I installed some more *-dbg and *-devel packages (including
libstdc++6-4.8-dbg), and now the backtrace is marginally more helpful -
although possibly this is a different trace?
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f95f3fff700 (LWP 10149)]
__memcpy_sse2_unaligned ()
at ../sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S:35
35 ../sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S: No such file or
directory.
(gdb) bt
#0 __memcpy_sse2_unaligned ()
at ../sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S:35
#1 0x0000558db62a78c3 in ?? ()
#2 0x0000558db62a8735 in ?? ()
#3 0x0000558db641a06b in ?? ()
#4 0x00007f9997cbc184 in start_thread (arg=0x7f95f3fff700)
at pthread_create.c:312
#5 0x00007f99979e937d in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
(gdb)
A second crash was the same as the first:
Program received signal SIGSEGV, Segmentation fault.
0x0000557d8732cd20 in ?? ()
(gdb) bt
#0 0x0000557d8732cd20 in ?? ()
#1 0x0000557d8732d96a in ?? ()
#2 0x0000557d8732ec92 in ?? ()
#3 0x0000557d87329828 in ?? ()
#4 0x0000557d872d9e77 in ?? ()
#5 0x0000557d87181bd6 in ?? ()
#6 0x00007f200b9ebf45 in __libc_start_main (main=0x557d87180640, argc=17,
argv=0x7ffca5a399c8, init=<optimised out>, fini=<optimised out>,
rtld_fini=<optimised out>, stack_end=0x7ffca5a399b8) at libc-start.c:287
#7 0x0000557d8718612c in ?? ()
(gdb)
BTW, there have also been single line logs in syslog each segfault time:
$ grep segfault /var/log/kern.log
Oct 3 10:48:20 brian kernel: [137022.004997] qemu-system-x86[13755]: segfault
at 558bdc2d2e08 ip 00007f694e12cd1c sp 00007ffcfa8660e8 error 4 in
libc-2.19.so[7f694e0aa000+1ba000]
Oct 3 18:05:30 brian kernel: [163253.679372] qemu-system-x86[11074]: segfault
at 565334c7cc10 ip 000056542a917d20 sp 00007ffd6a51b770 error 4 in
qemu-system-x86_64[56542a6ce000+4b1000]
Oct 4 06:04:35 brian kernel: [206401.615476] qemu-system-x86[5957]: segfault
at 559c8d38a350 ip 0000559d8a9c2d20 sp 00007fff4b441040 error 4 in
qemu-system-x86_64[559d8a779000+4b1000]
Oct 4 07:58:53 brian kernel: [213260.662734] qemu-system-x86[31953]: segfault
at 55da4168ffb0 ip 000055db3f369d20 sp 00007ffcaa921340 error 4 in
qemu-system-x86_64[55db3f120000+4b1000]
Oct 4 10:26:01 brian kernel: [222089.607756] qemu-system-x86[4686]: segfault
at 562f1e888360 ip 000056301b98cd20 sp 00007ffc2a185260 error 4 in
qemu-system-x86_64[56301b743000+4b1000]
Oct 4 11:48:09 brian kernel: [227017.723519] qemu-system-x86[24041]: segfault
at 5647ca92b250 ip 00005648c536ad20 sp 00007ffc2c0cd040 error 4 in
qemu-system-x86_64[5648c5121000+4b1000]
Oct 4 12:20:15 brian kernel: [228943.353808] qemu-system-x86[32644]: segfault
at 55772d989c00 ip 000055782a2a8d20 sp 00007ffc05ed8340 error 4 in
qemu-system-x86_64[55782a05f000+4b1000]
I'm aware that hardware errors can cause segfaults. I've not seen this
in anything other than qemu, but that is probably when the system is
being stressed the most.
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1630226
Title:
segfault in qemu-system-x86_64
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1630226/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
