWP 22384) exited]
[New Thread 0x7fffb2b3b700 (LWP 22397)]

Thread 29 "Chrome_InProcRe" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffc6540700 (LWP 22361)]
0x000055555a2364e5 in blink::LayoutObject::isDescendantOf(blink::LayoutObject 
const*) const ()
(gdb) backtrace
#0  0x000055555a2364e5 in 
blink::LayoutObject::isDescendantOf(blink::LayoutObject const*) const ()
#1  0x000055555a2aec6c in 
blink::CompositedLayerMapping::containingSquashedLayer(blink::LayoutObject 
const*, WTF::Vector<blink::GraphicsLayerPaintInfo, 0ul, 
WTF::PartitionAllocator> const&, unsigned int) ()
#2  0x000055555a434935 in 
blink::CompositingLayerAssigner::getReasonsPreventingSquashing(blink::PaintLayer
 const*, blink::CompositingLayerAssigner::SquashingState const&) [clone 
.part.27] ()
#3  0x000055555a43588e in 
blink::CompositingLayerAssigner::assignLayersToBackingsInternal(blink::PaintLayer*,
 blink::CompositingLayerAssigner::SquashingState&, 
WTF::Vector<blink::PaintLayer*, 0ul, WTF::PartitionAllocator>&) ()
#4  0x000055555a435591 in 
blink::CompositingLayerAssigner::assignLayersToBackingsInternal(blink::PaintLayer*,
 blink::CompositingLayerAssigner::SquashingState&, 
WTF::Vector<blink::PaintLayer*, 0ul, WTF::PartitionAllocator>&) ()
#5  0x000055555a435591 in 
blink::CompositingLayerAssigner::assignLayersToBackingsInternal(blink::PaintLayer*,
 blink::CompositingLayerAssigner::SquashingState&, 
WTF::Vector<blink::PaintLayer*, 0ul, WTF::PartitionAllocator>&) ()
#6  0x000055555a435971 in 
blink::CompositingLayerAssigner::assign(blink::PaintLayer*, 
WTF::Vector<blink::PaintLayer*, 0ul, WTF::PartitionAllocator>&) ()
#7  0x000055555a2b61b9 in blink::PaintLayerCompositor::updateIfNeeded() ()
#8  0x000055555a2b767e in 
blink::PaintLayerCompositor::updateIfNeededRecursiveInternal() ()
#9  0x000055555a2b78bc in 
blink::PaintLayerCompositor::updateIfNeededRecursive() ()
#10 0x0000555559f800e9 in 
blink::FrameView::updateLifecyclePhasesInternal(blink::DocumentLifecycle::LifecycleState)
 ()
#11 0x000055555a0d6bdd in 
blink::PageAnimator::updateAllLifecyclePhases(blink::LocalFrame&) ()
#12 0x00005555596ad65c in blink::WebViewImpl::updateAllLifecyclePhases() ()
#13 0x00005555585a2dda in 
cc::ProxyMain::BeginMainFrame(std::unique_ptr<cc::BeginMainFrameAndCommitState, 
std::default_delete<cc::BeginMainFrameAndCommitState> >) ()
#14 0x00005555585ac643 in 
base::internal::Invoker<base::internal::BindState<void 
(cc::ProxyMain::*)(std::unique_ptr<cc::BeginMainFrameAndCommitState, 
std::default_delete<cc::BeginMainFrameAndCommitState> >), 
base::WeakPtr<cc::ProxyMain>, 
base::internal::PassedWrapper<std::unique_ptr<cc::BeginMainFrameAndCommitState, 
std::default_delete<cc::BeginMainFrameAndCommitState> > > >, void 
()>::Run(base::internal::BindStateBase*) ()
#15 0x00005555579b9550 in base::debug::TaskAnnotator::RunTask(char const*, 
base::PendingTask const&) ()
#16 0x00005555596690af in 
blink::scheduler::TaskQueueManager::ProcessTaskFromWorkQueue(blink::scheduler::internal::WorkQueue*,
 blink::scheduler::internal::TaskQueueImpl::Task*) ()
#17 0x00005555596696f5 in 
blink::scheduler::TaskQueueManager::DoWork(base::TimeTicks, bool) ()
#18 0x00005555579b9550 in base::debug::TaskAnnotator::RunTask(char const*, 
base::PendingTask const&) ()
#19 0x0000555557955fca in base::MessageLoop::RunTask(base::PendingTask const&) 
()
#20 0x000055555795777d in 
base::MessageLoop::DeferOrRunPendingTask(base::PendingTask) ()
#21 0x0000555557957c20 in base::MessageLoop::DoWork() ()
#22 0x0000555557958879 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#23 0x000055555797525a in base::RunLoop::Run() ()
#24 0x0000555557990ffd in base::Thread::ThreadMain() ()
#25 0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#26 0x00007ffff7bc4464 in start_thread (arg=0x7fffc6540700) at 
pthread_create.c:333
#27 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
(gdb) thread apply all backtrace

Thread 50 (Thread 0x7fffb2b3b700 (LWP 22397)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x0000555557994489 in base::PosixDynamicThreadPool::WaitForTask() ()
#3  0x00005555579949da in base::(anonymous 
namespace)::WorkerThread::ThreadMain() ()
#4  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#5  0x00007ffff7bc4464 in start_thread (arg=0x7fffb2b3b700) at 
pthread_create.c:333
#6  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 49 (Thread 0x7fffc83fa700 (LWP 22396)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x0000555557994489 in base::PosixDynamicThreadPool::WaitForTask() ()
#3  0x00005555579949da in base::(anonymous 
namespace)::WorkerThread::ThreadMain() ()
#4  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#5  0x00007ffff7bc4464 in start_thread (arg=0x7fffc83fa700) at 
pthread_create.c:333
#6  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 48 (Thread 0x7fffc2a63700 (LWP 22395)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x0000555557994489 in base::PosixDynamicThreadPool::WaitForTask() ()
#3  0x00005555579949da in base::(anonymous 
namespace)::WorkerThread::ThreadMain() ()
#4  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#5  0x00007ffff7bc4464 in start_thread (arg=0x7fffc2a63700) at 
pthread_create.c:333
#6  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 46 (Thread 0x7fffc025e700 (LWP 22379)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000055555798f5b9 in 
base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*)
 ()
#2  0x000055555798fc39 in base::SequencedWorkerPool::Worker::Run() ()
#3  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#4  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#5  0x00007ffff7bc4464 in start_thread (arg=0x7fffc025e700) at 
pthread_create.c:333
#6  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 45 (Thread 0x7fffb48ec700 (LWP 22378)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000555557982725 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827d4 in base::WaitableEvent::Wait() ()
#3  0x00005555579588c3 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffb48ec700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 44 (Thread 0x7fffb70cf700 (LWP 22377)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000555557982725 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827d4 in base::WaitableEvent::Wait() ()
#3  0x00005555579588c3 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffb70cf700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 42 (Thread 0x7fffb7cd0700 (LWP 22375)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000055555798f5b9 in 
base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*)
 ()
#2  0x000055555798fc39 in base::SequencedWorkerPool::Worker::Run() ()
#3  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#4  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#5  0x00007ffff7bc4464 in start_thread (arg=0x7fffb7cd0700) at 
pthread_create.c:333
#6  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 41 (Thread 0x7fffb84d1700 (LWP 22374)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000055555798f5b9 in 
base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*)
 ()
#2  0x000055555798fc39 in base::SequencedWorkerPool::Worker::Run() ()
#3  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#4  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#5  0x00007ffff7bc4464 in start_thread (arg=0x7fffb84d1700) at 
pthread_create.c:333
#6  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 40 (Thread 0x7fffbad2a700 (LWP 22373)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffbecf3143 in ?? () from 
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007fffbecf2d07 in ?? () from 
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007ffff7bc4464 in start_thread (arg=0x7fffbad2a700) at 
pthread_create.c:333
#4  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 38 (Thread 0x7fffc0a5f700 (LWP 22370)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000055555ad80ea8 in 
content::CategorizedWorkerPool::Run(std::vector<cc::TaskCategory, 
std::allocator<cc::TaskCategory> > const&, base::ConditionVariable*) ()
