Date: Sun, 22 Mar 1998 18:07:54 -0800 (PST) From: dima@best.net To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: kern/6102: panic: biodone: buffer not busy Message-ID: <199803230207.SAA18979@burka.rdy.com>
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>Number: 6102
>Category: kern
>Synopsis: panic: biodone: buffer not busy
>Confidential: no
>Severity: critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Mar 22 18:10:01 PST 1998
>Last-Modified:
>Originator: Dima Ruban
>Organization:
Best Internet Communiactions, Inc.
>Release: FreeBSD 2.2.6-BETA i386
>Environment:
FreeBSD tick.best.net 2.2.6-BETA FreeBSD 2.2.6-BETA #32: Tue Mar 17
13:08:39 PST 1998 dima@tick.best.net:/src/src/sys/compile/BEST i386
>Description:
Once in a while kernel panics with following messages:
biodone: buffer already done
biodone: buffer already done
panic: biodone: buffer not busy
>How-To-Repeat:
I don't know, how to repeat this problem.
Here's trace from kdb:
biodone: buffer already done
biodone: buffer already done
panic: biodone: buffer not busy
Debugger("panic")
Stopped at _Debugger+0x35 [/sys/compile/BEST/:52]: movb
$0,_in_Debugger.
1
22
db>
db> trace
_Debugger(msg=f0113238) at _Debugger+0x35 [/sys/compile/BEST/:52]
_panic(fmt=f012e8a9) at _panic+0x5a [/sys/compile/BEST/:388]
_biodone(bp=f45ce3e8) at _biodone+0x30
[/usr/src/sys/compile/BEST/:1561]
_scsi_done(xs=f2629f00) at _scsi_done+0x84 [/sys/compile/BEST/:450]
_ahc_intr(arg=f24c4800) at _ahc_intr+0x1c7 [/sys/compile/BEST/:815]
Xresume10() at Xresume10+0x2b
--- interrupt, eip = 0xf01be075, esp = 0xf01dcff8, ebp = 0 ---
idle_loop() at idle_loop+0x3d
db>
We couldn't get a memory dump from it though:
db> panic
panic: from debugger
dumping to dev 401, offset 524288
dump ahc0: WARNING no command for scb 3 (cmdcmplt)
QOUTCNT == 5
biodone: buffer already done
panic: biodone: buffer not busy
dumping to dev 401, offset 524288
dump device not ready
Automatic reboot in 15 seconds - press a key on the console to abort
Rebooting...
>Fix:
Unknown (yet).
>Audit-Trail:
>Unformatted:
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