Kernel panic - page fault in inodedep_find

For a couple of days I am getting panics/freezes with GENERIC kernel (~2
days old as well as up-to-date CURRENT). The trace (when I get a chance
to see it and when dump works) is attached. I have got crash dump so can
provide more details as required.

The panic seem to be provoked by heavier disk activity (running cvsup or
similar).

The machine is AMD64 SMP.

Thanks

Michal


Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address   = 0x50
fault code              = supervisor read data, page not present
instruction pointer     = 0x8:0xffffffff8059c175
stack pointer           = 0x10:0xffffffffaf6b8380
frame pointer           = 0x10:0xffffffffaf6b8390
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 1194 (cvs)
trap number             = 12
panic: page fault
cpuid = 1
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x3a
panic() at panic+0x22f
trap_fatal() at trap_fatal+0x2a9
trap_pfault() at trap_pfault+0x235
trap() at trap+0x22e
calltrap() at calltrap+0x8
--- trap 0xc, rip = 0xffffffff8059c175, rsp = 0xffffffffaf6b8380, rbp =
0xffffffffaf6b8390 ---
inodedep_find() at inodedep_find+0x12
inodedep_lookup() at inodedep_lookup+0x81
softdep_setup_inomapdep() at softdep_setup_inomapdep+0x48
ffs_nodealloccg() at ffs_nodealloccg+0x3a6
ffs_hashalloc() at ffs_hashalloc+0x62
ffs_valloc() at ffs_valloc+0xde
ufs_makeinode() at ufs_makeinode+0x6b
ufs_create() at ufs_create+0x28
VOP_CREATE_APV() at VOP_CREATE_APV+0x72
vn_open_cred() at vn_open_cred+0x4b1
kern_open() at kern_open+0x101
syscall() at syscall+0x1f0
Xfast_syscall() at Xfast_syscall+0xab
--- syscall (5, FreeBSD ELF64, open), rip = 0x8013b8c7c, rsp =
0x7fffffffe0a8, rbp = 0x10 ---
Uptime: 1m40s
Physical memory: 2034 MB
Dumping 213 MB: 198 182 166 150 134 118 102 86 70 54 38 22 6


--------------------------

#0  doadump () at pcpu.h:141
141     pcpu.h: No such file or directory.
        in pcpu.h
(kgdb) bt
#0  doadump () at pcpu.h:141
#1  0xffffffff80438920 in boot (howto=260)
at ../../../kern/kern_shutdown.c:409
#2  0xffffffff804383b7 in panic (fmt=0xffffffff80690d22 "%s")
at ../../../kern/kern_shutdown.c:563
#3  0xffffffff8063ebc9 in trap_fatal (frame=0xc,
eva=18446742975751987856) at ../../../amd64/amd64/trap.c:696
#4  0xffffffff8063ef39 in trap_pfault (frame=0xffffffffaf6b82d0,
usermode=0) at ../../../amd64/amd64/trap.c:614
#5  0xffffffff8063f16e in trap (frame=0xffffffffaf6b82d0)
at ../../../amd64/amd64/trap.c:382
#6  0xffffffff806278ee in calltrap ()
at ../../../amd64/amd64/exception.S:169
#7  0xffffffff8059c175 in inodedep_find (inodedephd=0xffffffff8106d660,
fs=0xffffff0061a4d800, inum=168358, inodedeppp=0xffff	ffffaf6b83e0)
at ../../../ufs/ffs/ffs_softdep.c:1246
#8  0xffffffff8059f73b in inodedep_lookup (mp=0xffffff0001ff1978,
inum=168358, flags=3, inodedeppp=0xffffffffaf6b83e0)
at ../../../ufs/ffs/ffs_softdep.c:1278
#9  0xffffffff805a4251 in softdep_setup_inomapdep
(bp=0xffffffff9a489f28, ip=0xffffff0057505480, newinum=168358)
at ../../../ufs/ffs/ffs_softdep.c:1530
#10 0xffffffff8058de58 in ffs_nodealloccg (ip=0xffffff0057505480, cg=7,
ipref=3494, mode=32768) at ../../../ufs/ffs/ffs_alloc.c:1783
#11 0xffffffff8058d1ae in ffs_hashalloc (ip=0xffffff0057505480, cg=7,
pref=168311, size=33188, allocator=0xffffffff8058dab2 <ffs_nodealloccg>)
at ../../../ufs/ffs/ffs_alloc.c:1269
#12 0xffffffff805900d6 in ffs_valloc (pvp=0xffffff0059781d58,
mode=33188, cred=0x291a6, vpp=0xffffffffaf6b8588)
at ../../../ufs/ffs/ffs_alloc.c:953
#13 0xffffffff805b5521 in ufs_makeinode (mode=33188,
dvp=0xffffff0059781d58, vpp=0xffffffffaf6b89d8, cnp=0xffffffffaf6b8a00)
at ../../../ufs/ufs/ufs_vnops.c:2242
#14 0xffffffff805b5aeb in ufs_create (ap=0xffffffff8106d660)
at ../../../ufs/ufs/ufs_vnops.c:188
#15 0xffffffff8067c719 in VOP_CREATE_APV (vop=0x18,
a=0xffffffffaf6b8790) at vnode_if.c:206
#16 0xffffffff804b9423 in vn_open_cred (ndp=0xffffffffaf6b89b0,
flagp=0xffffffffaf6b88fc, cmode=420, cred=0xffffff005d666780, fdidx=8)
at vnode_if.h:111
#17 0xffffffff804b23a5 in kern_open (td=0xffffff005ca12290,
path=0x466a30 <Address 0x466a30 out of bounds>, pathseg=UIO_USERSPACE,
flags=1539, mode=-1351906896) at ../../../kern/vfs_syscalls.c:984
#18 0xffffffff8063f743 in syscall (frame=0xffffffffaf6b8c80)
at ../../../amd64/amd64/trap.c:825
#19 0xffffffff80627a9b in Xfast_syscall ()
at ../../../amd64/amd64/exception.S:272
#20 0x00000008013b8c7c in ?? ()