[Bug 231296] smartpqi - kernel panics

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231296

--- Comment #10 from Andriy Gapon <avg at FreeBSD.org> ---
(In reply to rainer from comment #9)
The problem might be similar but it is certainly different.
In the other bug they are getting a panic (unfortunately the panic message is
not shown), while you are getting a fatal trap / page fault.

Also, in your case there is no ARC calls in the stack trace.  It's straight
from the ZIO code to the VM code.  So, it's quite possible that ARC contributes
to the problem (e.g., by creating a memory pressure or some such), but there is
a bug in kmem_back / kmem_malloc.

Finally, in comment #3 the stack trace recorded by ddb and the stack trace
shown by kgdb do not match.  I suspect that that is because you passed a wrong
kernel to kgdb or /usr/lib/debug/boot/kernel does not match /boot/kernel.

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