Date: Wed, 19 Feb 2003 21:18:48 +0100 From: Poul-Henning Kamp <phk@phk.freebsd.dk> To: current@freebsd.org Subject: Page fault on disk-less machine Message-ID: <4239.1045685928@critter.freebsd.dk>
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Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x34
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc018fd20
stack pointer = 0x10:0xc5fd27a4
frame pointer = 0x10:0xc5fd27c0
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 414 (cron)
kernel: type 12 trap, code=0
Stopped at 0xc018fd20 = _mtx_lock_flags+0x40: cmpl $0xc02c1160,0(%ecx)
db> trace
_mtx_lock_flags(34,0,c02a5f56,9e,c0d9e1e0) at 0xc018fd20 = _mtx_lock_flags+0x40
namei(c5fd29b8,c5fd2c34,c044,c0570d00,c0d9e1e0) at 0xc01de06d = namei+0x16d
vn_open_cred(c5fd29b8,c5fd2980,0,c0554e00,c02167cf) at 0xc01efce8 = vn_open_cred+0x258
nfs_dolock(c5fd2b98,758,c0e066a8,c0db3e10,c0e066a8) at 0xc02230f5 = nfs_dolock+0x2c5
nfs_advlock(c5fd2b98,0,c029ee60,761,c02b6800) at 0xc0222578 = nfs_advlock+0x58
fdrop_locked(c0db3e10,c0d9e1e0,c029ee60,69e,6002) at 0xc017fa28 = fdrop_locked+0x138
fdrop(c0db3e10,c0d9e1e0,c018fe06,c03b3e58,6002) at 0xc017f50e = fdrop+0x3e
closef(c0db3e10,c0d9e1e0,c029ee60,595,0) at 0xc017f4bc = closef+0x12c
fdfree(c0d9e1e0,0,c029f2f4,f2,1) at 0xc017ed46 = fdfree+0x116
exit1(c0d9e1e0,100,c029f2f4,73,c5fd2d40) at 0xc0184bc7 = exit1+0x3b7
sys_exit(c0d9e1e0,c5fd2d10,c02b0451,407,1) at 0xc0184801 = sys_exit+0x41
syscall(2f,2f,2f,0,ffffffff) at 0xc027dc07 = syscall+0x257
Xint0x80_syscall() at 0xc026dabd = Xint0x80_syscall+0x1d
--- syscall (1, FreeBSD ELF32, sys_exit), eip = 0x280c36bf, esp = 0xbfbffbec, ebp = 0xbfbffc08 ---
db>
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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