Date: Fri, 11 Mar 2005 09:51:20 -0500 From: John Baldwin <jhb@FreeBSD.org> To: current@FreeBSD.org Cc: jeffr@FreeBSD.org Subject: panic on HEAD from 3/9: vrele: missed vn_close Message-ID: <200503110951.20303.jhb@FreeBSD.org>
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Got this on an Alpha DS20 (dual 500 EV6's) running HEAD from 3/9 while doing
a loop of buildworld -j 8 with 4BSD but no PREEMPTION:
login: VNASSERT failed
0xfffffc0025f68d90: tag ufs, type VFIFO
usecount 24, writecount 24, refcount 0 mountedhere 0xfffffc0000a1f600
flags ()
VI_LOCKed v_object 0
ino 9420, on dev da1a, fifo with 23 readers and 23 writers
panic: vrele: missed vn_close
cpuid = 0
KDB: enter: panic
[thread pid 31057 tid 100224 ]
Stopped at kdb_enter+0x48: or zero,zero,zero <zero=0x0>
db> tr
Tracing pid 31057 tid 100224 td 0xfffffc002282aa80
kdb_enter() at kdb_enter+0x48
panic() at panic+0x210
vrele() at vrele+0x98
vn_close() at vn_close+0xd4
vn_closefile() at vn_closefile+0x11c
fifo_close_f() at fifo_close_f+0x1c
fdrop_locked() at fdrop_locked+0xe4
fdrop() at fdrop+0x4c
closef() at closef+0x460
close() at close+0x278
syscall() at syscall+0x38c
XentSys() at XentSys+0x64
--- syscall (6, FreeBSD ELF64, close) ---
--- user mode ---
db> x 0xfffffc0025f68d90,40
0xfffffc0025f68d90: 7 0 65b789 fffffc00
0xfffffc0025f68da0: 6d5638 fffffc00 31c540d0 fffffc00
0xfffffc0025f68db0: ba6c00 fffffc00 234941f0 fffffc00
0xfffffc0025f68dc0: 2a6fa218 fffffc00 a1f600 fffffc00
0xfffffc0025f68dd0: 0 0 bedc138 fffffc00
0xfffffc0025f68de0: bedc158 fffffc00 a532b 0
0xfffffc0025f68df0: 25f68d90 fffffc00 0 0
0xfffffc0025f68e00: 0 0 0 0
0xfffffc0025f68e10: 0 0 0 0
0xfffffc0025f68e20: 709650 fffffc00 1000040 0
0xfffffc0025f68e30: 0 500000 65b789 fffffc00
0xfffffc0025f68e40: 34 0 ffffffff ffffffff
0xfffffc0025f68e50: 0 0 6bf1b8 fffffc00
0xfffffc0025f68e60: 65d63d fffffc00 65d63d fffffc00
0xfffffc0025f68e70: 30000 0 0 0
0xfffffc0025f68e80: 0 0 0 0
--
John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve" = http://www.FreeBSD.org
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