#2  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#3  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#4  0x00007ffff7bc4464 in start_thread (arg=0x7fffc0a5f700) at 
pthread_create.c:333
#5  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 37 (Thread 0x7fffc1260700 (LWP 22369)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000055555ad80ea8 in 
content::CategorizedWorkerPool::Run(std::vector<cc::TaskCategory, 
std::allocator<cc::TaskCategory> > const&, base::ConditionVariable*) ()
#2  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#3  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#4  0x00007ffff7bc4464 in start_thread (arg=0x7fffc1260700) at 
pthread_create.c:333
#5  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 36 (Thread 0x7fffc1a61700 (LWP 22368)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000055555ad80ea8 in 
content::CategorizedWorkerPool::Run(std::vector<cc::TaskCategory, 
std::allocator<cc::TaskCategory> > const&, base::ConditionVariable*) ()
#2  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#3  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#4  0x00007ffff7bc4464 in start_thread (arg=0x7fffc1a61700) at 
pthread_create.c:333
#5  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 35 (Thread 0x7fffc2262700 (LWP 22367)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000055555ad80ea8 in 
content::CategorizedWorkerPool::Run(std::vector<cc::TaskCategory, 
std::allocator<cc::TaskCategory> > const&, base::ConditionVariable*) ()
#2  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#3  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#4  0x00007ffff7bc4464 in start_thread (arg=0x7fffc2262700) at 
pthread_create.c:333
#5  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 34 (Thread 0x7fffc3264700 (LWP 22365)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000055555ad80ea8 in 
content::CategorizedWorkerPool::Run(std::vector<cc::TaskCategory, 
std::allocator<cc::TaskCategory> > const&, base::ConditionVariable*) ()
#2  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#3  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#4  0x00007ffff7bc4464 in start_thread (arg=0x7fffc3264700) at 
pthread_create.c:333
#5  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 32 (Thread 0x7fffc3a65700 (LWP 22364)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000555557982725 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827d4 in base::WaitableEvent::Wait() ()
#3  0x00005555579588c3 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffc3a65700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 31 (Thread 0x7fffc4cbd700 (LWP 22363)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827b5 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#3  0x0000555557958901 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffc4cbd700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 30 (Thread 0x7fffc5d3f700 (LWP 22362)):
#0  0x00007fffedc36fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff3e4d778 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#2  0x00007ffff3e37add in event_base_loop () from 
/usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#3  0x0000555557958f0a in 
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffc5d3f700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 29 (Thread 0x7fffc6540700 (LWP 22361)):
#0  0x000055555a2364e5 in 
blink::LayoutObject::isDescendantOf(blink::LayoutObject const*) const ()
#1  0x000055555a2aec6c in 
blink::CompositedLayerMapping::containingSquashedLayer(blink::LayoutObject 
const*, WTF::Vector<blink::GraphicsLayerPaintInfo, 0ul, 
WTF::PartitionAllocator> const&, unsigned int) ()
#2  0x000055555a434935 in 
blink::CompositingLayerAssigner::getReasonsPreventingSquashing(blink::PaintLayer
 const*, blink::CompositingLayerAssigner::SquashingState const&) [clone 
.part.27] ()
#3  0x000055555a43588e in 
blink::CompositingLayerAssigner::assignLayersToBackingsInternal(blink::PaintLayer*,
 blink::CompositingLayerAssigner::SquashingState&, 
WTF::Vector<blink::PaintLayer*, 0ul, WTF::PartitionAllocator>&) ()
#4  0x000055555a435591 in 
