panic: softdep_setup_inomapdep: found inode already exists in 6.2

Thu May 10 03:52:58 UTC 2007

On Thu, May 03, 2007 at 01:23:52AM +0300, Cristian KLEIN wrote:
> On Mar, Mai 1, 2007 11:42 pm, Eric Anderson wrote:
> > On 04/28/07 18:19, Cristian KLEIN wrote:
> >
> >> Hi everybody,
> >>
> >>
> >> I am running a FreeBSD 6.2-p3, on which I am experiencing exactly the
> >> same simtoms as one item of the TODO list of 6.0:
> >> http://www.freebsd.org/releases/6.0R/todo.html
> >>
> >>
> >> panic: softdep_setup_inomapdep: found inode 	Needs testing 	Tor Egge
> >> Found by stress tests at
> >> http://www.holm.cc/stress/log/cons138.html
> >>
> >>
> >> Does anybody know whether this bug should have been solved in 6.2?
> >> Should
> >> I file a PR?
> >>
> >
> >
> > Sorry if I missed it, but were you able to provide a backtrace?  If you
> > can, you should compile your kernel with debugging, so at least you could
> > make a little more out of the crash.  See the handbook if you need help on
> > that.
> 
> Hi,
> 
> I haven't mentioned any technical details yet, as I wasn't sure whether
> this issue is known or not.
> 
> First, let me tell you what I did. I wanted to better protect data on
> /jail/mail/home by doing daily snapshots, saved like
> /jail/mail/home/.snap/2007-04-03-03-22-02. I mounted one of these
> snapshots (not the latest) in /mnt/home and rsync'd it to a server. I
> might have rsync'd while taking a new snapshot.
> 
> Server started crashing randomly, either while rsync-ing, or in the
> morning, during heavy load. Now I removed the snapshots and the system is
> stable.
> 
> Other random information that might be useful: I am using gmirror and
> jail. Disabling SMP has not effect, WITNESS didn't say anything. The
> filesystem has userquotas. The filesystem stores maildir and has about
> 1.6Minodes.
> 
> Config is GENERIC + SMP + QUOTA - unused hardware devices.
> 
> root# uname -a
> FreeBSD bavaria.xxxxxx 6.2-RELEASE-p3 FreeBSD 6.2-RELEASE-p3 #5: Fri Apr
> 27 20:01:20 EEST 2007
> cristi at bavaria.xxxxxx:/usr/obj/usr/src/sys/BAVARIA-SMP  i386
> 
> root# kgdb kernel.debug /var/crash/vmcore.3
> [GDB will not be able to debug user-mode threads:
> /usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"]
> GNU gdb 6.1.1 [FreeBSD]
> Copyright 2004 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for details.
> This GDB was configured as "i386-marcel-freebsd".
> 
> Unread portion of the kernel message buffer:
> panic: softdep_setup_inomapdep: found inode already exists
> cpuid = 0
> KDB: enter: panic
> Uptime: 5h42m12s
> Dumping 1023 MB (2 chunks)
>   chunk 0: 1MB (159 pages) ... ok
>   chunk 1: 1023MB (261837 pages) 1007 991 975 959 943 927 911 895 879 863
> 847 831 815 799 783 767 751 735 719 703 687 671 655 639 623 607 591 575
> 559 543 527 511 495 479 463 447 431 415 399 383 367 351 335 319 303 287
> 271 255 239 223 207 191 175 159 143 127 111 95 79 63 47 31 15
> 
> #0  doadump () at pcpu.h:165
> 165             __asm __volatile("movl %%fs:0,%0" : "=r" (td));
