kernel crashes after unmounting a cifs share: $mount.cifs //some/share /target/path -o user_name $umount /target/path will lead to a kernel oops, I've pasted the syslog dump and system info below. Mar 28 21:44:48 gonzo kernel: [11826.437106] BUG: Dentry ffff8800bf5cea80{i=80,n=/} still in use (1) [unmount of cifs cifs] Mar 28 21:44:48 gonzo kernel: [11826.437133] ------------[ cut here ]------------ Mar 28 21:44:48 gonzo kernel: [11826.437134] kernel BUG at /build/mattems- linux-2.6_2.6.32-9-amd64- NYTFdD/linux-2.6-2.6.32-9/debian/build/source_amd64_none/fs/dcache.c:670! Mar 28 21:44:48 gonzo kernel: [11826.437137] invalid opcode: 0000 [#1] SMP Mar 28 21:44:48 gonzo kernel: [11826.437140] last sysfs file: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0/charge_full Mar 28 21:44:48 gonzo kernel: [11826.437142] CPU 1 Mar 28 21:44:48 gonzo kernel: [11826.437143] Modules linked in: nls_utf8 cifs usb_storage cryptd aes_x86_64 aes_generic ppdev lp parport sco bridge stp bnep rfcomm l2cap crc16 fuse ext3 jbd mbcache loop snd_hda_codec_nvhdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec btusb bluetooth snd_hwdep snd_pcm_oss snd_mixer_oss arc4 snd_pcm ecb snd_seq_midi snd_rawmidi dvb_usb_af9015 dvb_usb iwlagn joydev snd_seq_midi_event uvcvideo videodev v4l1_compat iwlcore snd_seq i2c_i801 acer_wmi v4l2_compat_ioctl32 pcspkr dvb_core nvidia(P) psmouse led_class ac snd_timer serio_raw snd_seq_device mac80211 processor i2c_core battery snd wmi evdev soundcore snd_page_alloc cfg80211 rfkill usbhid hid xfs exportfs sg sr_mod sd_mod crc_t10dif cdrom uhci_hcd ahci libata video output atl1e intel_agp ehci_hcd button scsi_mod usbcore nls_base thermal fan thermal_sys [last unloaded: scsi_wait_scan] Mar 28 21:44:48 gonzo kernel: [11826.437196] Pid: 6174, comm: umount Tainted: P 2.6.32-3-amd64 #1 Aspire 6935 Mar 28 21:44:48 gonzo kernel: [11826.437198] RIP: 0010:[<ffffffff810fc7c2>] [<ffffffff810fc7c2>] shrink_dcache_for_umount_subtree+0x185/0x251 Mar 28 21:44:48 gonzo kernel: [11826.437206] RSP: 0018:ffff880119fe9e78 EFLAGS: 00010292 Mar 28 21:44:48 gonzo kernel: [11826.437208] RAX: 0000000000000064 RBX: ffff8800bf5cea80 RCX: 000000000000e9f4 Mar 28 21:44:48 gonzo kernel: [11826.437210] RDX: 0000000000000000 RSI: 0000000000000092 RDI: 0000000000000246 Mar 28 21:44:48 gonzo kernel: [11826.437212] RBP: ffff8800bf5cea80 R08: 0000000000000002 R09: ffffffff81399d7f Mar 28 21:44:48 gonzo kernel: [11826.437214] R10: 0000000000000000 R11: 00000000000186a0 R12: 0000000000010bd0 Mar 28 21:44:48 gonzo kernel: [11826.437215] R13: ffff8800bf5ced20 R14: 0000000000000000 R15: 0000000000000000 Mar 28 21:44:48 gonzo kernel: [11826.437218] FS: 00007f8f8aeb1730(0000) GS:ffff880005280000(0000) knlGS:0000000000000000 Mar 28 21:44:48 gonzo kernel: [11826.437220] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Mar 28 21:44:48 gonzo kernel: [11826.437222] CR2: 00000000006d8fa8 CR3: 000000010214b000 CR4: 00000000000006e0 Mar 28 21:44:48 gonzo kernel: [11826.437224] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Mar 28 21:44:48 gonzo kernel: [11826.437226] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Mar 28 21:44:48 gonzo kernel: [11826.437228] Process umount (pid: 6174, threadinfo ffff880119fe8000, task ffff8800bdffaa60) Mar 28 21:44:48 gonzo kernel: [11826.437229] Stack: Mar 28 21:44:48 gonzo kernel: [11826.437230] ffff88012f29ca60 ffff88012f29c800 ffffffffa0d2ef30 ffff880101dd2a30 Mar 28 21:44:48 gonzo kernel: [11826.437233] <0> ffff880101dd2a00 ffffffff810fc8bd ffff88012f29c800 ffffffff810ef30a Mar 28 21:44:48 gonzo kernel: [11826.437237] <0> ffffffffa0d49720 0000000000000013 ffffffffa0d49720 ffffffff810ef422 Mar 28 21:44:48 gonzo kernel: [11826.437240] Call Trace: Mar 28 21:44:48 gonzo kernel: [11826.437244] [<ffffffff810fc8bd>] ? shrink_dcache_for_umount+0x2f/0x3d Mar 28 21:44:48 gonzo kernel: [11826.437247] [<ffffffff810ef30a>] ? generic_shutdown_super+0x19/0xee Mar 28 21:44:48 gonzo kernel: [11826.437250] [<ffffffff810ef422>] ? kill_anon_super+0x9/0x40 Mar 28 21:44:48 gonzo kernel: [11826.437252] [<ffffffff810efad2>] ? deactivate_super+0x60/0x7a Mar 28 21:44:48 gonzo kernel: [11826.437256] [<ffffffff81102127>] ? sys_umount+0x2c3/0x2f2 Mar 28 21:44:48 gonzo kernel: [11826.437260] [<ffffffff81010b42>] ? system_call_fastpath+0x16/0x1b Mar 28 21:44:48 gonzo kernel: [11826.437261] Code: 8b 08 48 8b 45 10 48 85 c0 74 04 48 8b 50 40 48 8d 86 60 02 00 00 48 c7 c7 87 e6 3a 81 48 89 ee 48 89 04 24 31 c0 e8 42 0c 1f 00 <0f> 0b eb fe 48 8b 5d 28 48 39 dd 75 04 31 db eb 03 f0 ff 0b 48 Mar 28 21:44:48 gonzo kernel: [11826.437285] RIP [<ffffffff810fc7c2>] shrink_dcache_for_umount_subtree+0x185/0x251 Mar 28 21:44:48 gonzo kernel: [11826.437288] RSP <ffff880119fe9e78> Mar 28 21:44:48 gonzo kernel: [11826.437290] ---[ end trace c5440e8e073c604d ]--- --- System information. --- Architecture: amd64 Kernel: Linux 2.6.32-3-amd64 Debian Release: squeeze/sid 500 unstable www.debian-multimedia.org 500 unstable ftp.nl.debian.org 500 stable deb.opera.com --- Package information. --- Package's Depends field is empty. Package's Recommends field is empty. Package's Suggests field is empty.
*** This bug has been marked as a duplicate of bug 7407 ***