arla-0.33 wedges NetBSD-1.4.1 machines

[Dr. Lex Wennmacher]

On Jul 14,  9:52am, Love wrote:
> When your computer
> hangs, do you have any chance break into ddb or generating a crash dump ?

O.k., so here we go:

(The machine froze again at Jul 14 15:05:59. I went to the console to invoked
ddb in order to produce a crash dump. I didn't manage to get into ddb, but the
machine did a crash dump all by itself. So, this situation is a bit different
from the wedged situations before ... Also, the last xfs debug messages are
different than the used to be.)

The panic message is:
"lockmgr: pid %d, not exclusive lock holder %d unlocking"

The kernel backtrace:
(gdb) target kcore /var/crash/netbsd.3.core
panic: lockmgr: pid %d, not exclusive lock holder %d unlocking
#0  0xf0121b3d in lockstatus (lkp=0xfa0ebce0)
    at ../../../../kern/kern_lock.c:154
154     }
(gdb) bt
#0  0xf0121b3d in lockstatus (lkp=0xfa0ebce0)
    at ../../../../kern/kern_lock.c:154
#1  0xf01d9bb3 in cpu_reboot (howto=256, bootstr=0x0)
    at ../../../../arch/i386/i386/machdep.c:1350
#2  0xf012dbf1 in panic (
    fmt=0xf0121b3d "lockmgr: pid %d, not exclusive lock holder %d unlocking")
    at ../../../../kern/subr_prf.c:212
#3  0xf0122007 in lockmgr (lkp=0xf06876b0, flags=6, interlkp=0xfa04dae8)
    at ../../../../kern/kern_lock.c:375
#4  0xfa06ce51 in ?? ()
#5  0xfa06c6d7 in ?? ()
#6  0xf0143e2c in lookup (ndp=0xfa0ebee0) at ../../../../sys/vnode_if.h:71
#7  0xf0143b1b in namei (ndp=0xfa0ebee0) at ../../../../kern/vfs_lookup.c:153
#8  0xf014a528 in vn_open (ndp=0xfa0ebee0, fmode=1, cmode=420)
    at ../../../../kern/vfs_vnops.c:122
#9  0xf014787a in sys_open (p=0xfa0e9140, v=0xfa0ebf88, retval=0xfa0ebf80)
    at ../../../../kern/vfs_syscalls.c:940
#10 0xf01e118a in syscall (frame={tf_es = -272695265, tf_ds = 1074266143,
      tf_edi = 4, tf_esi = 1074357556, tf_ebp = -272639664,
      tf_ebx = 1074311264, tf_edx = 16, tf_ecx = 0, tf_eax = 5, tf_trapno = 3,
      tf_err = 2, tf_eip = 1074208091, tf_cs = 23, tf_eflags = 642,
      tf_esp = -272639696, tf_ss = 31, tf_vm86_es = 0, tf_vm86_ds = 0,
      tf_vm86_fs = 0, tf_vm86_gs = 0}) at ../../../../arch/i386/i386/trap.c:782

The processes:
othello# ps -ax -O paddr -M /var/crash/netbsd.3.core
  PID  PADDR TT  STAT      TIME COMMAND
    0 f02496e0 ??  DLs    0:00.02 (swapper)
    1 f9e91000 ??  Ss     0:00.03 (init)
    2 f9e91138 ??  DL     0:00.01 (pagedaemon)
    3 f9e91270 ??  DL     0:00.27 (reaper)
   83 f9e91888 ??  Ss     0:00.05 (mount_mfs)
  165 f9e91618 ??  Rs     1:32.93 (syslogd)
  169 f9e91750 ??  Is     0:00.02 (portmap)
  178 f9e91af8 ??  Rs     0:00.42 (ypbind)
  224 f9e919c0 ??  Ss     0:00.20 (update)
  226 f9e91c30 ??  Is     0:00.05 (cron)
  228 f9e91d68 ??  R<s    0:00.95 (xntpd)
  230 f9e91ea0 ??  Is     0:00.01 (lpd)
  233 fa0b5004 ??  Ss     0:00.02 (sendmail)
  237 fa0b5274 ??  Is     0:00.01 (inetd)
  252 fa0b513c ??  Rs     1:01.84 (arlad)
  256 fa0b54e4 ??  Is     0:00.02 (xdm-krb4)
  264 fa0b53ac ??  Rs     0:49.25 (XF86_Mach64)
  265 fa0b5754 ??  Is     0:00.34 (sshd1)
  666 fa0b561c ??  R      0:08.69 (telnetd)
  712 fa0b5d6c ??  Is     0:00.03 (xdm-krb4)
  722 fa0e9b00 ??  R      1:49.67 (xconsole)
  754 f9e914e0 ??  S      0:00.08 (telnetd)
  362 fa0b5c34 p0- RN   247:01.62 (rc5des-netbsd-i3)
  755 fa0b5ea4 p1  Is     0:00.11 (csh)
  788 fa0b59c4 p1  S+     0:03.93 (sh)
 8586 fa0b588c p1  S+     0:00.02 (sh)
 8620 fa0e9140 p1  R+     0:00.00 (sed)
 8621 fa0e9758 p1  S+     0:00.00 (sh)
 8622 fa0e93b0 p1  S+     0:00.00 (sh)
 8623 fa0e9278 p1  D+     0:00.00 (sed)
 8624 fa0e9890 p1  S+     0:00.00 (sed)
  667 fa0b5afc p2  Is+    0:00.04 (csh)
  267 f9e913a8 E0  Is+    0:00.01 (getty)

arlad:
(gdb) target kcore /var/crash/netbsd.3.core
panic: lockmgr: pid %d, not exclusive lock holder %d unlocking
#0  0xf0121b3d in lockstatus (lkp=0xfa0ebce0)
    at ../../../../kern/kern_lock.c:154
154     }
(gdb) proc 0xfa0b513c
(gdb) bt
#0  mi_switch () at ../../../../kern/kern_synch.c:633
#1  0xf01e1257 in syscall (frame={tf_es = 720927, tf_ds = 458783,
      tf_edi = 35996, tf_esi = 0, tf_ebp = 5160140, tf_ebx = 6, tf_edx = -1,
      tf_ecx = 22, tf_eax = 24, tf_trapno = 3, tf_err = 2,
      tf_eip = 1074681771, tf_cs = 23, tf_eflags = 582, tf_esp = 5160072,
      tf_ss = 31, tf_vm86_es = 0, tf_vm86_ds = 0, tf_vm86_fs = 0,
      tf_vm86_gs = 0}) at ../../../../arch/i386/i386/trap.c:194


The system log is in
ftp://gutemine.geo.Uni-Koeln.DE/pub/arla/messages.000714.gz

Please let me know what I can do more to debug.

Cheers
Lex