panic: __lockmgr_args: unknown lockmgr request 0x0

[Lothar Braun]

Hi,

Kris Kennaway wrote:
>> dmesg says:
>>
>> SGI XFS with large block numbers, tracing, no debug enabled
>> fsname '/dev/ad8s4' logname '' rtname ''
>> flags 0x200000 sunit 0 swidth 0 logbufs -1 logbufsize -1
>> xfs_setsize_buftarg NI 0xc692d420
>> XFS mounting filesystem /dev/ad8s4
>> Ending clean XFS mount for filesystem: /dev/ad8s4
>> xfs_iunpin: REC RECABLE ip 0xc6f89d38
>> xfs_iunpin: REC RECABLE ip 0xc6f8a000
>> xfs_iflush: ip 0xc6f89d38 i_ino 131
>>
>>
>> I'll recompile the kernel with INVARIANTS and WITNESS enabled in order 
>> to get more information about the problem.
> 
> And DEBUG_LOCKS and DEBUG_VFS_LOCKS please :)

I now have

makeoptions     DEBUG=-g
options         KDB                     # Enable kernel debugger support.
options         KDB_UNATTENDED
options         DDB                     # Support DDB.
options         GDB                     # Support remote GDB.
options         INVARIANTS              # Enable calls of extra sanity 
checking
options         INVARIANT_SUPPORT       # Extra sanity checks of 
internal structures, required by INVARIANTS
options         WITNESS                 # Enable checks to detect 
deadlocks and cycles
options         WITNESS_SKIPSPIN        # Don't run witness on spinlocks 
for speed
options         DEBUG_LOCKS
options         DEBUG_VFS_LOCKS

enabled and got the following output in /var/log/messages:

Jul 18 12:28:14 finch kernel: SGI XFS with large block numbers, tracing, 
no debug enabled
Jul 18 12:28:14 finch kernel: fsname '/dev/ad8s4' logname '' rtname ''
Jul 18 12:28:14 finch kernel: flags 0x200000 sunit 0 swidth 0 logbufs -1 
logbufsize -1
Jul 18 12:28:14 finch kernel: xfs_setsize_buftarg NI 0xc6773a60
Jul 18 12:28:14 finch kernel: XFS mounting filesystem /dev/ad8s4
Jul 18 12:28:15 finch kernel: Ending clean XFS mount for filesystem: 
/dev/ad8s4
Jul 18 12:28:20 finch kernel: lock order reversal:
Jul 18 12:28:20 finch kernel: 1st 0xc6dd95b8 xfs (xfs) @ 
/usr/src/sys/kern/vfs_lookup.c:432
Jul 18 12:28:20 finch kernel: 2nd 0xc6f9e090 xfsino (xfsino) @ 
/usr/src/sys/modules/xfs/../../gnu/fs/xfs/xfs_iget.c:881
Jul 18 12:28:20 finch kernel: 3rd 0xc6fa1058 xfs (xfs) @ 
/usr/src/sys/modules/xfs/../../gnu/fs/xfs/FreeBSD/xfs_freebsd_iget.c:393
Jul 18 12:28:20 finch kernel: KDB: stack backtrace:
Jul 18 12:28:20 finch kernel: 
db_trace_self_wrapper(c0b2f902,e8fc2760,c07ce8ee,c0b32188,c6fa1058,...) 
at db_trace_self_wrapper+0x26
Jul 18 12:28:20 finch kernel: 
kdb_backtrace(c0b32188,c6fa1058,c6ee0df9,c6ee0df9,c6ee0d4e,...) at 
kdb_backtrace+0x29
Jul 18 12:28:20 finch kernel: 
witness_checkorder(c6fa1058,9,c6ee0d4e,189,4,...) at 
witness_checkorder+0x6de
Jul 18 12:28:20 finch kernel: 
__lockmgr_args(c6fa1058,80400,c6fa10c0,0,0,...) at __lockmgr_args+0x777
Jul 18 12:28:20 finch kernel: 
vop_stdlock(e8fc2860,c6fa10f4,c6fa1000,80400,c6fa1000,...) at 
vop_stdlock+0x65
Jul 18 12:28:20 finch kernel: 
VOP_LOCK1_APV(c6eea5c0,e8fc2860,c0c3a2a0,c6fa1000,80400,...) at 
VOP_LOCK1_APV+0xa5
Jul 18 12:28:20 finch kernel: 
_vn_lock(c6fa1000,80400,c6ee0d4e,189,e8fc28dc,...) at _vn_lock+0x5e
Jul 18 12:28:20 finch kernel: xfs_iget(c6926800,c6fa3000,83,0,1,...) at 
xfs_iget+0x27b
Jul 18 12:28:20 finch kernel: 
xfs_trans_iget(c6926800,c6fa3000,83,0,1,...) at xfs_trans_iget+0x256
Jul 18 12:28:20 finch kernel: xfs_ialloc(c6fa3000,c6f9e000,41ed,2,0,...) 
at xfs_ialloc+0xda
Jul 18 12:28:20 finch kernel: 
xfs_dir_ialloc(e8fc2a78,c6f9e000,41ed,2,0,...) at xfs_dir_ialloc+0x82
Jul 18 12:28:20 finch kernel: 
xfs_mkdir(c6f9e020,e8fc2c04,e8fc2ab4,e8fc2b28,c69dd700,...) at 
xfs_mkdir+0x457
Jul 18 12:28:20 finch kernel: 
_xfs_mkdir(e8fc2c28,c0b6262e,0,e8fc2c28,e8fc2bd8,...) at _xfs_mkdir+0xb0
Jul 18 12:28:20 finch kernel: 
VOP_MKDIR_APV(c6eea5c0,e8fc2c28,e97,e95,1,...) at VOP_MKDIR_APV+0xc5
Jul 18 12:28:20 finch kernel: 
kern_mkdirat(c67778c0,ffffff9c,bfbfee32,0,1ff,...) at kern_mkdirat+0x276
Jul 18 12:28:20 finch kernel: 
kern_mkdir(c67778c0,bfbfee32,0,1ff,e8fc2d2c,...) at kern_mkdir+0x2e
Jul 18 12:28:20 finch kernel: mkdir(c67778c0,e8fc2cf8,8,c,c0c003e0,...) 
at mkdir+0x29
Jul 18 12:28:20 finch kernel: syscall(e8fc2d38) at syscall+0x2a3
Jul 18 12:28:20 finch kernel: Xint0x80_syscall() at Xint0x80_syscall+0x20
Jul 18 12:28:20 finch kernel: --- syscall (136, FreeBSD ELF32, mkdir), 
eip = 0x28159cd3, esp = 0xbfbfec5c, ebp = 0xbfbfed28 ---
Jul 18 12:28:23 finch kernel: xfs_iunpin: REC RECABLE ip 0xc6f9dd80
Jul 18 12:28:23 finch kernel: xfs_iunpin: REC RECABLE ip 0xc6f9e000
Jul 18 12:28:25 finch kernel: System call stat returning with the 
following locks held:
Jul 18 12:28:25 finch kernel: exclusive lockmgr xfs r = 0 (0xc6fa1058) 
locked @ /usr/src/sys/modules/xfs/../.

Can I provide any additional information?

Regards,
   Lothar