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[Bug uprobes/15972] core dump with process probes
- From: "mjw at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sourceware dot org
- Date: Fri, 20 Sep 2013 10:39:00 +0000
- Subject: [Bug uprobes/15972] core dump with process probes
- Auto-submitted: auto-generated
- References: <bug-15972-6586 at http dot sourceware dot org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=15972
--- Comment #2 from Mark Wielaard <mjw at redhat dot com> ---
Attaching gdb at the same time shows:
Program received signal SIGSEGV, Segmentation fault.
g_main_context_iterate (context=0x7f7f123a7d80, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3649
3649 UNLOCK_CONTEXT (context);
(gdb) disassemble
Dump of assembler code for function g_main_context_iterate:
0x00007f7f1129ef90 <+0>: push %r15
0x00007f7f1129ef92 <+2>: push %r14
0x00007f7f1129ef94 <+4>: mov %esi,%r14d
0x00007f7f1129ef97 <+7>: push %r13
0x00007f7f1129ef99 <+9>: push %r12
0x00007f7f1129ef9b <+11>: push %rbp
0x00007f7f1129ef9c <+12>: push %rbx
0x00007f7f1129ef9d <+13>: mov %rdi,%rbx
0x00007f7f1129efa0 <+16>: sub $0x28,%rsp
0x00007f7f1129efa4 <+20>: mov %edx,0xc(%rsp)
=> 0x00007f7f1129efa8 <+24>: int3
0x00007f7f1129efa9 <+25>: retq
0x00007f7f1129efaa <+26>: repnz add (%rax),%eax
0x00007f7f1129efad <+29>: mov %rbx,%rdi
0x00007f7f1129efb0 <+32>: callq 0x7f7f1129e220 <g_main_context_acquire>
I am surprised gdb sees the int3. And that it gets a SIGSEGV here (not a
SIGTRAP).
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