Doingg a btrfs balance with whatever options gives a segmentation fault after some minutes. First I did a balance for balancing over 2 raid1 drives, and the second time for removing a device from the filesystem. At this moment I can't boot from the filesystem, and when booting from a live USB-stick the balance restarts, and is marked active, but there is no progress anymore. btrfs fi balance start -f -dconvert=single -mconvert=single /mnt "Segmentation fault" Jun 10 03:28:39 ubuntu kernel: [ 1788.907427] ------------[ cut here ]------------ Jun 10 03:28:39 ubuntu kernel: [ 1788.907444] kernel BUG at /build/linux-Ay7j_C/linux-4.4.0/fs/btrfs/relocation.c:2683! Jun 10 03:28:39 ubuntu kernel: [ 1788.907461] invalid opcode: 0000 [#1] SMP Jun 10 03:28:39 ubuntu kernel: [ 1788.907473] Modules linked in: snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_intel kvm snd_hda_codec snd_hda_core irqbypass snd_hwdep snd_pcm crct10dif_pclmul snd_seq_midi eeepc_wmi crc32_pclmul snd_seq_midi_event asus_wmi snd_rawmidi aesni_intel sparse_keymap snd_seq aes_x86_64 snd_seq_device lrw snd_timer input_leds gf128mul snd glue_helper serio_raw mei_me soundcore mei ablk_helper cryptd shpchp lpc_ich 8250_fintek mac_hid tpm_infineon parport_pc ppdev lp parport autofs4 squashfs overlay nls_utf8 isofs hid_generic usbhid hid uas usb_storage btrfs xor raid6_pq nls_iso8859_1 dm_mirror dm_region_hash dm_log i915 mxm_wmi i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops e1000e drm ahci ptp libahci pps_core fjes wmi video Jun 10 03:28:39 ubuntu kernel: [ 1788.907693] CPU: 0 PID: 6564 Comm: btrfs Not tainted 4.4.0-21-generic #37-Ubuntu Jun 10 03:28:39 ubuntu kernel: [ 1788.907709] Hardware name: ASUS All Series/Z87-PLUS, BIOS 1707 12/13/2013 Jun 10 03:28:39 ubuntu kernel: [ 1788.907725] task: ffff8803cfd22940 ti: ffff8803cfe78000 task.ti: ffff8803cfe78000 Jun 10 03:28:39 ubuntu kernel: [ 1788.907741] RIP: 0010:[<ffffffffc033be85>] [<ffffffffc033be85>] do_relocation+0x515/0x520 [btrfs] Jun 10 03:28:39 ubuntu kernel: [ 1788.907778] RSP: 0018:ffff8803cfe7b940 EFLAGS: 00010202 Jun 10 03:28:39 ubuntu kernel: [ 1788.907790] RAX: 0000000000000001 RBX: ffff8803714dc780 RCX: 0000000000000000 Jun 10 03:28:39 ubuntu kernel: [ 1788.907805] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 Jun 10 03:28:39 ubuntu kernel: [ 1788.907821] RBP: ffff8803cfe7b9f8 R08: ffff8803cfe7b8f4 R09: 0000160000000000 Jun 10 03:28:39 ubuntu kernel: [ 1788.907836] R10: 0000000000000002 R11: 0000000000000045 R12: ffff88035e40dc00 Jun 10 03:28:39 ubuntu kernel: [ 1788.907851] R13: ffff88009f01a000 R14: ffff8803823c2780 R15: 0000000000000001 Jun 10 03:28:39 ubuntu kernel: [ 1788.907867] FS: 00007f6fa276e8c0(0000) GS:ffff88042fa00000(0000) knlGS:0000000000000000 Jun 10 03:28:39 ubuntu kernel: [ 1788.907884] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jun 10 03:28:39 ubuntu kernel: [ 1788.907897] CR2: 00007fa24ffbe014 CR3: 00000003cfe13000 CR4: 00000000001406f0 Jun 10 03:28:39 ubuntu kernel: [ 1788.907912] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Jun 10 03:28:39 ubuntu kernel: [ 1788.907928] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Jun 10 03:28:39 ubuntu