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Subject2.3.22 on i686: Kernel bug in schedule()
Date
From
i686, egcs-19991013, binutils-2.9.5.0.16

Booted 2.3.22 init=/bin/bash (2.3.22pre[12] hang on me in
loadkeys). showTasks shows many modprobes running (???). Running ps(1)
crashes for no /proc. Mount /proc, run ps(1) again and get:

Kernel bug at sched.c:573
invalid operand 000

After that, hard hang. Copied Oops by hand and run through ksymoops:

ksymoops 0.7c on i686 2.3.20. Options used
-v /usr/src/linux-2.3.22pre/vmlinux (specified)
-K (specified)
-L (specified)
-o /boot/module-info-2.3.20 (default)
-m /usr/src/linux-2.3.22pre/System.map (specified)

No modules in ksyms, skipping objects
CPU: 0
EIP: 0010:[<c0110d3e>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010282
eax: 0000001b ebx: 00000000 ecx: c01c78cc edx: c01c78cc
esi: ffffe000 edi: 00000246 ebp: c08d7e84 esp: c08d7e4c
ds: 0018 es: 0018 ss: 0018
stack: 0000023d 00000000 fffffe00 00000246 c08d7f58 c08d7ec4 20000010 31313736
c08d7e78 00000000 c08d6000 0000041e 00000000 00000000 c08d7eb8 c0118359
c08d6000 0000041e ffffffff c08d6000 c08d7eb8 01234567 c08d6000 00000000
Call trace: [<c0118359>] [<c01183d6>] [<c01098fc [<c011b9c4>] [<c014b435>] [<c01b04ab [<c014b4bd>]
[<c014c1f3>] [<c0109a0d [<c01098fc [<c011b7c0>] [<c01a0018>] [<c0107f92>]
Code: 0f 0b 83 c4 0c a1 74 6a 1c c0 85 c0 0f 85 30 03 00 c7 45

>>EIP; c0110d3e <schedule+2e/420> <=====
Trace; c0118359 <sys_wait4+399/400>
Trace; c01183d6 <sys_waitpid+16/20>
Trace; c014c1f3 <sys_socketcall+63/200>
Code; c0110d3e <schedule+2e/420>
00000000 <_EIP>:
Code; c0110d3e <schedule+2e/420> <=====
0: 0f 0b ud2a <=====
Code; c0110d40 <schedule+30/420>
2: 83 c4 0c add $0xc,%esp
Code; c0110d43 <schedule+33/420>
5: a1 74 6a 1c c0 mov 0xc01c6a74,%eax
Code; c0110d48 <schedule+38/420>
a: 85 c0 test %eax,%eax
Code; c0110d4a <schedule+3a/420>
c: 0f 85 30 03 00 c7 jne c7000342 <_EIP+0xc7000342> 87111080 Before first symbol
Code; c0110d50 <schedule+40/420>
12: 45 inc %ebp
--
Horst von Brand vonbrand@sleipnir.valparaiso.cl
Casilla 9G, Viña del Mar, Chile +56 32 672616





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