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Date:      Fri, 13 Feb 2015 21:30:16 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-fs@FreeBSD.org
Subject:   [Bug 191895] [ext2fs] [panic] ext2_dirbad: /mnt: bad dir ino 32787 at offset 6136: mangled entry
Message-ID:  <bug-191895-3630-pnPZDndUPc@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-191895-3630@https.bugs.freebsd.org/bugzilla/>
References:  <bug-191895-3630@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=191895

--- Comment #6 from Peter Holm <pho@FreeBSD.org> ---
No change:

FreeBSD t2.osted.lan 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r278708: Fri Feb 13
22:06:30 CET 2015     pho@t2.osted.lan:/usr/src/sys/amd64/compile/PHO  amd64
root@t2:~pho/stress2/misc # ./ext2fs.sh 
mke2fs 1.42.10 (18-May-2014)
     run: run time  0+00:10:00, incarnations   1, load 100, verbose 1
22:26:49 Loop #1
  lockf2: run time  0+00:02:00, incarnations  19, load  80, verbose 1
 symlink: run time  0+00:02:00, incarnations   1, load  80, verbose 1
      rw: run time  0+00:02:00, incarnations   1, load  80, verbose 1
     fts: run time  0+00:02:00, incarnations  10, load  80, verbose 1
    link: run time  0+00:02:00, incarnations  13, load  80, verbose 1
  openat: run time  0+00:02:00, incarnations   1, load  80, verbose 1
   lockf: run time  0+00:02:00, incarnations   1, load  80, verbose 1
  rename: run time  0+00:02:00, incarnations  17, load  80, verbose 1
  mkfifo: run time  0+00:02:00, incarnations  17, load  80, verbose 1
   creat: run time  0+00:02:00, incarnations  15, load  80, verbose 1
   mkdir: run time  0+00:02:00, incarnations  17, load  80, verbose 1
bad directory entry: rec_len is smaller than minimal
offset=2040, inode=0, rec_len=8, name_len=0
panic: ext2_dirbad: /mnt: bad dir ino 49187 at offset 6136: mangled entry

cpuid = 17
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe081e1a8130
vpanic() at vpanic+0x189/frame 0xfffffe081e1a81b0
panic() at panic+0x43/frame 0xfffffe081e1a8210
ext2_search_dirblock() at ext2_search_dirblock+0x2a3/frame 0xfffffe081e1a8290
ext2_htree_lookup() at ext2_htree_lookup+0x162/frame 0xfffffe081e1a8390
ext2_lookup_ino() at ext2_lookup_ino+0x20c/frame 0xfffffe081e1a84b0
VOP_CACHEDLOOKUP_APV() at VOP_CACHEDLOOKUP_APV+0x10f/frame 0xfffffe081e1a84e0
vfs_cache_lookup() at vfs_cache_lookup+0xd6/frame 0xfffffe081e1a8540
VOP_LOOKUP_APV() at VOP_LOOKUP_APV+0x10f/frame 0xfffffe081e1a8570
lookup() at lookup+0x5d5/frame 0xfffffe081e1a8600
namei() at namei+0x536/frame 0xfffffe081e1a86c0
vn_open_cred() at vn_open_cred+0xd5/frame 0xfffffe081e1a8820
kern_openat() at kern_openat+0x257/frame 0xfffffe081e1a89a0
amd64_syscall() at amd64_syscall+0x29c/frame 0xfffffe081e1a8ab0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe081e1a8ab0
--- syscall (499, FreeBSD ELF64, sys_openat), rip = 0x800b08fba, rsp =
0x7fffffffe5b8, rbp = 0x7fffffffe690 ---
KDB: enter: panic
[ thread pid 970 tid 100491 ]
Stopped at      kdb_enter+0x3e: movq    $0,kdb_why
db>

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