User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.1) Gecko/20090718 Shiretoko/3.5.1 Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.1) Gecko/20090718 Shiretoko/3.5.1 Since 3.5 i have the problem that Firefox is not able to terminate correctly. I disabled all plugins, and started using a blank Profile (in safe mode) nothing helped. Distribution: arch Filesystem: /dev/sda3 on / type ext4 (rw) Reproducible: Always Steps to Reproduce: 1. Start Firefox 2. Close Firefox (CTRL-Q, or menu) 3. Window disappears, process will not be closed. Actual Results: Window disappears, process will not be closed. So I have to kill the process manually to restart the browser (kill PID). Expected Results: Process terminates correctly. --snip-- # strace -ffff -s 256 firefox unlink("/home/andy/.mozilla/firefox/aowqj2iz.default/lock") = 0 select(4, [3], [3], NULL, NULL) = 1 (out [3]) writev(3, [{"\231\7\2\0f\0 \0046\0\2\0e\0 \4\231\7\2\0b\0 \0046\1\2\0a\0 \4\231\7\2\0~\0 \0046\0\2\0}\0 \4\231\7\2\0\355\0 \4\231\7\2\0q\1 \0046\0\2\0\354\0 \4\231\7\2\0\221\0 \0046\1\2\0\220\0 \4\231\7\2\0\275\0 \4\231\7\2\0r\1 \0046\1\2\0\274\0 \4\231\7\2\0j\0 \0046\6\2\0i\0 \4\231\7\2\0]\0 \0046\1\2\0\\\0 \4\231\7\2\0\271\0 \0046\0\2\0\270\0 \4\231\7\2\0\215\0 \0046\0\2\0\214\0 \4\231\7\2\0\305\0 \4\231\7\2\0\207\2 \0046\0\2\0\304\0 \4\231\7\2\0\245\0 \0046\0\2\0\244\0 \4\231\7\2\0\235\0 \0046\0\2\0\234\0 \4\231\7\2\0\225\0 \4\231\7\2\0k\1 \0046\0\2\0\224\0 \4\231"..., 796}, {NULL, 0}, {""..., 0}], 3) = 796 select(4, [3], [], NULL, NULL) = 1 (in [3]) read(3, "\21\345\243\21\203\0 \4\203\0 \4\320\2\36\10\354\"\302\277\5\0\0\0\210\"\302\277z\25\t\10\34\237\243\21\203\0 \4k\1\0\0\6}V\0\1\0\0\0\240\230\302\n\230!\302\277\330X\t\10\34\2\243\21\203\0 \4\37\1\0\0\6}V\0\1:G\n\240\230\302\n\230!\302\277\320\2\36\10\34\2\243\21\203\0 \4\35\1\0\0\6}V\0\1l\24\v\240\230\302\n\230!\302\277\320\2\36\10\34\2\243\21\203\0 \4\362\0\0\0\6}V\0\1\n&\v\240\230\302\n\230!\302\277\320\2\36\10\34\2\243\21\203\0 \4\21\1\0\0\6}V\0\1\213\"\n\240\230\302\n\230!\302\277\320\2\36\10\34\2\243\21\203\0 \4T\1\0\0\6}V\0\1\210\233\t\240\230\302\n\230!\302\277\320\2\36\10\34\2\243\21\203\0 \4$\0\0\0\6}V\0\1\333\220\n\240\230\302\n\230!\302\277\320\2\36\10\34"..., 4096) = 512 read(3, 0xb788d058, 4096) = -1 EAGAIN (Resource temporarily unavailable) shmdt(0xb2859000) = 0 munmap(0xb09ae000, 4527600) = 0 select(4, [3], [3], NULL, NULL) = 1 (out [3]) writev(3, [{"\217\2\2\0003\0 \4\220\4\2\0\2\0 \4\220\4\2\0\3\0 \4<\1\2\0005\0 \4<\7\2\0002\0 \4\4\0\2\0\1\0 \4<\7\2\0\0\0 \4.\7\2\0\257\0 \4+\0\1\0"..., 68}, {NULL, 0}, {""..., 0}], 3) = 68 select(4, [3], [], NULL, NULL) = 1 (in [3]) read(3, "\21\"\252\21\1\0 \4\1\0 \4\353\215\24\10\320\2\36\10\1\0 \4H\"\302\277\301Q\23\10\34\237\252\21\1\0 \4\364\0\0\0\6}V\0\1\0\0\0\310\252\311\t\230!