Backtrace:

(gdb) backtrace
#0  0x0000555555cd4dc8 in std::_Rb_tree<std::__cxx11::basic_string<unsigned 
short, base::string16_char_traits, std::allocator<unsigned short> >, 
std::pair<std::__cxx11::basic_string<unsigned short, 
base::string16_char_traits, std::allocator<unsigned short> > const, 
std::unique_ptr<base::DictionaryValue, 
std::default_delete<base::DictionaryValue> > >, 
std::_Select1st<std::pair<std::__cxx11::basic_string<unsigned short, 
base::string16_char_traits, std::allocator<unsigned short> > const, 
std::unique_ptr<base::DictionaryValue, 
std::default_delete<base::DictionaryValue> > > >, 
std::less<std::__cxx11::basic_string<unsigned short, 
base::string16_char_traits, std::allocator<unsigned short> > >, 
std::allocator<std::pair<std::__cxx11::basic_string<unsigned short, 
base::string16_char_traits, std::allocator<unsigned short> > const, 
std::unique_ptr<base::DictionaryValue, 
std::default_delete<base::DictionaryValue> > > > >::find () at 
/usr/include/c++/5/bits/stl_tree.h:2292
#1  0x0000555555cd7656 in std::map<std::__cxx11::basic_string<unsigned short, 
base::string16_char_traits, std::allocator<unsigned short> >, 
std::unique_ptr<base::DictionaryValue, 
std::default_delete<base::DictionaryValue> >, 
std::less<std::__cxx11::basic_string<unsigned short, 
base::string16_char_traits, std::allocator<unsigned short> > >, 
std::allocator<std::pair<std::__cxx11::basic_string<unsigned short, 
base::string16_char_traits, std::allocator<unsigned short> > const, 
std::unique_ptr<base::DictionaryValue, 
std::default_delete<base::DictionaryValue> > > > >::find () at 
/usr/include/c++/5/bits/stl_map.h:846
#2  extensions::NetworkingPrivateLinux::AddOrUpdateAccessPoint () at 
../../extensions/browser/api/networking_private/networking_private_linux.cc:941
#3  0x0000555555cd7df9 in 
extensions::NetworkingPrivateLinux::AddAccessPointsFromDevice () at 
../../extensions/browser/api/networking_private/networking_private_linux.cc:920
#4  0x0000555555cd8143 in 
extensions::NetworkingPrivateLinux::GetAllWiFiAccessPoints () at 
../../extensions/browser/api/networking_private/networking_private_linux.cc:733
#5  0x00007ffff791b821 in base::Callback<void (), (base::internal::CopyMode)0, 
(base::internal::RepeatMode)0>::Run() && () at ../../base/callback.h:91
#6  RunTaskAndPostReply () at 
../../base/threading/post_task_and_reply_impl.cc:45
#7  0x00007ffff78a1eea in base::Callback<void (), (base::internal::CopyMode)0, 
(base::internal::RepeatMode)0>::Run() && () at ../../base/callback.h:91
#8  base::debug::TaskAnnotator::RunTask () at 
../../base/debug/task_annotator.cc:59
#9  0x00007ffff78cae90 in base::MessageLoop::RunTask () at 
../../base/message_loop/message_loop.cc:423
#10 0x00007ffff78cc97d in base::MessageLoop::DeferOrRunPendingTask () at 
../../base/message_loop/message_loop.cc:434
#11 0x00007ffff78cd83d in base::MessageLoop::DoWork () at 
../../base/message_loop/message_loop.cc:527
#12 0x00007ffff78ce300 in base::MessagePumpLibevent::Run () at 
../../base/message_loop/message_pump_libevent.cc:219
#13 0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#14 0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#15 0x00007ffff7920e36 in base::Thread::Run () at 
../../base/threading/thread.cc:250
#16 base::Thread::ThreadMain () at ../../base/threading/thread.cc:333
#17 0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#18 0x00007ffff7bc16ba in start_thread (arg=0x7fff54e06700) at 
pthread_create.c:333
#19 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

(gdb) thread apply all backtrace

Thread 46 (Thread 0x7fff2ade0700 (LWP 17995)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff791e519 in base::SequencedWorkerPool::Inner::ThreadLoop () at 
../../base/threading/sequenced_worker_pool.cc:1094
#2  0x00007ffff791ec16 in base::SequencedWorkerPool::Worker::Run () at 
../../base/threading/sequenced_worker_pool.cc:614
#3  0x00007ffff791ffd8 in base::SimpleThread::ThreadMain () at 
../../base/threading/simple_thread.cc:68
#4  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#5  0x00007ffff7bc16ba in start_thread (arg=0x7fff2ade0700) at 
pthread_create.c:333
#6  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 45 (Thread 0x7fff2c361700 (LWP 17982)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff7906de2 in base::WaitableEvent::TimedWaitUntil () at 
../../base/synchronization/waitable_event_posix.cc:223
#3  0x00007ffff7906e3c in base::WaitableEvent::TimedWait () at 
../../base/synchronization/waitable_event_posix.cc:164
#4  0x00007ffff790dfbc in 
base::internal::SchedulerWorker::Delegate::WaitForWork () at 
../../base/task_scheduler/scheduler_worker.cc:199
#5  0x00007ffff790e966 in base::internal::SchedulerWorker::Thread::ThreadMain 
() at ../../base/task_scheduler/scheduler_worker.cc:75
#6  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#7  0x00007ffff7bc16ba in start_thread (arg=0x7fff2c361700) at 
pthread_create.c:333
#8  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 44 (Thread 0x7fff2cb62700 (LWP 17980)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff7906de2 in base::WaitableEvent::TimedWaitUntil () at 
../../base/synchronization/waitable_event_posix.cc:223
#3  0x00007ffff7906e3c in base::WaitableEvent::TimedWait () at 
../../base/synchronization/waitable_event_posix.cc:164
#4  0x00007ffff790dfbc in 
base::internal::SchedulerWorker::Delegate::WaitForWork () at 
../../base/task_scheduler/scheduler_worker.cc:199
#5  0x00007ffff790e966 in base::internal::SchedulerWorker::Thread::ThreadMain 
() at ../../base/task_scheduler/scheduler_worker.cc:75
#6  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#7  0x00007ffff7bc16ba in start_thread (arg=0x7fff2cb62700) at 
pthread_create.c:333
#8  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 43 (Thread 0x7fff2dffb700 (LWP 17931)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff7924f61 in base::PosixDynamicThreadPool::WaitForTask () at 
../../base/threading/worker_pool_posix.cc:178
#3  0x00007ffff7925432 in ThreadMain () at 
../../base/threading/worker_pool_posix.cc:95
#4  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#5  0x00007ffff7bc16ba in start_thread (arg=0x7fff2dffb700) at 
pthread_create.c:333
#6  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 42 (Thread 0x7fff2e7fc700 (LWP 17929)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff7906de2 in base::WaitableEvent::TimedWaitUntil () at 
../../base/synchronization/waitable_event_posix.cc:223
#3  0x00007ffff78cdcdb in base::MessagePumpDefault::Run () at 
../../base/message_loop/message_pump_default.cc:59
#4  0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#5  0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#6  0x00007ffff7920e36 in base::Thread::Run () at 
