** Tags added: apport-collected precise ** Description changed:
This happened probably on NFSv4, but I'm not sure if it is related here. Based on the stack trace it does not seem so. linux-image-3.5.0-17-generic Oct 26 17:40:32 fsdevel7 kernel: [345346.770480] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068 Oct 26 17:40:32 fsdevel7 kernel: [345346.772356] IP: [<ffffffff812ed2d4>] common_file_perm+0x14/0xf0 Oct 26 17:40:32 fsdevel7 kernel: [345346.773329] PGD 3b1aef067 PUD 42350e067 PMD 0 Oct 26 17:40:32 fsdevel7 kernel: [345346.774298] Oops: 0000 [#1] SMP Oct 26 17:40:32 fsdevel7 kernel: [345346.775258] CPU 1 Oct 26 17:40:32 fsdevel7 kernel: [345346.775265] Modules linked in: uas usb_storage xfs xt_state iptable_filter ipt_MASQUERADE iptable_nat nf_nat nf_conntrac k_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables cachefiles bridge stp dm_crypt llc bnep rfcomm bluetooth snd_hda_codec_conexant parport_pc gpio_ich ppd ev snd_hda_intel lp snd_hda_codec snd_hwdep snd_pcm parport snd_seq_midi snd_rawmidi kvm_intel kvm snd_seq_midi_event tpm_infineon snd_seq hid_generic snd_ti mer lpc_ich snd_seq_device snd tpm_tis mei dm_multipath soundcore snd_page_alloc joydev mac_hid scsi_dh serio_raw microcode nfsd nfs lockd fscache auth_rpcgs s sch5636 nfs_acl sch56xx_common sunrpc coretemp binfmt_misc raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 rai d0 multipath linear btrfs zlib_deflate libcrc32c hid_microsoft usbhid hid i915 ghash_clmulni_intel aesni_intel drm_kms_helper cryptd aes_x86_64 drm i2c_algo_ bit video e1000e Oct 26 17:40:32 fsdevel7 kernel: [345346.780712] Oct 26 17:40:32 fsdevel7 kernel: [345346.781873] Pid: 93817, comm: hg Not tainted 3.5.0-17-generic #28-Ubuntu FUJITSU ESPRIMO P900/D3062-A1 Oct 26 17:40:32 fsdevel7 kernel: [345346.783071] RIP: 0010:[<ffffffff812ed2d4>] [<ffffffff812ed2d4>] common_file_perm+0x14/0xf0 Oct 26 17:40:32 fsdevel7 kernel: [345346.784275] RSP: 0018:ffff880334a9fe88 EFLAGS: 00010282 Oct 26 17:40:32 fsdevel7 kernel: [345346.785480] RAX: 0000000000000000 RBX: ffff8802d9a87300 RCX: 0000000000000000 Oct 26 17:40:32 fsdevel7 kernel: [345346.786691] RDX: 0000000000000004 RSI: ffff8802d9a87300 RDI: 0000000000000010 Oct 26 17:40:32 fsdevel7 kernel: [345346.787898] RBP: ffff880334a9fe88 R08: 000000000161ce24 R09: 00007f9241653700 Oct 26 17:40:32 fsdevel7 kernel: [345346.789109] R10: 0000000000000022 R11: 0000000000000246 R12: 0000000000000004 Oct 26 17:40:32 fsdevel7 kernel: [345346.790330] R13: 0000000000000000 R14: ffff880334a9ff50 R15: 00007f923f68f0d0 Oct 26 17:40:32 fsdevel7 kernel: [345346.791549] FS: 00007f9241653700(0000) GS:ffff88043e280000(0000) knlGS:0000000000000000 Oct 26 17:40:32 fsdevel7 kernel: [345346.792771] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Oct 26 17:40:32 fsdevel7 kernel: [345346.793995] CR2: 0000000000000068 CR3: 00000002d3b3c000 CR4: 00000000000427e0 Oct 26 17:40:32 fsdevel7 kernel: [345346.795231] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Oct 26 17:40:32 fsdevel7 kernel: [345346.796468] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Oct 26 17:40:32 fsdevel7 kernel: [345346.796469] Process hg (pid: 93817, threadinfo ffff880334a9e000, task ffff880422b4dc00) Oct 26 17:40:32 fsdevel7 kernel: [345346.796469] Stack: Oct 26 17:40:32 fsdevel7 kernel: [345346.796470] ffff880334a9fe98 ffffffff812ed4a8 ffff880334a9fec8 ffffffff812b2bac Oct 26 17:40:32 fsdevel7 kernel: [345346.796472] ffff880334a9ff08 0000000000100000 ffff8802d9a87300 0000000000000000 Oct 26 17:40:32 fsdevel7 kernel: [345346.796473] ffff880334a9fef8 ffffffff81181d21 0000000000000001 ffff8802d9a87300 Oct 26 17:40:32 fsdevel7 kernel: [345346.796475] Call Trace: Oct 26 17:40:32 fsdevel7 kernel: [345346.796476] [<ffffffff812ed4a8>] apparmor_file_permission+0x18/0x20 Oct 26 17:40:32 fsdevel7 kernel: [345346.796477] [<ffffffff812b2bac>] security_file_permission+0x2c/0xb0 Oct 26 17:40:32 fsdevel7 kernel: [345346.796479] [<ffffffff81181d21>] rw_verify_area+0x61/0xf0 Oct 26 17:40:32 fsdevel7 kernel: [345346.796482] [<ffffffff8118218e>] vfs_read+0x7e/0x180 Oct 26 17:40:32 fsdevel7 kernel: [345346.796483] [<ffffffff811822da>] sys_read+0x4a/0x90 Oct 26 17:40:32 fsdevel7 kernel: [345346.796484] [<ffffffff81689d29>] system_call_fastpath+0x16/0x1b Oct 26 17:40:32 fsdevel7 kernel: [345346.796487] Code: b3 94 ff ff 48 8b 5d e8 4c 8b 65 f0 4c 8b 6d f8 c9 c3 e8 ba d5 38 00 55 48 89 e5 66 66 66 66 90 48 8b 46 68 48 8b 8e 98 00 00 00 <48> 8b 40 68 48 85 c0 0f 84 c0 00 00 00 4c 8b 00 4d 85 c0 75 0a Oct 26 17:40:32 fsdevel7 kernel: [345346.796502] RIP [<ffffffff812ed2d4>] common_file_perm+0x14/0xf0 Oct 26 17:40:32 fsdevel7 kernel: [345346.796503] RSP <ffff880334a9fe88> Oct 26 17:40:32 fsdevel7 kernel: [345346.796504] CR2: 0000000000000068 Oct 26 17:40:32 fsdevel7 kernel: [345346.820250] ---[ end trace 1947d4cd7cbc7226 ]--- Oct 26 17:40:32 fsdevel7 kernel: [345346.820955] VFS: Close: file count is 0 + --- + ApportVersion: 2.0.1-0ubuntu14 + Architecture: amd64 + DistroRelease: Ubuntu 12.04 + Package: linux (not installed) + ProcEnviron: + TERM=xterm + SHELL=/bin/bash + PATH=(custom, user) + LANG=en_US.UTF-8 + LANGUAGE=en + Tags: precise + Uname: Linux 3.4.7 x86_64 + UnreportableReason: The running kernel is not an Ubuntu kernel + UpgradeStatus: Upgraded to precise on 2012-06-06 (142 days ago) + UserGroups: kvm sudo -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1071806 Title: NULL pointer dereference in common_file_perm+0x14 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1071806/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
