system crash while accessing smbfs: mutex_spin_enter

Hello,

a 4.99.69 i386 system just crashed while trying to access a smb file
system. That smbfs was mounted through a vpn tunnel, and the vpn client
program (vpnc) has exited (for some reason I don't know) at the time
I tried to access the smbfs.

Partial dmesg output:

uvm_fault(0xc050c480, 0, 1) -0xe
fatal page fault in supervisor mode
trap type 6 code 0 eip c010cd0b cs 8 eflags 10282 cr2 1 ilevel 6
kernel: supervisor trap page fault, code=0
Stopped in pid 0.41 (system) at netbsd:mutex_spin_enter+0xb: movb 0x1(%edx),%ch
db{0}No such command
db{0}db{0}mutex_spin_enter(cce0ff84,c1fa9f00,ccb1c cdc,cce0ff3c,c2219e14,c2219e00,ccb1ccec,c0157703,c 2219e14,0) at netbsd:mutex_spin_enter+0xb
smb_iod_rqprocessed(c2219e14,0,ccb1ccec,c0157755,c 2219e30,0,ccb1cd2c,c0157c93,c2219e30,0) at
smb_iod_invrq(c2219e30,0,c0466166,0,0,0,c02cc7fc,c c9ce1a0,c2219e28,804bb18) at netbsd:smb_iod_invrq+0x33
smb_iod_thread(c2219e00,0,c01002cd,0,c01002cd,0,0, 0,0,0) at netbsd:smb_iod_thread+0xe3
db{0}syncing disks 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 giving up

dumping to dev 0,1 offset 3146535
dump


Any hints?

Jukka

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