Date: Mon, 24 Sep 2007 08:53:57 GMT From: Nikolay Pavlov <qpadla@gmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/116600: tmpfs panic: mtx_lock() of spin mutex (null) @ /usr/src/sys/kern/vfs_mount.c:1046 Message-ID: <200709240853.l8O8rvqt056512@www.freebsd.org> Resent-Message-ID: <200709240900.l8O907Ko057710@freefall.freebsd.org>
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>Number: 116600
>Category: kern
>Synopsis: tmpfs panic: mtx_lock() of spin mutex (null) @ /usr/src/sys/kern/vfs_mount.c:1046
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Sep 24 09:00:06 GMT 2007
>Closed-Date:
>Last-Modified:
>Originator: Nikolay Pavlov
>Release: 7.0-CURRENT
>Organization:
>Environment:
7.0-CURRENT GENERIC i386
>Description:
panic: mtx_lock() of spin mutex (null) @ /usr/src/sys/kern/vfs_mount.c:1046
cpuid = 0
KDB: enter: panic
exclusive sleep mutex Giant r = 0 (0xc0ba7350) locked
@ /usr/src/sys/kern/kern_module.c:117
panic: from debugger
cpuid = 0
Uptime: 6s
Physical memory: 1003 MB
Dumping 47 MB: 32 16
#0 doadump () at pcpu.h:195
195 __asm __volatile("movl %%fs:0,%0" : "=r" (td));
(kgdb) bt
#0 doadump () at pcpu.h:195
#1 0xc074c19e in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409
#2 0xc074c45b in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:563
#3 0xc048c6d7 in db_panic (addr=Could not find the frame base
for "db_panic".
) at /usr/src/sys/ddb/db_command.c:433
#4 0xc048d0c5 in db_command_loop () at /usr/src/sys/ddb/db_command.c:401
#5 0xc048e835 in db_trap (type=3, code=0)
at /usr/src/sys/ddb/db_main.c:222
#6 0xc07730c6 in kdb_trap (type=3, code=0, tf=0xe46959f0)
at /usr/src/sys/kern/subr_kdb.c:502
#7 0xc09fd25b in trap (frame=0xe46959f0)
at /usr/src/sys/i386/i386/trap.c:621
#8 0xc09e2c8b in calltrap () at /usr/src/sys/i386/i386/exception.s:139
#9 0xc0773242 in kdb_enter (msg=0xc0a93513 "panic") at cpufunc.h:60
#10 0xc074c444 in panic (fmt=0xc0a92475 "mtx_lock() of spin mutex %s @ %s:
%d") at /usr/src/sys/kern/kern_shutdown.c:547
#11 0xc0740d3a in _mtx_lock_flags (m=0xc42b0000, opts=0,
file=0xc0a9e111 "/usr/src/sys/kern/vfs_mount.c", line=1046)
at /usr/src/sys/kern/kern_mutex.c:180
#12 0xc07c154b in vfs_donmount (td=0xc429f800, fsflags=0,
fsoptions=0xc431ce00) at /usr/src/sys/kern/vfs_mount.c:1046
#13 0xc07c25e3 in nmount (td=0xc429f800, uap=0xe4695cfc)
at /usr/src/sys/kern/vfs_mount.c:413
#14 0xc09fca13 in syscall (frame=0xe4695d38)
at /usr/src/sys/i386/i386/trap.c:1008
#15 0xc09e2cf0 in Xint0x80_syscall ()
at /usr/src/sys/i386/i386/exception.s:196
#16 0x00000033 in ?? ()
Previous frame inner to this frame (corrupt stack?)
>How-To-Repeat:
Add this to your fstab and reboot:
tmpfs /tmp tmpfs rw,mode=777 0 0
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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