amd64/135124: lor vfs_bio/ufs_dirhash

[John Baldwin]

On Sunday 31 May 2009 8:14:22 pm Randy Bush wrote:
> 
> >Number:         135124
> >Category:       amd64
> >Synopsis:       lor vfs_bio/ufs_dirhash
> >Confidential:   no
> >Severity:       non-critical
> >Priority:       medium
> >Responsible:    freebsd-amd64
> >State:          open
> >Quarter:        
> >Keywords:       
> >Date-Required:
> >Class:          sw-bug
> >Submitter-Id:   current-users
> >Arrival-Date:   Mon Jun 01 00:20:00 UTC 2009
> >Closed-Date:
> >Last-Modified:
> >Originator:     Randy Bush
> >Release:        8-CURRENT Sun May 31 22:52:41 UTC 2009
> >Organization:
> Internet Initiative Japan
> >Environment:
> FreeBSD work0.psg.com 8.0-CURRENT FreeBSD 8.0-CURRENT #3: Sun May 31 
22:52:41 UTC 2009     root at work0.psg.com:/usr/obj/usr/src/sys/WORK0  amd64
> >Description:
> lock order reversal:
>  1st 0xffffff8052aba050 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:2556
>  2nd 0xffffff0004f53000 dirhash (dirhash) 
@ /usr/src/sys/ufs/ufs/ufs_dirhash.c:275
> KDB: stack backtrace:
> db_trace_self_wrapper() at db_trace_self_wrapper+0x2a
> _witness_debugger() at _witness_debugger+0x2e
> witness_checkorder() at witness_checkorder+0x81e
> _sx_xlock() at _sx_xlock+0x55
> ufsdirhash_acquire() at ufsdirhash_acquire+0x33
> ufsdirhash_add() at ufsdirhash_add+0x19
> ufs_direnter() at ufs_direnter+0x88b
> ufs_makeinode() at ufs_makeinode+0x31c
> VOP_CREATE_APV() at VOP_CREATE_APV+0xb1
> vn_open_cred() at vn_open_cred+0x3fd
> kern_openat() at kern_openat+0x159
> syscall() at syscall+0x1dd
> Xfast_syscall() at Xfast_syscall+0xd0
> --- syscall (5, FreeBSD ELF64, open), rip = 0x800c0bfcc, rsp = 
0x7fffffffe6f8, rbp = 0x7fffffffe860 ---
> 
> i think this may be different than 261
> <http://sources.zabbadoz.net/freebsd/lor/261.html>

It is not, it is the same exact LOR.

-- 
John Baldwin