lkml.org 
[lkml]   [2010]   [Mar]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [linux-cifs-client] shutdown bugs, since about 2.6.31 or so
    On Tue, 23 Mar 2010 09:59:57 +0530
    Suresh Jayaraman <sjayaraman@suse.de> wrote:

    > Ccing linux-cifs-client@lists.samba.org where most of the cifs
    > development happens.
    >
    > On 03/23/2010 06:20 AM, Gene Heskett wrote:
    > > Greetings;
    > >
    > > I do not know if I am miss-configured or what, and I hadn't worried about it
    > > extensively because the machine runs fine ANAICT.
    > >
    > > But any reboot method short of just pressing the hdwe reset button generates
    > > quite a lengthy process of repeatedly pressing ctl-alt-del, minimum of 6
    > > times I believe, in order to actually do a shutdown, and this isn't at all
    > > graceful. Not all of it makes it to the log, but here is what does.
    > >
    > > Mar 22 16:47:53 coyote kernel: [ 3000.619173] BUG: Dentry d76beaa0{i=2,n=/}
    > > still in use (1) [unmount of cifs cifs]
    > > Mar 22 16:47:53 coyote kernel: [ 3000.619191] ------------[ cut here
    > > ]------------
    > > Mar 22 16:47:53 coyote kernel: [ 3000.619303] kernel BUG at fs/dcache.c:676!
    > > Mar 22 16:47:53 coyote kernel: [ 3000.619420] invalid opcode: 0000 [#1]
    > > PREEMPT SMP
    > > Mar 22 16:47:53 coyote kernel: [ 3000.619597] last sysfs file:
    > > /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/ATK0110:00/hwmon/hwmon0/in3_input
    > > Mar 22 16:47:53 coyote kernel: [ 3000.619803] Modules linked in: nls_utf8
    > > cifs radeon ttm drm_kms_helper drm agpgart nfsd lockd nfs_acl auth_rpcgss
    > > expo
    > > rtfs rfcomm sco bnep l2cap autofs4 sunrpc ipv6 or51132 snd_usb_audio
    > > snd_usb_lib cx88_dvb cx88_vp3054_i2c videobuf_dvb snd_emu10k1_synth
    > > snd_emux_synth
    > > snd_seq_virmidi snd_seq_midi_emul dvb_core tuner_simple tuner_types tda9887
    > > tda8290 tuner snd_emu10k1 cx8800 cx8802 cx88xx snd_rawmidi snd_ac97_codec ac
    > > 97_bus snd_seq_dummy i2c_algo_bit snd_seq_oss snd_seq_midi_event snd_seq
    > > ftdi_sio btusb snd_pcm_oss snd_mixer_oss snd_pcm tveeprom bluetooth
    > > snd_seq_dev
    > > ice snd_timer v4l2_common snd_page_alloc videodev snd_util_mem snd_hwdep
    > > v4l1_compat usbserial btcx_risc snd i2c_nforce2 sg k10temp firewire_ohci
    > > firewi
    > > re_core rtc_cmos videobuf_dma_sg sr_mod cdrom pcspkr soundcore videobuf_core
    > > rtc_core crc_itu_t rfkill hwmon usblp joydev rtc_lib button evdev sd_mod ex
    > > t3 jbd uhci_hcd ohci_hcd ehci_hcd [last unloaded: asus_atk0110]
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117]
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] Pid: 5747, comm: umount.cifs
    > > Not tainted 2.6.34-rc2 #1 M2N-SLI DELUXE/System Product Name
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] EIP: 0060:[<c10946ae>] EFLAGS:
    > > 00010246 CPU: 1
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] EIP is at
    > > shrink_dcache_for_umount_subtree+0x14b/0x1fe
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] EAX: 0000005b EBX: 00000001
    > > ECX: 00000046 EDX: 00000000
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] ESI: d76beaa0 EDI: d76beafc
    > > EBP: d55e6f24 ESP: d55e6ef4
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] DS: 007b ES: 007b FS: 00d8 GS:
    > > 00e0 SS: 0068
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] Process umount.cifs (pid: 5747,
    > > ti=d55e6000 task=d55d8780 task.ti=d55e6000)
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] Stack:
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] c12d20ac d76beaa0 00000002
    > > d76beafc 00000001 fa14da01 dc956b64 fa14da01
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] <0> 0000001b dc956a00 fa14a7b4
    > > dc956a00 d55e6f30 c109478e dc956a00 d55e6f40
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] <0> c1087d38 00000013 fa158a5c
    > > d55e6f4c c1087e32 dc956a00 d55e6f5c c10883c6
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] Call Trace:
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] [<c109478e>] ?
    > > shrink_dcache_for_umount+0x2d/0x37
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] [<c1087d38>] ?
    > > generic_shutdown_super+0x15/0xd2
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] [<c1087e32>] ?
    > > kill_anon_super+0xc/0x43
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] [<c10883c6>] ?
    > > deactivate_super+0x39/0x4b
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] [<c1098dfd>] ?
    > > mntput_no_expire+0x8c/0xbb
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] [<c10992df>] ?
    > > sys_umount+0x299/0x2be
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] [<c1002813>] ?
    > > sysenter_do_call+0x12/0x22
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] Code: 00 89 45 ec 8b 46 10 8b
    > > 1e 8b 7e 28 85 c0 74 03 8b 50 20 8d 81 64 01 00 00 50 ff 75 ec 53 57 52 56 6
    > > 8 ac 20 2d c1 e8 b5 fc 1b 00 <0f> 0b 83 c4 1c eb fe 8b 7e 1c 39 fe 75 04 31
    > > ff eb 03 f0 ff 0f
    > > Mar 22 16:47:53 coyote kernel: [ 3000.620117] EIP: [<c10946ae>]
    > > shrink_dcache_for_umount_subtree+0x14b/0x1fe SS:ESP 0068:d55e6ef4
    > > Mar 22 16:47:53 coyote kernel: [ 3000.627952] ---[ end trace fbecccbb5fac2d05
    > > ]---
    > >
    > > Now, after this point, I have to press ctl-alt-del at least 2 times to get it
    > > to continue the shutdown, it will timeout 3 times trying to umount /usr, and
    > > then finally squawk about a cifs mount that is done in my rc.local file.
    > > That requires 2 more presses of the ctl-alt-del keys, then it finally says
    > > its shutting down, and 20 to 30 seconds later I have to press them again
    > > before it actually reverts to the bios to begin the next boot anew.
    > >
    > > I have seen this fs/dcache.c line 676 mentioned many times here, and I would
    > > have thought by now this nuisance would have been spanked.
    > >
    > > Thanks.
    > >
    >
    >

    Looks like the same bug as reported here:

    http://lists.samba.org/archive/linux-cifs-client/2010-February/005560.html

    ...the patch I asked them to test is now here:

    http://git.samba.org/?p=jlayton/linux.git;a=commit;h=fd0ab22278f38b0e2b7d303a1101b15d3255aee9

    ...but I still think the problem is likely in how we autodisable server
    inode numbers. A way to reproduce this problem would be very helpful.

    --
    Jeff Layton <jlayton@samba.org>


    \
     
     \ /
      Last update: 2010-03-23 11:45    [W:0.029 / U:61.700 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site