Public bug reported: $ lsb_release -rd Description: Ubuntu 12.10 Release: 12.10 $ uname -a Linux t520sds 3.5.0-26-generic #42-Ubuntu SMP Fri Mar 8 23:18:20 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
an attempt to umount a cifs FS resulted in a crash. here is the relevant part of syslog: Mar 24 15:44:13 t520sds kernel: [250013.988054] ------------[ cut here ]------------ Mar 24 15:44:13 t520sds kernel: [250013.988160] kernel BUG at /build/buildd/linux-3.5.0/fs/dcache.c:965! Mar 24 15:44:13 t520sds kernel: [250013.988293] invalid opcode: 0000 [#1] SMP Mar 24 15:44:13 t520sds kernel: [250013.988395] CPU 3 Mar 24 15:44:13 t520sds kernel: [250013.988442] Modules linked in: md4 nls_utf8 cifs fscache psmouse deflate zlib_deflate ctr twofish_generic twofish_ x86_64_3way twofish_x86_64 camellia_generic twofish_common camellia_x86_64 serpent_sse2_x86_64 lrw serpent_generic xts gf128mul blowfish_generic blowf ish_x86_64 blowfish_common cast5 des_generic xcbc rmd160 sha512_generic crypto_null af_key xfrm_algo bnep rfcomm parport_pc ppdev arc4 joydev snd_hda_ codec_hdmi snd_hda_codec_conexant iwlwifi uvcvideo kvm btusb videobuf2_core i915 mac80211 bluetooth videodev drm_kms_helper drm snd_hda_intel thinkpad _acpi snd_hda_codec mei cfg80211 serio_raw snd_hwdep ghash_clmulni_intel snd_pcm aesni_intel snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq video buf2_vmalloc wmi cryptd mac_hid videobuf2_memops lpc_ich aes_x86_64 i2c_algo_bit snd_timer snd_seq_device nvram tpm_tis snd video soundcore snd_page_a lloc binfmt_misc microcode coretemp lp parport ahci libahci firewire_ohci sdhci_pci sdhci firewire_core crc_itu_t e1000e [last u Mar 24 15:44:13 t520sds kernel: nloaded: psmouse] Mar 24 15:44:13 t520sds kernel: [250013.990809] Mar 24 15:44:13 t520sds kernel: [250013.990825] Pid: 18617, comm: umount Tainted: G W 3.5.0-26-generic #42-Ubuntu LENOVO 42404EU/42404EU Mar 24 15:44:13 t520sds kernel: [250013.991040] RIP: 0010:[<ffffffff81197997>] [<ffffffff81197997>] shrink_dcache_for_umount_subtree+0x1c7/0x1d0 Mar 24 15:44:13 t520sds kernel: [250013.991250] RSP: 0018:ffff8801a8345dc8 EFLAGS: 00010296 Mar 24 15:44:13 t520sds kernel: [250013.991323] RAX: 0000000000000067 RBX: ffff8801f123b0c0 RCX: 000000000000fd7f Mar 24 15:44:13 t520sds kernel: [250013.991415] RDX: 000000000000fd7f RSI: 0000000000000086 RDI: 0000000000000246 Mar 24 15:44:13 t520sds kernel: [250013.991507] RBP: ffff8801a8345de8 R08: 0000000000000baa R09: 2931282065737520 Mar 24 15:44:13 t520sds kernel: [250013.991597] R10: 6e756f6d6e755b20 R11: 66696320666f2074 R12: ffff880100b85d80 Mar 24 15:44:13 t520sds kernel: [250013.991689] R13: ffffffffa05ee900 R14: ffff8801cd7c2720 R15: ffff8801cd7c2748 Mar 24 15:44:13 t520sds kernel: [250013.991781] FS: 00007f6bed98b800(0000) GS:ffff88021dcc0000(0000) knlGS:0000000000000000 Mar 24 15:44:13 t520sds kernel: [250013.991884] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Mar 24 15:44:13 t520sds kernel: [250013.991963] CR2: 00000000007b2e10 CR3: 00000001b294c000 CR4: 00000000000407e0 Mar 24 15:44:13 t520sds kernel: [250013.992055] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Mar 24 15:44:13 t520sds kernel: [250013.992146] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Mar 24 15:44:13 t520sds kernel: [250013.992239] Process umount (pid: 18617, threadinfo ffff8801a8344000, task ffff8800030e0000) Mar 24 15:44:13 t520sds kernel: [250013.992352] Stack: Mar 24 15:44:13 t520sds kernel: [250013.992383] ffff88015d1cfec0 ffffffff816768ab