Date: Wed, 30 Apr 2008 12:02:50 GMT From: Martin Sugioarto <nakal@web.de> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/123256: panic: blockable sleep lock with wpi(4) Message-ID: <200804301202.m3UC2oMV049563@www.freebsd.org> Resent-Message-ID: <200804301210.m3UCA3IP028897@freefall.freebsd.org>
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>Number: 123256
>Category: kern
>Synopsis: panic: blockable sleep lock with wpi(4)
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Apr 30 12:10:03 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator: Martin Sugioarto
>Release: FreeBSD 7.0-STABLE
>Organization:
>Environment:
FreeBSD link.local 7.0-STABLE FreeBSD 7.0-STABLE #0: Thu Apr 24 23:21:01 CEST 2008 root@link.local:/usr/obj/usr/src/sys/LINK i386
>Description:
While trying to scan for wireless networks (ifconfig wpi scan), a kernel panic occured.
Here the dump:
#0 doadump () at pcpu.h:195
#1 0xc04af2fb in db_fncall (dummy1=-988161792, dummy2=0, dummy3=0,
dummy4=0xe6b34828 "\220�4�\200\225��HH��\203�V�\200\004��\r")
at /usr/src/sys/ddb/db_command.c:514
#2 0xc04af85c in db_command (last_cmdp=0xc0ad1054, cmd_table=0x0, dopager=1)
at /usr/src/sys/ddb/db_command.c:411
#3 0xc04af95d in db_command_loop () at /usr/src/sys/ddb/db_command.c:464
#4 0xc04b101f in db_trap (type=3, code=0) at /usr/src/sys/ddb/db_main.c:228
#5 0xc06f54ae in kdb_trap (type=3, code=0, tf=0xe6b349cc)
at /usr/src/sys/kern/subr_kdb.c:524
#6 0xc097219b in trap (frame=0xe6b349cc) at /usr/src/sys/i386/i386/trap.c:648
#7 0xc095948b in calltrap () at /usr/src/sys/i386/i386/exception.s:139
#8 0xc06f560f in kdb_enter_why (why=0xc09f2a37 "panic",
msg=0xc09f2a37 "panic") at cpufunc.h:60
#9 0xc06cbb3b in panic (fmt=0xc09f7c6f "blockable sleep lock (%s) %s @ %s:%d")
at /usr/src/sys/kern/kern_shutdown.c:556
#10 0xc0705aa7 in witness_checkorder (lock=0xc0aef6b0, flags=Variable "flags" is not available.
)
at /usr/src/sys/kern/subr_witness.c:876
#11 0xc06beeff in _mtx_lock_flags (m=0xc0aef6b0, opts=0,
file=0xc0a2152b "/usr/src/sys/i386/i386/trap.c", line=656)
at /usr/src/sys/kern/kern_mutex.c:183
#12 0xc09721cc in trap (frame=0xe6b34b4c) at /usr/src/sys/i386/i386/trap.c:656
#13 0xc095948b in calltrap () at /usr/src/sys/i386/i386/exception.s:139
#14 0xc096fbaf in cpu_switch () at /usr/src/sys/i386/i386/swtch.s:189
Previous frame inner to this frame (corrupt stack?)
>How-To-Repeat:
On Lenovo Thinkpad T60p:
1) Switch on wireless LAN.
2) kldload wpifw
3) kldload if_wpi
4) ifconfig wpi0 up
5) ifconfig wpi0 scan
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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