Re: LOR 9.0 beta1

2011-08-28 Thread Doug Barton 
On 8/23/2011 7:48 AM, Garrett Cooper wrote:
> On Tue, Aug 23, 2011 at 4:29 AM, Holger Kipp  wrote:
>> Maybe already seen...
>> This is within Parallels 6.0 VM on a Mac with OS 10.6.8
> 
> ...
> 
> This is a well known LOR.

There are a lot of well-known LORs in HEAD. This is a bug. They make
witness basically useless, and cause users to waste a bunch of time
reporting things that are already "well known."

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Re: LOR 9.0 beta1

2011-08-23 Thread Garrett Cooper 
On Tue, Aug 23, 2011 at 4:29 AM, Holger Kipp  wrote:
> Maybe already seen...
> This is within Parallels 6.0 VM on a Mac with OS 10.6.8

...

This is a well known LOR.
Thanks,
-Garrett
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LOR 9.0 beta1

2011-08-23 Thread Holger Kipp 
Maybe already seen...
This is within Parallels 6.0 VM on a Mac with OS 10.6.8

Aug 23 09:11:54 tramp kernel: lock order reversal:
Aug 23 09:11:54 tramp kernel: 1st 0xff803d3d08b8 bufwait (bufwait) @ 
/usr/src/sys/kern/vfs_bio.c:2658
Aug 23 09:11:54 tramp kernel: 2nd 0xfe0002b6c800 dirhash (dirhash) @ 
/usr/src/sys/ufs/ufs/ufs_dirhash.c:284
Aug 23 09:11:54 tramp kernel: KDB: stack backtrace:
Aug 23 09:11:54 tramp kernel: db_trace_self_wrapper() at 
db_trace_self_wrapper+0x2a
Aug 23 09:11:54 tramp kernel: kdb_backtrace() at kdb_backtrace+0x37
Aug 23 09:11:54 tramp kernel: _witness_debugger() at _witness_debugger+0x2e
Aug 23 09:11:54 tramp kernel: witness_checkorder() at witness_checkorder+0x807
Aug 23 09:11:54 tramp kernel: _sx_xlock() at _sx_xlock+0x55
Aug 23 09:11:54 tramp kernel: ufsdirhash_acquire() at ufsdirhash_acquire+0x33
Aug 23 09:11:54 tramp kernel: ufsdirhash_add() at ufsdirhash_add+0x19
Aug 23 09:11:54 tramp kernel: ufs_direnter() at ufs_direnter+0x8c9
Aug 23 09:11:54 tramp kernel: ufs_makeinode() at ufs_makeinode+0x25b
Aug 23 09:11:54 tramp kernel: VOP_CREATE_APV() at VOP_CREATE_APV+0x8d
Aug 23 09:11:54 tramp kernel: vn_open_cred() at vn_open_cred+0x46a
Aug 23 09:11:54 tramp kernel: kern_openat() at kern_openat+0x17f
Aug 23 09:11:54 tramp kernel: syscallenter() at syscallenter+0x1aa
Aug 23 09:11:54 tramp kernel: syscall() at syscall+0x4c
Aug 23 09:11:54 tramp kernel: Xfast_syscall() at Xfast_syscall+0xdd
Aug 23 09:11:54 tramp kernel: --- syscall (5, FreeBSD ELF64, open), rip = 
0x801348e2c, rsp = 0x7fffd658, rbp = 0x8 ---
Aug 23 09:18:44 tramp kernel: lock order reversal:
Aug 23 09:18:44 tramp kernel: 1st 0xfe0015459278 ufs (ufs) @ 
/usr/src/sys/kern/vfs_lookup.c:501
Aug 23 09:18:44 tramp kernel: 2nd 0xff803d4889b8 bufwait (bufwait) @ 
/usr/src/sys/ufs/ffs/ffs_vnops.c:261
Aug 23 09:18:44 tramp kernel: 3rd 0xfe00154b5db8 ufs (ufs) @ 
/usr/src/sys/kern/vfs_subr.c:2134
Aug 23 09:18:44 tramp kernel: KDB: stack backtrace:
Aug 23 09:18:44 tramp kernel: db_trace_self_wrapper() at 
db_trace_self_wrapper+0x2a
Aug 23 09:18:44 tramp kernel: kdb_backtrace() at kdb_backtrace+0x37
Aug 23 09:18:44 tramp kernel: _witness_debugger() at _witness_debugger+0x2e
Aug 23 09:18:44 tramp kernel: witness_checkorder() at witness_checkorder+0x807
Aug 23 09:18:44 tramp kernel: __lockmgr_args() at __lockmgr_args+0xd42
Aug 23 09:18:44 tramp kernel: ffs_lock() at ffs_lock+0x8c
Aug 23 09:18:44 tramp kernel: VOP_LOCK1_APV() at VOP_LOCK1_APV+0x9b
Aug 23 09:18:44 tramp kernel: _vn_lock() at _vn_lock+0x47
Aug 23 09:18:44 tramp kernel: vget() at vget+0x7b
Aug 23 09:18:44 tramp kernel: vfs_hash_get() at vfs_hash_get+0xd5
Aug 23 09:18:44 tramp kernel: ffs_vgetf() at ffs_vgetf+0x48
Aug 23 09:18:44 tramp kernel: softdep_sync_buf() at softdep_sync_buf+0x547
Aug 23 09:18:44 tramp kernel: ffs_syncvnode() at ffs_syncvnode+0x299
Aug 23 09:18:44 tramp kernel: ffs_truncate() at ffs_truncate+0x463
Aug 23 09:18:44 tramp kernel: ufs_direnter() at ufs_direnter+0x6ff
Aug 23 09:18:44 tramp kernel: ufs_makeinode() at ufs_makeinode+0x25b
Aug 23 09:18:44 tramp kernel: VOP_CREATE_APV() at VOP_CREATE_APV+0x8d
Aug 23 09:18:44 tramp kernel: vn_open_cred() at vn_open_cred+0x46a
Aug 23 09:18:44 tramp kernel: kern_openat() at kern_openat+0x17f
Aug 23 09:18:44 tramp kernel: syscallenter() at syscallenter+0x1aa
Aug 23 09:18:44 tramp kernel: syscall() at syscall+0x4c
Aug 23 09:18:44 tramp kernel: Xfast_syscall() at Xfast_syscall+0xdd
Aug 23 09:18:44 tramp kernel: --- syscall (5, FreeBSD ELF64, open), rip = 
0x800dc6e2c, rsp = 0x7fffd2d8, rbp = 0x1 ---

Best regards,
Holger



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