Problem on linux 2.2.13 - filesystem corruption?

From: Ragnar Kjørstad (kernel@ragnark.vestdata.no)
Date: Wed Feb 02 2000 - 22:05:13 EST

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I tried to start "date" from bash, and it generated the following
kernel-problem:

Feb 3 03:43:41 v053b kernel: Unable to handle kernel paging request at virtual address 49a7e5f4
Feb 3 03:43:41 v053b kernel: current->tss.cr3 = 04a04000, %cr3 = 04a04000
Feb 3 03:43:41 v053b kernel: *pde = 00000000
Feb 3 03:43:41 v053b kernel: Oops: 0000
Feb 3 03:43:41 v053b kernel: CPU: 0
Feb 3 03:43:41 v053b kernel: EIP: 0010:[do_generic_file_read+355/1508]
Feb 3 03:43:41 v053b kernel: EFLAGS: 00010202
Feb 3 03:43:41 v053b kernel: eax: 00001b04 ebx: 00000000 ecx: c025e484 edx: 49a7e5ec
Feb 3 03:43:41 v053b kernel: esi: c7c2eff0 edi: 00000000 ebp: 00000000 esp: c4a1bd28
Feb 3 03:43:41 v053b kernel: ds: 0018 es: 0018 ss: 0018
Feb 3 03:43:41 v053b kernel: Process bash (pid: 9659, process nr: 36, stackpage=c4a1b000)
Feb 3 03:43:41 v053b kernel: Stack: 00000000 c4a1bdb0 c025e484 00000000 00000000 00000006 08053ff8 08052bc5
Feb 3 03:43:41 v053b kernel: 08048000 00000001 00000000 c7c2eff0 c011bc97 c4a1bdb0 c4a1bdc4 c4a1bd78
Feb 3 03:43:41 v053b kernel: c011bbe4 c4a1a000 c0000000 fffffff8 00000000 00000080 c4a1be68 00000000
Feb 3 03:43:41 v053b kernel: Call Trace: [generic_file_read+99/124] [file_read_actor+0/80] [read_exec+194/316] [prepare_binprm+722/736] [do_execve+270/480] [sys_execve+47/88] [system_call+52/56]
Feb 3 03:43:41 v053b kernel: Code: 39 72 08 75 f0 39 5a 0c 75 eb ff 42 14 b8 02 00 00 00 0f ab

The system is linux 2.2.13 on (single) AMD K6. Kernel is standard except
reiserfs is compiled in (but no reiserfs filesystems are mounted).

The filesystem is on a WDC AC36400L IDE disk.

an strace of "cat /bin/date" shows that open and fstat returns
successfully, but the read triggers a new kernel problem.

I don't know how to investigate the problem - but I'll happily provide
any relevant information and run additional tests.

-- Ragnar Kjørstad

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