blink::CompositingLayerAssigner::assignLayersToBackingsInternal(blink::PaintLayer*,
 blink::CompositingLayerAssigner::SquashingState&, 
WTF::Vector<blink::PaintLayer*, 0ul, WTF::PartitionAllocator>&) ()
#5  0x000055555a435591 in 
blink::CompositingLayerAssigner::assignLayersToBackingsInternal(blink::PaintLayer*,
 blink::CompositingLayerAssigner::SquashingState&, 
WTF::Vector<blink::PaintLayer*, 0ul, WTF::PartitionAllocator>&) ()
#6  0x000055555a435971 in 
blink::CompositingLayerAssigner::assign(blink::PaintLayer*, 
WTF::Vector<blink::PaintLayer*, 0ul, WTF::PartitionAllocator>&) ()
#7  0x000055555a2b61b9 in blink::PaintLayerCompositor::updateIfNeeded() ()
#8  0x000055555a2b767e in 
blink::PaintLayerCompositor::updateIfNeededRecursiveInternal() ()
#9  0x000055555a2b78bc in 
blink::PaintLayerCompositor::updateIfNeededRecursive() ()
#10 0x0000555559f800e9 in 
blink::FrameView::updateLifecyclePhasesInternal(blink::DocumentLifecycle::LifecycleState)
 ()
#11 0x000055555a0d6bdd in 
blink::PageAnimator::updateAllLifecyclePhases(blink::LocalFrame&) ()
#12 0x00005555596ad65c in blink::WebViewImpl::updateAllLifecyclePhases() ()
#13 0x00005555585a2dda in 
cc::ProxyMain::BeginMainFrame(std::unique_ptr<cc::BeginMainFrameAndCommitState, 
std::default_delete<cc::BeginMainFrameAndCommitState> >) ()
#14 0x00005555585ac643 in 
base::internal::Invoker<base::internal::BindState<void 
(cc::ProxyMain::*)(std::unique_ptr<cc::BeginMainFrameAndCommitState, 
std::default_delete<cc::BeginMainFrameAndCommitState> >), 
base::WeakPtr<cc::ProxyMain>, 
base::internal::PassedWrapper<std::unique_ptr<cc::BeginMainFrameAndCommitState, 
std::default_delete<cc::BeginMainFrameAndCommitState> > > >, void 
()>::Run(base::internal::BindStateBase*) ()
#15 0x00005555579b9550 in base::debug::TaskAnnotator::RunTask(char const*, 
base::PendingTask const&) ()
#16 0x00005555596690af in 
blink::scheduler::TaskQueueManager::ProcessTaskFromWorkQueue(blink::scheduler::internal::WorkQueue*,
 blink::scheduler::internal::TaskQueueImpl::Task*) ()
#17 0x00005555596696f5 in 
blink::scheduler::TaskQueueManager::DoWork(base::TimeTicks, bool) ()
#18 0x00005555579b9550 in base::debug::TaskAnnotator::RunTask(char const*, 
base::PendingTask const&) ()
#19 0x0000555557955fca in base::MessageLoop::RunTask(base::PendingTask const&) 
()
#20 0x000055555795777d in 
base::MessageLoop::DeferOrRunPendingTask(base::PendingTask) ()
#21 0x0000555557957c20 in base::MessageLoop::DoWork() ()
#22 0x0000555557958879 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#23 0x000055555797525a in base::RunLoop::Run() ()
#24 0x0000555557990ffd in base::Thread::ThreadMain() ()
#25 0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#26 0x00007ffff7bc4464 in start_thread (arg=0x7fffc6540700) at 
pthread_create.c:333
#27 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 28 (Thread 0x7fffc6da3700 (LWP 22360)):
#0  0x00007fffedc36fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff3e4d778 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#2  0x00007ffff3e37add in event_base_loop () from 
/usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#3  0x0000555557958f0a in 
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffc6da3700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 27 (Thread 0x7fffc7651700 (LWP 22359)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000555557982725 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827d4 in base::WaitableEvent::Wait() ()
#3  0x00005555579588c3 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffc7651700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 25 (Thread 0x7fffc8bfb700 (LWP 22357)):
#0  0x00007fffedc2d56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff6e3b9f6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff6e3bd82 in g_main_loop_run () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff3b5e4f6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007ffff6e63345 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff7bc4464 in start_thread (arg=0x7fffc8bfb700) at 
pthread_create.c:333
#6  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 24 (Thread 0x7fffc93fc700 (LWP 22356)):
#0  0x00007fffedc2d56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff6e3b9f6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff6e3bb0c in g_main_context_iteration () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff6e3bb51 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ffff6e63345 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff7bc4464 in start_thread (arg=0x7fffc93fc700) at 
pthread_create.c:333
#6  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 23 (Thread 0x7fffc9ebe700 (LWP 22353)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x000055555798f440 in 
base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*)
 ()
#3  0x000055555798fc39 in base::SequencedWorkerPool::Worker::Run() ()
#4  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#5  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#6  0x00007ffff7bc4464 in start_thread (arg=0x7fffc9ebe700) at 
pthread_create.c:333
#7  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 22 (Thread 0x7fffca6bf700 (LWP 22352)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x000055555798f440 in 
base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*)
 ()
#3  0x000055555798fc39 in base::SequencedWorkerPool::Worker::Run() ()
#4  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#5  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#6  0x00007ffff7bc4464 in start_thread (arg=0x7fffca6bf700) at 
pthread_create.c:333
#7  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 21 (Thread 0x7fffcaec0700 (LWP 22351)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827b5 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#3  0x0000555557958901 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffcaec0700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 20 (Thread 0x7fffd3ebf700 (LWP 22342)):
#0  0x00007fffedc2d56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fffefe02eb1 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007fffefdf4681 in pa_mainloop_poll () from 
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007fffefdf4d1e in pa_mainloop_iterate () from 
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007fffefdf4dd0 in pa_mainloop_run () from 
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007fffefe02df9 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007fffe3621238 in ?? () from 
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-9.0.so
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffd3ebf700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 19 (Thread 0x7fffd46c0700 (LWP 22341)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827b5 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#3  0x0000555557958901 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffd46c0700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 18 (Thread 0x7fffd4ec1700 (LWP 22340)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000055555854a47d in cc::SingleThreadTaskGraphRunner::Run() ()
#2  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#3  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#4  0x00007ffff7bc4464 in start_thread (arg=0x7fffd4ec1700) at 
pthread_create.c:333
#5  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 17 (Thread 0x7fffd56c2700 (LWP 22339)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000555557982725 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827d4 in base::WaitableEvent::Wait() ()
#3  0x00005555579588c3 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffd56c2700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 16 (Thread 0x7fffd5ec3700 (LWP 22338)):
#0  0x00007fffedc36fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff3e4d778 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#2  0x00007ffff3e37add in event_base_loop () from 
/usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#3  0x0000555557958fc2 in 
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555556228b38 in 
content::BrowserThreadImpl::IOThreadRun(base::RunLoop*) ()
