kern/135469: kernel crash on md operation in ufs_dirbad

[Fabien Thomas]

>Number:         135469
>Category:       kern
>Synopsis:       kernel crash on md operation in ufs_dirbad
>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:   Thu Jun 11 09:30:01 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Fabien Thomas
>Release:        FreeBSD 7.2
>Organization:
NETASQ
>Environment:
FreeBSD build_trunk.netasq.com 7.2-RELEASE FreeBSD 7.2-RELEASE #2: Wed May 27 01:59:27 CEST 2009     root at build_trunk.netasq.com:/usr/obj/usr/src/sys/GENERIC  i386
>Description:
While doing some operation on md device the following panic have fired:

panic: ufs_dirbad: /tmp/_fw: bad dir ino 2 at offset 0: mangled entry
cpuid = 1
Uptime: 15d2h49m47s
Physical memory: 1010 MB
Dumping 249 MB: 234 218 202 186 170 154 138 122 106 90 74 58 42 26 10

Reading symbols from /boot/kernel/geom_mirror.ko...Reading symbols from /boot/kernel/geom_mirror.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/geom_mirror.ko
Reading symbols from /boot/kernel/acpi.ko...Reading symbols from /boot/kernel/acpi.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/acpi.ko
#0  doadump () at pcpu.h:196
196	pcpu.h: No such file or directory.
	in pcpu.h
(kgdb) bt
#0  doadump () at pcpu.h:196
#1  0x407e3197 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418
#2  0x407e3469 in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:574
#3  0x40a05606 in ufs_dirbad (ip=0x0, offset=0, how=0x40ba0320 "mangled entry")
    at /usr/src/sys/ufs/ufs/ufs_lookup.c:624
#4  0x40a06667 in ufs_lookup (ap=0x66a30710) at /usr/src/sys/ufs/ufs/ufs_lookup.c:301
#5  0x40afa522 in VOP_CACHEDLOOKUP_APV (vop=0x40c6de40, a=0x66a30710) at vnode_if.c:153
#6  0x40852e6c in vfs_cache_lookup (ap=0x66a30794) at vnode_if.h:83
#7  0x40afc1f6 in VOP_LOOKUP_APV (vop=0x40c6e360, a=0x66a30794) at vnode_if.c:99
#8  0x40859811 in lookup (ndp=0x66a30858) at vnode_if.h:57
#9  0x4085a559 in namei (ndp=0x66a30858) at /usr/src/sys/kern/vfs_lookup.c:215
#10 0x40868adf in kern_statfs (td=0x484e7690, path=0x3fbfee0f <Address 0x3fbfee0f out of bounds>, 
    pathseg=UIO_USERSPACE, buf=0x66a30aa0) at /usr/src/sys/kern/vfs_syscalls.c:301
#11 0x40868ce5 in statfs (td=0x484e7690, uap=0x66a30cfc) at /usr/src/sys/kern/vfs_syscalls.c:283
#12 0x40ae6205 in syscall (frame=0x66a30d38) at /usr/src/sys/i386/i386/trap.c:1089
#13 0x40acafc0 in Xint0x80_syscall () at /usr/src/sys/i386/i386/exception.s:262
#14 0x00000033 in ?? ()

>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: