Hello, I got a kernel bug error, my guess from BTRFS. Here is the report, Oct 22 20:44:43 localhost kernel: [25554.947970] BUG: unable to handle kernel NULL pointer dereference at 0000000000000030 Oct 22 20:44:43 localhost kernel: [25554.948002] IP: [<ffffffffa01ab027>] btrfs_print_leaf+0x37/0x880 [btrfs] Oct 22 20:44:43 localhost kernel: [25554.948037] PGD bfa44067 PUD bfa43067 PMD 0 Oct 22 20:44:43 localhost kernel: [25554.948052] Oops: 0000 [#1] PREEMPT SMP Oct 22 20:44:43 localhost kernel: [25554.948066] CPU 1 Oct 22 20:44:43 localhost kernel: [25554.948072] Modules linked in: nls_cp437 vfat fat ipv6 loop fuse hid_apple usbhid hid uvcvideo videodev media v4l2_compat_ioctl32 adt7475 hwmon_vid evdev nouveau snd_emu10k1 snd_rawmidi snd_intel8x0 ttm drm_kms_helper sg snd_ac97_codec snd_seq_device firewire_ohci drm snd_util_mem ac97_bus snd_pcm snd_hwdep edac_core k8temp psmouse firewire_core emu10k1_gp snd_timer edac_mce_amd pcspkr snd i2c_algo_bit gameport mxm_wmi wmi crc_itu_t serio_raw soundcore video snd_page_alloc fan i2c_nforce2 thermal i2c_core floppy processor button uas usb_storage forcedeth btrfs zlib_deflate crc32c libcrc32c ext4 jbd2 crc16 ext3 jbd mbcache ohci_hcd ehci_hcd usbcore sr_mod sd_mod cdrom sata_nv pata_amd libata scsi_mod Oct 22 20:44:43 localhost kernel: [25554.948321] Oct 22 20:44:43 localhost kernel: [25554.948327] Pid: 4834, comm: firefox Not tainted 3.0-ARCH #1 /LP UT NF4 Expert Oct 22 20:44:43 localhost kernel: [25554.948522] RIP: 0010:[<ffffffffa01ab027>] [<ffffffffa01ab027>] btrfs_print_leaf+0x37/0x880 [btrfs] Oct 22 20:44:43 localhost kernel: [25554.948547] RSP: 0018:ffff8800b341fb38 EFLAGS: 00010282 Oct 22 20:44:43 localhost kernel: [25554.948557] RAX: 00000000ffffffe4 RBX: 0000000000000000 RCX: ffff8800b341ffd8 Oct 22 20:44:43 localhost kernel: [25554.948570] RDX: ffff8800b341e000 RSI: 0000000000000000 RDI: ffff880135075000 Oct 22 20:44:43 localhost kernel: [25554.948582] RBP: ffff8800b341fbc8 R08: ffffffffffffffff R09: 0000000000000000 Oct 22 20:44:43 localhost kernel: [25554.948595] R10: 00000000ffffffe4 R11: 0000000000000000 R12: 0000000000000005 Oct 22 20:44:43 localhost kernel: [25554.948607] R13: 0000000005114000 R14: 00000000ffffffe4 R15: 0000000000001000 Oct 22 20:44:43 localhost kernel: [25554.948621] FS: 00007f1c5a2f4720(0000) GS:ffff88013fd00000(0000) knlGS:00000000f68227f0 Oct 22 20:44:43 localhost kernel: [25554.948634] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Oct 22 20:44:43 localhost kernel: [25554.948645] CR2: 0000000000000030 CR3: 00000000bfa41000 CR4: 00000000000006e0 Oct 22 20:44:43 localhost kernel: [25554.948658] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Oct 22 20:44:43 localhost kernel: [25554.948670] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Oct 22 20:44:43 localhost kernel: [25554.948683] Process firefox (pid: 4834, threadinfo ffff8800b341e000, task ffff88012d817300) Oct 22 20:44:43 localhost kernel: [25554.948701] Stack: Oct 22 20:44:43 localhost kernel: [25554.948708] 0000000000002000 0000000000001000 ffff8800b341fc70 0000000005114000 Oct 22 20:44:43 localhost kernel: [25554.948730] 0000000000000282 ffffffff81142c03 ffff880135075000 0000000000000090 