kernel: [ 1788.907943] Stack: Jun 10 03:28:39 ubuntu kernel: [ 1788.907948] 0000000000000000 ffff88009f01c920 ffff8800bd98e000 ffff88035e40dc40 Jun 10 03:28:39 ubuntu kernel: [ 1788.907967] ffff88009f01c800 ffff8803823c24e0 0000000100000000 ffff880415345780 Jun 10 03:28:39 ubuntu kernel: [ 1788.907986] ffff8803cfe7b980 ffff8803cfe7b980 ffff88037cbfd500 ffff8803823c2780 Jun 10 03:28:39 ubuntu kernel: [ 1788.908005] Call Trace: Jun 10 03:28:39 ubuntu kernel: [ 1788.908019] [<ffffffffc02d8a67>] ? btrfs_block_rsv_refill+0x37/0xb0 [btrfs] Jun 10 03:28:39 ubuntu kernel: [ 1788.908043] [<ffffffffc033e50e>] relocate_tree_blocks+0x4ee/0x5f0 [btrfs] Jun 10 03:28:39 ubuntu kernel: [ 1788.908064] [<ffffffffc0338c1d>] ? tree_insert+0x4d/0x60 [btrfs] Jun 10 03:28:39 ubuntu kernel: [ 1788.908084] [<ffffffffc033c415>] ? add_tree_block+0x155/0x1e0 [btrfs] Jun 10 03:28:39 ubuntu kernel: [ 1788.908105] [<ffffffffc033fa7a>] relocate_block_group+0x41a/0x6c0 [btrfs] Jun 10 03:28:39 ubuntu kernel: [ 1788.908128] [<ffffffffc0307860>] ? btrfs_wait_ordered_roots+0x1d0/0x200 [btrfs] Jun 10 03:28:39 ubuntu kernel: [ 1788.908151] [<ffffffffc033fed3>] btrfs_relocate_block_group+0x1b3/0x290 [btrfs] Jun 10 03:28:39 ubuntu kernel: [ 1788.908175] [<ffffffffc0315567>] btrfs_relocate_chunk.isra.38+0x47/0xd0 [btrfs] Jun 10 03:28:39 ubuntu kernel: [ 1788.908198] [<ffffffffc03169c9>] __btrfs_balance+0x5b9/0xba0 [btrfs] Jun 10 03:28:39 ubuntu kernel: [ 1788.908219] [<ffffffffc0317240>] btrfs_balance+0x290/0x5f0 [btrfs] Jun 10 03:28:39 ubuntu kernel: [ 1788.908240] [<ffffffffc0323957>] btrfs_ioctl_balance+0x377/0x390 [btrfs] Jun 10 03:28:39 ubuntu kernel: [ 1788.908262] [<ffffffffc03250d0>] btrfs_ioctl+0x550/0x28b0 [btrfs] Jun 10 03:28:39 ubuntu kernel: [ 1788.908278] [<ffffffff8120018b>] ? mem_cgroup_try_charge+0x6b/0x1b0 Jun 10 03:28:39 ubuntu kernel: [ 1788.908293] [<ffffffff8119dfd7>] ? lru_cache_add_active_or_unevictable+0x27/0xa0 Jun 10 03:28:39 ubuntu kernel: [ 1788.908311] [<ffffffff811bf87a>] ? handle_mm_fault+0xcaa/0x1820 Jun 10 03:28:39 ubuntu kernel: [ 1788.908325] [<ffffffff812200ff>] do_vfs_ioctl+0x29f/0x490 Jun 10 03:28:39 ubuntu kernel: [ 1788.908338] [<ffffffff8106b554>] ? __do_page_fault+0x1b4/0x400 Jun 10 03:28:39 ubuntu kernel: [ 1788.908351] [<ffffffff81220369>] SyS_ioctl+0x79/0x90 Jun 10 03:28:39 ubuntu kernel: [ 1788.908365] [<ffffffff818244f2>] entry_SYSCALL_64_fastpath+0x16/0x71 Jun 10 03:28:39 ubuntu kernel: [ 1788.908378] Code: fd ff ff 0f 0b 0f b6 43 70 48 8b b5 58 ff ff ff 48 8d 04 c6 48 8b 10 48 89 53 68 48 c7 00 00 00 00 00 0f b6 53 70 e9 db fe ff ff <0f> 0b 0f 0b e8 b2 4e d4 c0 66 90 0f 1f 44 00 00 55 ba b8 05 00 Jun 10 03:28:39 ubuntu kernel: [ 1788.908465] RIP [<ffffffffc033be85>] do_relocation+0x515/0x520 [btrfs] Jun 10 03:28:39 ubuntu kernel: [ 1788.908487] RSP <ffff8803cfe7b940> Jun 10 03:28:39 ubuntu kernel: [ 1788.911887] ---[ end trace b0e6c6829fe54927 ]---
Created attachment 220301 [details] Testcase Test with USB-stick, see attachment
Created attachment 220381 [details] Testcase: btrfs rescue
