Messages in this thread |  | | Date | Tue, 13 May 2003 21:24:10 -0700 | From | "Martin J. Bligh" <> | Subject | [Bug 715] New: panic at scsi_io_completion+0x171/0x480 (NULL pointer deref) |
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Summary: panic at scsi_io_completion+0x171/0x480 (NULL pointer deref) Kernel Version: 2.5.69 Status: NEW Severity: normal Owner: andmike@us.ibm.com Submitter: wescott_mike@emc.com
Distribution:RH-7.3 Hardware Environment: 4x P-200 (smp) 2 scsi bus aic7880: Ultra Wide cdrom is MATSHITA Model: CD-ROM CR-504 Rev: ST20 Software Environment: Problem Description: panic at panic at scsi_io_completion+0x171/0x480 (NULL pointer deref) with smp kernel and with smp kernel running nosmp
problem does not occur with 2.4.18
Steps to reproduce: run dd if=/dev/cdrom of=/dev/null bs=2k and while that's active eject /dev/cdrom
console output:
# eject /dev/cdrom Unable to handle kernel NULL pointer dereference at virtual address 00000000 printing eip: c0208181 *pde = 00000000 Oops: 0002 [#1] CPU: 0 EIP: 0060:[<c0208181>] Not tainted EFLAGS: 00010203 EIP is at scsi_io_completion+0x171/0x480 eax: 00000012 ebx: db71be20 ecx: 00000004 edx: dfcf1300 esi: db71bee0 edi: 00000000 ebp: db71be20 esp: c036be90 ds: 007b es: 007b ss: 0068 Process swapper (pid: 0, threadinfo=c036a000 task=c02ff0e0) Stack: 00000005 00000000 dfcf1300 dfd59c00 00000000 08000002 dfdb3e00 dfd2c038 00000007 00000005 dfd20020 00000005 00000000 0003ac41 00000001 dfe1445f dffa7260 00000082 dfd2c038 dfdb3e00 dfd2c038 c022480e db71be20 db71be20 Call Trace: [<c022480e>] ahc_done+0x43e/0x490 [<c022e4dd>] rw_intr+0x10d/0x120 [<c0203203>] scsi_finish_command+0xd3/0xe0 [<c0202fe9>] scsi_softirq+0xf9/0x210 [<c011fc7b>] do_softirq+0x6b/0xd0 [<c010b116>] do_IRQ+0xf6/0x110 [<c0106ee0>] default_idle+0x0/0x40 [<c0106ee0>] default_idle+0x0/0x40 [<c01098d0>] common_interrupt+0x18/0x20 [<c0106ee0>] default_idle+0x0/0x40 [<c0106ee0>] default_idle+0x0/0x40 [<c0106f0d>] default_idle+0x2d/0x40 [<c0106fb2>] cpu_idle+0x52/0x70 [<c0105000>] _stext+0x0/0x50 [<c036c7f6>] start_kernel+0x146/0x150
Code: f3 a5 a8 02 74 02 66 a5 a8 01 74 01 a4 89 42 7c eb 12 8b 7c <0>Kernel panic: Fatal exception in interrupt In interrupt handler - not syncing
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