Neil,
The following oops was captured while setting up all-RAID1 (all
filesystems on RAID1) and run through ksymoops. The kernel oopses
when shutdown is attempted with RAID1 devices running in degraded
mode and invalidate() is complaining about busy buffers. The
symptom is reproducible.
Is it something that 2.4.18 fixes (only RAID-related fix in 2.4.18
was from Ingo, "fix rare data-loss case") or a separate problem?
Peter
ksymoops 2.4.3 on i686 2.4.17. Options used
-V (default)
-K (specified)
-L (specified)
-o /lib/modules/2.4.17/ (default)
-m /boot/System.map-2.4.17 (default)
No modules in ksyms, skipping objects
Unable to handle kernel NULL pointer dereference at virtual address 000000d4
c01bb2f1
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c01bb2f1>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010297
eax: 0000004b ebx: cbfea000 ecx: 000000d0 edx: 00000001
esi: cbfd7da0 edi: cbfbf000 ebp: cbfebfac esp: cbfebf94
ds: 0018 es: 0018 ss: 0018
Process mdrecoveryd (pid: 8, stackpage=cbfeb000)
Stack: cbfea000 cbfea000 c13d2160 fffffc18 000000d0 c025a000 00000001 c01ba19c
00000000 00000100 c1313ef8 c13d2160 0006e000 cbfebfe0 c13d2168 00000000
cbfea000 00000000 00000000 00000000 cbfea000 c13d216c c13d216c c0105594
Call Trace: [<c01ba19c>] [<c0105594>]
Code: 81 79 04 10 3f 25 c0 0f 85 f3 fd ff ff 68 20 4d 23 c0 e8 38
>>EIP; c01bb2f0 <md_do_recovery+234/25c> <=====
Trace; c01ba19c <md_thread+14c/1b0>
Trace; c0105594 <kernel_thread+28/38>
Code; c01bb2f0 <md_do_recovery+234/25c>
00000000 <_EIP>:
Code; c01bb2f0 <md_do_recovery+234/25c> <=====
0: 81 79 04 10 3f 25 c0 cmpl $0xc0253f10,0x4(%ecx) <=====
Code; c01bb2f6 <md_do_recovery+23a/25c>
7: 0f 85 f3 fd ff ff jne fffffe00 <_EIP+0xfffffe00> c01bb0f0 <md_do_recovery+34/25c>
Code; c01bb2fc <md_do_recovery+240/25c>
d: 68 20 4d 23 c0 push $0xc0234d20
Code; c01bb302 <md_do_recovery+246/25c>
12: e8 38 00 00 00 call 4f <_EIP+0x4f> c01bb33e <md_notify_reboot+26/68>
--
.+'''+. .+'''+. .+'''+. .+'''+. .+''
Kelemen Péter / \ / \ / fuji@elte.hu
.+' `+...+' `+...+' `+...+' `+...+'
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