From: =?UTF-8?B?VG9yYWxmIEbDtnJzdGVy?= <toralf.foerster@gmx.de>
Subject: Re: found a scenario for BUG at fs/ext4/super.c:804!
Date: Sat, 03 Aug 2013 17:36:38 +0200
Message-ID: <51FD2386.2050309@gmx.de>
References: <51A79353.7030604@gmx.de> <51AA0CA1.6080600@redhat.com> <51FD1758.40107@gmx.de>
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Cc: linux-ext4@vger.kernel.org, trinity@vger.kernel.org
To: Eric Sandeen <sandeen@redhat.com>
Return-path: <trinity-owner@vger.kernel.org>
In-Reply-To: <51FD1758.40107@gmx.de>
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List-Id: linux-ext4.vger.kernel.org

forget to attach the back trace of the uML of an EXT3 est case :

tfoerste@n22 ~ $ gdb --core=3D/mnt/ramdisk/core /usr/local/bin/linux-v3=
=2E11-rc3-288-gabe0308 -n -batch -ex bt
                                                                       =
                                                                       =
        =20
warning: core file may not match specified executable file.            =
                                                                       =
        =20
[New LWP 8384]                                                         =
                                                                       =
        =20
Core was generated by `/usr/local/bin/linux-v3.11-rc3-288-gabe0308 earl=
yprintk ubda=3D/home/tfoerste/vir'.                                    =
          =20
Program terminated with signal 6, Aborted.                             =
                                                                       =
        =20
#0  0xb7735424 in __kernel_vsyscall ()                                 =
                                                                       =
        =20
#0  0xb7735424 in __kernel_vsyscall ()                                 =
                                                                       =
        =20
#1  0x083a3185 in kill ()                                              =
                                                                       =
        =20
#2  0x0807163d in uml_abort () at arch/um/os-Linux/util.c:93           =
                                                                       =
        =20
#3  0x08071925 in os_dump_core () at arch/um/os-Linux/util.c:138
#4  0x080613a7 in panic_exit (self=3D0x85a1518 <panic_exit_notifier>, u=
nused1=3D0, unused2=3D0x85d6ce0 <buf.15904>) at arch/um/kernel/um_arch.=
c:240
#5  0x0809a388 in notifier_call_chain (nl=3D0x0, val=3D0, v=3D0x85d6ce0=
 <buf.15904>, nr_to_call=3D-2, nr_calls=3D0x0) at kernel/notifier.c:93
#6  0x0809a4d3 in __atomic_notifier_call_chain (nr_calls=3D<optimized o=
ut>, nr_to_call=3D<optimized out>, v=3D<optimized out>, val=3D<optimize=
d out>, nh=3D<optimized out>) at kernel/notifier.c:182
#7  atomic_notifier_call_chain (nh=3D0x85d6cc4 <panic_notifier_list>, v=
al=3D0, v=3D0x85d6ce0 <buf.15904>) at kernel/notifier.c:191
#8  0x08400968 in panic (fmt=3D0x0) at kernel/panic.c:128
#9  0x08168632 in ext3_put_super (sb=3D0x650e0f50) at fs/ext3/super.c:4=
53
#10 0x08101092 in generic_shutdown_super (sb=3D0x650e0f50) at fs/super.=
c:418
#11 0x0810205a in kill_block_super (sb=3D0x0) at fs/super.c:1028
#12 0x08100f2a in deactivate_locked_super (s=3D0x650e0f50) at fs/super.=
c:299
#13 0x08100fc1 in deactivate_super (s=3D0x650e0f50) at fs/super.c:324
#14 0x08118dec in mntfree (mnt=3D<optimized out>) at fs/namespace.c:891
#15 mntput_no_expire (mnt=3D0x0) at fs/namespace.c:929
#16 0x0811a2d5 in SYSC_umount (flags=3D<optimized out>, name=3D<optimiz=
ed out>) at fs/namespace.c:1335
#17 SyS_umount (name=3D134543744, flags=3D0) at fs/namespace.c:1305
#18 0x0811a349 in SYSC_oldumount (name=3D<optimized out>) at fs/namespa=
ce.c:1347
#19 SyS_oldumount (name=3D134543744) at fs/namespace.c:1345
#20 0x080618e2 in handle_syscall (r=3D0x663f6bd4) at arch/um/kernel/ska=
s/syscall.c:35
#21 0x08073c0d in handle_trap (local_using_sysemu=3D<optimized out>, re=
gs=3D<optimized out>, pid=3D<optimized out>) at arch/um/os-Linux/skas/p=
rocess.c:198
#22 userspace (regs=3D0x663f6bd4) at arch/um/os-Linux/skas/process.c:43=
1
#23 0x0805e65c in fork_handler () at arch/um/kernel/process.c:160
#24 0x5a5a5a5a in ?? ()


--=20
MfG/Sincerely
Toralf F=C3=B6rster
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