Re: oops at mount

[Stefan Behrens <sbehrens@giantdisaster.de>]

On 05/30/2013 13:17, Papp Tamas wrote:
> hi All,
>
> I'm new on the list.
>
> System:
> Distributor ID:    Ubuntu
> Description:    Ubuntu 13.04
> Release:    13.04
> Codename:    raring
>
> Linux ctu 3.8.0-19-generic #30-Ubuntu SMP Wed May 1 16:35:23 UTC 2013
> x86_64 x86_64 x86_64 GNU/Linux
>
> The symptom is the same with Saucy 3.9 kernel.
>
> ii  btrfs-tools
> 0.20~git20130524~650e656-0daily13~raring1 amd64  Checksumming Copy on
> Write Filesystem utilities
>
>
> I also tried btrfs-tools v0.19 before with no luck.
>
>
> $ btrfsck --repair /dev/sda1
> enabling repair mode
> parent transid verify failed on 430612480 wanted 81016 found 81011
> parent transid verify failed on 430612480 wanted 81016 found 81011
> parent transid verify failed on 430612480 wanted 81016 found 81011
> parent transid verify failed on 430612480 wanted 81016 found 81011
> Ignoring transid failure
> Checking filesystem on /dev/sda1
> UUID: deed1ffb-27bb-4555-b5ce-8a3c8ee5612c
> checking extents
> checking free space cache
> cache and super generation don't match, space cache will be invalidated
> checking fs roots
> checking csums
> checking root refs
> found 67570520064 bytes used err is 0
> total csum bytes: 65168792
> total tree bytes: 789745664
> total fs tree bytes: 651145216
> total extent tree bytes: 50372608
> btree space waste bytes: 192929190
> file data blocks allocated: 80764424192
>   referenced 69347667968
> Btrfs v0.20-rc1
>
>
> If I mount, I get an oops message. The machine is not completely
> freezed, but I have to reboot it to be able to use it again.
>
>
>     69.257107] btrfsck[2703]: segfault at 7ff069802710 ip
> 00007ff063ceecbd sp 00007fff9bb5db70 error 4 in
> libc-2.17.so[7ff063c6f000+1be000]
> [  480.799981] device fsid deed1ffb-27bb-4555-b5ce-8a3c8ee5612c devid 1
> transid 81010 /dev/sda1
> [  480.802507] btrfs: disk space caching is enabled
> [  480.851534] Btrfs detected SSD devices, enabling SSD mode
> [  480.863245] btrfs bad tree block start 0 413601792
> [  480.863320] btrfs bad tree block start 0 413601792
> [  480.863389] ------------[ cut here ]------------
> [  480.863426] Kernel BUG at ffffffffa03d3b6a [verbose debug info
> unavailable]
> [  480.863459] invalid opcode: 0000 [#1] SMP
> [  480.863490] Modules linked in: ip6table_filter(F) ip6_tables(F)
> xt_state(F) ipt_REJECT(F) xt_CHECKSUM(F) iptable_mangle(F) xt_tcpudp(F)
> iptable_filter(F) ipt_MASQUERADE(F) iptable_nat(F) nf_conntrack_ipv4(F)
> nf_defrag_ipv4(F) nf_nat_ipv4(F) nf_nat(F) nf_conntrack(F) ip_tables(F)
> x_tables(F) bridge(F) stp(F) llc(F) pci_stub vboxpci(OF) vboxnetadp(OF)
> vboxnetflt(OF) vboxdrv(OF) rfcomm bnep snd_hda_codec_hdmi
> snd_hda_codec_idt binfmt_misc(F) qcserial usb_wwan usbserial pata_pcmcia
> arc4(F) hid_generic coretemp kvm_intel iwldvm kvm mac80211
> ghash_clmulni_intel(F) aesni_intel(F) aes_x86_64(F) xts(F) lrw(F)
> gf128mul(F) ablk_helper(F) cryptd(F) usbhid hid joydev(F) tpm_infineon
> hp_wmi sparse_keymap uvcvideo videobuf2_vmalloc videobuf2_memops
> videobuf2_core videodev pcmcia microcode(F) btusb bluetooth psmouse(F)
> serio_raw(F) intel_ips btrfs(F) tpm_tis libcrc32c(F) zlib_deflate(F)
