panic in sys_fstatat (?)
Steve Kargl
sgk at troutmask.apl.washington.edu
Mon Feb 2 18:22:37 UTC 2015
On Mon, Feb 02, 2015 at 01:10:47PM -0500, Eric van Gyzen wrote:
> On 02/02/2015 12:59, Steve Kargl wrote:
> > (kgdb) #0 doadump (textdump=Unhandled dwarf expression opcode 0x93
> > ) at pcpu.h:219
> > #1 0xffffffff80559f47 in kern_reboot (howto=260)
> > at /usr/src/sys/kern/kern_shutdown.c:448
> > #2 0xffffffff8055a3b0 in panic (fmt=<value optimized out>)
> > at /usr/src/sys/kern/kern_shutdown.c:747
> > #3 0xffffffff807a85c0 in trap_fatal (frame=<value optimized out>,
> > eva=<value optimized out>) at /usr/src/sys/amd64/amd64/trap.c:861
> > #4 0xffffffff807a8221 in trap (frame=<value optimized out>)
> > at /usr/src/sys/amd64/amd64/trap.c:201
> > #5 0xffffffff8078d843 in calltrap ()
> > at /usr/src/sys/amd64/amd64/exception.S:235
> > #6 0xffffffff80754567 in ufs_getattr (ap=<value optimized out>)
> > at /usr/src/sys/ufs/ufs/ufs_vnops.c:463
> > #7 0xffffffff808074fa in VOP_GETATTR_APV (vop=<value optimized out>,
> > a=<value optimized out>) at vnode_if.c:731
> > #8 0xffffffff80607e62 in vn_stat (vp=0xfffff80088086000,
> > sb=0xfffffe0469290710, active_cred=0xfffff8000b07d800, file_cred=0x1,
> > td=0xfffff801b5063000) at vnode_if.h:309
> > #9 0xffffffff806017e4 in kern_statat (td=0xfffff801b5063000,
> > flag=<value optimized out>, fd=<value optimized out>,
> > path=<value optimized out>, pathseg=UIO_USERSPACE,
> > sbp=0xfffffe04692908a0, hook=0xfefff80034ba0700)
> > at /usr/src/sys/kern/vfs_syscalls.c:2241
> > #10 0xffffffff80601acc in sys_fstatat (td=0xfffff802dbc03dc8,
> > uap=0xfffffe04692909c0) at /usr/src/sys/kern/vfs_syscalls.c:2215
> > #11 0xffffffff807a8db9 in amd64_syscall (td=0xfffff801b5063000, traced=0)
> > at subr_syscall.c:133
> > #12 0xffffffff8078db2b in Xfast_syscall ()
> > at /usr/src/sys/amd64/amd64/exception.S:395
>
> I probably can't help debug this, but someone who _can_ will likely ask
> for this from kgdb:
>
> f 6
> x/i $rip
> info reg
(kgdb) f 6
#6 0xffffffff80754567 in ufs_getattr (ap=<value optimized out>)
at /usr/src/sys/ufs/ufs/ufs_vnops.c:463
463 vap->va_atime.tv_sec = ip->i_din2->di_atime;
(kgdb) x/i $rip
0xffffffff80754567 <ufs_getattr+135>: mov 0x20(%rax),%rax
(kgdb) info reg
rax 0xfefff80034ba0700 -72066389246343424
rbx 0xfffff802dbc03dc8 -8783816278584
rcx 0x1 1
rdx 0xfffff8000b07d800 -8795907958784
rsi 0xfffffe0469290688 -2180079090040
rdi 0xfffff802dbc03dc8 -8783816278584
rbp 0xfffffe04692905a0 0xfffffe04692905a0
rsp 0xfffffe0469290570 0xfffffe0469290570
r8 0xfffff801b5063000 -8788760973312
r9 0x33 51
r10 0x0 0
r11 0x0 0
r12 0xfffff801b5063000 -8788760973312
r13 0xfffffe04692905e0 -2180079090208
r14 0xfffff80088086000 -8793810771968
r15 0xfffff800880860b0 -8793810771792
rip 0xffffffff80754567 0xffffffff80754567 <ufs_getattr+135>
eflags 0x10202 66050
cs 0x20 32
ss 0x28 40
ds 0x0 0
es 0x0 0
fs 0x0 0
gs 0x0 0
--
Steve
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