lkml.org 
[lkml]   [2001]   [Jan]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subject[BUG] Panic in smp_call_function_interrupt
Hello,

When I discovered the nice "smp affinity" feature, I gave it a try on our
old SMP testbed (quad P100 with 2 Adaptec AIC-7870 SCSI adapters). And by
chance, I discovered that the following command causes an oops (after a
couple of seconds), even without any kind of smp affinity :

[root@picasso /]# dd if=/dev/sda of=/dev/null

Fortunately I had kdb and the console on a serial line :

<some random characters>
Entering kdb (current=0xc116e000, pid 0) on processor 3 Panic: Oops
due to panic @ 0x0
eax = 0xc1145e64 ebx = 0xc012a0ff ecx = 0x00000000 edx = 0x00000000
esi = 0xc116e000 edi = 0xc116e000 esp = 0xc116ff5c eip = 0x00000000
ebp = 0xc116ff68 xss = 0x00000018 xcs = 0x00000010 eflags = 0x00010002
xds = 0x00000018 xes = 0x00000018 origeax = 0xffffffff &regs = 0xc116ff28
[3]kdb> bt
EBP EIP Function(args)
0xc116ff68 0x00000000 <unknown> (0x0)
kernel <unknown> 0x0 0x0 0x0
0xc0110545 smp_call_function_interrupt+0x25 (0xc01071d0, 0x0,
0xc116e000, 0xc116e000, 0xc116e000)
kernel .text 0xc0100000 0xc0110520
0xc0110560
0xc116ffa4 0xc01fa92d call_call_function_interrupt+0x5
kernel .rodata 0xc01f7ae0 0xc01fa928
0xc01fa940
0xc0107265 cpu_idle+0x35
kernel .text 0xc0100000 0xc0107230
0xc0107278

This is a 2.4.0 (release) with kdb 1.7 for 2.4.0. I tried the same on a
similar machine with 2 CPUs and without kdb, it gave the same result. A
2.4.0 without SMP support on these machines has no problem.

Can anyone reproduce this ? Or maybe it has already been fixed ?


Regards,

--
Jean-Marc Saffroy - Research Engineer - Silicomp Research Institute
mailto:saffroy@ri.silicomp.fr

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:14    [W:0.035 / U:0.464 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site