> sdhci_pci snd_hda_intel sdhci snd_hda_codec snd_hwdep(F) snd_pcm(F)
> firewire_ohci snd_page_alloc(F) firewire_core snd_seq_midi(F)
> snd_seq_midi_event(F) crc_itu_t(F) yenta_socket pcmcia_rsrc i915
> pcmcia_core snd_rawmidi(F) drm_kms_helper snd_seq(F) hp_accel drm
> lis3lv02d snd_seq_device(F) input_polldev snd_timer(F) wmi iwlwifi
> snd(F) video(F) mac_hid cfg80211 lpc_ich i2c_algo_bit mei e1000e(F)
> soundcore(F) lp(F) parport(F) ahci(F) libahci(F)
> [  480.864322] CPU 3
> [  480.864338] Pid: 5550, comm: mount Tainted: GF          O
> 3.8.0-19-generic #30-Ubuntu Hewlett-Packard HP EliteBook 2540p/7008
> [  480.864386] RIP: 0010:[<ffffffffa03d3b6a>]  [<ffffffffa03d3b6a>]
> btrfs_recover_log_trees+0x23a/0x390 [btrfs]
> [  480.864474] RSP: 0018:ffff88012ad41b40  EFLAGS: 00010282
> [  480.864499] RAX: 00000000fffffffb RBX: ffff88018b91c000 RCX:
> 00000001801c001b
> [  480.864531] RDX: 00000001801c001c RSI: 00000000801c001b RDI:
> ffff8801b20b3900
> [  480.864563] RBP: ffff88012ad41bf0 R08: 0000000000000000 R09:
> 0000000000000001
> [  480.864594] R10: 0000000000000000 R11: 0000000000000000 R12:
> ffff88014fc0a5a0
> [  480.864625] R13: ffff88011d2f0e40 R14: ffff88018b91a800 R15:
> ffff8801ab3ea000
> [  480.864656] FS:  00007fb531818840(0000) GS:ffff8801bbcc0000(0000)
> knlGS:0000000000000000
> [  480.864693] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [  480.864718] CR2: 00000000006a5000 CR3: 000000016800b000 CR4:
> 00000000000007e0
> [  480.864750] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> 0000000000000000
> [  480.864781] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
> 0000000000000400
> [  480.864813] Process mount (pid: 5550, threadinfo ffff88012ad40000,
> task ffff880128522e80)
> [  480.864847] Stack:
> [  480.864860]  ffff8801b0e5ce40 ffff88012ad41b98 fffffffa00000000
> ffffff84ffffffff
> [  480.864905]  fffffaffffffffff 010684ffffffffff 0106000000000000
> ff84000000000000
> [  480.864947]  faffffffffffffff 84ffffffffffffff 0000000000000106
> 0000000000000000
> [  480.864990] Call Trace:
> [  480.865019]  [<ffffffffa03d1a10>] ?
> fixup_inode_link_counts+0x150/0x150 [btrfs]
> [  480.865061]  [<ffffffffa0398a2c>] open_ctree+0x171c/0x1da0 [btrfs]
> [  480.865095]  [<ffffffff81331461>] ? disk_name+0x61/0xc0
> [  480.865126]  [<ffffffffa0371a83>] btrfs_mount+0x613/0x750 [btrfs]
> [  480.865160]  [<ffffffff81197c43>] mount_fs+0x43/0x1b0
> [  480.865187]  [<ffffffff811b2457>] ? alloc_vfsmnt+0xd7/0x1b0
> [  480.865214]  [<ffffffff811b25e4>] vfs_kern_mount+0x74/0x110
> [  480.865240]  [<ffffffff811b495f>] do_mount+0x21f/0xac0
> [  480.865270]  [<ffffffff8114a46b>] ? strndup_user+0x5b/0x80
> [  480.865296]  [<ffffffff811b528e>] sys_mount+0x8e/0xe0
> [  480.865323]  [<ffffffff816d37dd>] system_call_fastpath+0x1a/0x1f
> [  480.865352] Code: ef e8 bb 9e ff ff 85 c0 75 21 83 7d b8 02 0f 85 ad
> fe ff ff 48 8b 75 c0 4c 89 e2 4c 89 ef e8 5e dd ff ff 85 c0 0f 84 96 fe
> ff ff <0f> 0b 0f 1f 40 00 4c 89 e7 e8 b8 13 fa ff 44 8b 5d b4 45 85 db
> [  480.865680] RIP  [<ffffffffa03d3b6a>]
> btrfs_recover_log_trees+0x23a/0x390 [btrfs]
> [  480.865743]  RSP <ffff88012ad41b40>
> [  481.887687] ---[ end trace 6d9b536c1234c5bc ]---
>
>
>
> The storage is an Intel X18-M/X25-M/X25-V G2 SSD and a similar error was
> there a couple of weeks ago.
> It's a root partition with 3 subvolumes. Now I use a secondary system on
> the drive.
>
> ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE
> UPDATED  WHEN_FAILED RAW_VALUE
>    3 Spin_Up_Time            0x0020   100   100   000    Old_age
> Offline      -       0
>    4 Start_Stop_Count        0x0030   100   100   000    Old_age
> Offline      -       0
>    5 Reallocated_Sector_Ct   0x0032   100   100   000    Old_age
> Always       -       4
>    9 Power_On_Hours          0x0032   100   100   000    Old_age
> Always       -       9718
>   12 Power_Cycle_Count       0x0032   100   100   000    Old_age
> Always       -       3532
> 192 Unsafe_Shutdown_Count   0x0032   100   100   000    Old_age
> Always       -       486
> 225 Host_Writes_32MiB       0x0030   200   200   000    Old_age
> Offline      -       172848
> 226 Workld_Media_Wear_Indic 0x0032   100   100   000    Old_age
> Always       -       1823
> 227 Workld_Host_Reads_Perc  0x0032   100   100   000    Old_age
> Always       -       4
> 228 Workload_Minutes        0x0032   100   100   000    Old_age
> Always       -       1156268736
> 232 Available_Reservd_Space 0x0033   099   099   010    Pre-fail
> Always       -       0
> 233 Media_Wearout_Indicator 0x0032   098   098   000    Old_age
> Always       -       0
> 184 End-to-End_Error        0x0033   100   100   099    Pre-fail
> Always       -       0
>
> SMART Error Log Version: 1
> No Errors Logged
>
> SMART Self-test log structure revision number 1
> Num  Test_Description    Status                  Remaining
> LifeTime(hours)  LBA_of_first_error
> # 1  Reserved (0x80)     Completed without error       00%
> 8925         -
> # 2  Reserved (0x18)     Completed without error       00%
> 8921         -
> # 3  Vendor (0xb8)       Completed without error       00%
> 8920         -
> # 4  Reserved (0x30)     Completed without error       00%
> 8065         -
> # 5  Vendor (0xd0)       Completed without error       00%
> 3530         -
> # 6  Offline             Completed without error       00%
> 38         -
>
> Note: selective self-test log revision number (0) not 1 implies that no
> selective self-test has ever been run
> SMART Selective self-test log data structure revision number 0
> Note: revision number not 1 implies that no selective self-test has ever
> been run
>   SPAN  MIN_LBA  MAX_LBA  CURRENT_TEST_STATUS
>      1        0        0  Not_testing
>      2        0        0  Not_testing
>      3        0        0  Not_testing
>      4        0        0  Not_testing
>      5        0        0  Not_testing
>
>
> Is it the SSD or rather a bug?

Try the procedures that are described in the Wiki:

https://btrfs.wiki.kernel.org/index.php/Problem_FAQ#I_can.27t_mount_my_filesystem.2C_and_I_get_a_kernel_oops.21

https://btrfs.wiki.kernel.org/index.php/Problem_FAQ#My_filesystem_won.27t_mount_and_none_of_the_above_helped._Is_there_any_hope_for_my_data.3F

And if the Wiki recommends to update the kernel and the btrfs progs, 
make sure to follow the advice :)