I can reproduce this problem and I have pinpointed the problem. Working on creating a patch and a test build.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1587475 Title: Kernel panic on btrfs mount and ls Status in linux package in Ubuntu: Confirmed Status in linux source package in Xenial: Confirmed Bug description: Kernel panic happens after mount and ls specific btrfs image Way to reproduce: 1. download and unpack btrfs image from tar(sparse file)(tar -Sxf img.tar) 2. mount btrfs (sudo mount -t btrfs -o rw,noatime,compress=no,commit=5 71bb49cf-26f1-484a-832c-e966f43adca9.img broken) 3. list files in mount point (ls -al broken) the system down to kernel panic with log above (looks like 3.19.x and 4.2.x not affected, only 4.4.x) dmesg log: May 31 13:02:21 fs-new kernel: [ 694.744630] BTRFS error (device loop0): parent transid verify failed on 30425088 wanted 120 found 119 May 31 13:02:21 fs-new kernel: [ 694.747077] BTRFS error (device loop0): parent transid verify failed on 30425088 wanted 120 found 119 May 31 13:02:21 fs-new kernel: [ 694.747128] ------------[ cut here ]------------ May 31 13:02:21 fs-new kernel: [ 694.747135] WARNING: CPU: 0 PID: 13795 at /build/linux-lts-xenial-7RlTta/linux-lts-xenial-4.4.0/lib/idr.c:1051 ida_remove+0xfa/0x130() May 31 13:02:21 fs-new kernel: [ 694.747136] ida_remove called for id=47 which is not allocated. May 31 13:02:21 fs-new kernel: [ 694.747137] Modules linked in: ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c nfsv3 vboxsf xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack zram lz4_compress xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables autofs4 ppdev vboxvideo ttm crct10dif_pclmul crc32_pclmul drm_kms_helper drm aesni_intel aes_x86_64 lrw input_leds gf128mul nfsd glue_helper ablk_helper cryptd auth_rpcgss serio_raw nfs_acl nfs fb_sys_fops syscopyarea lockd sysfillrect grace 8250_fintek parport_pc sysimgblt vboxguest i2c_piix4 sunrpc video mac_hid fscache lp parport zfs(POE) zunicode(POE) zcommon(POE) znvpair(POE) spl(OE) zavl(POE) btrfs xor raid6_pq psmouse e1000 fjes pata_acpi May 31 13:02:21 fs-new kernel: [ 694.747182] CPU: 0 PID: 13795 Comm: ls Tainted: P OE 4.4.0-22-generic #40~14.04.1-Ubuntu May 31 13:02:21 fs-new kernel: [ 694.747183] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 May 31 13:02:21 fs-new kernel: [ 694.747185] 0000000000000000 ffff8800024e7a88 ffffffff813cde6c ffff8800024e7ad0 May 31 13:02:21 fs-new kernel: [ 694.747187] ffffffff81af5298 ffff8800024e7ac0 ffffffff8107d856 0000000000000000 May 31 13:02:21 fs-new kernel: [ 694.747189] ffffffff81fce200 ffff88003c827a00 ffff88003616e068 0000000000000001 May 31 13:02:21 fs-new kernel: [ 694.747191] Call Trace: May 31 13:02:21 fs-new kernel: [ 694.747195] [<ffffffff813cde6c>] dump_stack+0x63/0x87 May 31 13:02:21 fs-new kernel: [ 694.747199] [<ffffffff8107d856>] warn_slowpath_common+0x86/0xc0 May 31 13:02:21 fs-new kernel: [ 694.747201] [<ffffffff8107d8dc>] warn_slowpath_fmt+0x4c/0x50 May 31 13:02:21 fs-new kernel: [ 694.747214] [<ffffffff811a337a>] ? free_percpu+0xba/0x180 May 31 13:02:21 fs-new kernel: [ 694.747217] [<ffffffff813cef0a>] ida_remove+0xfa/0x130 May 31 13:02:21 fs-new kernel: [ 694.747220] [<ffffffff811fff4c>] free_anon_bdev+0x2c/0x50 May 31 13:02:21 fs-new kernel: [ 694.747239] [<ffffffffc00f234e>] free_fs_root+0xbe/0xe0 [btrfs] May 31 13:02:21 fs-new kernel: [ 694.747251] [<ffffffffc00f3b96>] btrfs_get_fs_root+0x216/0x250 [btrfs] May 31 13:02:21 fs-new kernel: [ 694.747264] [<ffffffffc011d92d>] ? memcmp_extent_buffer+0xbd/0x120 [btrfs] May 31 13:02:21 fs-new kernel: [ 694.747277] [<ffffffffc0106e4c>] btrfs_lookup_dentry+0x28c/0x4c0 [btrfs] May 31 13:02:21 fs-new kernel: [ 694.747288] [<ffffffffc0107092>] btrfs_lookup+0x12/0x40 [btrfs] May 31 13:02:21 fs-new kernel: [ 694.747291] [<ffffffff8120716d>] lookup_real+0x1d/0x50 