../../base/threading/thread.cc:250
#7  base::Thread::ThreadMain () at ../../base/threading/thread.cc:333
#8  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#9  0x00007ffff7bc16ba in start_thread (arg=0x7fff2e7fc700) at 
pthread_create.c:333
#10 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 41 (Thread 0x7fff2effd700 (LWP 17928)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff7924f61 in base::PosixDynamicThreadPool::WaitForTask () at 
../../base/threading/worker_pool_posix.cc:178
#3  0x00007ffff7925432 in ThreadMain () at 
../../base/threading/worker_pool_posix.cc:95
#4  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#5  0x00007ffff7bc16ba in start_thread (arg=0x7fff2effd700) at 
pthread_create.c:333
#6  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 40 (Thread 0x7fff2f7fe700 (LWP 17924)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff7906d4d in base::WaitableEvent::TimedWaitUntil () at 
../../base/synchronization/waitable_event_posix.cc:225
#2  0x00007ffff7906e0a in base::WaitableEvent::Wait () at 
../../base/synchronization/waitable_event_posix.cc:157
#3  0x00007ffff78cdcbd in base::MessagePumpDefault::Run () at 
../../base/message_loop/message_pump_default.cc:53
#4  0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#5  0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#6  0x00007ffff7920e36 in base::Thread::Run () at 
../../base/threading/thread.cc:250
#7  base::Thread::ThreadMain () at ../../base/threading/thread.cc:333
#8  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#9  0x00007ffff7bc16ba in start_thread (arg=0x7fff2f7fe700) at 
pthread_create.c:333
#10 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 39 (Thread 0x7fff2ffff700 (LWP 17923)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff791e519 in base::SequencedWorkerPool::Inner::ThreadLoop () at 
../../base/threading/sequenced_worker_pool.cc:1094
#2  0x00007ffff791ec16 in base::SequencedWorkerPool::Worker::Run () at 
../../base/threading/sequenced_worker_pool.cc:614
#3  0x00007ffff791ffd8 in base::SimpleThread::ThreadMain () at 
../../base/threading/simple_thread.cc:68
#4  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#5  0x00007ffff7bc16ba in start_thread (arg=0x7fff2ffff700) at 
pthread_create.c:333
#6  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 37 (Thread 0x7fff459d3700 (LWP 17903)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fffe40b7cfa in g_cond_wait_until () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffe4047999 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fffe4047fbb in g_async_queue_timeout_pop () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fffe409a60a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fffe4099bb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007ffff7bc16ba in start_thread (arg=0x7fff459d3700) at 
pthread_create.c:333
#7  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 36 (Thread 0x7fff461d4700 (LWP 17897)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff7906d4d in base::WaitableEvent::TimedWaitUntil () at 
../../base/synchronization/waitable_event_posix.cc:225
#2  0x00007ffff7906e0a in base::WaitableEvent::Wait () at 
../../base/synchronization/waitable_event_posix.cc:157
#3  0x00007ffff78cdcbd in base::MessagePumpDefault::Run () at 
../../base/message_loop/message_pump_default.cc:53
#4  0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#5  0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#6  0x00007ffff7920e36 in base::Thread::Run () at 
../../base/threading/thread.cc:250
#7  base::Thread::ThreadMain () at ../../base/threading/thread.cc:333
#8  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#9  0x00007ffff7bc16ba in start_thread (arg=0x7fff461d4700) at 
pthread_create.c:333
#10 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 34 (Thread 0x7fff477fc700 (LWP 17895)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff791e3df in base::SequencedWorkerPool::Inner::ThreadLoop () at 
../../base/threading/sequenced_worker_pool.cc:1097
#3  0x00007ffff791ec16 in base::SequencedWorkerPool::Worker::Run () at 
../../base/threading/sequenced_worker_pool.cc:614
#4  0x00007ffff791ffd8 in base::SimpleThread::ThreadMain () at 
../../base/threading/simple_thread.cc:68
#5  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#6  0x00007ffff7bc16ba in start_thread (arg=0x7fff477fc700) at 
pthread_create.c:333
#7  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 33 (Thread 0x7fff47ffd700 (LWP 17893)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff7906d4d in base::WaitableEvent::TimedWaitUntil () at 
../../base/synchronization/waitable_event_posix.cc:225
#2  0x00007ffff7906e0a in base::WaitableEvent::Wait () at 
../../base/synchronization/waitable_event_posix.cc:157
#3  0x00007ffff78cdcbd in base::MessagePumpDefault::Run () at 
../../base/message_loop/message_pump_default.cc:53
#4  0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#5  0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#6  0x00007ffff7920e36 in base::Thread::Run () at 
../../base/threading/thread.cc:250
#7  base::Thread::ThreadMain () at ../../base/threading/thread.cc:333
#8  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#9  0x00007ffff7bc16ba in start_thread (arg=0x7fff47ffd700) at 
pthread_create.c:333
#10 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 32 (Thread 0x7fff54e06700 (LWP 17892)):
#0  0x0000555555cd4dc8 in std::_Rb_tree<std::__cxx11::basic_string<unsigned 
short, base::string16_char_traits, std::allocator<unsigned short> >, 
std::pair<std::__cxx11::basic_string<unsigned short, 
base::string16_char_traits, std::allocator<unsigned short> > const, 
std::unique_ptr<base::DictionaryValue, 
std::default_delete<base::DictionaryValue> > >, 
std::_Select1st<std::pair<std::__cxx11::basic_string<unsigned short, 
base::string16_char_traits, std::allocator<unsigned short> > const, 
std::unique_ptr<base::DictionaryValue, 
std::default_delete<base::DictionaryValue> > > >, 
std::less<std::__cxx11::basic_string<unsigned short, 
base::string16_char_traits, std::allocator<unsigned short> > >, 
std::allocator<std::pair<std::__cxx11::basic_string<unsigned short, 
base::string16_char_traits, std::allocator<unsigned short> > const, 
std::unique_ptr<base::DictionaryValue, 
std::default_delete<base::DictionaryValue> > > > >::find () at 
/usr/include/c++/5/bits/stl_tree.h:2292
#1  0x0000555555cd7656 in std::map<std::__cxx11::basic_string<unsigned short, 
base::string16_char_traits, std::allocator<unsigned short> >, 
std::unique_ptr<base::DictionaryValue, 
std::default_delete<base::DictionaryValue> >, 
std::less<std::__cxx11::basic_string<unsigned short, 
base::string16_char_traits, std::allocator<unsigned short> > >, 
std::allocator<std::pair<std::__cxx11::basic_string<unsigned short, 
base::string16_char_traits, std::allocator<unsigned short> > const, 
std::unique_ptr<base::DictionaryValue, 
std::default_delete<base::DictionaryValue> > > > >::find () at 
/usr/include/c++/5/bits/stl_map.h:846
#2  extensions::NetworkingPrivateLinux::AddOrUpdateAccessPoint () at 
../../extensions/browser/api/networking_private/networking_private_linux.cc:941
#3  0x0000555555cd7df9 in 
extensions::NetworkingPrivateLinux::AddAccessPointsFromDevice () at 
../../extensions/browser/api/networking_private/networking_private_linux.cc:920
#4  0x0000555555cd8143 in 
extensions::NetworkingPrivateLinux::GetAllWiFiAccessPoints () at 
../../extensions/browser/api/networking_private/networking_private_linux.cc:733
#5  0x00007ffff791b821 in base::Callback<void (), (base::internal::CopyMode)0, 
(base::internal::RepeatMode)0>::Run() && () at ../../base/callback.h:91
#6  RunTaskAndPostReply () at 
../../base/threading/post_task_and_reply_impl.cc:45
#7  0x00007ffff78a1eea in base::Callback<void (), (base::internal::CopyMode)0, 
(base::internal::RepeatMode)0>::Run() && () at ../../base/callback.h:91
#8  base::debug::TaskAnnotator::RunTask () at 
../../base/debug/task_annotator.cc:59
#9  0x00007ffff78cae90 in base::MessageLoop::RunTask () at 
../../base/message_loop/message_loop.cc:423
#10 0x00007ffff78cc97d in base::MessageLoop::DeferOrRunPendingTask () at 
../../base/message_loop/message_loop.cc:434
#11 0x00007ffff78cd83d in base::MessageLoop::DoWork () at 
../../base/message_loop/message_loop.cc:527
#12 0x00007ffff78ce300 in base::MessagePumpLibevent::Run () at 
../../base/message_loop/message_pump_libevent.cc:219
#13 0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#14 0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#15 0x00007ffff7920e36 in base::Thread::Run () at 
../../base/threading/thread.cc:250
#16 base::Thread::ThreadMain () at ../../base/threading/thread.cc:333
#17 0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#18 0x00007ffff7bc16ba in start_thread (arg=0x7fff54e06700) at 
pthread_create.c:333
#19 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 31 (Thread 0x7fff55607700 (LWP 17891)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff7906de2 in base::WaitableEvent::TimedWaitUntil () at 
../../base/synchronization/waitable_event_posix.cc:223
#3  0x00007ffff7906e3c in base::WaitableEvent::TimedWait () at 
../../base/synchronization/waitable_event_posix.cc:164
#4  0x00007ffff790dfbc in 
base::internal::SchedulerWorker::Delegate::WaitForWork () at 
../../base/task_scheduler/scheduler_worker.cc:199
#5  0x00007ffff790e966 in base::internal::SchedulerWorker::Thread::ThreadMain 
() at ../../base/task_scheduler/scheduler_worker.cc:75
#6  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#7  0x00007ffff7bc16ba in start_thread (arg=0x7fff55607700) at 
pthread_create.c:333
#8  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 30 (Thread 0x7fff55e08700 (LWP 17890)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff7906de2 in base::WaitableEvent::TimedWaitUntil () at 
../../base/synchronization/waitable_event_posix.cc:223
#3  0x00007ffff78cdcdb in base::MessagePumpDefault::Run () at 
../../base/message_loop/message_pump_default.cc:59
#4  0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#5  0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#6  0x00007ffff7920e36 in base::Thread::Run () at 
../../base/threading/thread.cc:250
#7  base::Thread::ThreadMain () at ../../base/threading/thread.cc:333
#8  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#9  0x00007ffff7bc16ba in start_thread (arg=0x7fff55e08700) at 
pthread_create.c:333
#10 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 29 (Thread 0x7fff56858700 (LWP 17871)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff791e3df in base::SequencedWorkerPool::Inner::ThreadLoop () at 
../../base/threading/sequenced_worker_pool.cc:1097
#3  0x00007ffff791ec16 in base::SequencedWorkerPool::Worker::Run () at 
../../base/threading/sequenced_worker_pool.cc:614
#4  0x00007ffff791ffd8 in base::SimpleThread::ThreadMain () at 
../../base/threading/simple_thread.cc:68
#5  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#6  0x00007ffff7bc16ba in start_thread (arg=0x7fff56858700) at 
pthread_create.c:333
#7  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 28 (Thread 0x7fff57059700 (LWP 17870)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff791e3df in base::SequencedWorkerPool::Inner::ThreadLoop () at 
../../base/threading/sequenced_worker_pool.cc:1097
#3  0x00007ffff791ec16 in base::SequencedWorkerPool::Worker::Run () at 
../../base/threading/sequenced_worker_pool.cc:614
#4  0x00007ffff791ffd8 in base::SimpleThread::ThreadMain () at 
../../base/threading/simple_thread.cc:68
#5  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#6  0x00007ffff7bc16ba in start_thread (arg=0x7fff57059700) at 
pthread_create.c:333
#7  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 27 (Thread 0x7fff57ae1700 (LWP 17869)):
#0  0x00007fffe126470d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fffb0065861 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007fffb0056e11 in pa_mainloop_poll () from 
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007fffb00574ae in pa_mainloop_iterate () from 
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007fffb0057560 in pa_mainloop_run () from 
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007fffb00657a9 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007fff943c3078 in ?? () from 
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-8.0.so
#7  0x00007ffff7bc16ba in start_thread (arg=0x7fff57ae1700) at 
pthread_create.c:333
#8  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 26 (Thread 0x7fff74ff9700 (LWP 17868)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff7906de2 in base::WaitableEvent::TimedWaitUntil () at 
../../base/synchronization/waitable_event_posix.cc:223
#3  0x00007ffff78cdcdb in base::MessagePumpDefault::Run () at 
../../base/message_loop/message_pump_default.cc:59
#4  0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#5  0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#6  0x00007ffff7920e36 in base::Thread::Run () at 
../../base/threading/thread.cc:250
#7  base::Thread::ThreadMain () at ../../base/threading/thread.cc:333
#8  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#9  0x00007ffff7bc16ba in start_thread (arg=0x7fff74ff9700) at 
pthread_create.c:333
#10 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 25 (Thread 0x7fff757fa700 (LWP 17867)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffeeb6490d in cc::SingleThreadTaskGraphRunner::Run () at 
../../cc/raster/single_thread_task_graph_runner.cc:123
#2  0x00007ffff791ffd8 in base::SimpleThread::ThreadMain () at 
../../base/threading/simple_thread.cc:68
#3  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#4  0x00007ffff7bc16ba in start_thread (arg=0x7fff757fa700) at 
pthread_create.c:333
#5  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 24 (Thread 0x7fff75ffb700 (LWP 17866)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff7906d4d in base::WaitableEvent::TimedWaitUntil () at 
../../base/synchronization/waitable_event_posix.cc:225
#2  0x00007ffff7906e0a in base::WaitableEvent::Wait () at 
../../base/synchronization/waitable_event_posix.cc:157
#3  0x00007ffff78cdcbd in base::MessagePumpDefault::Run () at 
../../base/message_loop/message_pump_default.cc:53
#4  0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#5  0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#6  0x00007ffff7920e36 in base::Thread::Run () at 
../../base/threading/thread.cc:250
#7  base::Thread::ThreadMain () at ../../base/threading/thread.cc:333
#8  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#9  0x00007ffff7bc16ba in start_thread (arg=0x7fff75ffb700) at 
pthread_create.c:333
#10 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 23 (Thread 0x7fff767fc700 (LWP 17865)):
#0  0x00007fffe12709d3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff795c32d in epoll_dispatch () at 
../../base/third_party/libevent/epoll.c:198
#2  0x00007ffff795a574 in event_base_loop () at 
../../base/third_party/libevent/event.c:512
#3  0x00007ffff78ce412 in base::MessagePumpLibevent::Run () at 
../../base/message_loop/message_pump_libevent.cc:256
#4  0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#5  0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#6  0x00007ffff1816598 in content::BrowserThreadImpl::IOThreadRun () at 
../../content/browser/browser_thread_impl.cc:278
#7  0x00007ffff181677b in content::BrowserThreadImpl::Run () at 
../../content/browser/browser_thread_impl.cc:313
#8  0x00007ffff7920f00 in base::Thread::ThreadMain () at 
../../base/threading/thread.cc:333
#9  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#10 0x00007ffff7bc16ba in start_thread (arg=0x7fff767fc700) at 
pthread_create.c:333
#11 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 22 (Thread 0x7fff76ffd700 (LWP 17864)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff7906de2 in base::WaitableEvent::TimedWaitUntil () at 
../../base/synchronization/waitable_event_posix.cc:223
#3  0x00007ffff78cdcdb in base::MessagePumpDefault::Run () at 
../../base/message_loop/message_pump_default.cc:59
#4  0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#5  0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#6  0x00007ffff18164e8 in content::BrowserThreadImpl::CacheThreadRun () at 
../../content/browser/browser_thread_impl.cc:272
#7  0x00007ffff18167db in content::BrowserThreadImpl::Run () at 
../../content/browser/browser_thread_impl.cc:311
#8  0x00007ffff7920f00 in base::Thread::ThreadMain () at 
../../base/threading/thread.cc:333
#9  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#10 0x00007ffff7bc16ba in start_thread (arg=0x7fff76ffd700) at 
pthread_create.c:333
#11 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7fff777fe700 (LWP 17863)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff7906d4d in base::WaitableEvent::TimedWaitUntil () at 
../../base/synchronization/waitable_event_posix.cc:225
#2  0x00007ffff7906e0a in base::WaitableEvent::Wait () at 
../../base/synchronization/waitable_event_posix.cc:157
#3  0x00007ffff78cdcbd in base::MessagePumpDefault::Run () at 
../../base/message_loop/message_pump_default.cc:53
#4  0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#5  0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#6  0x00007ffff1816438 in content::BrowserThreadImpl::ProcessLauncherThreadRun 
() at ../../content/browser/browser_thread_impl.cc:266
#7  0x00007ffff18167cb in content::BrowserThreadImpl::Run () at 
../../content/browser/browser_thread_impl.cc:309
#8  0x00007ffff7920f00 in base::Thread::ThreadMain () at 
../../base/threading/thread.cc:333
#9  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#10 0x00007ffff7bc16ba in start_thread (arg=0x7fff777fe700) at 
pthread_create.c:333
#11 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7fff77fff700 (LWP 17862)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff7906d4d in base::WaitableEvent::TimedWaitUntil () at 
../../base/synchronization/waitable_event_posix.cc:225
#2  0x00007ffff7906e0a in base::WaitableEvent::Wait () at 
../../base/synchronization/waitable_event_posix.cc:157
#3  0x00007ffff78cdcbd in base::MessagePumpDefault::Run () at 
../../base/message_loop/message_pump_default.cc:53
#4  0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#5  0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#6  0x00007ffff1816388 in content::BrowserThreadImpl::FileUserBlockingThreadRun 
() at ../../content/browser/browser_thread_impl.cc:259
#7  0x00007ffff18167bb in content::BrowserThreadImpl::Run () at 
../../content/browser/browser_thread_impl.cc:307
#8  0x00007ffff7920f00 in base::Thread::ThreadMain () at 
../../base/threading/thread.cc:333
#9  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#10 0x00007ffff7bc16ba in start_thread (arg=0x7fff77fff700) at 
pthread_create.c:333
#11 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7fff94ff9700 (LWP 17861)):
#0  0x00007ffff78b8fdd in std::char_traits<char>::assign () at 
/usr/include/c++/5/bits/char_traits.h:243
#1  std::__cxx11::basic_string<char, std::char_traits<char>, 
std::allocator<char> >::_M_set_length () at 
/usr/include/c++/5/bits/basic_string.h:165
#2  std::__cxx11::basic_string<char, std::char_traits<char>, 
std::allocator<char> >::push_back () at 
/usr/include/c++/5/bits/basic_string.h:1084
#3  base::internal::JSONParser::StringBuilder::Append () at 
../../base/json/json_parser.cc:156
#4  0x00007ffff78b9c2f in base::internal::JSONParser::ConsumeStringRaw () at 
../../base/json/json_parser.cc:548
#5  0x00007ffff78b9ff8 in base::internal::JSONParser::ConsumeString () at 
../../base/json/json_parser.cc:449
#6  0x00007ffff78bcb58 in base::internal::JSONParser::ParseToken () at 
../../base/json/json_parser.cc:326
#7  0x00007ffff78bcbb1 in base::internal::JSONParser::ParseNextToken () at 
../../base/json/json_parser.cc:316
#8  0x00007ffff78bcc22 in base::internal::JSONParser::Parse () at 
../../base/json/json_parser.cc:99
#9  0x00007ffff78bcfbe in base::JSONReader::Read () at 
../../base/json/json_reader.cc:48
#10 0x0000555555c365ff in LeveldbValueStore::Get () at 
../../extensions/browser/value_store/leveldb_value_store.cc:111
#11 0x0000555555d0bab5 in 
extensions::SettingsStorageQuotaEnforcer::LazyCalculateUsage () at 
../../extensions/browser/api/storage/settings_storage_quota_enforcer.cc:228
#12 0x0000555555d0bc8b in extensions::SettingsStorageQuotaEnforcer::Remove () 
at ../../extensions/browser/api/storage/settings_storage_quota_enforcer.cc:175
#13 0x0000555555d0fe5e in extensions::WeakUnlimitedSettingsStorage::Remove () 
at ../../extensions/browser/api/storage/weak_unlimited_settings_storage.cc:55
#14 0x0000555555d0dde9 in 
extensions::StorageStorageAreaRemoveFunction::RunWithStorage () at 
../../extensions/browser/api/storage/storage_api.cc:246
#15 0x0000555555d0cb1e in extensions::SettingsFunction::AsyncRunWithStorage () 
at ../../extensions/browser/api/storage/storage_api.cc:69
#16 0x0000555555d0a714 in base::Callback<void (ValueStore*), 
(base::internal::CopyMode)1, (base::internal::RepeatMode)1>::Run(ValueStore*) 
const & () at ../../base/callback.h:80
#17 
extensions::LocalValueStoreCache::RunWithValueStoreForExtension(base::Callback<void
 (ValueStore*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> 
const&, scoped_refptr<extensions::Extension const>) () at 
../../extensions/browser/api/storage/local_value_store_cache.cc:57
#18 0x0000555555d0e7dc in base::internal::FunctorTraits<void 
(extensions::ValueStoreCache::*)(base::Callback<void (ValueStore*), 
(base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, 
scoped_refptr<extensions::Extension const>), 
void>::Invoke<extensions::ValueStoreCache*, base::Callback<void (ValueStore*), 
(base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, 
scoped_refptr<extensions::Extension const> const&>(void 
(extensions::ValueStoreCache::*)(base::Callback<void (ValueStore*), 
(base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, 
scoped_refptr<extensions::Extension const>), extensions::ValueStoreCache*&&, 
base::Callback<void (ValueStore*), (base::internal::CopyMode)1, 
(base::internal::RepeatMode)1> const&, scoped_refptr<extensions::Extension 
const> const&) () at ../../base/bind_internal.h:214
#19 base::internal::InvokeHelper<false, void>::MakeItSo<void 
(extensions::ValueStoreCache::* const&)(base::Callback<void (ValueStore*), 
(base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, 
scoped_refptr<extensions::Extension const>), extensions::ValueStoreCache*, 
base::Callback<void (ValueStore*), (base::internal::CopyMode)1, 
(base::internal::RepeatMode)1> const&, scoped_refptr<extensions::Extension 
const> const&>(void (extensions::ValueStoreCache::* const&)(base::Callback<void 
(ValueStore*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> 
const&, scoped_refptr<extensions::Extension const>), 
extensions::ValueStoreCache*&&, base::Callback<void (ValueStore*), 
(base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, 
scoped_refptr<extensions::Extension const> const&) () at 
../../base/bind_internal.h:286
#20 base::internal::Invoker<base::internal::BindState<void 
(extensions::ValueStoreCache::*)(base::Callback<void (ValueStore*), 
(base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, 
scoped_refptr<extensions::Extension const>), 
base::internal::UnretainedWrapper<extensions::ValueStoreCache>, 
base::Callback<void (ValueStore*), (base::internal::CopyMode)1, 
(base::internal::RepeatMode)1>, scoped_refptr<extensions::Extension const> >, 
void ()>::RunImpl<void (extensions::ValueStoreCache::* 
const&)(base::Callback<void (ValueStore*), (base::internal::CopyMode)1, 
(base::internal::RepeatMode)1> const&, scoped_refptr<extensions::Extension 
const>), 
std::tuple<base::internal::UnretainedWrapper<extensions::ValueStoreCache>, 
base::Callback<void (ValueStore*), (base::internal::CopyMode)1, 
(base::internal::RepeatMode)1>, scoped_refptr<extensions::Extension const> > 
const&, 0ul, 1ul, 2ul>(void (extensions::ValueStoreCache::* 
const&)(base::Callback<void (ValueStore*), (base::internal::CopyM
 ode)1, (base::internal::RepeatMode)1> const&, 
scoped_refptr<extensions::Extension const>), 
std::tuple<base::internal::UnretainedWrapper<extensions::ValueStoreCache>, 
base::Callback<void (ValueStore*), (base::internal::CopyMode)1, 
(base::internal::RepeatMode)1>, scoped_refptr<extensions::Extension const> > 
const&, base::IndexSequence<0ul, 1ul, 2ul>) () at ../../base/bind_internal.h:364
#21 base::internal::Invoker<base::internal::BindState<void 
(extensions::ValueStoreCache::*)(base::Callback<void (ValueStore*), 
(base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, 
scoped_refptr<extensions::Extension const>), 
base::internal::UnretainedWrapper<extensions::ValueStoreCache>, 
base::Callback<void (ValueStore*), (base::internal::CopyMode)1, 
(base::internal::RepeatMode)1>, scoped_refptr<extensions::Extension const> >, 
void ()>::Run(base::internal::BindStateBase*) () at 
../../base/bind_internal.h:342
#22 0x00007ffff78a1eea in base::Callback<void (), (base::internal::CopyMode)0, 
(base::internal::RepeatMode)0>::Run() && () at ../../base/callback.h:91
#23 base::debug::TaskAnnotator::RunTask () at 
../../base/debug/task_annotator.cc:59
#24 0x00007ffff78cae90 in base::MessageLoop::RunTask () at 
../../base/message_loop/message_loop.cc:423
#25 0x00007ffff78cc97d in base::MessageLoop::DeferOrRunPendingTask () at 
../../base/message_loop/message_loop.cc:434
#26 0x00007ffff78cd83d in base::MessageLoop::DoWork () at 
../../base/message_loop/message_loop.cc:527
#27 0x00007ffff78ce300 in base::MessagePumpLibevent::Run () at 
../../base/message_loop/message_pump_libevent.cc:219
#28 0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#29 0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#30 0x00007ffff18162d8 in content::BrowserThreadImpl::FileThreadRun () at 
../../content/browser/browser_thread_impl.cc:252
#31 0x00007ffff18167ab in content::BrowserThreadImpl::Run () at 
../../content/browser/browser_thread_impl.cc:305
#32 0x00007ffff7920f00 in base::Thread::ThreadMain () at 
../../base/threading/thread.cc:333
#33 0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#34 0x00007ffff7bc16ba in start_thread (arg=0x7fff94ff9700) at 
pthread_create.c:333
#35 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7fff957fa700 (LWP 17860)):
#0  0x00007fffe12667dd in fdatasync () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fffec252730 in full_fsync () at 
../../third_party/sqlite/amalgamation/sqlite3.c:33298
#2  unixSync () at ../../third_party/sqlite/amalgamation/sqlite3.c:33391
#3  0x00007fffec270d30 in sqlite3PagerCommitPhaseOne () at 
../../third_party/sqlite/amalgamation/sqlite3.c:53290
#4  0x00007fffec270ee8 in sqlite3BtreeCommitPhaseOne () at 
../../third_party/sqlite/amalgamation/sqlite3.c:62760
#5  0x00007fffec286e89 in sqlite3BtreeCommitPhaseOne () at 
../../third_party/sqlite/amalgamation/sqlite3.c:73712
#6  vdbeCommit () at ../../third_party/sqlite/amalgamation/sqlite3.c:8048
#7  sqlite3VdbeHalt () at ../../third_party/sqlite/amalgamation/sqlite3.c:8449
#8  0x00007fffec28e76d in sqlite3VdbeExec () at 
../../third_party/sqlite/amalgamation/sqlite3.c:81256
#9  0x00007fffec292c9f in sqlite3Step () at 
../../third_party/sqlite/amalgamation/sqlite3.c:76563
#10 sqlite3_step () at ../../third_party/sqlite/amalgamation/sqlite3.c:11088
#11 0x00007fffec9fbf29 in sql::Statement::StepInternal () at 
../../sql/statement.cc:69
#12 0x00007fffec9fbf9b in sql::Statement::RunWithoutTimers () at 
../../sql/statement.cc:94
#13 0x00007fffec9f639c in sql::Connection::CommitTransaction () at 
../../sql/connection.cc:1325
#14 0x00007fffecc09cbd in WebDatabaseBackend::Commit () at 
../../components/webdata/common/web_database_backend.cc:142
#15 0x00007fffecc09d20 in 
WebDatabaseBackend::ExecuteWriteTask(base::Callback<WebDatabase::State 
(WebDatabase*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> 
const&) () at ../../components/webdata/common/web_database_backend.cc:68
#16 0x00007fffecc09d6b in 
WebDatabaseBackend::DBWriteTaskWrapper(base::Callback<WebDatabase::State 
(WebDatabase*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> 
const&, std::unique_ptr<WebDataRequest, std::default_delete<WebDataRequest> >) 
() at ../../components/webdata/common/web_database_backend.cc:58
#17 0x00007fffecc0b1ef in base::internal::FunctorTraits<void 
(WebDatabaseBackend::*)(base::Callback<WebDatabase::State (WebDatabase*), 
(base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, 
std::unique_ptr<WebDataRequest, std::default_delete<WebDataRequest> >), 
void>::Invoke<scoped_refptr<WebDatabaseBackend> const&, 
base::Callback<WebDatabase::State (WebDatabase*), (base::internal::CopyMode)1, 
(base::internal::RepeatMode)1> const&, std::unique_ptr<WebDataRequest, 
std::default_delete<WebDataRequest> > >(void 
(WebDatabaseBackend::*)(base::Callback<WebDatabase::State (WebDatabase*), 
(base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, 
std::unique_ptr<WebDataRequest, std::default_delete<WebDataRequest> >), 
scoped_refptr<WebDatabaseBackend> const&, base::Callback<WebDatabase::State 
(WebDatabase*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> 
const&, std::unique_ptr<WebDataRequest, std::default_delete<WebDataRequest> 
>&&) () at ../../base/bind_int
 ernal.h:214
#18 base::internal::InvokeHelper<false, void>::MakeItSo<void 
(WebDatabaseBackend::* const&)(base::Callback<WebDatabase::State 
(WebDatabase*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> 
const&, std::unique_ptr<WebDataRequest, std::default_delete<WebDataRequest> >), 
scoped_refptr<WebDatabaseBackend> const&, base::Callback<WebDatabase::State 
(WebDatabase*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> 
const&, std::unique_ptr<WebDataRequest, std::default_delete<WebDataRequest> > 
>(void (WebDatabaseBackend::* const&)(base::Callback<WebDatabase::State 
(WebDatabase*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> 
const&, std::unique_ptr<WebDataRequest, std::default_delete<WebDataRequest> >), 
scoped_refptr<WebDatabaseBackend> const&, base::Callback<WebDatabase::State 
(WebDatabase*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> 
const&, std::unique_ptr<WebDataRequest, std::default_delete<WebDataRequest> 
>&&) () at ../../base/bind_int
 ernal.h:286
#19 base::internal::Invoker<base::internal::BindState<void 
(WebDatabaseBackend::*)(base::Callback<WebDatabase::State (WebDatabase*), 
(base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, 
std::unique_ptr<WebDataRequest, std::default_delete<WebDataRequest> >), 
scoped_refptr<WebDatabaseBackend>, base::Callback<WebDatabase::State 
(WebDatabase*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1>, 
base::internal::PassedWrapper<std::unique_ptr<WebDataRequest, 
std::default_delete<WebDataRequest> > > >, void ()>::RunImpl<void 
(WebDatabaseBackend::* const&)(base::Callback<WebDatabase::State 
(WebDatabase*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> 
const&, std::unique_ptr<WebDataRequest, std::default_delete<WebDataRequest> >), 
std::tuple<scoped_refptr<WebDatabaseBackend>, base::Callback<WebDatabase::State 
(WebDatabase*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1>, 
base::internal::PassedWrapper<std::unique_ptr<WebDataRequest, std::defaul
 t_delete<WebDataRequest> > > > const&, 0ul, 1ul, 2ul>(void 
(WebDatabaseBackend::* const&)(base::Callback<WebDatabase::State 
(WebDatabase*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> 
const&, std::unique_ptr<WebDataRequest, std::default_delete<WebDataRequest> >), 
std::tuple<scoped_refptr<WebDatabaseBackend>, base::Callback<WebDatabase::State 
(WebDatabase*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1>, 
base::internal::PassedWrapper<std::unique_ptr<WebDataRequest, 
std::default_delete<WebDataRequest> > > > const&, base::IndexSequence<0ul, 1ul, 
2ul>) () at ../../base/bind_internal.h:364
#20 base::internal::Invoker<base::internal::BindState<void 
(WebDatabaseBackend::*)(base::Callback<WebDatabase::State (WebDatabase*), 
(base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, 
std::unique_ptr<WebDataRequest, std::default_delete<WebDataRequest> >), 
scoped_refptr<WebDatabaseBackend>, base::Callback<WebDatabase::State 
(WebDatabase*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1>, 
base::internal::PassedWrapper<std::unique_ptr<WebDataRequest, 
std::default_delete<WebDataRequest> > > >, void 
()>::Run(base::internal::BindStateBase*) () at ../../base/bind_internal.h:342
#21 0x00007ffff78a1eea in base::Callback<void (), (base::internal::CopyMode)0, 
(base::internal::RepeatMode)0>::Run() && () at ../../base/callback.h:91
#22 base::debug::TaskAnnotator::RunTask () at 
../../base/debug/task_annotator.cc:59
#23 0x00007ffff78cae90 in base::MessageLoop::RunTask () at 
../../base/message_loop/message_loop.cc:423
#24 0x00007ffff78cc97d in base::MessageLoop::DeferOrRunPendingTask () at 
../../base/message_loop/message_loop.cc:434
#25 0x00007ffff78cd83d in base::MessageLoop::DoWork () at 
../../base/message_loop/message_loop.cc:527
#26 0x00007ffff78cdc79 in base::MessagePumpDefault::Run () at 
../../base/message_loop/message_pump_default.cc:33
#27 0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#28 0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#29 0x00007ffff1816228 in content::BrowserThreadImpl::DBThreadRun () at 
../../content/browser/browser_thread_impl.cc:246
#30 0x00007ffff181679b in content::BrowserThreadImpl::Run () at 
../../content/browser/browser_thread_impl.cc:303
#31 0x00007ffff7920f00 in base::Thread::ThreadMain () at 
../../base/threading/thread.cc:333
#32 0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#33 0x00007ffff7bc16ba in start_thread (arg=0x7fff957fa700) at 
pthread_create.c:333
#34 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7fff95ffb700 (LWP 17859)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff7906de2 in base::WaitableEvent::TimedWaitUntil () at 
../../base/synchronization/waitable_event_posix.cc:223
#3  0x00007ffff7906e3c in base::WaitableEvent::TimedWait () at 
../../base/synchronization/waitable_event_posix.cc:164
#4  0x00007ffff790dfbc in 
base::internal::SchedulerWorker::Delegate::WaitForWork () at 
../../base/task_scheduler/scheduler_worker.cc:199
#5  0x00007ffff790e966 in base::internal::SchedulerWorker::Thread::ThreadMain 
() at ../../base/task_scheduler/scheduler_worker.cc:75
#6  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#7  0x00007ffff7bc16ba in start_thread (arg=0x7fff95ffb700) at 
pthread_create.c:333
#8  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7fff967fc700 (LWP 17858)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff7906de2 in base::WaitableEvent::TimedWaitUntil () at 
../../base/synchronization/waitable_event_posix.cc:223
#3  0x00007ffff7906e3c in base::WaitableEvent::TimedWait () at 
../../base/synchronization/waitable_event_posix.cc:164
#4  0x00007ffff790dfbc in 
base::internal::SchedulerWorker::Delegate::WaitForWork () at 
../../base/task_scheduler/scheduler_worker.cc:199
#5  0x00007ffff790e966 in base::internal::SchedulerWorker::Thread::ThreadMain 
() at ../../base/task_scheduler/scheduler_worker.cc:75
#6  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#7  0x00007ffff7bc16ba in start_thread (arg=0x7fff967fc700) at 
pthread_create.c:333
#8  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7fff96ffd700 (LWP 17857)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff7906de2 in base::WaitableEvent::TimedWaitUntil () at 
../../base/synchronization/waitable_event_posix.cc:223
#3  0x00007ffff7906e3c in base::WaitableEvent::TimedWait () at 
../../base/synchronization/waitable_event_posix.cc:164
#4  0x00007ffff790dfbc in 
base::internal::SchedulerWorker::Delegate::WaitForWork () at 
../../base/task_scheduler/scheduler_worker.cc:199
#5  0x00007ffff790e966 in base::internal::SchedulerWorker::Thread::ThreadMain 
() at ../../base/task_scheduler/scheduler_worker.cc:75
#6  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#7  0x00007ffff7bc16ba in start_thread (arg=0x7fff96ffd700) at 
pthread_create.c:333
#8  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7fff977fe700 (LWP 17856)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff7906de2 in base::WaitableEvent::TimedWaitUntil () at 
../../base/synchronization/waitable_event_posix.cc:223
#3  0x00007ffff7906e3c in base::WaitableEvent::TimedWait () at 
../../base/synchronization/waitable_event_posix.cc:164
#4  0x00007ffff790dfbc in 
base::internal::SchedulerWorker::Delegate::WaitForWork () at 
../../base/task_scheduler/scheduler_worker.cc:199
#5  0x00007ffff790e6dc in base::internal::SchedulerWorker::Thread::ThreadMain 
() at ../../base/task_scheduler/scheduler_worker.cc:44
#6  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#7  0x00007ffff7bc16ba in start_thread (arg=0x7fff977fe700) at 
pthread_create.c:333
#8  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7fff97fff700 (LWP 17855)):
#0  0x00007fffe12709d3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff795c32d in epoll_dispatch () at 
../../base/third_party/libevent/epoll.c:198
#2  0x00007ffff795a574 in event_base_loop () at 
../../base/third_party/libevent/event.c:512
#3  0x00007ffff78ce359 in base::MessagePumpLibevent::Run () at 
../../base/message_loop/message_pump_libevent.cc:246
#4  0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#5  0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#6  0x00007ffff7920e36 in base::Thread::Run () at 
../../base/threading/thread.cc:250
#7  base::Thread::ThreadMain () at ../../base/threading/thread.cc:333
#8  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#9  0x00007ffff7bc16ba in start_thread (arg=0x7fff97fff700) at 
pthread_create.c:333
#10 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7fffb27fc700 (LWP 17854)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff7924f61 in base::PosixDynamicThreadPool::WaitForTask () at 
../../base/threading/worker_pool_posix.cc:178
#3  0x00007ffff7925432 in ThreadMain () at 
../../base/threading/worker_pool_posix.cc:95
#4  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#5  0x00007ffff7bc16ba in start_thread (arg=0x7fffb27fc700) at 
pthread_create.c:333
#6  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fffb2ffd700 (LWP 17853)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007ffff79063e2 in base::ConditionVariable::TimedWait () at 
../../base/synchronization/condition_variable_posix.cc:117
#2  0x00007ffff7924f61 in base::PosixDynamicThreadPool::WaitForTask () at 
../../base/threading/worker_pool_posix.cc:178
#3  0x00007ffff7925432 in ThreadMain () at 
../../base/threading/worker_pool_posix.cc:95
#4  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#5  0x00007ffff7bc16ba in start_thread (arg=0x7fffb2ffd700) at 
pthread_create.c:333
#6  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fffb37fe700 (LWP 17851)):
#0  0x00007fffe1266593 in select () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff78abb77 in InotifyReaderCallback () at 
../../base/files/file_path_watcher_linux.cc:209
#2  0x00007ffff78a1eea in base::Callback<void (), (base::internal::CopyMode)0, 
(base::internal::RepeatMode)0>::Run() && () at ../../base/callback.h:91
#3  base::debug::TaskAnnotator::RunTask () at 
../../base/debug/task_annotator.cc:59
#4  0x00007ffff78cae90 in base::MessageLoop::RunTask () at 
../../base/message_loop/message_loop.cc:423
#5  0x00007ffff78cc97d in base::MessageLoop::DeferOrRunPendingTask () at 
../../base/message_loop/message_loop.cc:434
#6  0x00007ffff78cd83d in base::MessageLoop::DoWork () at 
../../base/message_loop/message_loop.cc:527
#7  0x00007ffff78cdc79 in base::MessagePumpDefault::Run () at 
../../base/message_loop/message_pump_default.cc:33
#8  0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#9  0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#10 0x00007ffff7920e36 in base::Thread::Run () at 
../../base/threading/thread.cc:250
#11 base::Thread::ThreadMain () at ../../base/threading/thread.cc:333
#12 0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#13 0x00007ffff7bc16ba in start_thread (arg=0x7fffb37fe700) at 
pthread_create.c:333
#14 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fffcc099700 (LWP 17852)):