ffff88015d1cfc00 ffffffffa0603000 Mar 24 15:44:13 t520sds kernel: [250013.992496] ffff8801a8345e08 ffffffff81199b53 ffff8800030e0000 ffff88015d1cfc00 Mar 24 15:44:13 t520sds kernel: [250013.992607] ffff8801a8345e38 ffffffff81184a3c ffff88020f525c00 0000000000000017 Mar 24 15:44:13 t520sds kernel: [250013.992724] Call Trace: Mar 24 15:44:13 t520sds kernel: [250013.992771] [<ffffffff816768ab>] ? __slab_free+0xee/0x25e Mar 24 15:44:13 t520sds kernel: [250013.992849] [<ffffffff81199b53>] shrink_dcache_for_umount+0x33/0x60 Mar 24 15:44:13 t520sds kernel: [250013.992936] [<ffffffff81184a3c>] generic_shutdown_super+0x2c/0xf0 Mar 24 15:44:13 t520sds kernel: [250013.993019] [<ffffffff81184b96>] kill_anon_super+0x16/0x30 Mar 24 15:44:13 t520sds kernel: [250013.993101] [<ffffffffa05be24a>] cifs_kill_sb+0x1a/0x30 [cifs] Mar 24 15:44:13 t520sds kernel: [250013.993182] [<ffffffff811844b7>] deactivate_locked_super+0x57/0x90 Mar 24 15:44:13 t520sds kernel: [250013.993266] [<ffffffff8118472e>] deactivate_super+0x4e/0x70 Mar 24 15:44:13 t520sds kernel: [250013.993344] [<ffffffff811a0a5e>] mntput_no_expire+0xfe/0x160 Mar 24 15:44:13 t520sds kernel: [250013.993423] [<ffffffff811a18b6>] sys_umount+0x76/0x3a0 Mar 24 15:44:13 t520sds kernel: [250013.993498] [<ffffffff816890e9>] system_call_fastpath+0x16/0x1b Mar 24 15:44:13 t520sds kernel: [250013.993576] Code: 00 00 48 8b 40 28 4c 8b 08 48 8b 43 30 48 85 c0 74 1b 48 8b 50 40 48 89 34 24 48 c7 c7 e0 cc a1 81 48 89 de 31 c0 e8 f8 bf 4d 00 <0f> 0b 31 d2 eb e5 0f 0b 90 55 48 89 e5 41 54 53 66 66 66 66 90 Mar 24 15:44:13 t520sds kernel: [250013.994090] RIP [<ffffffff81197997>] shrink_dcache_for_umount_subtree+0x1c7/0x1d0 Mar 24 15:44:13 t520sds kernel: [250013.994196] RSP <ffff8801a8345dc8> Mar 24 15:44:13 t520sds kernel: [250014.011537] ---[ end trace 7bae219adab8e7a5 ]--- ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: linux-image-3.5.0-26-generic 3.5.0-26.42 ProcVersionSignature: Ubuntu 3.5.0-26.42-generic 3.5.7.6 Uname: Linux 3.5.0-26-generic x86_64 ApportVersion: 2.6.1-0ubuntu10 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: sds 2439 F.... pulseaudio Date: Sun Mar 24 15:56:18 2013 HibernationDevice: RESUME=UUID=901a531f-78b8-4566-aeb7-2215737ec4dd InstallationDate: Installed on 2011-11-01 (509 days ago) InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) MachineType: LENOVO 42404EU MarkForUpload: True ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-26-generic root=UUID=38878cd7-8edb-411f-b50d-f004d003365b ro quiet splash enable_mtrr_cleanup mtrr_spare_reg_nr=1 mtrr_gran_size=32M mtrr_chunk_size=128M vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.5.0-26-generic N/A linux-backports-modules-3.5.0-26-generic N/A linux-firmware 1.95 SourcePackage: linux UpgradeStatus: Upgraded to quantal on 2013-03-21 (2 days ago) dmi.bios.date: 07/11/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 8AET49WW (1.29 ) dmi.board.asset.tag: Not Available dmi.board.name: 42404EU dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr8AET49WW(1.29):bd07/11/2011:svnLENOVO:pn42404EU:pvrThinkPadT520:rvnLENOVO:rn42404EU:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 42404EU dmi.product.version: ThinkPad T520 dmi.sys.vendor: LENOVO ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug quantal running-unity -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1159508 Title: kernel crash on umount cifs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1159508/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs