Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: firefox (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/517154
Title:
Firefox hangs when launched in NX session if NX client "multimedia"
support is enabled
Status in “firefox” package in Ubuntu:
Confirmed
Bug description:
As described in http://ubuntuforums.org/showthread.php?p=8772736, a
number of users have found that if multimedia support is enabled
within NX, Firefox refuses to launch. This might be ok if Firefox
said why it isn't launch, but it provides _zero_ feedback as to what
the problem is be... it simply hangs with no output at all even when
launched from a shell.
=========================
strace:
<.... page and pages of stuff before this.... >
open("/usr/lib/firefox-3.6/firefox", O_RDONLY) = 3
fcntl64(3, F_DUPFD, 10) = 10
close(3) = 0
fcntl64(10, F_SETFD, FD_CLOEXEC) = 0
rt_sigaction(SIGINT, NULL, {SIG_DFL, [], 0}, 8) = 0
rt_sigaction(SIGINT, {0x804f5fb, ~[RTMIN RT_1], 0}, NULL, 8) = 0
rt_sigaction(SIGQUIT, NULL, {SIG_DFL, [], 0}, 8) = 0
rt_sigaction(SIGQUIT, {SIG_DFL, ~[RTMIN RT_1], 0}, NULL, 8) = 0
rt_sigaction(SIGTERM, NULL, {SIG_DFL, [], 0}, 8) = 0
rt_sigaction(SIGTERM, {SIG_DFL, ~[RTMIN RT_1], 0}, NULL, 8) = 0
read(10, "#!/bin/sh\n#\n# ***** BEGIN LICENS"..., 8192) = 3931
pipe([3, 4]) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
child_tidptr=0xb7779938) = 16298
close(4) = 0
read(3, "/usr/lib/firefox-3.6\n", 128) = 21
--- SIGCHLD (Child exited) @ 0 (0) ---
read(3, "", 128) = 0
close(3) = 0
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 16298
pipe([3, 4]) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
child_tidptr=0xb7779938) = 16299
--- SIGCHLD (Child exited) @ 0 (0) ---
close(4) = 0
read(3, "firefox\n", 128) = 8
read(3, "", 128) = 0
close(3) = 0
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 16299
stat64("/usr/lib/firefox-3.6/run-mozilla.sh", {st_mode=S_IFREG|0755,
st_size=10469, ...}) = 0
geteuid32() = 1001
getgid32() = 1000
getegid32() = 1000
getgroups32(0, NULL) = 16
getgroups32(16, [4, 20, 21, 24, 25, 26, 29, 30, 46, 104, 106, 110, 120, 128,
1000, 1001]) = 16
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
child_tidptr=0xb7779938) = 16300
wait4(-1,
where it waits forever until I hit <ctrl-c>
^C <unfinished ...>
=========================
gdb stack trace
Reading symbols from /usr/lib/firefox-3.6/firefox-bin...Reading symbols from
/usr/lib/debug/usr/lib/firefox-3.6/firefox-bin...done.
(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/lib/firefox-3.6/firefox-bin
[Thread debugging using libthread_db enabled]
....... I hit <ctrl-c> here after waiting a long time....
Program received signal SIGINT, Interrupt.
0x00363422 in __kernel_vsyscall ()
(gdb) bt full
#0 0x00363422 in __kernel_vsyscall ()
No symbol table info available.
#1 0x005cc829 in __lll_lock_wait ()
at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/lowlevellock.S:142
No locals.
#2 0x005c7f59 in _L_lock_966 () from /lib/tls/i686/cmov/libpthread.so.0
No locals.
#3 0x005c7ec6 in __pthread_mutex_lock (mutex=0x682014)
at pthread_mutex_lock.c:101
ignore3 = 0
ignore1 = -512
ignore2 = 128
max_cnt = 6823956
__PRETTY_FUNCTION__ = "__pthread_mutex_lock"
type = <value optimized out>
#4 0x0067ac36 in malloc_mutex_lock () at jemalloc.c:1368
No locals.
#5 malloc_init_hard () at jemalloc.c:5202
i = 0
buf =
"\000\b\000\000\000\340)y\266\020\000\000\000\214\361\377\277>\177\"\000\364)y\266\340)y\266\020\000\000\000\000\000\000\000\060\270{\266\340\272{\266\260\022\262\266\000\000\000\000@\311\377\277\346\224\"\000\\\361\377\277",
'\000' <repeats 12 times>, "\177\361\377\277!\006#\000t\361\377\277\u0205#",
'\000' <repeats 17 times>"\364,
\177#\000\320\310\377\277\004\000\000\000\270\310\377\277E\a#\000\b\000\000\000\270)y\266\020\000\000\000\214\361\377\277>\177\"\000\314)y\266\270)y\266\020\000\000\000\000\000\000\000P\u0348\266\250*\u0776\260\022\262\266\000\000\000\000\300\311\377\277\346\224\"\000\\\361\377\277",
'\000' <repeats 12 times>, "\177\361\377\277x\361\377\277t\361\377\277!\006#",
'\000' <repeats 17 times>"\364,
\177#\000P\213\"\000\364\177#\000`\311\377\277\004\000\000\000@\311\377\277E\a#\000\b\000\000\000\220)y\266\020\000\000\000\214\361\377\277>\177\"\000\244)y\266\220)y\266\020\000\000\000\000\000\000\000\000\000\000\001\000\000\000\000\060\006!\267\000\200\376\267\260\022\262"...
opts = 0x237ff4 ",\277\001"
result = <value optimized out>
linklen = <value optimized out>
#6 0x0067d7b5 in malloc_init (num=1, size=20) at jemalloc.c:5181
No locals.
#7 calloc (num=1, size=20) at jemalloc.c:5896
ret = <value optimized out>
num_size = <value optimized out>
#8 0x00505106 in _dlerror_run (operate=0xfffffe00, args=0xbfffdce0)
at dlerror.c:142
result = 0x0
#9 0x00504d4c in __dlsym (handle=0xffffffff, name=0xb66978 "open")
at dlsym.c:71
args = {handle = 0xffffffff, name = 0xb66978 "open", who = 0xb666fc,
sym = 0x1}
result = <value optimized out>
#10 0x00b666fc in open (pathname=0x67f814 "/proc/cpuinfo", flags=0)
at esddsp.c:225
args = <value optimized out>
mode = <value optimized out>
func = 0
#11 0x0067ac59 in open () at /usr/include/bits/fcntl2.h:54
No locals.
#12 malloc_ncpus () at jemalloc.c:4946
fd = -1073753472
column = <value optimized out>
buf =
"P\213\"\000\300G#\000\064\356\377\277\000\000\000\000\364\177#\000P\213\"\000\214\361\377\277\222~\"\000\001\000\000\000\244\202#\000\220\354\377\277\364\177#\000\001\000\000\000\260\022\262\266\260\355\377\277P\213\"\000\\\361\377\277\000\000\000\000\364\177#\000P\213\"\000\001\000\000\000\000\020\262\266\300\355\377\277\\\361\377\277\000\000\000\000\364\177#\000P\213\"\000\214\361\377\277\001\000\000\000P-\u0776\340\355\377\277\000\000\000\000\364\177#\000P\213\"\000\214\361\377\277\222~\"\000\001\000\000\000\250*\u0776\000\356\377\277\364\177#\000\001\000\000\000\370'\u0776
\356\377\277P\213\"\000\\\361\377\277\000\000\000\000\364\177#\000P\213\"\000\001\000\000\000X%\u07760\356\377\277\\\361\377\277\000\000\000\000\364\177#\000\324\065\236\266\020ii\r\254\356\377\277\200J\"\000\206\u77b6\355\063\\\000\364\177#\000P\213\"\000\000\000\000\000\260gw\266\002\000\377\277\000\242\"\000\305\063\\\000d\022\262\266\364\177#\000|\u7776\036\000\000\000\034\357\377\277\245M\"\000\000\000\000\000\364\177#\000P\213\"\000\001\000\000\000\060\271z\000\244\375\235\266(E#\000\350"...
