Re: FW: Unable to handle kernel NULL pointer dereference

From: Andre Hedrick (andre@linux-ide.org)
Date: Wed Oct 11 2000 - 14:28:23 EST


Use a serial console trace to redirect the output to another thing to
recorded the barf.

Oct 11 12:20:07 sis620 kernel: hda: TF.0=0x00 TF.1=0x00 TF.2=0x01 TF.3=0x00 TF.4=0x00 TF.5=0x00 TF.6=0x00 TF.7=0xec size=540
Oct 11 12:20:07 sis620 kernel: hda: ide_ioctl_cmd HDIO_DRIVE_TASKFILE: ide_task_cmd WIN_IDENTIFY
Oct 11 12:20:07 sis620 kernel: ide-taskfile.c,ide_taskfile_ioctl,line=662
Oct 11 12:20:07 sis620 kernel: Unable to handle kernel paging request at virtual address 0001000c
Oct 11 12:20:07 sis620 kernel: printing eip:
Oct 11 12:20:07 sis620 kernel: c01bab1d
Oct 11 12:20:07 sis620 kernel: *pde = 00000000
Oct 11 12:20:07 sis620 kernel: Oops: 0000
Oct 11 12:20:07 sis620 kernel: CPU: 0
Oct 11 12:20:07 sis620 kernel: EIP: 0010:[<c01bab1d>]
Oct 11 12:20:07 sis620 kernel: EFLAGS: 00010282
Oct 11 12:20:07 sis620 kernel: eax: 00010000 ebx: c02e0264 ecx: c4596000 edx: c3d05800
Oct 11 12:20:07 sis620 kernel: esi: bffff7a8 edi: 0000021c ebp: 00000200 esp: c3c27e64
Oct 11 12:20:07 sis620 kernel: ds: 0018 es: 0018 ss: 0018
Oct 11 12:20:07 sis620 kernel: Process ide-task (pid: 538, stackpage=c3c27000)
Oct 11 12:20:07 sis620 kernel: Stack: c02e0180 0000031d c3d826a0 c3c27f84 c3c27e84 0000021c c3d05800 00000084
Oct 11 12:20:07 sis620 kernel: 00010000 ec000000 00000002 0000000a c0121fb9 c66458bc 00010000 ec000000
Oct 11 12:20:07 sis620 kernel: 00000084 00000001 00000002 00000000 00000200 c01be95b c02e0180 c3d826a0
Oct 11 12:20:07 sis620 kernel: Call Trace: [<ec000000>] [<c0121fb9>] [<ec000000>] [<c01be95b>] [<c011f2d0>] [<c0110d1b>] [<c0132e6c>]
Oct 11 12:20:07 sis620 kernel: [<c0139217>] [<c010ac37>]
Oct 11 12:20:07 sis620 kernel: Code: 8b 40 0c 83 f8 10 0f 87 e7 00 00 00 ff 24 85 5c e4 23 c0 8b

This is the kind of stuff that needs to be sent and a kysnoops if
possible.

Cheers,

Andre Hedrick
The Linux ATA/IDE guy

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