May 31 13:02:21 fs-new kernel: [ 694.747293] [<ffffffff81207523>] __lookup_hash+0x33/0x40 May 31 13:02:21 fs-new kernel: [ 694.747295] [<ffffffff81209a47>] walk_component+0x177/0x280 May 31 13:02:21 fs-new kernel: [ 694.747297] [<ffffffff8125c0d9>] ? posix_acl_xattr_get+0x49/0xb0 May 31 13:02:21 fs-new kernel: [ 694.747299] [<ffffffff8120ae80>] path_lookupat+0x60/0x110 May 31 13:02:21 fs-new kernel: [ 694.747301] [<ffffffff8120ca4c>] filename_lookup+0x9c/0x150 May 31 13:02:21 fs-new kernel: [ 694.747304] [<ffffffff811dbc2f>] ? kmem_cache_alloc+0x19f/0x200 May 31 13:02:21 fs-new kernel: [ 694.747306] [<ffffffff8120c68f>] ? getname_flags+0x4f/0x1f0 May 31 13:02:21 fs-new kernel: [ 694.747308] [<ffffffff8120cbb6>] user_path_at_empty+0x36/0x40 May 31 13:02:21 fs-new kernel: [ 694.747310] [<ffffffff81202523>] vfs_fstatat+0x53/0xa0 May 31 13:02:21 fs-new kernel: [ 694.747312] [<ffffffff812029e2>] SYSC_newlstat+0x22/0x40 May 31 13:02:21 fs-new kernel: [ 694.747315] [<ffffffff8121cf04>] ? mntput+0x24/0x40 May 31 13:02:21 fs-new kernel: [ 694.747317] [<ffffffff812071be>] ? path_put+0x1e/0x30 May 31 13:02:21 fs-new kernel: [ 694.747318] [<ffffffff812220e2>] ? path_getxattr+0x62/0x90 May 31 13:02:21 fs-new kernel: [ 694.747321] [<ffffffff81202bfe>] SyS_newlstat+0xe/0x10 May 31 13:02:21 fs-new kernel: [ 694.747324] [<ffffffff817efcf6>] entry_SYSCALL_64_fastpath+0x16/0x75 May 31 13:02:21 fs-new kernel: [ 694.747326] ---[ end trace 5c7309d2219a269a ]--- May 31 13:02:21 fs-new kernel: [ 694.761474] Modules linked in: ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c nfsv3 vboxsf xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack zram lz4_compress xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables autofs4 ppdev vboxvideo ttm crct10dif_pclmul crc32_pclmul drm_kms_helper drm aesni_intel aes_x86_64 lrw input_leds gf128mul nfsd glue_helper ablk_helper cryptd auth_rpcgss serio_raw nfs_acl nfs fb_sys_fops syscopyarea lockd sysfillrect grace 8250_fintek parport_pc sysimgblt vboxguest i2c_piix4 sunrpc video mac_hid fscache lp parport zfs(POE) zunicode(POE) zcommon(POE) znvpair(POE) spl(OE) zavl(POE) btrfs xor raid6_pq psmouse e1000 fjes pata_acpi May 31 13:02:21 fs-new kernel: [ 694.763145] CPU: 0 PID: 13581 Comm: zsh Tainted: P W OE 4.4.0-22-generic #40~14.04.1-Ubuntu May 31 13:02:21 fs-new kernel: [ 694.763207] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 May 31 13:02:21 fs-new kernel: [ 694.763261] task: ffff880038485280 ti: ffff88001c104000 task.ti: ffff88001c104000 May 31 13:02:21 fs-new kernel: [ 694.763307] RIP: 0010:[<ffffffff811dbb09>] [<ffffffff811dbb09>] kmem_cache_alloc+0x79/0x200 May 31 13:02:21 fs-new kernel: [ 694.763654] RSP: 0018:ffff88001c107d38 EFLAGS: 00010282 May 31 13:02:21 fs-new kernel: [ 694.763689] RAX: 0000000000000000 RBX: 0000000002000200 RCX: 00000000005306fe May 31 13:02:21 fs-new kernel: [ 694.763733] RDX: 00000000005306fd RSI: 0000000002000200 RDI: ffff88003c801b00 May 31 13:02:21 fs-new kernel: [ 694.763777] RBP: ffff88001c107d68 R08: 0000000000019f80 R09: ffffffff811bda0d May 31 13:02:21 fs-new kernel: [ 694.763820] R10: 0000000000000000 R11: ffffffff81ac9018 R12: 0000000002000200 May 31 13:02:21 fs-new kernel: [ 694.763862] R13: 53f000ff53f000ff R14: ffff88003c801b00 R15: ffff88003c801b00 May 31 13:02:21 fs-new kernel: [ 694.763908] FS: 00007f73347c4740(0000) GS:ffff88003e400000(0000) knlGS:0000000000000000 May 31 13:02:21 fs-new kernel: [ 694.763958] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b May 31 13:02:21 fs-new kernel: [ 694.763993] CR2: 0000000000ec7ba8 CR3: 0000000002445000 CR4: 00000000000406f0 May 31 13:02:21 fs-new kernel: [ 694.764043] Stack: May 31 13:02:21 fs-new kernel: [ 694.764059] ffffffff81fc7220 ffff88001c0807d0 ffff880002440380 0000000000000000 May 31 13:02:21 fs-new kernel: [ 694.764113] 0000000000000001 ffff880035ea3a98 ffff88001c107dc0 ffffffff811bda0d May 31 13:02:21 fs-new kernel: [ 694.764166] ffff88000241e4b0 ffff88001c080848 ffff88000241e528 0000000000000000 May 31 13:02:21 fs-new kernel: [ 694.764219] Call Trace: May 31 13:02:21 fs-new kernel: [ 694.764243] [<ffffffff811bda0d>] anon_vma_clone+0x6d/0x1f0 May 31 13:02:21 fs-new kernel: [ 694.764280] [<ffffffff811bdbc0>] anon_vma_fork+0x30/0x130 May 31 13:02:21 fs-new kernel: [ 694.766727] [<ffffffff8107bcf6>] copy_process+0xe36/0x1c60 May 31 13:02:21 fs-new kernel: [ 694.767979] [<ffffffff8107cc92>] _do_fork+0x82/0x310 May 31 13:02:21 fs-new kernel: [ 694.771206] [<ffffffff8108c931>] ? sigprocmask+0x51/0x80 May 31 13:02:21 fs-new kernel: [ 694.774372] [<ffffffff8107cfc9>] SyS_clone+0x19/0x20 May 31 13:02:21 fs-new kernel: [ 694.775874] [<ffffffff817efcf6>] entry_SYSCALL_64_fastpath+0x16/0x75 May 31 13:02:21 fs-new kernel: [ 694.776895] Code: 4c 03 05 83 e6 e2 7e 4d 8b 28 49 8b 40 10 4d 85 ed 0f 84 43 01 00 00 48 85 c0 0f 84 3a 01 00 00 49 63 46 20 48 8d 4a 01 4d 8b 06 <49> 8b 5c 05 00 4c 89 e8 65 49 0f c7 08 0f 94 c0 84 c0 74 b8 49 May 31 13:02:21 fs-new kernel: [ 694.779447] RIP [<ffffffff811dbb09>] kmem_cache_alloc+0x79/0x200 May 31 13:02:21 fs-new kernel: [ 694.780143] RSP <ffff88001c107d38> May 31 13:02:21 fs-new kernel: [ 694.780965] fbcon_switch: detected unhandled fb_set_par error, error code -16 May 31 13:02:21 fs-new kernel: [ 694.782726] fbcon_switch: detected unhandled fb_set_par error, error code -16 May 31 13:02:21 fs-new kernel: [ 694.784621] ---[ end trace 5c7309d2219a269b ]--- Kernel: Ubuntu 4.4.0-22.40~14.04.1-generic 4.4.8 Release: Description: Ubuntu 14.04.3 LTS, Release: 14.04 Btrfs-tools version: Installed: 3.12-1 Candidate: 3.12-1ubuntu0.1 Version table: 3.12-1ubuntu0.1 0 500 http://us-east-1.ec2.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages *** 3.12-1 0 500 http://us-east-1.ec2.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages 100 /var/lib/dpkg/status --- AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 May 31 13:46 seq crw-rw---- 1 root audio 116, 33 May 31 13:46 timer AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.14.1-0ubuntu3.21 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: [Errno 2] No such file or directory DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=/dev/mapper/packer--virtualbox--iso--1443437048--vg-swap_1 InstallationDate: Installed on 2015-09-28 (246 days ago) InstallationMedia: Ubuntu-Server 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) IwConfig: Error: [Errno 2] No such file or directory Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99 MachineType: innotek GmbH VirtualBox NonfreeKernelModules: zfs zunicode zcommon znvpair zavl Package: linux (not installed) PciMultimedia: ProcFB: 0 vboxdrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-22-generic root=/dev/mapper/packer--virtualbox--iso--1443437048--vg-root ro debian-installer=en_US cgroup_enable=memory swapaccount=1 quiet ProcVersionSignature: Ubuntu 4.4.0-22.40~14.04.1-generic 4.4.8 RelatedPackageVersions: linux-restricted-modules-4.4.0-22-generic N/A linux-backports-modules-4.4.0-22-generic N/A linux-firmware 1.127.14 RfKill: Error: [Errno 2] No such file or directory Tags: trusty Uname: Linux 4.4.0-22-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 12/01/2006 dmi.bios.vendor: innotek GmbH dmi.bios.version: VirtualBox dmi.board.name: VirtualBox dmi.board.vendor: Oracle Corporation dmi.board.version: 1.2 dmi.chassis.type: 1 dmi.chassis.vendor: Oracle Corporation dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr: dmi.product.name: VirtualBox dmi.product.version: 1.2 dmi.sys.vendor: innotek GmbH To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1587475/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
