RELENG_6 crash: "panic: lockmgr: locking against myself"

Daniel Eriksson daniel_k_eriksson at telia.com
Tue Aug 16 00:24:17 GMT 2005


On a dual AthlonMP system running RELENG_6 from just a few hours ago
(after the nswbuf fix, but before portsnap) I just got the panic at the
end of this message while copying files over NFS when the server was
busy with other things (both disk and network I/O). I don't have a
crashdump unfortunately.

Kernel options: SCHED_4BSD, PREEMPTION, ADAPTIVE_GIANT,
ZERO_COPY_SOCKETS, SMP

/Daniel Eriksson


panic: lockmgr: locking against myself
cpuid = 1
KDB: enter: panic
[thread pid 41315 tid 100158 ]
Stopped at      kdb_enter+0x30: leave   
db> tr
Tracing pid 41315 tid 100158 td 0xc3e42480
kdb_enter(3228791923,1,3228786666,3833665712,17) at kdb_enter+48
panic(3228786666,3833665724,3833665812,3228466723,65) at panic+317
lockmgr(3269149032,8194,3269149068,3286508672,3833665796) at
lockmgr+1021
vop_stdlock(3833665844,32,8194,3269148944,3833665872) at vop_stdlock+47
VOP_LOCK_APV(3229049824,3833665844,3833665852,3228161749,3238314952) at
VOP_LOCK_APV+72
vn_lock(3269148944,8194,3286508672,72,3833666588) at vn_lock+314
vrele(3269148944,3833666000,3833666008,3833666012,3833666012) at
vrele+252
nfs_lookup(3833666288,3833666204,3267556144,0,3833666316) at
nfs_lookup+2274
VOP_LOOKUP_APV(3229049824,3833666288,3833666268,3286508672,3266082944)
at VOP_LOOKUP_APV+72
lookup(3833666548,3286508672,0,0,0) at lookup+1134
namei(3833666548,3833666452,96,0,3286508672) at namei+1080
kern_stat(3286508672,3217022320,0,3833666664,100728578) at kern_stat+61
stat(3286508672,3833666820,8,3286505520,3252880840) at stat+47
syscall(59,59,59,134547418,134547405) at syscall+803
Xint0x80_syscall() at Xint0x80_syscall+31
--- syscall (188, FreeBSD ELF32, stat), eip = 671868991, esp =
3217022284, ebp = 3217023464 ---


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