[ 585.410148] NILFS: INFO: recovery required for readonly filesystem. [ 585.410161] NILFS: write access will be enabled during recovery. [ 585.515146] ------------[ cut here ]------------ [ 585.515156] kernel BUG at /root/nilfs/nilfs-2.0.5/fs/btree.c:503! [ 585.515162] invalid opcode: 0000 [1] SMP [ 585.515169] CPU 1 [ 585.515174] Modules linked in: nilfs2 af_packet binfmt_misc rfcomm bridge stp bnep sco l2cap bluetooth vboxdrv ppdev ipv6 acpi_cpufreq cpufreq_conservative cpufreq_stats cpufreq_powersave cpufreq_userspace cpufreq_ondemand freq_table container sbs sbshc pci_slot iptable_filter ip_tables x_tables ext2 aes_x86_64 aes_generic cbc dm_crypt dm_mod sbp2 parport_pc lp parport loop snd_hda_intel snd_pcm_oss arc4 snd_mixer_oss ecb crypto_blkcipher snd_pcm iwlagn iwlcore snd_seq_dummy rfkill snd_seq_oss mac80211 joydev sdhci_pci snd_seq_midi uvcvideo snd_rawmidi cfg80211 acer_wmi compat_ioctl32 serio_raw sdhci mmc_core videodev v4l1_compat pcspkr evdev psmouse led_class ricoh_mmc nvidia(P) snd_seq_midi_event i2c_core snd_seq snd_timer snd_seq_device iTCO_wdt snd iTCO_vendor_support soundcore wmi video output battery ac button snd_page_alloc intel_agp shpchp pci_hotplug ext3 jbd mbcache sr_mod cdrom sd_mod crc_t10dif sg ata_piix pata_acpi usbhid hid ohci1394 ieee1394 ata_generic ahci libata scsi_mod dock tg3 libphy ehci_hcd uhci_hcd usbcore raid10 raid456 async_xor async_memcpy async_tx xor raid1 raid0 multipath linear md_mod thermal processor fan fuse vesafb fbcon tileblit font bitblit softcursor [ 585.515398] Pid: 7993, comm: mount.nilfs2 Tainted: P 2.6.27-11-generic #1 [ 585.515404] RIP: 0010:[] [] nilfs_btree_do_lookup+0x214/0x220 [nilfs2] [ 585.515435] RSP: 0018:ffff8800538535b8 EFLAGS: 00010212 [ 585.515440] RAX: 0000000000000040 RBX: ffff8800565b0000 RCX: 00000000c0000100 [ 585.515445] RDX: 0000000000000002 RSI: ffff880053853518 RDI: ffff880001002680 [ 585.515450] RBP: ffff880053853618 R08: 0000000000000000 R09: 00000000ffffffff [ 585.515455] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800566e0800 [ 585.515460] R13: ffff880048838018 R14: 0000000000000001 R15: 0000000000000000 [ 585.515466] FS: 00007f840e7736e0(0000) GS:ffff88007f802880(0000) knlGS:0000000000000000 [ 585.515472] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 585.515477] CR2: 00007fff1679b000 CR3: 000000004985a000 CR4: 00000000000006e0 [ 585.515483] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 585.515488] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 585.515494] Process mount.nilfs2 (pid: 7993, threadinfo ffff880053852000, task ffff88005660d9c0) [ 585.515499] Stack: 0000000000000000 00000002803139fc ffff880053853638 0000000000001471 [ 585.515511] 0000000200000000 0000000000000246 00000000538535f8 ffff8800566e0700 [ 585.515521] ffff880048838018 00000000fffffff4 0000000000000001 ffff8800538536d8 [ 585.515530] Call Trace: [ 585.515552] [] nilfs_btree_lookup+0x6e/0xb0 [nilfs2] [ 585.515573] [] nilfs_bmap_lookup_at_level+0x49/0xa0 [nilfs2] [ 585.515594] [] nilfs_bmap_lookup+0x1f/0x40 [nilfs2] [ 585.515613] [] nilfs_mdt_submit_block+0xe6/0x1a0 [nilfs2] [ 585.515633] [] nilfs_mdt_read_block+0x2b/0x150 [nilfs2] [ 585.515653] [] nilfs_mdt_get_block+0x6b/0x2b0 [nilfs2] [ 585.515664] [] ? alloc_buffer_head+0x4b/0x60 [ 585.515670] [] ? set_bh_page+0x9/0x50 [ 585.515679] [] ? _spin_lock+0xe/0x20 [ 585.515702] [] nilfs_palloc_get_entry_block+0x62/0x70 [nilfs2] [ 585.515725] [] nilfs_dat_translate+0x31/0xd0 [nilfs2] [ 585.515746] [] nilfs_btnode_submit_block+0x16f/0x260 [nilfs2] [ 585.515766] [] nilfs_btnode_get+0x14/0x80 [nilfs2] [ 585.515786] [] nilfs_bmap_get_block+0x1d/0x20 [nilfs2] [ 585.515806] [] nilfs_btree_do_lookup+0x12f/0x220 [nilfs2] [ 585.515826] [] nilfs_btree_lookup+0x6e/0xb0 [nilfs2] [ 585.515846] [] nilfs_bmap_lookup_at_level+0x49/0xa0 [nilfs2] [ 585.515866] [] nilfs_bmap_lookup+0x1f/0x40 [nilfs2] [ 585.515885] [] nilfs_mdt_submit_block+0xe6/0x1a0 [nilfs2] [ 585.515905] [] nilfs_mdt_read_block+0x2b/0x150 [nilfs2] [ 585.515924] [] nilfs_mdt_get_block+0x6b/0x2b0 [nilfs2] [ 585.515932] [] ? _spin_lock_irq+0x16/0x20 [ 585.515938] [] ? __down_write_nested+0xc4/0xd0 [ 585.515961] [] nilfs_cpfile_get_checkpoint+0x68/0x210 [nilfs2] [ 585.515982] [] ? nilfs_mdt_set_entry_size+0x9/0x40 [nilfs2] [ 585.516002] [] nilfs_attach_checkpoint+0xc8/0x1b0 [nilfs2] [ 585.516020] [] nilfs_get_sb+0x430/0x700 [nilfs2] [ 585.516029] [] ? kstrdup+0x5b/0x80 [ 585.516037] [] ? alloc_pages_current+0xad/0x110 [ 585.516050] [] vfs_kern_mount+0x81/0x180 [ 585.516060] [] do_kern_mount+0x53/0x110 [ 585.516067] [] do_new_mount+0x9c/0xd0 [ 585.516073] [] do_mount+0x245/0x270 [ 585.516081] [] ? alloc_pages_current+0xad/0x110 [ 585.516089] [] ? __get_free_pages+0x1d/0x50 [ 585.516096] [] sys_mount+0xc0/0xf0 [ 585.516105] [] system_call_fastpath+0x16/0x1b [ 585.516109] [ 585.516112] [ 585.516114] Code: c0 0f 84 4a fe ff ff 31 c0 48 83 7d b0 00 0f 84 42 fe ff ff 48 8b 45 b0 48 89 30 31 c0 e9 34 fe ff ff 0f 1f 44 00 00 0f 0b eb fe <0f> 0b eb fe 0f 1f 84 00 00 00 00 00 55 48 89 e5 48 83 ec 40 48 [ 585.516199] RIP [] nilfs_btree_do_lookup+0x214/0x220 [nilfs2] [ 585.516223] RSP [ 585.516245] ---[ end trace cc281b2a8a93bbfa ]---