[Bug gdb/10833] GDB crashes on debugging multithreaded program onARM SMP dual core system

["blue.dragan+sourceware at gmail dot com"<sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=10833

--- Comment #12 from ChrisD <blue.dragan+sourceware at gmail dot com> 2011-09-10 18:08:10 UTC ---
This is from another run (different addresses):

This is the first instruction (from bpstat_what: bp_shlib_event):
(gdb) x/i 0x40013d64
   0x40013d64:    bx    lr
This instruction is used to return from a function.

This is the instruction at which it hit a SIGILL:
Program received signal SIGILL, Illegal instruction.
infrun: stop_stepping
0x400087d4 in ?? () from /lib/ld-linux.so.3
(gdb) x/i 0x400087d4
=> 0x400087d4:    bl    0x4000d7f0

Here's the target of this jump:
(gdb) x/i 0x4000d7f0
   0x4000d7f0:    push    {r4, r5, r6, lr}

All this looks good.

Can you point me in the right direction about ptrace? I'm running kernel 2.6.36
(Android K36) and I can't upgrade it. If there is a bug in ptrace indeed, maybe
I can find out whether there was a bug filed for this and check whether it was
fixed in newer kernels, then apply that fix to my kernel.

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