#0  0x00007ffff7bca51d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000555555e20fc7 in read () at 
/usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  ThreadMain () at ../../chrome/app/shutdown_signal_handlers_posix.cc:133
#3  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#4  0x00007ffff7bc16ba in start_thread (arg=0x7fffcc099700) at 
pthread_create.c:333
#5  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fffb3fff700 (LWP 17850)):
#0  0x00007fffe12709d3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff795c32d in epoll_dispatch () at 
../../base/third_party/libevent/epoll.c:198
#2  0x00007ffff795a574 in event_base_loop () at 
../../base/third_party/libevent/event.c:512
#3  0x00007ffff78ce412 in base::MessagePumpLibevent::Run () at 
../../base/message_loop/message_pump_libevent.cc:256
#4  0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#5  0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#6  0x00007ffff7920e36 in base::Thread::Run () at 
../../base/threading/thread.cc:250
#7  base::Thread::ThreadMain () at ../../base/threading/thread.cc:333
#8  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#9  0x00007ffff7bc16ba in start_thread (arg=0x7fffb3fff700) at 
pthread_create.c:333
#10 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fffc4aea700 (LWP 17849)):
#0  0x00007fffe12709d3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff795c32d in epoll_dispatch () at 
../../base/third_party/libevent/epoll.c:198
#2  0x00007ffff795a574 in event_base_loop () at 
../../base/third_party/libevent/event.c:512
#3  0x00007ffff78ce359 in base::MessagePumpLibevent::Run () at 
../../base/message_loop/message_pump_libevent.cc:246
#4  0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#5  0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#6  0x00007ffff7920e36 in base::Thread::Run () at 
../../base/threading/thread.cc:250
#7  base::Thread::ThreadMain () at ../../base/threading/thread.cc:333
#8  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#9  0x00007ffff7bc16ba in start_thread (arg=0x7fffc4aea700) at 
pthread_create.c:333
#10 0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fffc69d8700 (LWP 17848)):
#0  0x00007fffe126470d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fffe407338c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffe4073712 in g_main_loop_run () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fffe21629d6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fffe4099bb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff7bc16ba in start_thread (arg=0x7fffc69d8700) at 
pthread_create.c:333
#6  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fffc71d9700 (LWP 17847)):
#0  0x00007fffe126470d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fffe407338c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffe407349c in g_main_context_iteration () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fffe40734d9 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fffe4099bb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff7bc16ba in start_thread (arg=0x7fffc71d9700) at 
pthread_create.c:333
#6  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fffc79da700 (LWP 17846)):
#0  0x00007fffe126470d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fffe407338c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffe407349c in g_main_context_iteration () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fffc79e228d in ?? () from 
/usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
#4  0x00007fffe4099bb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff7bc16ba in start_thread (arg=0x7fffc79da700) at 
pthread_create.c:333
#6  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fffcc9d6700 (LWP 17845)):
#0  0x00007ffff7bcaf7b in __waitpid (pid=17840, stat_loc=0x0, options=0) at 
../sysdeps/unix/sysv/linux/waitpid.c:29
#1  0x00007ffff78ec2d6 in WaitForChildToDie () at 
../../base/process/kill_posix.cc:172
#2  ThreadMain () at ../../base/process/kill_posix.cc:165
#3  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#4  0x00007ffff7bc16ba in start_thread (arg=0x7fffcc9d6700) at 
pthread_create.c:333
#5  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fffcd1d7700 (LWP 17837)):
#0  0x00007fffe126470d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff1abd30a in poll () at 
/usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  content::SandboxIPCHandler::Run () at 
../../content/browser/renderer_host/sandbox_ipc_linux.cc:84
#3  0x00007ffff791ffd8 in base::SimpleThread::ThreadMain () at 
../../base/threading/simple_thread.cc:68
#4  0x00007ffff791b726 in ThreadFunc () at 
../../base/threading/platform_thread_posix.cc:71
#5  0x00007ffff7bc16ba in start_thread (arg=0x7fffcd1d7700) at 
pthread_create.c:333
#6  0x00007fffe12703dd in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7ffff7edca80 (LWP 17825)):
#0  0x00007fffe126470d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fffe407338c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffe407349c in g_main_context_iteration () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff78cde4a in base::MessagePumpGlib::Run () at 
../../base/message_loop/message_pump_glib.cc:309
#4  0x00007ffff78c9f15 in base::MessageLoop::RunHandler () at 
../../base/message_loop/message_loop.cc:387
#5  0x00007ffff78f4628 in base::RunLoop::Run () at ../../base/run_loop.cc:37
#6  0x0000555556182bec in ChromeBrowserMainParts::MainMessageLoopRun () at 
../../chrome/browser/chrome_browser_main.cc:1977
#7  0x00007ffff180714a in content::BrowserMainLoop::RunMainMessageLoopParts () 
at ../../content/browser/browser_main_loop.cc:1179
#8  0x00007ffff1809c0d in content::BrowserMainRunnerImpl::Run () at 
../../content/browser/browser_main_runner.cc:140
#9  0x00007ffff1802329 in content::BrowserMain () at 
../../content/browser/browser_main.cc:46
#10 0x00007ffff1f29baf in content::ContentMainRunnerImpl::Run () at 
../../content/app/content_main_runner.cc:740
#11 0x00007fffdea4834a in service_manager::Main () at 
../../services/service_manager/embedder/main.cc:179
#12 0x00007ffff1f286f1 in content::ContentMain () at 
../../content/app/content_main.cc:19
#13 0x0000555555af6ab4 in ChromeMain () at ../../chrome/app/chrome_main.cc:123
#14 0x00007fffe1189830 in __libc_start_main (main=0x555555af4c20 <main()>, 
argc=4, argv=0x7fffffffdc68, init=<optimized out>, fini=<optimized out>, 
rtld_fini=<optimized out>, stack_end=0x7fffffffdc58) at ../csu/libc-start.c:291
#15 0x0000555555af6949 in _start ()

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https://bugs.launchpad.net/bugs/1702456

Title:
  Chromium cannot found pepperflash plugin

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