i = <value optimized out>
nread = <value optimized out>
#13 malloc_init_hard () at jemalloc.c:5234
i = 3221221772
buf =
"\000\001\000\000\000\060\270{\266p\335\377\277\364\177#\000\001\000\000\000h\265{\266\220\335\377\277P\213\"\000\\\361\377\277\000\000\000\000\364\177#\000P\213\"\000\001\000\000\000\260\262{\266\240\335\377\277\\\361\377\277\000\000\000\000\364\177#\000P\213\"\000\214\361\377\277\001\000\000\000\000\260{\266\300\335\377\277\000\000\000\000\364\177#\000P\213\"\000\214\361\377\277\222~\"\000\001\000\000\000hk\203\266\340\335\377\277\364\177#\000\001\000\000\000\250h\203\266\000\336\377\277P\213\"\000\\\361\377\277\000\000\000\000\364\177#\000P\213\"\000\001\000\000\000\360e\203\266\020\336\377\277\\\361\377\277P\213\"\000\000\337\377\277\344\336\377\277\f\336\377\277\360e\203\266\300\342\344\266x\345\u4da8h\203\266hk\203\266\000\260{\266\000\200\376\267\260\262{\266h\265{\266\060\270{\266\340\272{\266X)\226\266X%\u0776P\u0348\266\250*\u0776\260\022\262\266\000\000\000\000\\\361\377\277\000\000\000\000\242\213\"\001\000\000\000\000\177\361\377\277!\006#\000t\361\377\277\u0205#\000\000\000\000\000\242\213\"\001\000\000\000\000\177\361\377\277\364\177#\000\000\337\377\277\006\000\000\000\344\336\377\277E\a#\000\b\000\000\000\230e\203\266\030\000\000\000\214\361\377\277>\177\"\000\264e\203\266\230e\203\266\030\000\000\000\177\361\377\277\364\177"...
opts = 0x0
result = <value optimized out>
linklen = <value optimized out>
#14 0x0067d8c5 in malloc_init (size=352) at jemalloc.c:5181
No locals.
#15 malloc (size=352) at jemalloc.c:5772
ret = <value optimized out>
#16 0xb6a37ddf in __fopen_internal (filename=0x5b521a "/proc/filesystems",
mode=0x5b510f "r", is32=0) at iofopen.c:76
No locals.
#17 0xb6a3a42c in _IO_fopen64 (filename=0x5b521a "/proc/filesystems",
mode=0x5b510f "r") at iofopen64.c:39
No locals.
#18 0x005ab6f0 in ?? () from /lib/libselinux.so.1
No symbol table info available.
#19 0x005b4bfd in ?? () from /lib/libselinux.so.1
No symbol table info available.
#20 0x005a30c8 in _init () from /lib/libselinux.so.1
No symbol table info available.
#21 0x002298bc in call_init (l=<value optimized out>,
argc=<value optimized out>, argv=0xbffff3a4, env=0xbffff3ac)
at dl-init.c:70
init_array = <value optimized out>
#22 0x00229a21 in _dl_init (main_map=0x238670, argc=<value optimized out>,
argv=<value optimized out>, env=0xbffff3ac) at dl-init.c:134
preinit_array = 0x80
preinit_array_size = <value optimized out>
i = 46
#23 0x0021c88f in _dl_start_user () from /lib/ld-linux.so.2
No symbol table info available.
(gdb) thread apply all backtrace full
Thread 1 (Thread 0xb6772760 (LWP 7040)):
#0 0x00363422 in __kernel_vsyscall ()
No symbol table info available.
#1 0x005cc829 in __lll_lock_wait ()
at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/lowlevellock.S:142
No locals.
#2 0x005c7f59 in _L_lock_966 () from /lib/tls/i686/cmov/libpthread.so.0
No locals.