\302\277\330X\t\10\34\2\252\21\1\0 \4C\0\0\0\6}V\0\1dC\v\310\252\311\t\230!\302\277\320\2\36\10\34\2\252\21\1\0 \4\"\0\0\0\6}V\0\1\36\231\t\310\252\311\t\230!\302\277\320\2\36\10\34\2\252\21\1\0 \4\35\1\0\0\6}V\0\1\303\373\t\310\252\311\t\230!\302\277\320\2\36\10\34\2\252\21\1\0 \4e\1\0\0\6}V\0\1\212\"\n\310\252\311\t\230!\302\277\320\2\36\10\34\2\252\21\1\0 \4\362\0\0\0\6}V\0\1\253\302\t\310\252\311\t\230!\302\277\320\2\36\10\34\2\252\21\1\0 \4\21\1\0\0\6}V\0\1\352\300\n\310\252\311\t\230!\302\277\320\2\36\10\34"..., 4096) = 544 read(3, 0xb788d058, 4096) = -1 EAGAIN (Resource temporarily unavailable) select(4, [3], [3], NULL, NULL) = 1 (out [3]) writev(3, [{"+\2\1\0"..., 4}, {NULL, 0}, {""..., 0}], 3) = 4 select(4, [3], [], NULL, NULL) = 1 (in [3]) read(3, "\1\1\256\21\0\0\0\0Y\0\240\3\0\0\0\0008\0\0\0\310\241\36\10\270\345\334\t\0\0\0\0"..., 4096) = 32 read(3, 0xb788d058, 4096) = -1 EAGAIN (Resource temporarily unavailable) select(4, [3], [3], NULL, NULL) = 1 (out [3]) writev(3, [{"<\2\2\0+\2 \4<\4\2\0\0\1 \4<\4\2\0_\0 \4<\1\2\0h\0 \4<\7\2\0d\0 \4<\0\2\0\200\0 \4<\7\2\0\357\0 \4<\7\2\0\223\0 \4<\0\2\0\277\0 \4<\7\2\0l\0 \4<\1\2\0`\0 \4<\7\2\0\273\0 \4<\7\2\0\217\0 \4<\1\2\0\307\0 \4<\7\2\0\247\0 \4<\6\2\0\237\0 \4<\7\2\0\227\0 \4<\1\2\0\347\0 \4<\7\2\0\337\0 \4<\0\2\0p\0 \4<\7\2\0\353\0 \4<\0\2\0\343\0 \4<\7\2\0\303\0 \4<\7\2\0t\0 \4<\0\2\0|\0 \4<\7\2\0\333\1 \4<\0\2\0\312\1 \4<\7\2\0x\0 \4<\0\2\0\313\0 \4<\7\2\0\367\0 \4<\7\2\0\333\0 \4<\0\2\0\233\0 \4<"..., 508}, {NULL, 0}, {""..., 0}], 3) = 508 select(4, [3], [], NULL, NULL) = 1 (in [3]) read(3, "\1\1\356\21\0\0\0\0Y\0\240\3\0\0\0\0008\0\0\0\310\241\36\10\270\345\334\t\0\0\0\0"..., 4096) = 32 read(3, 0xb788d058, 4096) = -1 EAGAIN (Resource temporarily unavailable) close(3) = 0 select(4, [3], [3], NULL, NULL) = -1 EBADF (Bad file descriptor) futex(0xb788e094, FUTEX_WAIT_PRIVATE, 2, NULL^C <unfinished ...> --end snip-- lsof after terminate:: --snip-- firefox 3746 andy mem REG 8,3 10131640 126192 /usr/lib/mozilla/plugins/libflashplayer.so firefox 3746 andy mem REG 8,3 32516 167375 /usr/lib/xulrunner-1.9.1/components/libmozgnome.so firefox 3746 andy mem REG 8,3 815304 167340 /usr/lib/xulrunner-1.9.1/libmozjs.so firefox 3746 andy 15wW REG 8,3 0 104183 /home/andy/.mozilla/firefox/6ijoie4g.default/.parentlock firefox 3746 andy 32u REG 8,3 2048 104192 /home/andy/.mozilla/firefox/6ijoie4g.default/permissions.sqlite firefox 3746 andy 40r REG 8,3 1446030 7608 /home/andy/.mozilla/firefox/6ijoie4g.default/XUL.mfasl firefox 3746 andy 42uw REG 8,3 32768 104201 /home/andy/.mozilla/firefox/6ijoie4g.default/cookies.sqlite firefox 3746 andy 43u REG 8,3 3608 16888 /home/andy/.mozilla/firefox/6ijoie4g.default/cookies.sqlite-journal firefox 3746 andy 44r DIR 8,3 4096 104175 /home/andy/.mozilla/firefox/6ijoie4g.default --end snip--

Ouch, on the lsof you see the libflashplayer. I pasted the wrong lsof :-( I really started ff w/o libflash (moved /usr/lib/mozilla/plugins/libflashplayer.so into /tmp and restarted).

Correct lsof: andy ~ $ lsof | grep moz firefox 11769 andy mem REG 8,3 32516 167375 /usr/lib/xulrunner-1.9.1/components/libmozgnome.so firefox 11769 andy mem REG 8,3 815304 167340 /usr/lib/xulrunner-1.9.1/libmozjs.so firefox 11769 andy 18wW REG 8,3 0 170519 /home/andy/.mozilla/firefox/mbyzr8n2.default/.parentlock firefox 11769 andy 23wW REG 8,3 0 170519 /home/andy/.mozilla/firefox/mbyzr8n2.default/.parentlock firefox 11769 andy 48uw REG 8,3 2048 170550 /home/andy/.mozilla/firefox/mbyzr8n2.default/cookies.sqlite firefox 11769 andy 60u REG 8,3 2576 170574 /home/andy/.mozilla/firefox/mbyzr8n2.default/cookies.sqlite-journal firefox 11769 andy 61r DIR 8,3 4096 204878 /home/andy/.mozilla/firefox/mbyzr8n2.default And some additional info: andy ~ $ ls -al /usr/lib/mozilla/plugins/ insgesamt 8 drwxr-xr-x 2 root root 4096 19. Jul 23:41 . drwxr-xr-x 3 root root 4096 25. Feb 00:27 .. andy ~ $ killall firefox andy ~ $ rm -rf .mozilla andy ~ $ firefox -safe-mode

Two Ubuntu users (myself included) have reported this bug on ext4 systems to Launchpad at https://bugs.edge.launchpad.net/ubuntu/+source/firefox-3.5/+bug/400088. My entire computer is ext4 on several partitions (/, /boot, /home, /usr). Safe mode does not alleviate the problem.

Additionally, when Firefox performs a restart (e.g. due to addons), it does this successfully and does not hang.

Might it be possible to try a standard firefox build, not one built by ubuntu, and see if this resolves the issue?

As opener I'm using archlinux NOT Ubuntu. Archlinux is strictly upstream. Thats why i opened a direct bug @ your bugzilla. Means archlinux does not selfpatch anything. But i tried also the static build (the official one) 8b2975397f378e93d5808899efe2486b firefox-3.5.1.tar.bz2 Same effect.

Strace of the "bottom" of an strace using the official build. Similar FUTEX problems....

I am running kubuntu 9.04 and after installing firefox-3.5 I experienced the same problem as well. But now even firefox-3.0.12 has the same issue (strace shows it stopping on exact same FUTEX_WAIT_PRIVATE). I have /home on ext3. I tried deleting ~/.mozilla but it didnt remove the problem. It seems like Firefox is quitting normally sometimes, but most of the time the process hangs on the FUTEX_WAIT_PRIVATE.

@Sami yes, could be that it's not an issue with the filesystem itself (i copied the official static build over to an vfat and also to an ext3, same problem). So maybe something with glibc or kernel or CPU ? Threads ? Btw, the other apps are ALL running normally (KDE, Opera, ClawsMail, etc...etc... _ONLY_ Firefox shows up this problem). uname -a 2.6.30-ARCH #1 SMP PREEMPT Mon Jul 20 11:20:32 UTC 2009 i686 Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz GenuineIntel GNU/Linux

Update: Hm... OK, seems to be KDE specific (or kwin, whatever). I installed XFCE with Slim as Loginmanager (because KDE made me angry in some points >:-( ). And I cant see/reproduce the problem anymore. Firefox opens and closes w/o any problems. @Sami: Try perhaps also to start with another environment. If you can solve it this way, I think it could be that this bug is not (just?) Firefox specific. OR, it is solved in version 3.5.2 oO (i saw that im on 3.5.2 meanwhile). So, it's either KDE/KWIN or the new 3.5.2 Version. But in either case: I cant reproduce it right now.

