SCSI target mode LOR
Scott Long
scottl at samsco.org
Sun Jan 22 08:59:23 PST 2006
Attila Nagy wrote:
> Hello,
>
> I'm doing some experiments with FreeBSD target mode support on Fibre
> Channel and thought that I should give CURRENT a try too.
>
> The machine itself is an HP BL25p with 8 GB of RAM (but hw.physmem set
> to under 4G, it seems the isp driver needs this) and dual Opterons.
> Running amd64 code.
>
> This is what I get after issuing
> scsi_target -A -S -T -W 32 2:0:0 /data/file1
>
> lock order reversal: (sleepable after non-sleepable)
> 1st 0xffffffff808ce680 targ global (targ global) @
> /usr/src/sys/cam/scsi/scsi_target.c:418
> 2nd 0xffffffff808e98c0 kernel environment (kernel environment) @
> /usr/src/sys/kern/subr_hints.c:117
> KDB: stack backtrace:
> witness_checkorder() at witness_checkorder+0x4f9
> _sx_slock() at _sx_slock+0x4d
> res_find() at res_find+0x41a
> resource_find() at resource_find+0x7e
> resource_find_dev() at resource_find_dev+0x5f
> cam_periph_alloc() at cam_periph_alloc+0x1df
> targioctl() at targioctl+0x3a7
> giant_ioctl() at giant_ioctl+0x65
> devfs_ioctl_f() at devfs_ioctl_f+0x6f
> ioctl() at ioctl+0x147
> syscall() at syscall+0x517
> Xfast_syscall() at Xfast_syscall+0xa8
> --- syscall (54, FreeBSD ELF64, ioctl), rip = 0x800909aac, rsp =
> 0x7fffffffbb98, rbp = 0x7fffffffe700 ---
>
> Thanks,
>
Hi,
Please file a PR on this and assign it to me. I'll be working in this
area soon.
Scott
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