2.4.0test1-ac14: smp deadlock

From: Pete Toscano (sigsegv@psinet.com)
Date: Sun Jun 11 2000 - 17:45:16 EST


hello,

i was (am) using 2.4.0test1-ac13 to try to put an end to incessant
lockups that i've been seeing since 2.3.99-pre7 days (maybe earlier, i
don't quite recall). the problem is, ac13 has a bug in buffer.c that
"make -j bzlilo" tends to trigger, so i just upgraded to ac14.

upon booting ac14, everything looks good for a couple seconds, then the
following message appears on the screen, looping until i power-cycle:

del_timer_sync (c195bf4c): deadlock! Called from c0117868
See http://www.uow.edu.au/~andrewm/linux/deadlock.html

so, i checked out the mentioned page and followed the mentioned
procedure. since i only had one address listed, the following is kind
of sparce, but here it is:

(gdb) x/10i 0xc0117868
0xc0117868 <schedule_timeout+128>: mov 0xc028bd4c,%eax
0xc011786d <schedule_timeout+133>: mov %esi,%ebx
0xc011786f <schedule_timeout+135>: sub %eax,%ebx
0xc0117871 <schedule_timeout+137>: xor %eax,%eax
0xc0117873 <schedule_timeout+139>: cmp $0xffffffff,%ebx
0xc0117876 <schedule_timeout+142>: cmovg %ebx,%eax
0xc0117879 <schedule_timeout+145>: lea 0xffffffe0(%ebp),%esp
0xc011787c <schedule_timeout+148>: pop %ebx
0xc011787d <schedule_timeout+149>: pop %esi
0xc011787e <schedule_timeout+150>: mov %ebp,%esp

my machine is a dual p3-600 with 512m ram. asus p2b-d mobo.

if there's any futher info i cna provide, please let me know.

btw, i'm not subscribed to the linux-smp list, so please write me
directly.

thanks,
pete

-- 
Pete Toscano      p:sigsegv@psinet.com        w:ptoscano@netsol.com
GPG fingerprint: D8F5 A087 9A4C 56BB 8F78  B29C 1FF0 1BA7 9008 2736


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