backtrace of uml crash on mysql-server start
Hi,
finally I was able to produce this stracktrace with 2.4.26-um1 (host also 2.4.26)
It happend during a mysql-server start. (I can reproduce this quite constant, if you have further questions ...)
maybe something with ipc ?
Breakpoint 1, panic (fmt=0x0) at panic.c:58
58 machine_paniced = 1;
(gdb) bt
#0 panic (fmt=0x0) at panic.c:58
#1 0xa008e04b in segv (address=28, ip=1818324839, is_write=2, is_user=0,
sc=0x0) at trap_kern.c:144
#2 0xa008e3d7 in segv_handler (sig=11, regs=0xa13ec274) at trap_user.c:67 #3 0xa0090ea4 in sig_handler_common_skas (sig=11, sc_ptr=0x58)
at trap_user.c:35
#4 0xa008e408 in sig_handler (sig=0, sc=
{gs = 0, __gsh = 0, fs = 0, __fsh = 0, es = 43, __esh = 0, ds = 43, __dsh = 0, edi = 2, esi = 28, ebp = 2705260500, esp = 2705260428, ebx = 0, edx = 0, ecx = 2684354560, eax = 28, trapno = 14, err = 6, eip = 2684935257, cs = 35, __csh = 0, eflags = 66194, esp_at_signal = 2705260428, ss = 43, __ssh = 0, fpstate = 0x0, oldmask = 134217728, cr2 = 28}) at trap_user.c:101 #5 <signal handler called>
#6 0xa008dc59 in handle_page_fault (address=1881171332, ip=0, is_write=2,
is_user=0, code_out=0xa13f0024) at rwsem.h:101
#7 0xa008df56 in segv (address=1881171332, ip=0, is_write=2, is_user=0,
sc=0x1c) at trap_kern.c:133
#8 0xa008e3d7 in segv_handler (sig=11, regs=0xa13f0274) at trap_user.c:67
#9 0xa0090ea4 in sig_handler_common_skas (sig=11, sc_ptr=0x58)
at trap_user.c:35
#10 0xa008e408 in sig_handler (sig=28, sc=
{gs = 0, __gsh = 0, fs = 0, __fsh = 0, es = 43, __esh = 0, ds = 43, __dsh = 0, edi = 0, esi = 1881171332, ebp = 2705261644, esp = 2705261572, ebx = 188117---Type <return> to continue, or q <return> to quit---
/sebastian
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Alle 22:24, sabato 26 giugno 2004, Sebastian Böhm ha scritto:
Quoted 6 lines
Hi,
finally I was able to produce this stracktrace with 2.4.26-um1 (host also 2.4.26)
It happend during a mysql-server start. (I can reproduce this quite constant, if you have further questions ...)
Very well, a reproducible crash is very important.
Quoted 11 lines
maybe something with ipc ?
Breakpoint 1, panic (fmt=0x0) at panic.c:58
58machine_paniced= 1;
(gdb) bt#10
0xa008e408insig_handler(sig=28, sc={gs = 0, __gsh = 0, fs = 0, __fsh = 0, es = 43, __esh = 0, ds =43,
__dsh= 0, edi = 0, esi = 1881171332, ebp = 2705261644, esp = 2705261572, ebx = 188117
Eeeh?
Quoted 1 line
---Type <return> to continue, or q <return> to quit---
Aargh! Why did not you type <return> here? The backtrace still continues, and the part you posted is the least significant one (though there is already something strange - a panic onto a panic - but not yet enough). It's like a joke from the fate....
Just post the *complete* backtrace and I'll be able to start to analyze the bug.
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Paolo Giarrusso, aka Blaisorblade Linux registered user n. 292729 ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com _______________________________________________ User-mode-linux-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
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Alle 22:32, domenica 27 giugno 2004, Sebastian Böhm ha scritto:
Quoted 2 lines
BlaisorBlade wrote:
Can I exit gdb now ? Or is there something more ?
Well, maybe you can. There is a patch onto the ML (not from me), with this title:
[uml-devel] Patch for arch/um/kernel/trap_kern.c to fix bad panic
And I think it could fix exactly your problem. At least, retry with that applied; and say me whether things become safe or not. However, I'm not sure it does relate to that bug.
Quoted 1 line
I posted the complete output to user-mode-linux-devel, did you noticed that
?
I received all your mails, now, but I'm not always online so when I wrote that mail I hadn't it yet.
Bye
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Paolo Giarrusso, aka Blaisorblade Linux registered user n. 292729 ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com _______________________________________________ User-mode-linux-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel