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* wierd bug, help decoding sysrq output?
@ 2007-02-19 21:12 Chris Friesen
  0 siblings, 0 replies; only message in thread
From: Chris Friesen @ 2007-02-19 21:12 UTC (permalink / raw)
  To: linux-kernel

I'm looking for some help decoding an x86 stack trace.

We have a process showing as defunct, but its parent is listed as init. 
  It shows up in top as using basically 100% cpu, and one cpu out of 
four is showing spending all its time in "sys".

Dumping all tasks via sysrq gave the following information for the 
affected process:

oamFmLogServe X C8A5E610     0 23551      1         23553 20706 (L-TLB)
ee45fe58 00000046 c8a5ebf0 c8a5e610 00000a3c 00000000 00000003 c04cfb74
        f91a919f c01406ce c8a5ebf0 00000000 c8a5e610 c515c060 00000001 
        e132a861 00000a3c c8a5e610 c8a5ebf0 c8a5ed64 00005bff c8a5e610 
Call Trace:
  [<c011e742>] do_exit+0x31e/0x48a
  [<c011e95e>] do_group_exit+0x3a/0xa9
  [<c01277d1>] get_signal_to_deliver+0x21f/0x342
  [<c010238a>] do_signal+0x72/0x12f
  [<c0102482>] do_notify_resume+0x3b/0x3d
  [<c010265e>] work_notifysig+0x13/0x15

Disassembling vmlinux gives:

0xc011e73d <do_exit+793>:       call   0xc046194c <schedule>
0xc011e742 <do_exit+798>:       ud2a

I haven't been able to find any kernel code that would match up to a 
program counter of "C8A5E610".

Anyone have any ideas?


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