I am currently using 3.5.2 (ubuntu) and am having a problem that it hangs when i exit. Using strace i get: Process 5570 attached - interrupt to quit futex(0x7f692aeaa0d0, FUTEX_WAIT_PRIVATE, 2, NULL) = ? ERESTARTSYS (To be restarted) --- SIGTERM (Terminated) @ 0 (0) --- rt_sigaction(SIGTERM, {SIG_DFL}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [TERM], NULL, 8) = 0 tgkill(5570, 5570, SIGTERM) = 0 --- SIGTERM (Terminated) @ 0 (0) --- Process 5570 detached i'll see if i can try with another window manager.

Switching to xcfe4 and starting and shutting down firefox works without a problem. But switching back to kde 4.3 it hangs when closing.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3 Same issue for me on Windows XP SP3 with Firefox 3.5.3. Firefox doesn't terminate correctly. firefox.exe keeps running and I need to use the task manager > terminate process. Reproducible 80-90% of times. Firefox seldom terminates ptoperly.

Same issue on Fedora 11 (2.6.30.9-90.fc11.x86_64) with Firefox 3.5.4 on KDE only.

Metoo. Firefox is Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2) Gecko/20100122 Firefox/3.6 built on Debian SID amd64.

I'm not experiencing this specific problem any more on Ubuntu Karmic, though I am experiencing hangs that appear related to plugins. Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.7) Gecko/20100106 Ubuntu/9.10 (karmic) Firefox/3.5.7 Qt: 4.5.2 KDE: 4.3.2 (KDE 4.3.2) KWin: 4.3.2 (KDE 4.3.2)

I've been having the same problems as the rest of you. CentOS 5.3 and CentOS 5.4... I switched to Fedora Core 12 and am still experiencing this problem. All partitions are ext4 except for /home which is still ext3. I have run with FF 3.5 and FF 3.6 including nightly build versions with the same problem. I have run with the new KDE (yuk) AND then switched to KDE (yuk) experimental WITHOUT any change in behavior. Do "we" know what is being locked by FF? Is it the same for all cases? When I issue this command, "ps -efadlcL | grep firefox" I see the original FF and all threads running and another instance trying to start. The only way to resolve this conflict that I can see is to kill the owner of the threads. This will allow FF instance 2 to continue.

Is problem gone with version 3.6 or 4.0 beta? Bug 555912 - Firefox enters futex loop after crash - a duplicate? (zug is normally correct)

I can confirm this bug as still present (and still annoying). Running on gentoo x86 (ext3 fs, local), with firefox-3.6.13 and xulrunner-1.9.2.13 this still happens everytime i try to close firefox: [pid 9921] gettimeofday({1294303284, 322229}, NULL) = 0 [pid 9921] futex(0x8151c00, FUTEX_WAKE_PRIVATE, 1) = 0 [pid 9921] clock_gettime(CLOCK_REALTIME, {1294303284, 322291382}) = 0 [pid 9921] futex(0x8152848, FUTEX_WAIT_PRIVATE, 3999, {0, 999937618}) = -1 ETIMEDOUT (Connection timed out) [pid 9921] gettimeofday({1294303285, 322390}, NULL) = 0 [pid 9921] futex(0x8151c00, FUTEX_WAKE_PRIVATE, 1) = 0 [pid 9921] clock_gettime(CLOCK_REALTIME, {1294303285, 322450622}) = 0 [pid 9921] futex(0x8152848, FUTEX_WAIT_PRIVATE, 4001, {0, 999939378}) = -1 ETIMEDOUT (Connection timed out) and repeating every 1 second.

Seeing this with Firefox 26 on openSUSE 13.1 x86_64, KDE 4.11.3 with an ext4 filesystem.

n0PxN0p added the following comment to Launchpad bug report 400088: Ubuntu 13.04 x86_64; ext4; MATE DE Package: firefox Version: 26.0+build2-0ubuntu0.13.04.2 Experiencing the same behavior, ff is unable to terminate correctly, leaving its' process that "eats" up to magical 300% of CPU time, until being killed manually. -- http://launchpad.net/bugs/400088

