On Thu, Jul 08, 1999 at 10:17:54AM +0200, georg.funke@netcologne.de wrote:
> Hi,
>=20
> today i want to burn a CD but i get the following kernel oops with
> 2.2.10-ac8.
>=20
> [Absolutely useless info snipped!]
>=20
> I newer get a oops when i want to burn a CD.
> Unable to handle kernel NULL pointer dereference at virtual address 00000=
000
> current->tss.cr3 =3D 05bbc000, %cr3 =3D 05bbc000
> *pde =3D 00000000
> Oops: 0002
> CPU: 0
> EIP: 0010:[<c0120731>]
> EFLAGS: 00010292
> eax: 0000001b ebx: 5a5a5a5a ecx: 00000024 edx: 00000017
> esi: c0093340 edi: 5a5a5a5a ebp: c906a3a0 esp: c102de8c
> ds: 0018 es: 0018 ss: 0018
> Process rmmod (pid: 1312, process nr: 55, stackpage=3Dc102d000)
> Stack: 00000018 00000246 5a5a5a5a c0093340 c0093160 c906a3a0 c759d800 000=
00b00=20
> 00000000 00000246 c759d818 c00901c4 00072000 c017fb1f 5a5a5a5a c01=
1a69e=20
> c34fbb20 fffffffe 5a5a5a5a c0093340 c0093160 c906a3a0 c74e2300 c90=
66000=20
> Call Trace: [<c017fb1f>] [<c011a69e>] [<c018122a>] [<c0181319>] [<c0115e9=
c>] [<c0115e1f>] [<c010e274>]=20
> [<c01154a3>] [<c010910d>] [<c0108fd4>]=20
> Code: c7 05 00 00 00 00 00 00 00 00 83 c4 10 5b 5e 5f 5d 83 c4 1c=20
> Warning: trailing garbage ignored on Code: line
> Text: 'Code: c7 05 00 00 00 00 00 00 00 00 83 c4 10 5b 5e 5f 5d 83 c4 1=
c '
> >>EIP: c0120731 <kfree+2b1/2c8>
> Trace: c017fb1f <scsi_init_free+37/40>
> Trace: c011a69e <do_anonymous_page+6e/80>
> Trace: c018122a <scsi_unregister_device+66/b0>
> Trace: c0181319 <scsi_unregister_module+3d/44>
> Trace: c0115e9c <free_module+a0/ac>
> Trace: c0115e1f <free_module+23/ac>
> Trace: c010e274 <do_page_fault+108/334>
> Trace: c01154a3 <sys_delete_module+1bf/200>
> Code: c0120731 <kfree+2b1/2c8> 0000000000000000 <_EIP>: <=
=3D=3D=3D
> Code: c0120731 <kfree+2b1/2c8> 0: c7 05 00 00 00 00 00=
movl $0x0,0x0 <=3D=3D=3D
> Code: c0120738 <kfree+2b8/2c8> 7: 00 00 00=20
> Code: c012073b <kfree+2bb/2c8> a: 83 c4 10 =
addl $0x10,%esp
> Code: c012073e <kfree+2be/2c8> d: 5b =
popl %ebx
> Code: c012073f <kfree+2bf/2c8> e: 5e =
popl %esi
> Code: c0120740 <kfree+2c0/2c8> f: 5f =
popl %edi
> Code: c0120741 <kfree+2c1/2c8> 10: 5d =
popl %ebp
> Code: c0120742 <kfree+2c2/2c8> 11: 83 c4 1c =
addl $0x1c,%esp
This is a bug on removing devices in the scsi mid-layer. It's triggered by
ac8's slab poisioning. A patch has been sent to Alan and should cure this.
You may also find it on linux-scsi ...
Regards,
--=20
Kurt Garloff <garloff@suse.de> SuSE GmbH, N=FCrnberg, FRG
Linux kernel development; SCSI driver: DC390 (tmscsim/AM53C974)
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