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Date: Wed, 16 Mar 2005 20:29:13 +0100
From: Philippe PEGON <Philippe.Pegon@crc.u-strasbg.fr>
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Subject: Re: Panic with amr and 5.4-PRERELEASE
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Philippe PEGON wrote:
> Hi,
> 
> I have a FreeBSD bi-processor box with amr device in FreeBSD
> 5.4-prerelease of this week.
> # uname -a
> FreeBSD sokaris2.u-strasbg.fr 5.4-PRERELEASE FreeBSD 5.4-PRERELEASE #3: 
> Thu Mar 10 15:33:01 CET 2005 
> root@crc.u-strasbg.fr:/usr/obj/usr/src/sys/SOKARIS2  i386
> 
> Starting a program which continuously polls the state of the raid array
> (amrstat, see source attached), and making a buildworld at the same time
> triggers a kernel panic. The problem is fairly easy to reproduce.
> 
> Features added in the SMP kernel : altq, KDB, DDB, GDB (see config file
> and dmesg output attached). The kernel is launched with ACPI disabled.
> 
> A stack trace of the kernel panic and the result of a remote gdb follow.
> 
> Thank you by advance for your help,
> 
> Philippe PEGON

For information, Scott Long has committed a patch for amr.c in current 
last sunday which solved this problem. And it's now MFCed in RELENG_5.

-- 
Philippe PEGON