Just saw this on Ubuntu 13.10 x86_64; ext4; MATE GB ||/ Name Version Architecture Description ii firefox 30.0~b2+build1-0ubuntu0.13.1 amd64 Safe and easy web browser from Mozilla $ sudo strace -p 3557 -f Process 3557 attached with 23 threads [pid 3664] futex(0x7ffad64f2e24, FUTEX_WAIT_PRIVATE, 7, NULL <unfinished ...> [pid 3663] futex(0x7ffadd356ee4, FUTEX_WAIT_PRIVATE, 1, NULL <unfinished ...> [pid 3659] futex(0x7ffaeb95e464, FUTEX_WAIT_PRIVATE, 7, NULL <unfinished ...> [pid 3658] futex(0x7ffae799dc44, FUTEX_WAIT_PRIVATE, 1, NULL <unfinished ...> [pid 3657] futex(0x7ffadd534b0c, FUTEX_WAIT_PRIVATE, 1, NULL <unfinished ...> [pid 3635] restart_syscall(<... resuming interrupted call ...> <unfinished ...> [pid 3630] futex(0x7ffaf6ee0a3c, FUTEX_WAIT_PRIVATE, 63, NULL <unfinished ...> [pid 3626] futex(0x7ffaf645d2dc, FUTEX_WAIT_PRIVATE, 57, NULL <unfinished ...> [pid 3594] futex(0x7ffaf6ea835c, FUTEX_WAIT_PRIVATE, 41, NULL <unfinished ...> [pid 3592] futex(0x7ffaf77ff56c, FUTEX_WAIT_PRIVATE, 319, NULL <unfinished ...> [pid 3586] futex(0x7ffb2331490c, FUTEX_WAIT_PRIVATE, 11332, NULL <unfinished ...> [pid 3585] futex(0x7ffb2331490c, FUTEX_WAIT_PRIVATE, 11333, NULL <unfinished ...> [pid 3586] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable) [pid 3585] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable) [pid 3586] futex(0x7ffb2331490c, FUTEX_WAIT_PRIVATE, 11334, NULL <unfinished ...> [pid 3585] futex(0x7ffb2331490c, FUTEX_WAIT_PRIVATE, 11334, NULL <unfinished ...> [pid 3584] futex(0x7ffb2331490c, FUTEX_WAIT_PRIVATE, 11334, NULL <unfinished ...> [pid 3583] futex(0x7ffb2331490c, FUTEX_WAIT_PRIVATE, 11331, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 3570] restart_syscall(<... resuming interrupted call ...> <unfinished ...> [pid 3583] futex(0x7ffb2331490c, FUTEX_WAIT_PRIVATE, 11334, NULL <unfinished ...> [pid 3569] restart_syscall(<... resuming interrupted call ...> <unfinished ...> [pid 3568] futex(0x7ffb0f0aeb8c, FUTEX_WAIT_PRIVATE, 1, NULL <unfinished ...> [pid 3567] futex(0x7ffb0e68844c, FUTEX_WAIT_PRIVATE, 689, NULL <unfinished ...> [pid 3566] futex(0x7ffb0e68834c, FUTEX_WAIT_PRIVATE, 291, NULL <unfinished ...> [pid 3564] epoll_wait(12, <unfinished ...> [pid 3557] futex(0x7ffb233b414c, FUTEX_WAIT_PRIVATE, 11, NULL

I am experiencing the same problems since around FF 30 on Ubuntu 12.04 LTS and 14.04 LTS: [...] poll([{fd=9, events=POLLIN}], 1, -1) = 1 ([{fd=9, revents=POLLIN}]) recvfrom(9, "\1 \0279\4\0\0\0\6\0\0\0\0\0\0\0\4\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096, 0, NULL, NULL) = 48 recvfrom(9, 0x7ff898704074, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable) recvfrom(9, 0x7ff898704074, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=9, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=9, revents=POLLOUT}]) writev(9, [{"\16\0\2\0\272\0\300\3", 8}, {NULL, 0}, {"", 0}], 3) = 8 poll([{fd=9, events=POLLIN}], 1, -1) = 1 ([{fd=9, revents=POLLIN}]) recvfrom(9, "\1\30\0309\0\0\0\0\272\2\0\0\0\0\0\0@\6\230\4\0\0\0\0\0\0\0\0\0\0\0\0", 4096, 0, NULL, NULL) = 32 recvfrom(9, 0x7ff898704074, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable) recvfrom(9, 0x7ff898704074, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=9, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=9, revents=POLLOUT}]) writev(9, [{"(\0\4\0\272\0\300\3\272\2\0\0\0\0\0\0", 16}, {NULL, 0}, {"", 0}], 3) = 16 poll([{fd=9, events=POLLIN}], 1, -1) = 1 ([{fd=9, revents=POLLIN}]) recvfrom(9, "\1\1\0319\0\0\0\0n\273\301\0\220\6\30\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 4096, 0, NULL, NULL) = 32 recvfrom(9, 0x7ff898704074, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable) recvfrom(9, 0x7ff898704074, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable) stat("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2309, ...}) = 0 futex(0x7ff88cf438a0, FUTEX_WAIT_PRIVATE, 2, NULL