Tejun,
This Oops (2.6.23.13) looks very much like the same bug
you fixed recently for me in 2.6.24.
The bug was with sata_qstor and other drivers, in that
devres/libata were freeing the I/O resources before invoking
the LLD's host/port_stop routines .. which still need the I/O.
Did that patch get backported to 2.6.23 yet ?
Cheers
Tomasz Chmielewski wrote:
This is what happened when I tried to remove sata_mv module:
ACPI: PCI interrupt for device 0000:01:00.0 disabled
BUG: unable to handle kernel paging request at virtual address e0122028
printing eip:
e0015599
*pde = 1f557067
*pte = 00000000
Oops: 0000 [#1]
Modules linked in: cpufreq_ondemand p4_clockmod speedstep_lib iscsi_scst
crc32c libcrc32c scst_vdisk scst bonding dm_mirror dm_snapshot sata_mv
CPU: 0
EIP: 0060:[<e0015599>] Not tainted VLI
EFLAGS: 00010046 (2.6.23.14-N5200-3 #8)
EIP is at __mv_stop_dma+0x53/0xc2 [sata_mv]
eax: e0120000 ebx: 00000282 ecx: df629a0c edx: df629a4c
esi: df494000 edi: e0122000 ebp: df44d048 esp: ddd07eb8
ds: 007b es: 007b fs: 0000 gs: 0033 ss: 0068
Process rmmod (pid: 2305, ti=ddd06000 task=df25aa80 task.ti=ddd06000)
Stack: df44d0ec 00000000 c01d14bc 00000001 00000282 df5aa4ec df44d14c
e0015611
00000000 c0219884 df5aa4e0 ddd07f00 df44d14c 00000000 c01f525f
df44d14c
df44d048 0000001d df5aa4e0 df7e5a00 00000292 e0018af0 c0347760
ddd06000
Call Trace:
[<c01d14bc>] acpi_pci_free_irq+0x0/0x12
[<e0015611>] mv_stop_dma+0x9/0xd [sata_mv]
[<c0219884>] ata_host_release+0x2f/0x87
[<c01f525f>] release_nodes+0x102/0x122
[<c01f5387>] devres_release_all+0x1b/0x1e
[<c01f3422>] __device_release_driver+0x75/0x8b
[<c01f37f3>] driver_detach+0x59/0x96
[<c01f300d>] bus_remove_driver+0x57/0x75
[<c01b250a>] pci_unregister_driver+0xc/0x45
[<c012da39>] sys_delete_module+0x16f/0x196
[<c013ceaa>] remove_vma+0x31/0x36
[<c0103bd6>] syscall_call+0x7/0xb
=======================
Code: 00 02 00 8b 96 70 20 00 00 8d b8 00 20 00 00 f6 42 20 01 74 16 c7
80 28 20 00 00 02 00 00 00 8b 80 28 20 00 00 83 62 20 fe eb 33 <8b> 80
28 20 00 00
EIP: [<e0015599>] __mv_stop_dma+0x53/0xc2 [sata_mv] SS:ESP 0068:ddd07eb8
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