Confirmed on a daily-live usb system. Running fuser on any directory or file of the live-fs causes a segmentation fault of fuser and the kernel BUG message.
See also https://bugzilla.redhat.com/show_bug.cgi?id=675934 https://lkml.org/lkml/2011/2/11/1 linux-image-generic 2.6.38.3.17 linux-image-2.6.38-3-generic 2.6.38-3.30 ubuntu@ubuntu:~$ fuser /etc Segmentation fault ubuntu@ubuntu:~$ mount aufs on / type aufs (rw) none on /proc type proc (rw,noexec,nosuid,nodev) none on /sys type sysfs (rw,noexec,nosuid,nodev) fusectl on /sys/fs/fuse/connections type fusectl (rw) none on /dev type devtmpfs (rw,mode=0755) none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) /dev/sdb1 on /cdrom type vfat (ro,noatime,fmask=0022,dmask=0022,codepage=cp437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro) /dev/loop0 on /rofs type squashfs (ro,noatime) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) none on /dev/shm type tmpfs (rw,nosuid,nodev) tmpfs on /tmp type tmpfs (rw,nosuid,nodev) none on /var/run type tmpfs (rw,nosuid,mode=0755) none on /var/lock type tmpfs (rw,noexec,nosuid,nodev) binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev) gvfs-fuse-daemon on /home/ubuntu/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=ubuntu) [ 970.160390] ------------[ cut here ]------------ [ 970.161808] kernel BUG at /build/buildd/linux-2.6.38/fs/namei.c:406! [ 970.163227] invalid opcode: 0000 [#11] SMP [ 970.164641] last sysfs file: /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map [ 970.166117] CPU 0 [ 970.166127] Modules linked in: parport_pc ppdev rfcomm lp parport dm_crypt sco bnep l2cap binfmt_misc btusb bluetooth snd_hda_codec_hdmi snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_pcm joydev arc4 snd_seq_midi snd_rawmidi snd_seq_midi_event iwlagn snd_seq snd_timer snd_seq_device iwlcore uvcvideo dell_wmi mac80211 dell_wmi_aio videodev sparse_keymap v4l2_compat_ioctl32 dell_laptop snd dcdbas psmouse cfg80211 soundcore serio_raw snd_page_alloc squashfs aufs nls_iso8859_1 nls_cp437 vfat fat dm_raid45 xor btrfs zlib_deflate libcrc32c usb_storage usbhid hid uas i915 drm_kms_helper firewire_ohci ahci libahci e1000e drm i2c_algo_bit video sdhci_pci sdhci firewire_core crc_itu_t [ 970.170016] [ 970.170016] Pid: 4350, comm: fuser Tainted: G D 2.6.38-3-generic #30-Ubuntu /Latitude E6400 [ 970.170016] RIP: 0010:[<ffffffff8116f707>] [<ffffffff8116f707>] nameidata_drop_rcu+0x127/0x130 [ 970.170016] RSP: 0018:ffff8800c8181c68 EFLAGS: 00010246 [ 970.170016] RAX: ffff880094c416c0 RBX: ffff8800c8181dc8 RCX: ffff8800cd8ede40 [ 970.170016] RDX: 0000000000000001 RSI: 0000000000000002 RDI: ffff8800c8181dc8 [ 970.170016] RBP: ffff8800c8181ca8 R08: 0000000000000000 R09: 0000000000000000 [ 970.170016] R10: 0000000000000001 R11: 0000000000000246 R12: ffff8800cd89a300 [ 970.170016] R13: ffff8800caae6780 R14: ffff8800c8181d28 R15: ffff880094c416c0 [ 970.170016] FS: 00007fad7e8f3720(0000) GS:ffff8800dce00000(0000) knlGS:0000000000000000 [ 970.170016] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 970.170016] CR2: 00000000015c33a8 CR3: 00000000ad952000 CR4: 00000000000006f0 [ 970.170016] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 970.170016] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 970.170016] Process fuser (pid: 4350, threadinfo ffff8800c8180000, task ffff880094c416c0) [ 970.170016] Stack: [ 970.170016] ffff8800c8181d28 ffff880094c416c0 ffff8800c8181ca8 ffff8800cd89a300 [ 970.170016] ffff8800c8181dc8 0000000000000000 ffff8800c8181d28 ffff880094c416c0 [ 970.170016] ffff8800c8181cc8 ffffffff8116fcc5 ffff8800c8181dc8 0000000000000000 [ 970.170016] Call Trace: [ 970.170016] [<ffffffff8116fcc5>] force_reval_path.clone.16+0x55/0x70 [ 970.170016] [<ffffffff81171172>] link_path_walk+0xac2/0xba0 [ 970.170016] [<ffffffff8111743d>] ? lru_cache_add_lru+0x2d/0x50 [ 970.170016] [<ffffffff811391fd>] ? page_add_new_anon_rmap+0x8d/0xa0 [ 970.170016] [<ffffffff8117154b>] do_path_lookup+0x5b/0x160 [ 970.170016] [<ffffffff81171a77>] user_path_at+0x57/0xa0 [ 970.170016] [<ffffffffa027fd29>] ? au_refresh_iattr+0xd9/0xf0 [aufs] [ 970.170016] [<ffffffff81167d98>] ? cp_new_stat+0xf8/0x110 [ 970.170016] [<ffffffff81168059>] vfs_fstatat+0x39/0x70 [ 970.218277] [<ffffffff811680cb>] vfs_stat+0x1b/0x20 [ 970.218277] [<ffffffff8116830a>] sys_newstat+0x1a/0x40 [ 970.218277] [<ffffffff8100c002>] system_call_fastpath+0x16/0x1b [ 970.218277] Code: c3 4c 89 f7 e8 1b 95 ec ff 66 90 48 8b 43 20 0f 1f 44 00 00 48 85 c0 bb f6 ff ff ff 74 cb 49 8d 7d 04 e8 fd 94 ec ff 66 90 eb be <0f> 0b 0f 0b 0f 0b 0f 1f 00 55 48 89 e5 48 83 ec 50 48 89 5d d8 [ 970.218277] RIP [<ffffffff8116f707>] nameidata_drop_rcu+0x127/0x130 [ 970.218277] RSP <ffff8800c8181c68> [ 970.219000] ---[ end trace 2be6bc47e8681441 ]--- ** Bug watch added: Red Hat Bugzilla #675934 https://bugzilla.redhat.com/show_bug.cgi?id=675934 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/713891 Title: 2.6.38 kernel bug at namei.c:406 invalid opcode 0000 SMP -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