#6  0x000055555622902b in content::BrowserThreadImpl::Run(base::RunLoop*) ()
#7  0x0000555557991098 in base::Thread::ThreadMain() ()
#8  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#9  0x00007ffff7bc4464 in start_thread (arg=0x7fffd5ec3700) at 
pthread_create.c:333
#10 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 15 (Thread 0x7fffd66c4700 (LWP 22336)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827b5 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#3  0x0000555557958901 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555556228a88 in 
content::BrowserThreadImpl::CacheThreadRun(base::RunLoop*) ()
#6  0x000055555622908b in content::BrowserThreadImpl::Run(base::RunLoop*) ()
#7  0x0000555557991098 in base::Thread::ThreadMain() ()
#8  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#9  0x00007ffff7bc4464 in start_thread (arg=0x7fffd66c4700) at 
pthread_create.c:333
#10 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 14 (Thread 0x7fffd6ec5700 (LWP 22335)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000555557982725 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827d4 in base::WaitableEvent::Wait() ()
#3  0x00005555579588c3 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x00005555562289d8 in 
content::BrowserThreadImpl::ProcessLauncherThreadRun(base::RunLoop*) ()
#6  0x000055555622907b in content::BrowserThreadImpl::Run(base::RunLoop*) ()
#7  0x0000555557991098 in base::Thread::ThreadMain() ()
#8  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#9  0x00007ffff7bc4464 in start_thread (arg=0x7fffd6ec5700) at 
pthread_create.c:333
#10 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 13 (Thread 0x7fffd76c6700 (LWP 22334)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000555557982725 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827d4 in base::WaitableEvent::Wait() ()
#3  0x00005555579588c3 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555556228928 in 
content::BrowserThreadImpl::FileUserBlockingThreadRun(base::RunLoop*) ()
#6  0x000055555622906b in content::BrowserThreadImpl::Run(base::RunLoop*) ()
#7  0x0000555557991098 in base::Thread::ThreadMain() ()
#8  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#9  0x00007ffff7bc4464 in start_thread (arg=0x7fffd76c6700) at 
pthread_create.c:333
#10 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 12 (Thread 0x7fffd7ec7700 (LWP 22333)):
#0  0x00007fffedc36fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff3e4d778 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#2  0x00007ffff3e37add in event_base_loop () from 
/usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#3  0x0000555557958fc2 in 
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555556228878 in 
content::BrowserThreadImpl::FileThreadRun(base::RunLoop*) ()
#6  0x000055555622905b in content::BrowserThreadImpl::Run(base::RunLoop*) ()
#7  0x0000555557991098 in base::Thread::ThreadMain() ()
#8  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#9  0x00007ffff7bc4464 in start_thread (arg=0x7fffd7ec7700) at 
pthread_create.c:333
#10 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 11 (Thread 0x7fffd86c8700 (LWP 22332)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x00005555579827b5 in base::WaitableEvent::TimedWait(base::TimeDelta 
const&) ()
#3  0x0000555557958901 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x00005555562287c8 in 
content::BrowserThreadImpl::DBThreadRun(base::RunLoop*) ()
#6  0x000055555622904b in content::BrowserThreadImpl::Run(base::RunLoop*) ()
#7  0x0000555557991098 in base::Thread::ThreadMain() ()
#8  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#9  0x00007ffff7bc4464 in start_thread (arg=0x7fffd86c8700) at 
pthread_create.c:333
#10 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 10 (Thread 0x7fffd8ec9700 (LWP 22331)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x000055555798f440 in 
base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*)
 ()
#3  0x000055555798fc39 in base::SequencedWorkerPool::Worker::Run() ()
#4  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#5  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#6  0x00007ffff7bc4464 in start_thread (arg=0x7fffd8ec9700) at 
pthread_create.c:333
#7  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 9 (Thread 0x7fffda991700 (LWP 22330)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x0000555557994489 in base::PosixDynamicThreadPool::WaitForTask() ()
#3  0x00005555579949da in base::(anonymous 
namespace)::WorkerThread::ThreadMain() ()
#4  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#5  0x00007ffff7bc4464 in start_thread (arg=0x7fffda991700) at 
pthread_create.c:333
#6  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7fffda999700 (LWP 22329)):
#0  0x00007ffff7bcd24d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000555557779e47 in (anonymous namespace)::ShutdownDetector::ThreadMain() 
()
#2  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#3  0x00007ffff7bc4464 in start_thread (arg=0x7fffda999700) at 
pthread_create.c:333
#4  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7fffdb19a700 (LWP 22328)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00005555579be662 in base::ConditionVariable::TimedWait(base::TimeDelta 
const&) ()
#2  0x0000555557994489 in base::PosixDynamicThreadPool::WaitForTask() ()
#3  0x00005555579949da in base::(anonymous 
namespace)::WorkerThread::ThreadMain() ()
#4  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#5  0x00007ffff7bc4464 in start_thread (arg=0x7fffdb19a700) at 
pthread_create.c:333
#6  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7fffdb99b700 (LWP 22327)):
#0  0x00007fffedc2f2b3 in select () at ../sysdeps/unix/syscall-template.S:84
#1  0x00005555579416df in base::(anonymous 
namespace)::InotifyReaderCallback(base::(anonymous namespace)::InotifyReader*, 
int) ()
#2  0x00005555579b9550 in base::debug::TaskAnnotator::RunTask(char const*, 
base::PendingTask const&) ()
#3  0x0000555557955fca in base::MessageLoop::RunTask(base::PendingTask const&) 
()
#4  0x000055555795777d in 
base::MessageLoop::DeferOrRunPendingTask(base::PendingTask) ()
#5  0x0000555557957c20 in base::MessageLoop::DoWork() ()
#6  0x0000555557958879 in 
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) ()
#7  0x000055555797525a in base::RunLoop::Run() ()
#8  0x0000555557990ffd in base::Thread::ThreadMain() ()
#9  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#10 0x00007ffff7bc4464 in start_thread (arg=0x7fffdb99b700) at 
pthread_create.c:333
#11 0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7fffdc19c700 (LWP 22326)):
#0  0x00007fffedc36fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff3e4d778 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#2  0x00007ffff3e37add in event_base_loop () from 
/usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#3  0x0000555557958fc2 in 
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffdc19c700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7fffdc99d700 (LWP 22325)):
#0  0x00007fffedc36fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff3e4d778 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#2  0x00007ffff3e37add in event_base_loop () from 
/usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
#3  0x0000555557958f0a in 
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) ()
#4  0x000055555797525a in base::RunLoop::Run() ()
#5  0x0000555557990ffd in base::Thread::ThreadMain() ()
#6  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#7  0x00007ffff7bc4464 in start_thread (arg=0x7fffdc99d700) at 
pthread_create.c:333
#8  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7fffdd5ac700 (LWP 22324)):
#0  0x00007ffff7bcdb7b in __waitpid (pid=22320, stat_loc=0x0, options=0) at 
../sysdeps/unix/sysv/linux/waitpid.c:29
#1  0x000055555796e686 in base::(anonymous 
namespace)::BackgroundReaper::ThreadMain() ()
#2  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#3  0x00007ffff7bc4464 in start_thread (arg=0x7fffdd5ac700) at 
pthread_create.c:333
#4  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7fffdddad700 (LWP 22319)):