#3 0x005c7ec6 in __pthread_mutex_lock (mutex=0x682014)
at pthread_mutex_lock.c:101
ignore3 = 0
ignore1 = -512
ignore2 = 128
max_cnt = 6823956
__PRETTY_FUNCTION__ = "__pthread_mutex_lock"
type = <value optimized out>
#4 0x0067ac36 in malloc_mutex_lock () at jemalloc.c:1368
No locals.
#5 malloc_init_hard () at jemalloc.c:5202
i = 0
buf =
"\000\b\000\000\000\340)y\266\020\000\000\000\214\361\377\277>\177\"\000\364)y\266\340)y\266\020\000\000\000\000\000\000\000\060\270{\266\340\272{\266\260\022\262\266\000\000\000\000@\311\377\277\346\224\"\000\\\361\377\277",
'\000' <repeats 12 times>, "\177\361\377\277!\006#\000t\361\377\277\u0205#",
'\000' <repeats 17 times>"\364,
\177#\000\320\310\377\277\004\000\000\000\270\310\377\277E\a#\000\b\000\000\000\270)y\266\020\000\000\000\214\361\377\277>\177\"\000\314)y\266\270)y\266\020\000\000\000\000\000\000\000P\u0348\266\250*\u0776\260\022\262\266\000\000\000\000\300\311\377\277\346\224\"\000\\\361\377\277",
'\000' <repeats 12 times>, "\177\361\377\277x\361\377\277t\361\377\277!\006#",
'\000' <repeats 17 times>"\364,
\177#\000P\213\"\000\364\177#\000`\311\377\277\004\000\000\000@\311\377\277E\a#\000\b\000\000\000\220)y\266\020\000\000\000\214\361\377\277>\177\"\000\244)y\266\220)y\266\020\000\000\000\000\000\000\000\000\000\000\001\000\000\000\000\060\006!\267\000\200\376\267\260\022\262"...
opts = 0x237ff4 ",\277\001"
result = <value optimized out>
linklen = <value optimized out>
#6 0x0067d7b5 in malloc_init (num=1, size=20) at jemalloc.c:5181
No locals.
#7 calloc (num=1, size=20) at jemalloc.c:5896
ret = <value optimized out>
num_size = <value optimized out>
#8 0x00505106 in _dlerror_run (operate=0xfffffe00, args=0xbfffdce0)
at dlerror.c:142
result = 0x0
#9 0x00504d4c in __dlsym (handle=0xffffffff, name=0xb66978 "open")
at dlsym.c:71
args = {handle = 0xffffffff, name = 0xb66978 "open", who = 0xb666fc,
sym = 0x1}
result = <value optimized out>
#10 0x00b666fc in open (pathname=0x67f814 "/proc/cpuinfo", flags=0)
at esddsp.c:225
args = <value optimized out>
mode = <value optimized out>
func = 0
#11 0x0067ac59 in open () at /usr/include/bits/fcntl2.h:54
No locals.
#12 malloc_ncpus () at jemalloc.c:4946
fd = -1073753472
column = <value optimized out>
buf =
"P\213\"\000\300G#\000\064\356\377\277\000\000\000\000\364\177#\000P\213\"\000\214\361\377\277\222~\"\000\001\000\000\000\244\202#\000\220\354\377\277\364\177#\000\001\000\000\000\260\022\262\266\260\355\377\277P\213\"\000\\\361\377\277\000\000\000\000\364\177#\000P\213\"\000\001\000\000\000\000\020\262\266\300\355\377\277\\\361\377\277\000\000\000\000\364\177#\000P\213\"\000\214\361\377\277\001\000\000\000P-\u0776\340\355\377\277\000\000\000\000\364\177#\000P\213\"\000\214\361\377\277\222~\"\000\001\000\000\000\250*\u0776\000\356\377\277\364\177#\000\001\000\000\000\370'\u0776
\356\377\277P\213\"\000\\\361\377\277\000\000\000\000\364\177#\000P\213\"\000\001\000\000\000X%\u07760\356\377\277\\\361\377\277\000\000\000\000\364\177#\000\324\065\236\266\020ii\r\254\356\377\277\200J\"\000\206\u77b6\355\063\\\000\364\177#\000P\213\"\000\000\000\000\000\260gw\266\002\000\377\277\000\242\"\000\305\063\\\000d\022\262\266\364\177#\000|\u7776\036\000\000\000\034\357\377\277\245M\"\000\000\000\000\000\364\177#\000P\213\"\000\001\000\000\000\060\271z\000\244\375\235\266(E#\000\350"...
