Date: Thu, 21 Nov 2002 18:59:11 +1100 From: Tim Robbins <tjr@FreeBSD.ORG> To: current@FreeBSD.ORG Subject: smbfs panic Message-ID: <20021121185911.A64261@dilbert.robbins.dropbear.id.au>
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Here's a backtrace of a smbfs panic. Looks like it does not correctly
handle the smbfs_getpages error it is encountering and leaves garbage
vnodes lying around. The panic probably comes from the VI_LOCK macro
call on smbfs_node.c line 321.
# cp blah.tar.gz ~tim
cp: /home/tim/blah.tar.gz: Bad address
in dmesg:
smbfs_getpages: error 60
vm_fault: pager read error, pid 433 (cp)
Upon trying to halt:
syncing disks, buffers remaining...
done
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0xdeadc0de
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc0171e23
stack pointer = 0x10:0xc5bd2a1c
frame pointer = 0x10:0xc5bd2a3c
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
process eflags = interrupt enabled, IOPL = 0
current process = halt
kernel: type 12 trap, code=0
Stopped at _mtx_lock_flags+0x43: cmpl $0xc02afd80,0(%ebx)
db> trace
_mtx_lock_flags(deadc0de,0,c0f280b7,141,c0f05000) at _mtx_lock_flags+0x43
smbfs_reclaim(c5bd2a94,12,c0602540,c0602540,0) at smbfs_reclaim+0x11a
vclean(c0f53a68,8,c0602540,6,c0f53a68) at vclean+0x229
vgonel(c0f53a68,c0602540,c02903f2,94a,0) at vgonel+0x5c
smbfs_umount(c0ea8400,80000,c0602540,c0602540,0) at smbfs_umount+0x3c
dounmount(c0ea8400,80000,c0602540,ffffffff,c216304c) at dounmount+0x204
vfs_unmountall(...)
boot(...)
reboot(...)
syscall(...)
Xint0x80_syscall(...)
--- syscall (55, FreeBSD ELF32, reboot), eip = 0x8048e9f, esp = 0xbfbffb1c, ebp = 0xbfbffb60 ---
Tim
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