> (kgdb) bt
> #0  doadump () at pcpu.h:165
> #1  0xc0545e18 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409
> #2  0xc0546149 in panic (fmt=0xc075660c "softdep_setup_inomapdep: found
> inode already exists")
>     at /usr/src/sys/kern/kern_shutdown.c:565
> #3  0xc068c64a in softdep_setup_inomapdep (bp=0xd8c2ba68, ip=0x0, newinum=0)
>     at /usr/src/sys/ufs/ffs/ffs_softdep.c:1527
> #4  0xc067d4dd in ffs_nodealloccg (ip=0xc68e818c, cg=0, ipref=Unhandled
> dwarf expression opcode 0x93
> ) at /usr/src/sys/ufs/ffs/ffs_alloc.c:1762
> #5  0xc067bb83 in ffs_hashalloc (ip=0xc68e818c, cg=0, pref=Unhandled dwarf
> expression opcode 0x93
> ) at /usr/src/sys/ufs/ffs/ffs_alloc.c:1248
> #6  0xc067b232 in ffs_valloc (pvp=0xc6883440, mode=33024, cred=0xc50d3a80,
> vpp=0xe733d4e8)
>     at /usr/src/sys/ufs/ffs/ffs_alloc.c:932
> #7  0xc06a6bd7 in ufs_makeinode (mode=33024, dvp=0xc6883440,
> vpp=0xe733d8f0, cnp=0xe733d904)
>     at /usr/src/sys/ufs/ufs/ufs_vnops.c:2220
> #8  0xc06a348f in ufs_create (ap=0x0) at
> /usr/src/sys/ufs/ufs/ufs_vnops.c:189
> #9  0xc071e879 in VOP_CREATE_APV (vop=0x0, a=0xe733d7fc) at vnode_if.c:204
> #10 0xc0684018 in ffs_snapshot (mp=0xc4e28000,
>     snapfile=0xc699c200 "/jail/mail/home/.snap/2007-04-28-03-34-31") at
> vnode_if.h:111
> #11 0xc06964d7 in ffs_mount (mp=0xc4e28000, td=0xc50e1300) at
> /usr/src/sys/ufs/ffs/ffs_vfsops.c:312
> #12 0xc059eb6e in vfs_domount (td=0xc50e1300, fstype=0xc4efac90 "ufs",
> fspath=0xc4efa670 "/jail/mail/home",
>     fsflags=16842752, fsdata=0xc4efaca0) at
> /usr/src/sys/kern/vfs_mount.c:928
> #13 0xc059e1da in vfs_donmount (td=0x0, fsflags=16842752, fsoptions=0x0)
> at /usr/src/sys/kern/vfs_mount.c:676
> #14 0xc05a0f84 in kernel_mount (ma=0xc4efac50, flags=0) at pcpu.h:162
> #15 0xc06966fb in ffs_cmount (ma=0xc4efac50, data=0x0, flags=0,
> td=0xc50e1300)
>     at /usr/src/sys/ufs/ffs/ffs_vfsops.c:392
> #16 0xc059e3f0 in mount (td=0xc50e1300, uap=0xe733dd04) at
> /usr/src/sys/kern/vfs_mount.c:742
> #17 0xc070b5bb in syscall (frame=
>       {tf_fs = 59, tf_es = 59, tf_ds = 59, tf_edi = -1077944004, tf_esi =
> -1077941276, tf_ebp = -1077943864, tf_isp = -416031388, tf_ebx =
> -1077943824, tf_edx = -1, tf_ecx = -1077940507, tf_eax = 21,
> tf_trapno = 12, tf_err = 2, tf_eip = 671885143, tf_cs = 51,
> tf_eflags = 582, tf_esp = -1077944036, tf_ss = 59})
>     at /usr/src/sys/i386/i386/trap.c:983
> #18 0xc06f60df in Xint0x80_syscall () at
> /usr/src/sys/i386/i386/exception.s:200
> #19 0x00000033 in ?? ()
> Previous frame inner to this frame (corrupt stack?)
> 
> Now that I have KDB on serial console I might be able to crash (or even
> better, test patches) at night on that system.
> 
> Please don't hesitate to request further information. I will try to
> elaborate a recipe for crashing the system.
Do you have ddb backtrace for this instance of panic ? Or, for any other
such panic, please, show both ddb backtrace and kgdb output of "bt full".
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