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cmrd
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Joined: 13 Jul 2014
Posts: 44
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 Posted: Sun Dec 27, 2020 10:03 pm Post subject: firefox segfault, firefox-bin works |
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I'm consistently unable to run firefox on my system:
Running firefox -p launches the profile selection window, but no matter what I select, I get a segfault as soon as I click "Start firefox".
When built with the debug use flag, it gives an arcane warning about a locale and not much useful info, but eselect locale list says my locale is en_GB.utf8.
The same symptoms happen when I build stable and ~amd64.
I'm using the default USE flags.
When I install firefox-bin it runs fine.
Running strace produces a 762k file, which doesn't give me any clues. The last 100 lines are below.
Having spent a while troubleshooting this, I'm starting to suspect miscompilation - should I open a bug?
Any ideas what I can try to get firefox not -bin running?
| Code: | futex(0x7fc763f37f38, FUTEX_WAKE_PRIVATE, 2147483647) = 0
... repeated lots of times
futex(0x7fc7659ca250, FUTEX_WAKE_PRIVATE, 1) = 1
mmap(NULL, 8392704, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc7410ff000
mprotect(0x7fc741100000, 8388608, PROT_READ|PROT_WRITE) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
clone(child_stack=0x7fc7418feeb0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[29742], tls=0x7fc7418ff640, child_tidptr=0x7fc7418ff910) = 29742
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
futex(0x7fc7659ca040, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7fc757a7fb0c, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7fc757a7fab0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7fc757aa8430, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7fc757a7fb08, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7fc757a7fab0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7fc757aa8430, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7fc757a7fb0c, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7fc757a7fab0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7fc757aa8430, FUTEX_WAKE_PRIVATE, 1) = 1
mmap(0x7fc765a03000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fc765a03000
getrandom("\x5e\xeb\x26\xb2\x82\x81\x0e\x41", 8, GRND_NONBLOCK) = 8
getrandom("\x88\x5d\x67\xf7\xe0\x53\x25\xfa", 8, GRND_NONBLOCK) = 8
getrandom("\x63\xe4\x81\x85\xb4\x93\x54\xb4", 8, GRND_NONBLOCK) = 8
mmap(NULL, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc740fff000
munmap(0x7fc740fff000, 1048576) = 0
mmap(NULL, 2093056, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc740f00000
munmap(0x7fc741000000, 1044480) = 0
mmap(0x7fc740fff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fc740fff000
gettid() = 29639
getpid() = 29639
getpid() = 29639
futex(0x7fc757a7fb08, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7fc757a7fab0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7fc757aa8430, FUTEX_WAKE_PRIVATE, 1) = 1
memfd_create("mozilla-ipc", MFD_CLOEXEC|MFD_ALLOW_SEALING) = 51
openat(AT_FDCWD, "/proc/self/fd/51", O_RDONLY|O_CLOEXEC) = 52
fallocate(51, 0, 0, 460800) = 0
mmap(NULL, 17179869184, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc340f00000
munmap(0x7fc340f00000, 17179869184) = 0
mmap(0x7fc540f00000, 460800, PROT_READ|PROT_WRITE, MAP_SHARED, 51, 0) = 0x7fc540f00000
mmap(NULL, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc740e00000
mmap(0x7fc740eff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fc740eff000
munmap(0x7fc540f00000, 460800) = 0
fcntl(51, F_ADD_SEALS, F_SEAL_SEAL|F_SEAL_SHRINK|F_SEAL_GROW|F_SEAL_FUTURE_WRITE) = 0
close(51) = 0
mmap(0x7fc540f00000, 460800, PROT_READ, MAP_SHARED, 52, 0) = 0x7fc540f00000
futex(0x7fc741f74b00, FUTEX_WAKE_PRIVATE, 2147483647) = 1
futex(0x7fc757a8e920, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7fc757a3e8c0, FUTEX_WAKE_PRIVATE, 1) = 1
--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
unlink("/tmp/firefox/lock") = 0
close(11) = 0
unlink("/home/sklv/.mozilla/firefox/d1jyz2k4.default-release/lock") = 0
close(12) = 0
rt_sigaction(SIGSEGV, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc76615dcf0}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [SEGV], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[RTMIN RT_1], [], 8) = 0
getpid() = 29639
gettid() = 29639
tgkill(29639, 29639, SIGSEGV) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
--- SIGSEGV {si_signo=SIGSEGV, si_code=SI_TKILL, si_pid=29639, si_uid=1000} ---
+++ killed by SIGSEGV +++
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mike155
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Joined: 17 Sep 2010
Posts: 4438
Location: Frankfurt, Germany
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| Posted: Sun Dec 27, 2020 10:10 pm Post subject: |
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Firefox 84 crashes on my machine, too.