Oct 22 20:44:43 localhost kernel: [25554.948755] 0000000000000090 0000805037106510 a800000000051140 0000000000001000 Oct 22 20:44:43 localhost kernel: [25554.948777] Call Trace: Oct 22 20:44:43 localhost kernel: [25554.948787] [<ffffffff81142c03>] ? kmem_cache_alloc+0x133/0x160 Oct 22 20:44:43 localhost kernel: [25554.948807] [<ffffffffa01a32df>] __btrfs_free_extent+0x61f/0x6d0 [btrfs] Oct 22 20:44:43 localhost kernel: [25554.948827] [<ffffffffa01a5b6d>] ? run_clustered_refs+0x11d/0x830 [btrfs] Oct 22 20:44:43 localhost kernel: [25554.948847] [<ffffffffa01a5dd9>] run_clustered_refs+0x389/0x830 [btrfs] Oct 22 20:44:43 localhost kernel: [25554.948867] [<ffffffffa01a6348>] btrfs_run_delayed_refs+0xc8/0x220 [btrfs] Oct 22 20:44:43 localhost kernel: [25554.948881] [<ffffffff813f29ce>] ? mutex_unlock+0xe/0x10 Oct 22 20:44:43 localhost kernel: [25554.948900] [<ffffffffa01b8381>] btrfs_commit_transaction+0x81/0x8a0 [btrfs] Oct 22 20:44:43 localhost kernel: [25554.948915] [<ffffffff8107f790>] ? abort_exclusive_wait+0xb0/0xb0 Oct 22 20:44:43 localhost kernel: [25554.948928] [<ffffffff8116e6be>] ? dput+0x10e/0x1a0 Oct 22 20:44:43 localhost kernel: [25554.948948] [<ffffffffa01c6ac4>] btrfs_sync_file+0x194/0x1e0 [btrfs] Oct 22 20:44:43 localhost kernel: [25554.948961] [<ffffffff8118321f>] vfs_fsync_range+0x5f/0xa0 Oct 22 20:44:43 localhost kernel: [25554.948973] [<ffffffff811832cc>] vfs_fsync+0x1c/0x20 Oct 22 20:44:43 localhost kernel: [25554.948984] [<ffffffff811835e3>] sys_fsync+0x33/0x50 Oct 22 20:44:43 localhost kernel: [25554.948995] [<ffffffff813f4c42>] system_call_fastpath+0x16/0x1b Oct 22 20:44:43 localhost kernel: [25554.949008] Code: 89 5d d8 4c 89 65 e0 4c 89 6d e8 4c 89 75 f0 4c 89 7d f8 66 66 66 66 90 65 48 8b 0c 25 48 cd 00 00 48 8d 91 28 e0 ff ff 48 89 f3 Oct 22 20:44:43 localhost kernel: [25554.949269] RIP [<ffffffffa01ab027>] btrfs_print_leaf+0x37/0x880 [btrfs] Oct 22 20:44:43 localhost kernel: [25554.949292] RSP <ffff8800b341fb38> Oct 22 20:44:43 localhost kernel: [25554.949300] CR2: 0000000000000030 Oct 22 20:44:43 localhost kernel: [25554.957960] ---[ end trace e3b54094ec35959e ]--- Anyone stumble upon it? After this a couple of BUG dumps followed, check this pastebin http://paste.pocoo.org/show/496620/ I am a on a Arch system with BTRFS root filesystem $ pacman -Si linux Repository : core Name : linux Version : 3.0.7-1 URL : http://www.kernel.org/ Licenses : GPL2 Groups : base Provides : kernel26 Depends On : coreutils linux-firmware module-init-tools>=3.16 mkinitcpio>=0.7 Optional Deps : crda: to set the correct wireless channels of your country Conflicts With : kernel26 Replaces : kernel26 Download Size : 38639.75 K Installed Size : 57060.00 K Packager : Tobias Powalowski <tpowa@xxxxxxxxxxxxx> Architecture : x86_64 Build Date : Wed 19 Oct 2011 09:31:33 AM BST MD5 Sum : 1fa49419794d5b4c04fdd0b275f6649b Description : The Linux Kernel and modules btrfs-tools : Btrfs v0.19-85-gd4bb086 I am on an SSD drive. My mounts are like: /dev/sda2 on / type btrfs (rw,noatime,ssd) /dev/sda3 on /home type btrfs (rw,noatime,ssd) Regards Leonidas -- Caution: breathing may be hazardous to your health. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
