I have been trying to track -current ever since 19981026, but I'm
having some troubles with filesystem stability.  My /home, /linux, and
/linux/usr partitions are ext2fs, and very regularly my system panics
when updating one of these partitions:

panic: lockmgr: pid 153, not exclusive lock holder 286 unlocking
Stopped in update at    _Debugger+0x4:  leave
db> ps
 PID              PPID       PGRP        UID S   FLAGS      COMMAND   
WAIT
 286               265        286          0 3  0x4006           cp
biowait
 265               216        265          0 3  0x4086         tcsh  
pause
 ...
>153                 1        153          0 2     0x4       update
 ...

db>  trace
_Debugger(f4ba9dd8,0,f4afeec8,f012a73f,f012a2d7) at _Debugger+0x4
_panic(f012a2d7,99,f012a2c1,11e,f4aab14) at _panic+0x55
_lockmgr(f4ba9dd8,6,f4aab260,f4afef18,f018253a) ad _lockmgr+0x3fb
_ufs_unlock(f4afef04) at _ufs_unlock+0x25
_ext2fs_sync(f0463400,2,f03fa100,f49289a0,f0463400) at _ext2fs_sync+0xf2
_sys_sync(f49289a0,f4afef88,f4afef80,0,efbdddc) at _sys_sync+0x5c
_syscall() at _syscall+0x216
--- syscall (number 36) ---
0x4004070b:
db>


  Any ideas?

  Cheers
      ,
   Rene