Re: [Fwd: SMP/Zip/SCSI Lockups]

Ian Smith (ian@beaky.force9.co.uk)
Tue, 04 May 1999 22:47:59 +0100


Alan Cox wrote:
>
> Ok bfd is part of the binutils package. On Red Hat it is part of
>
> binutils-2.9*rpm
>
> so it ought to be around since you have a linker. What distribution are
> you using ?

Debian Slink (2.1), binutils is at 2.9.1.0.19a-2 in their money, but
bfd.h is not anywhere on my system according to find & locate.

Probably simplest to mail myself a copy from a RH machine at work
tomorrow.

> Ok my fault. For those that don't exactly match use the one before. The
> trace is the function calls - in most cases a function is called part way
> through another function so that the addres on the stack is
> symbol+someoffset

Ok, so my cover's blown, I'm not a kernel hacker [g]. Here's my latest
offer . . .

[<c01abce3>] c01abbe8 t ppa_completion
[<co1b0378>] c01b0248 t aic7xxx_reset_current_bus
[<c01ac2c5>] c01abf58 t ppa_engine
[<c010aa65>] c010aa10 T handle_IRQ_event
[<c01abeab>] c01abe80 t ppa_interrupt
[<c0112852>] c01127f8 T tqueue_bh
[<c0119b65>] c0119ae0 T do_bottom_half
[<c0106000>] c0106000 T get_options
[<c010abbd>] c010ab70 T do_IRQ
[<c0108c9c>] c0108c9c T ret_from_intr
[<c0106000>] c0106000 T get_options
[<c0107347>] c010730c T cpu_idle
[<c01075b7>] c0107594 T kernel_thread

Well, I couldn't find any direct connection between ppa_completion (in
ppa.c) and aic7xxx_reset_current_bus, so I guess I'll have to wait for
further instructions.

Oh, and I think I've just remembered the text of another error message
(benign AFAIK) which I see occasionally during Zip access, although I
really cannot pin it down to this particular problem:

end SCSI request: buffer list destroyed

or something similar. That might be a red herring, though.

Thanks again for assistance, the irony of backup lockups is getting
_less_ funny with the passage of time, strangely enough.

Regards,

-- 
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Ian Smith
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