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    SubjectRe: 2.6.18-rc6-mm2
    On 12/09/06, Andrew Morton <akpm@osdl.org> wrote:
    >
    > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc6/2.6.18-rc6-mm2/
    >

    I get this while umounting jfs (umount segfaulted).

    BUG: unable to handle kernel paging request at virtual address 6b6b6c4f
    printing eip:
    c013a612
    *pde = 00000000
    Oops: 0002 [#1]
    4K_STACKS PREEMPT SMP
    last sysfs file: /devices/platform/i2c-9191/9191-0290/temp2_input
    Modules linked in: jfs nls_base xfs reiser4 reiserfs ext2 loop ipv6
    w83627hf hwmon_vid hwmon i2c_isa af_packet ip_conntrack_netbios_ns
    ipt_REJECT xt_state ip_conntrack nfnetlink xt_tcpudp iptable_filter
    ip_tables x_tables cpufreq_userspace p4_clockmod speedstep_lib
    binfmt_misc thermal processor fan container evdev snd_intel8x0
    snd_ac97_codec snd_ac97_bus snd_seq_dummy snd_seq_oss
    snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss
    snd_pcm sk98lin snd_timer skge snd soundcore snd_page_alloc intel_agp
    agpgart ide_cd i2c_i801 iTCO_wdt cdrom rtc unix
    CPU: 1
    EIP: 0060:[<c013a612>] Not tainted VLI
    EFLAGS: 00010046 (2.6.18-rc6-mm2 #120)
    EIP is at __lock_acquire+0x35e/0xae8
    eax: 00000000 ebx: 6b6b6b6b ecx: c036b3d8 edx: 00000000
    esi: 00000002 edi: f1620030 ebp: f158be7c esp: f158be48
    ds: 007b es: 007b ss: 0068
    Process umount (pid: 19719, ti=f158b000 task=f1620030 task.ti=f158b000)
    Stack: 000007bf 00000000 00000000 f173fd4c f1620030 f2543874 00000002 00000000
    00000078 c02f980b f16205b8 00000002 f1620030 f158beb0 c013ae74 00000000
    00000002 00000000 fdcfc85b c02f7e43 00000003 f1620590 00000004 f1620608
    Call Trace:
    [<c013ae74>] lock_release_non_nested+0xd8/0x143
    [<c013b291>] lock_release+0x178/0x19f
    [<c02f7dc5>] __mutex_unlock_slowpath+0xbb/0x131
    [<c02f7e43>] mutex_unlock+0x8/0xa
    [<c017655f>] generic_shutdown_super+0x9c/0xd9
    [<c01765bc>] kill_block_super+0x20/0x32
    [<c017667c>] deactivate_super+0x5d/0x6f
    [<c01892bc>] mntput_no_expire+0x52/0x85
    [<c017b2c9>] path_release_on_umount+0x15/0x18
    [<c018a469>] sys_umount+0x1e1/0x215
    [<c018a4aa>] sys_oldumount+0xd/0xf
    [<c0103156>] sysenter_past_esp+0x5f/0x99
    DWARF2 unwinder stuck at sysenter_past_esp+0x5f/0x99

    Leftover inexact backtrace:

    =======================
    Code: 68 0b e6 2f c0 68 e7 04 00 00 68 e9 f4 31 c0 68 f4 84 31 c0 e8
    7f 7b fe ff e8 3d a4 fc ff 83 c4 10 eb 08 85 db 0f 84 6d 07 00 00 <f0>
    ff 83 e4 00 00 00 8b 55 dc 8b 92 5c 05 00 00 89 55 e4 83 fa
    EIP: [<c013a612>] __lock_acquire+0x35e/0xae8 SS:ESP 0068:f158be48
    <3>BUG: sleeping function called from invalid context at
    /usr/src/linux-mm/mm/slab.c:2985
    in_atomic():0, irqs_disabled():1
    [<c01041ba>] dump_trace+0x63/0x1ca
    [<c0104333>] show_trace_log_lvl+0x12/0x25
    [<c0104993>] show_trace+0xd/0x10
    [<c0104a58>] dump_stack+0x16/0x18
    [<c011a8b7>] __might_sleep+0x8d/0x95
    [<c01709f7>] kmem_cache_zalloc+0x28/0xe3
    [<c0152dae>] taskstats_exit_alloc+0x2e/0x6c
    [<c01246e4>] do_exit+0x1b6/0x9fe
    [<c01048a3>] die+0x2ae/0x2d4
    [<c0118b0c>] do_page_fault+0x4a4/0x584
    [<c02f9b4f>] error_code+0x3f/0x44
    DWARF2 unwinder stuck at error_code+0x3f/0x44
    Leftover inexact backtrace:

    [<c013ae74>] lock_release_non_nested+0xd8/0x143
    [<c013b291>] lock_release+0x178/0x19f
    [<c02f7dc5>] __mutex_unlock_slowpath+0xbb/0x131
    [<c02f7e43>] mutex_unlock+0x8/0xa
    [<c017655f>] generic_shutdown_super+0x9c/0xd9
    [<c01765bc>] kill_block_super+0x20/0x32
    [<c017667c>] deactivate_super+0x5d/0x6f
    [<c01892bc>] mntput_no_expire+0x52/0x85
    [<c017b2c9>] path_release_on_umount+0x15/0x18
    [<c018a469>] sys_umount+0x1e1/0x215
    [<c018a4aa>] sys_oldumount+0xd/0xf
    [<c0103156>] sysenter_past_esp+0x5f/0x99
    =======================

    http://www.stardust.webpages.pl/files/mm/2.6.18-rc6-mm2/mm-config1
    http://www.stardust.webpages.pl/files/mm/2.6.18-rc6-mm2/mm-dmesg1

    Regards,
    Michal

    --
    Michal K. K. Piotrowski
    LTG - Linux Testers Group
    (http://www.stardust.webpages.pl/ltg/)
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