#0  0x00007fffedc2d56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000555556483532 in content::SandboxIPCHandler::Run() ()
#2  0x0000555557990a60 in base::SimpleThread::ThreadMain() ()
#3  0x000055555798d0bd in base::(anonymous namespace)::ThreadFunc(void*) ()
#4  0x00007ffff7bc4464 in start_thread (arg=0x7fffdddad700) at 
pthread_create.c:333
#5  0x00007fffedc369df in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7ffff7efdb40 (LWP 22315)):
#0  0x0000555557e87b78 in SkMatrix44::setConcat(SkMatrix44 const&, SkMatrix44 
const&) ()
#1  0x00005555584a63e5 in views::View::GetTransformRelativeTo(views::View 
const*, gfx::Transform*) const ()
#2  0x00005555584a6762 in views::View::ConvertPointFromAncestor(views::View 
const*, gfx::Point*) const ()
#3  0x00005555584a8b5e in views::View::ConvertPointToTarget(views::View const*, 
views::View const*, gfx::Point*) ()
#4  0x00005555584a8c93 in views::View::GetTooltipHandlerForPoint(gfx::Point 
const&) ()
#5  0x00005555584a8ca3 in views::View::GetTooltipHandlerForPoint(gfx::Point 
const&) ()
#6  0x00005555584a8ca3 in views::View::GetTooltipHandlerForPoint(gfx::Point 
const&) ()
#7  0x00005555584a8ca3 in views::View::GetTooltipHandlerForPoint(gfx::Point 
const&) ()
#8  0x00005555584b2159 in 
views::NonClientView::GetTooltipHandlerForPoint(gfx::Point const&) ()
#9  0x00005555584a8ca3 in views::View::GetTooltipHandlerForPoint(gfx::Point 
const&) ()
#10 0x00005555584b70d4 in views::TooltipManagerAura::UpdateTooltip() ()
#11 0x00005555584ddd0e in 
views::DesktopNativeWidgetAura::OnMouseEvent(ui::MouseEvent*) ()
#12 0x00005555581be685 in ui::EventDispatcher::DispatchEvent(ui::EventHandler*, 
ui::Event*) ()
#13 0x00005555581bed6c in ui::EventDispatcher::ProcessEvent(ui::EventTarget*, 
ui::Event*) ()
#14 0x00005555581bee34 in 
ui::EventDispatcherDelegate::DispatchEventToTarget(ui::EventTarget*, 
ui::Event*) ()
#15 0x00005555581bef1e in 
ui::EventDispatcherDelegate::DispatchEvent(ui::EventTarget*, ui::Event*) ()
#16 0x000055555b168061 in ui::EventProcessor::OnEventFromSource(ui::Event*) ()
#17 0x000055555b1682bb in ui::EventSource::DeliverEventToProcessor(ui::Event*) 
()
#18 0x000055555b1689a6 in ui::EventSource::SendEventToProcessor(ui::Event*) ()
#19 0x00005555584bab36 in 
views::DesktopWindowTreeHostX11::DispatchMouseEvent(ui::MouseEvent*) ()
#20 0x00005555584bf142 in 
views::DesktopWindowTreeHostX11::DispatchEvent(_XEvent* const&) ()
#21 0x000055555813b9cc in ui::PlatformEventSource::DispatchEvent(_XEvent*) ()
#22 0x00005555581de30c in 
ui::X11EventSource::ExtractCookieDataDispatchEvent(_XEvent*) ()
#23 0x00005555581de46d in ui::X11EventSource::DispatchXEvents() ()
#24 0x000055555b169ecc in ui::(anonymous namespace)::XSourceDispatch(_GSource*, 
int (*)(void*), void*) ()
#25 0x00007ffff6e3b6aa in g_main_context_dispatch () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007ffff6e3ba60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007ffff6e3bb0c in g_main_context_iteration () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x0000555557958b0a in 
base::MessagePumpGlib::Run(base::MessagePump::Delegate*) ()
#29 0x000055555797525a in base::RunLoop::Run() ()
#30 0x00005555577b65ec in ChromeBrowserMainParts::MainMessageLoopRun(int*) ()
#31 0x000055555621b70a in content::BrowserMainLoop::RunMainMessageLoopParts() ()
#32 0x000055555621e3bd in content::BrowserMainRunnerImpl::Run() ()
#33 0x0000555556216619 in content::BrowserMain(content::MainFunctionParams 
const&) ()
#34 0x000055555755210f in content::ContentMainRunnerImpl::Run() ()
#35 0x0000555557550321 in content::ContentMain(content::ContentMainParams 
const&) ()
#36 0x000055555604affa in ChromeMain ()
#37 0x00007fffedb6e2b1 in __libc_start_main (main=0x555556048720 <main>, 
argc=7, argv=0x7fffffffdfc8, init=<optimized out>, fini=<optimized out>, 
rtld_fini=<optimized out>, stack_end=0x7fffffffdfb8) at ../csu/libc-start.c:291
#38 0x000055555604aeaa in _start ()
(gdb) quit
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        Inferior 1 [process 22315] will be killed.

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