kern/89926: if_iwi : sleeping thread owns a non-sleepable lock
Evgeny Zislis
kesor at kesor.net
Sun Dec 4 10:30:17 GMT 2005
>Number: 89926
>Category: kern
>Synopsis: if_iwi : sleeping thread owns a non-sleepable lock
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Dec 04 10:30:04 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator: Evgeny Zislis
>Release: FreeBSD 6.0-STABLE i386
>Organization:
None
>Environment:
System: FreeBSD thinky5e.kesor.net 6.0-STABLE FreeBSD 6.0-STABLE #: Sun Dec 4 05:09:00 IST 2005 root at thinky5e.kesor.net:/usr/obj/usr/src/sys/THINKY5E.debug i386
Lenovo ThinkPad R50e with Intel 2200BG wifi card
>Description:
For unknown apparent reasons, expecially when running X and Gnome,
the kernel panics. (attached backtrace that leads to if_iwi)
>How-To-Repeat:
While using kismet with the iwi driver, and X, the system will crash
with no apparent reason.
>Fix:
Kernel backtrace :
(kgdb) backtrace
#0 doadump () at pcpu.h:165
During symbol reading, Incomplete CFI data; unspecified registers at 0xc05ae853.
#1 0xc05aede2 in boot (howto=0x104) at /usr/src/sys/kern/kern_shutdown.c:399
#2 0xc05af158 in panic (fmt=0xc07cae7e "sleeping thread (tid %d) owns a non-sleepable lock") at /usr/src/sys/kern/kern_shutdown.c:555
#3 0xc05d786f in propagate_priority (td=0xc3873000) at /usr/src/sys/kern/subr_turnstile.c:189
#4 0xc05d8612 in turnstile_wait (lock=0xc3a42b6c, owner=0xc3873000) at /usr/src/sys/kern/subr_turnstile.c:628
#5 0xc05a40e7 in _mtx_lock_sleep (m=0xc3a42b6c, tid=0xc3229300, opts=0x0, file=0x0, line=0x0) at /usr/src/sys/kern/kern_mutex.c:555
#6 0xc05a3c9b in _mtx_lock_flags (m=0x0, opts=0x0, file=0xc3d8a29f "/usr/src/sys/modules/iwi/../../dev/iwi/if_iwi.c", line=0x578) at /usr/src/sys/kern/kern_mutex.c:276
#7 0xc3d890e1 in iwi_ioctl (ifp=0xc3a42000, cmd=0xc361bb80, data=0x217 <Address 0x217 out of bounds>) at /usr/src/sys/modules/iwi/../../dev/iwi/if_iwi.c:2115
#8 0xc0594666 in ithread_loop (arg=0xc3221700) at /usr/src/sys/kern/kern_intr.c:547
#9 0xc0593224 in fork_exit (callout=0xc05943f0 <ithread_loop>, arg=0x0, frame=0x0) at /usr/src/sys/kern/kern_fork.c:789
#10 0xc07610dc in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:208
>Release-Note:
>Audit-Trail:
>Unformatted:
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