Date: Mon, 8 Apr 2002 08:58:48 -0700 (PDT) From: David Wolfskill <david@catwhisker.org> To: joe@freebsd.org Cc: current@freebsd.org Subject: panic "sleeping without a mutex" in usb_task_thread Message-ID: <200204081558.g38FwmFg049414@bunrab.catwhisker.org>
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On my laptop (but not the build machine; the latter may not have any USB
devices) I get the following panic after builing, installing, & trying
to boot -CURRENT from today. (CVSup log below panic trace.)
an0: Ethernet address 00:40:96:32:19:a9
bpf: an0 attached
panic: sleeping without a mutex
Debugger("panic")
Stopped at Debugger+0x40: xorl %eax,%eax
db> trace
Debugger(c03d647c) at Debugger+0x40
panic(c03d6cac,c021ffec,c8e4e000,c8e4e100,c8e4e000) at panic+0x70
msleep(c0442d98,0,5c,c03c7784,0) at msleep+0x23
usb_task_thread(0,c8e6ad48,c8e4e100,c021ffec,0) at usb_task_thread+0x23
fork_exit(c021ffec,0,c8e6ad48) at fork_exit+0x8c
fork_trampoline() at fork_trampoline+0x37
db>show locks
db>show witness [scrolls off screen]
db>
[Above was hand-transcribed; I don't have a serial console on my laptop,
and I'm not running VMware.]
Recent CVSup history:
freebeast(4.5-S)[1] tail /var/log/cvsup-history.log
CVSup begin from cvsup14.freebsd.org at Thu Apr 4 03:47:06 PST 2002
CVSup ended from cvsup14.freebsd.org at Thu Apr 4 03:53:56 PST 2002
CVSup begin from cvsup14.freebsd.org at Fri Apr 5 03:47:02 PST 2002
CVSup ended from cvsup14.freebsd.org at Fri Apr 5 03:54:13 PST 2002
CVSup begin from cvsup14.freebsd.org at Sat Apr 6 03:47:02 PST 2002
CVSup ended from cvsup14.freebsd.org at Sat Apr 6 03:54:32 PST 2002
CVSup begin from cvsup14.freebsd.org at Sun Apr 7 03:47:03 PDT 2002
CVSup ended from cvsup14.freebsd.org at Sun Apr 7 03:53:32 PDT 2002
CVSup begin from cvsup14.freebsd.org at Mon Apr 8 03:47:02 PDT 2002
CVSup ended from cvsup14.freebsd.org at Mon Apr 8 03:53:43 PDT 2002
freebeast(4.5-S)[2]
I can leave it in this condition for a while, if it would be helpful to
poke around at all.
Cheers,
david
--
David H. Wolfskill david@catwhisker.org
Based on my experience as a computing professional, I consider the use of
Microsoft products as components of computing systems to be just as
advisable as using green wood to frame a house... and expect similar results.
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