Messages in this thread | | | From | "Manfred Spraul" <> | Subject | oops after scsi reset (ncr53c8xx) | Date | Sun, 3 Jan 1999 16:56:20 +0100 |
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linux crashes on my machine (Pentium 100, 64Mb) if I load "ncr53c8xx" in "rc.sysinit".
1) The crash only occurs if I attach an old CD-Writer: the device doesn't understand the LUN's, and the driver forces an scsi reset. 2) the crash doesn't occur if I load the driver outside rc.sysinit 3) if I add "sleep 10" arround the "insmod", then the computer doesn't crash. As far as I understand the Oops, the oops is caused during the completion of the scsi reset.
The exact cause is: lp seems to be 0x88080000 in ncr53c8xx, function ncr_complete(), line 5747: if (lp && lp->held_ccb) { } I don't understand yet how& why ncr_complete() was called.
I'll try to find the problem, but I currently have 2 problems: 1) Is there a way to to switch to 50 lines during startup? As far as I can see, there is some output from the scsi driver that has scrolled out of the screen. Nothing is logged into /var/log/messages 2) Is there a description somewhere how to use gdb? I couln'd get it to disassemble the ncr53c8xx driver.
Please cc any answers/questions, I'm not on the mailing list. Manfred Spraul
---------- system configuration: 2.2.0-pre3 CONFIG_MODULES 1 CONFIG_SCSI 1 CONFIG_SCSI_NCR53C8xx_MODULE 1 .._DEFAULT_TAGS (4) .. _MAX_TAGS (32) .. _SYNC (10) .. _IOMAPPED 1 undef .._PROFILE undef .._SYMBIO_COMPAT
------ My hostadapter: 53c810a revision: 0x12 port address 0x7c00 I had to switch to Port mapped Io, memory mapped Io failed completely.
--------- <alt>-<SysRq> still works, and if I press <Alt><SysRq><p> sereval times, I get EIP=10:c0111080 or ..87, all other registers are constant. /boot/System.map: c0110fc8 T panic. ------------ rc.sysinit: [...] insmod ncr53c8xx insmod fat insmod vfat insmod hfs
# checking filesystems [...] echo "Mounting local filesystems" mount -a -t nonfs,proc ------------------- output on screen & ksymoops scsi: 1 host [further output from scsi & ncr]
Mounting local filesystems Unable to kandle kernel paging request at virtual address 88080084 -- ksymoops Options used: -V -o /usr/src/linux/modules -k /proc/ksyms -l /proc/modules -m /boot/System.map-2.2.0
current->tss.cr3=00101000, %cr3= 00101000 Oops: 0000 CPU: 0 EIP: 0010:[<c481034d>] EFLAGS: 00010086 eax: 00000000 ebx: c4ca0080 ecx: c3ca0ac0 edx: c3ca0ac0 esi: c3ca0080 edi: c000ca00 ebp: 88080000 esp: c01d7eb0 ds: 0018 es: 0018 ss: 0018 c3ca0ac0 c4810400 c4811a49 c3ca0080 c3ca0080 00000046 0000000b c01d7f68 c005860 0000000e c01fd100 c009d202 c4813df6 c3ca0080 c090780 23000001 0000000b Call Trace: [<c0169082>] [<c4811bf1>] [<c4810400>] [<c4811a49>] [<c4814df6>] [<c010899d>] [<c0108ab7>] [<c0108b9f>] [<c0107acb>] [<c010626d>] [<c0106000>] [<c0106290>] [<c0107a20>] [<c0106000>] [<c0100176>] code: 8b 85 84 00 00 00 85 c0 74 38 39 44 24 24 75 32 8d 5d 40 8d
>>EIP: c481034d <ncr_complete+bd/530> Trace: c0169082 <ide_end_request+5e/68> Trace: c4811bf1 <ncr_int_sto+55/74> Trace: c4810400 <ncr_complete+170/530> Trace: c4811a49 <ncr_exception+235/388> Trace: c4814df6 <ncr53c8xx_intr+26/74> Trace: c010899d <handle_IRQ_event+31/68> Trace: c0108ab7 <do_8259A_IRQ+77/a0> Trace: c0108b9f <do_IRQ+23/40> Trace: c0107acb <ret_from_intr+f/20> Trace: c010626d <cpu_idle+5d/6c> Trace: c0106000 <get_options+0/74> Trace: c0106290 <sys_idle+14/24> Trace: c0107a20 <system_call+34/38> Trace: c0106000 <get_options+0/74> Trace: c0100176 <L6+0/2> Code: c481034d <ncr_complete+bd/530> 00000000 <_EIP>: Code: c481034d <ncr_complete+bd/530> 0: 8b 85 84 00 00 movl 0x84(%ebp),%eax Code: c4810352 <ncr_complete+c2/530> 5: 00 Code: c4810353 <ncr_complete+c3/530> 6: 85 c0 testl %eax,%eax Code: c4810355 <ncr_complete+c5/530> 8: 74 38 je 42 <_EIP+0x42> c481038f <ncr_complete+ff/530> Code: c4810357 <ncr_complete+c7/530> a: 39 44 24 24 cmpl %eax,0x24(%esp,1) Code: c481035b <ncr_complete+cb/530> e: 75 32 jne 42 <_EIP+0x42> c481038f <ncr_complete+ff/530> Code: c481035d <ncr_complete+cd/530> 10: 8d 5d 40 leal 0x40(%ebp),%ebx Code: c4810360 <ncr_complete+d0/530> 13: 8d 00 leal (%eax),%eax
Aiee, killing interrupt handler
Aiee, killing interrupt handler Kernel panic: Attempted to kill the idle task! in swapper task - not syncing
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