i = <value optimized out>
nread = <value optimized out>
#13 malloc_init_hard () at jemalloc.c:5234
i = 3221221772
buf =
"\000\001\000\000\000\060\270{\266p\335\377\277\364\177#\000\001\000\000\000h\265{\266\220\335\377\277P\213\"\000\\\361\377\277\000\000\000\000\364\177#\000P\213\"\000\001\000\000\000\260\262{\266\240\335\377\277\\\361\377\277\000\000\000\000\364\177#\000P\213\"\000\214\361\377\277\001\000\000\000\000\260{\266\300\335\377\277\000\000\000\000\364\177#\000P\213\"\000\214\361\377\277\222~\"\000\001\000\000\000hk\203\266\340\335\377\277\364\177#\000\001\000\000\000\250h\203\266\000\336\377\277P\213\"\000\\\361\377\277\000\000\000\000\364\177#\000P\213\"\000\001\000\000\000\360e\203\266\020\336\377\277\\\361\377\277P\213\"\000\000\337\377\277\344\336\377\277\f\336\377\277\360e\203\266\300\342\344\266x\345\u4da8h\203\266hk\203\266\000\260{\266\000\200\376\267\260\262{\266h\265{\266\060\270{\266\340\272{\266X)\226\266X%\u0776P\u0348\266\250*\u0776\260\022\262\266\000\000\000\000\\\361\377\277\000\000\000\000\242\213\"\001\000\000\000\000\177\361\377\277!\006#\000t\361\377\277\u0205#\000\000\000\000\000\242\213\"\001\000\000\000\000\177\361\377\277\364\177#\000\000\337\377\277\006\000\000\000\344\336\377\277E\a#\000\b\000\000\000\230e\203\266\030\000\000\000\214\361\377\277>\177\"\000\264e\203\266\230e\203\266\030\000\000\000\177\361\377\277\364\177"...
opts = 0x0
result = <value optimized out>
linklen = <value optimized out>
#14 0x0067d8c5 in malloc_init (size=352) at jemalloc.c:5181
No locals.
#15 malloc (size=352) at jemalloc.c:5772
ret = <value optimized out>
#16 0xb6a37ddf in __fopen_internal (filename=0x5b521a "/proc/filesystems",
mode=0x5b510f "r", is32=0) at iofopen.c:76
No locals.
#17 0xb6a3a42c in _IO_fopen64 (filename=0x5b521a "/proc/filesystems",
mode=0x5b510f "r") at iofopen64.c:39
No locals.
#18 0x005ab6f0 in ?? () from /lib/libselinux.so.1
No symbol table info available.
#19 0x005b4bfd in ?? () from /lib/libselinux.so.1
No symbol table info available.
#20 0x005a30c8 in _init () from /lib/libselinux.so.1
No symbol table info available.
#21 0x002298bc in call_init (l=<value optimized out>,
argc=<value optimized out>, argv=0xbffff3a4, env=0xbffff3ac)
at dl-init.c:70
init_array = <value optimized out>
#22 0x00229a21 in _dl_init (main_map=0x238670, argc=<value optimized out>,
argv=<value optimized out>, env=0xbffff3ac) at dl-init.c:134
preinit_array = 0x80
preinit_array_size = <value optimized out>
i = 46
#23 0x0021c88f in _dl_start_user () from /lib/ld-linux.so.2
No symbol table info available.
(gdb)
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