But it works if I start it with
| Code: | | MOZ_DISABLE_WAYLAND=1 firefox |
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cmrd
n00b
Joined: 13 Jul 2014
Posts: 44
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| Posted: Sun Dec 27, 2020 10:19 pm Post subject: |
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| mike155 wrote: | But it works if I start it with
| Code: | | MOZ_DISABLE_WAYLAND=1 firefox |
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| Code: | | GDK_BACKEND=x11 MOZ_DISABLE_WAYLAND=1 firefox |
Did launch FF successfully, that's progress!
So how come firefox-bin doesn't have this issue? |
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mike155
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Joined: 17 Sep 2010
Posts: 4438
Location: Frankfurt, Germany
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mike155
Advocate
Joined: 17 Sep 2010
Posts: 4438
Location: Frankfurt, Germany
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| Posted: Mon Dec 28, 2020 1:22 pm Post subject: |
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@cmrd: please post the output of
I wonder whether it's somehow related to USE flags... |
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cmrd
n00b
Joined: 13 Jul 2014
Posts: 44
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| Posted: Tue Dec 29, 2020 6:14 pm Post subject: |
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Sure:
| Code: | $ emerge -pv firefox
...
[ebuild R ~] www-client/firefox-84.0.1-r1:0/84::gentoo USE="clang hardened openh264 pulseaudio (selinux) system-av1 system-harfbuzz system-icu system-jpeg system-libevent system-libvpx system-webp wayland -dbus -debug -eme-free -geckodriver (-gmp-autoupdate) -hwaccel -jack -lto -pgo -screencast -wifi" L10N="-ach -af -an -ar -ast -az -be -bg -bn -br -bs -ca -ca-valencia -cak -cs -cy -da -de -dsb -el -en-CA -en-GB -eo -es-AR -es-CL -es-ES -es-MX -et -eu -fa -ff -fi -fr -fy -ga -gd -gl -gn -gu -he -hi -hr -hsb -hu -hy -ia -id -is -it -ja -ka -kab -kk -km -kn -ko -lij -lt -lv -mk -mr -ms -my -nb -ne -nl -nn -oc -pa -pl -pt-BR -pt-PT -rm -ro -ru -si -sk -sl -son -sq -sr -sv -ta -te -th -tl -tr -trs -uk -ur -uz -vi -xh -zh-CN -zh-TW" 0 KiB
Total: 1 package (1 reinstall), Size of downloads: 0 KiB |
Having read the bug, it looks like it is the remote control feature failing due to -dbus.
Launching firefox with --no-remote works fine, with no segfault.
firefox-bin probably doesn't have this issue because it's built with +dbus. |
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mike155
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Joined: 17 Sep 2010
Posts: 4438
Location: Frankfurt, Germany
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| Posted: Tue Dec 29, 2020 9:22 pm Post subject: |
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| @cmrd: thanks! This confirms my suspicion. Firefox crashes if it was compiled WITH 'wayland' and WITHOUT 'dbus' and if it's called WITHOUT '--no-remote'. |
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