I also got this bug when I accidentally tried to use raid0 data and raid1 metadata on two IMGs mounted as loop devices: % sudo losetup -f ~/RaidIMG/bellezas_pt1.img % sudo losetup -f /mnt/MEGA/RaidIMG/bellezas_pt2.img % lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT loop0 7:0 0 29G 1 loop ├─loop0p1 259:0 0 2M 1 part ├─loop0p2 259:1 0 128M 1 part └─loop0p3 259:2 0 28,9G 1 part └─app 253:6 0 28,9G 1 crypt ├─vg2-swap 253:7 0 6G 0 lvm └─vg2-root 253:8 0 22,9G 0 lvm /mnt/vg2-root loop1 7:1 0 1G 0 loop loop2 7:2 0 1G 0 loop sda 8:0 0 931,5G 0 disk ├─sda1 8:1 0 2M 0 part ├─sda2 8:2 0 128M 0 part └─sda3 8:3 0 931,4G 0 part └─root 253:0 0 931,4G 0 crypt ├─vg3-swap 253:1 0 200G 0 lvm [SWAP] └─vg3-root 253:2 0 731,4G 0 lvm / sdb 8:16 0 3,7T 0 disk └─MEGA 253:3 0 3,7T 0 crypt /mnt/MEGA sdc 8:32 0 5,5T 0 disk └─sdc1 8:33 0 5,5T 0 part └─UBackup 253:4 0 5,5T 0 crypt └─vg4-UBackup 253:5 0 5,5T 0 lvm /mnt/UBackup % sudo mount /dev/loop1 /mnt/Bellezatest % ls /mnt/Bellezatest Belleza_40.png Belleza_RGB.png 'Goatsquirrel Belleza 40.png' 'Goatsquirrel Belleza Cropped.png' Belleza.exr Crash.jpg 'Goatsquirrel Belleza 40 Stereoscopic 2.png' % sudo btrfs device add /dev/loop2 /mnt/Bellezatest % sudo btrfs balance start -dconvert=raid0 -mconvert=raid1 /mnt/Bellezatest zsh: segmentation fault sudo btrfs balance start -dconvert=raid0 -mconvert=raid1 /mnt/Bellezatest % sudo btrfs balance start -dconvert=raid0 -mconvert=raid1 /mnt/Bellezatest % ls /mnt/Bellezatest Belleza_40.png Belleza_RGB.png 'Goatsquirrel Belleza 40.png' 'Goatsquirrel Belleza Cropped.png' Belleza.exr Crash.jpg 'Goatsquirrel Belleza 40 Stereoscopic 2.png' % df -h df: /run/user/1027/doc: Operacio ne permesatas Dosiersistemo Grando Uzata Liber Uza% Metita sur udev 10M 4,0K 10M 1% /dev /dev/mapper/vg3-root 732G 692G 30G 96% / tmpfs 2,4G 2,3M 2,4G 1% /run cgroup_root 10M 0 10M 0% /sys/fs/cgroup shm 12G 699M 12G 6% /dev/shm /dev/mapper/MEGA 3,7T 3,5T 209G 95% /mnt/MEGA /dev/mapper/vg4-UBackup 5,5T 4,8T 751G 87% /mnt/UBackup /dev/mapper/vg2-root 23G 18G 4,2G 81% /mnt/vg2-root none 12G 8,0K 12G 1% /run/user/1027 /dev/loop1 2,0G 907M 3,6M 1 % sudo btrfs balance start -dconvert=raid0 -mconvert=raid1 /mnt/Bellezatest ERROR: error during balancing '/mnt/Bellezatest': Operation now in progress 00% /mnt/Bellezatest % df -h df: /run/user/1027/doc: Operacio ne permesatas Dosiersistemo Grando Uzata Liber Uza% Metita sur udev 10M 4,0K 10M 1% /dev /dev/mapper/vg3-root 732G 692G 30G 96% / tmpfs 2,4G 2,3M 2,4G 1% /run cgroup_root 10M 0 10M 0% /sys/fs/cgroup shm 12G 673M 12G 6% /dev/shm /dev/mapper/MEGA 3,7T 3,5T 209G 95% /mnt/MEGA /dev/mapper/vg4-UBackup 5,5T 4,8T 751G 87% /mnt/UBackup /dev/mapper/vg2-root 23G 18G 4,2G 81% /mnt/vg2-root none 12G 8,0K 12G 1% /run/user/1027 /dev/loop1 2,0G 907M 3,6M 100% /mnt/Bellezatest % sudo btrfs balance start -dconvert=raid0 -mconvert=raid0 /mnt/Bellezatest ERROR: error during balancing '/mnt/Bellezatest': Operation now in progress % sudo umount /mnt/Bellezatest And now it is frozen not unmounting and with 0 disk activity. This is in my dmesg: [4914704.809383] ------------[ cut here ]------------ [4914704.809384] kernel BUG at fs/btrfs/relocation.c:3442! [4914704.809389] invalid opcode: 0000 [#1] SMP PTI [4914704.809393] CPU: 0 PID: 25998 Comm: btrfs Tainted: G W 5.11.0-gentoo #1 [4914704.809396] Hardware name: Supermicro X8DT3/X8DT3, BIOS 2.1 03/17/2012 [4914704.809398] RIP: 0010:create_reloc_inode+0x109/0x240 [4914704.809405] Code: e8 2c b8 f8 ff 49 89 c6 48 85 c0 74 1d 4c 89 f9 48 89 c2 48 89 ee 4c 89 e7 e8 83 12 fa ff 85 c0 74 0a 4c 89 f7 e8 07 bc f8 ff <0f> 0b 49 63 46 40 ba 11 00 00 00 49 8b 1e 48 8d 04 80 48 8d 74 80 [4914704.809408] RSP: 0018:ffffc90007847d18 EFLAGS: 00010202 [4914704.809411] RAX: ffff888184dd9001 RBX: 0000000000000000 RCX: 0000000006abf955 [4914704.809413] RDX: 0000000006abf954 RSI: ffffffff816cb3c9 RDI: 00006079d0005f40 [4914704.809415] RBP: ffff8883ea92d000 R08: 00000000ffffffe4 R09: ffffffff8169dbe0 [4914704.809417] R10: 0000000000000001 R11: 0000000000000000 R12: ffff88807aa81ea0 [4914704.809418] R13: ffff88827db6a000 R14: ffff888184dd9b60 R15: 0000000000000101 [4914704.809420] FS: 00007fe56faac8c0(0000) GS:ffff888237a00000(0000) knlGS:0000000000000000 [4914704.809423] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [4914704.809425] CR2: 00007fdad236c718 CR3: 000000026cbd0000 CR4: 00000000000006f0 [4914704.809427] Call Trace: [4914704.809430] btrfs_relocate_block_group+0xf6/0x300 [4914704.809693] btrfs_relocate_chunk+0x22/0xb0 [4914704.809698] btrfs_balance+0x6f0/0xec0 [4914704.809891] btrfs_ioctl_balance+0x2bb/0x370 [4914704.809898] __x64_sys_ioctl+0x7e/0xb0 [4914704.809907] do_syscall_64+0x33/0x40 [4914704.809912] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [4914704.809916] RIP: 0033:0x7fe56fba0587 [4914704.809919] Code: 00 00 90 48 8b 05 09 39 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d d9 38 0c 00 f7 d8 64 89 01 48 [4914704.809922] RSP: 002b:00007ffdd989e468 EFLAGS: 00000202 ORIG_RAX: 0000000000000010 [4914704.809924] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fe56fba0587 [4914704.809926] RDX: 00007ffdd989e500 RSI: 00000000c4009420 RDI: 0000000000000003 [4914704.809928] RBP: 0000000000000003 R08: 0000560549b3a2a0 R09: 0000000000000003 [4914704.809930] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffdd989fdb8 [4914704.809931] R13: 00007ffdd989e500 R14: 0000000000000001 R15: 00007ffdd989e500 [4914704.809934] Modules linked in: bpfilter uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common videodev mc btusb btrtl btbcm btintel virtio_crypto crypto_engine [4914704.809949] ---[ end trace 5e5e801bd76aa527 ]--- [4914704.809952] RIP: 0010:create_reloc_inode+0x109/0x240 [4914704.809956] Code: e8 2c b8 f8 ff 49 89 c6 48 85 c0 74 1d 4c 89 f9 48 89 c2 48 89 ee 4c 89 e7 e8 83 12 fa ff 85 c0 74 0a 4c 89 f7 e8 07 bc f8 ff <0f> 0b 49 63 46 40 ba 11 00 00 00 49 8b 1e 48 8d 04 80 48 8d 74 80 [4914704.809959] RSP: 0018:ffffc90007847d18 EFLAGS: 00010202 [4914704.809962] RAX: ffff888184dd9001 RBX: 0000000000000000 RCX: 0000000006abf955 [4914704.809965] RDX: 0000000006abf954 RSI: ffffffff816cb3c9 RDI: 00006079d0005f40 [4914704.809967] RBP: ffff8883ea92d000 R08: 00000000ffffffe4 R09: ffffffff8169dbe0 [4914704.809970] R10: 0000000000000001 R11: 0000000000000000 R12: ffff88807aa81ea0 [4914704.809972] R13: ffff88827db6a000 R14: ffff888184dd9b60 R15: 0000000000000101 [4914704.809974] FS: 00007fe56faac8c0(0000) GS:ffff888237a00000(0000) knlGS:0000000000000000 [4914704.809976] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [4914704.809978] CR2: 00007fdad236c718 CR3: 000000026cbd0000 CR4: 00000000000006f0 [4914815.648634] ------------[ cut here ]------------ [4914815.648640] WARNING: CPU: 1 PID: 26561 at fs/namespace.c:1109 cleanup_mnt+0x150/0x180 [4914815.648647] Modules linked in: bpfilter uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common videodev mc btusb btrtl btbcm btintel virtio_crypto crypto_engine [4914815.648660] CPU: 1 PID: 26561 Comm: umount Tainted: G D W 5.11.0-gentoo #1 [4914815.648663] Hardware name: Supermicro X8DT3/X8DT3, BIOS 2.1 03/17/2012 [4914815.648664] RIP: 0010:cleanup_mnt+0x150/0x180 [4914815.648667] Code: fd ff 8b b5 1c 01 00 00 48 c7 c7 40 90 38 83 e8 86 0f 57 00 48 8d 7d 38 5b 48 c7 c6 80 e9 33 81 5d 41 5c 41 5d e9 30 85 eb ff <0f> 0b 48 83 bd 28 01 00 00 00 0f 84 f1 fe ff ff 48 89 ef e8 a8 88 [4914815.648670] RSP: 0018:ffffc90005737ed8 EFLAGS: 00010202 [4914815.648673] RAX: 0000000000000040 RBX: 0000000000000001 RCX: 0000000000000040 [4914815.648675] RDX: 0000000000ffffff RSI: 0000000000000000 RDI: 0000000000000040 [4914815.648677] RBP: ffff888259636140 R08: 0000000000000000 R09: 0000000000000040 [4914815.648678] R10: ffffffff83363f18 R11: ffff888237a68824 R12: ffff88813cf4d8dc [4914815.648680] R13: ffff88813cf4d100 R14: 0000000000000000 R15: 0000000000000000 [4914815.648682] FS: 00007efe8fa72740(0000) GS:ffff888237a40000(0000) knlGS:0000000000000000 [4914815.648685] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [4914815.648686] CR2: 00007fdad236c718 CR3: 000000017382e000 CR4: 00000000000006e0 [4914815.648689] Call Trace: [4914815.648692] task_work_run+0x57/0x90 [4914815.648697] exit_to_user_mode_prepare+0x10b/0x110 [4914815.648701] syscall_exit_to_user_mode+0x1d/0x40 [4914815.648706] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [4914815.648709] RIP: 0033:0x7efe8fbbf537 [4914815.648712] Code: a9 0b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 29 a9 0b 00 f7 d8 64 89 01 48 [4914815.648714] RSP: 002b:00007ffde1298968 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 [4914815.648717] RAX: 0000000000000000 RBX: 000055970fce1440 RCX: 00007efe8fbbf537 [4914815.648719] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 000055970fce1670 [4914815.648720] RBP: 0000000000000000 R08: 000055970fce1690 R09: 00007ffde12971a0 [4914815.648722] R10: 0000000000000000 R11: 0000000000000246 R12: 000055970fce1670 [4914815.648724] R13: 00007efe8fcddfa4 R14: 000055970fce1550 R15: 0000000000000000 [4914815.648727] ---[ end trace 5e5e801bd76aa528 ]---
Just want to add that I am also having this issue. Please find my dmesg log below. This was on a full-balance. [ 1667.043961] kernel BUG at fs/btrfs/relocation.c:4391! [ 1667.043966] invalid opcode: 0000 [#1] PREEMPT SMP PTI [ 1667.043968] CPU: 2 PID: 3784 Comm: btrfs Tainted: P O 6.1.31_1 #1 [ 1667.043970] Hardware name: Dell Inc. G7 7590/0CNDTP, BIOS 1.18.0 12/01/2021 [ 1667.043971] RIP: 0010:btrfs_reloc_cow_block+0x29f/0x2b0 [btrfs] [ 1667.043999] Code: 24 28 48 8b 44 24 08 4d 89 73 70 49 89 42 30 49 89 72 38 4c 89 36 41 80 4a 71 20 e9 a2 fe ff ff 49 39 72 20 0f 84 49 fe ff ff <0f> 0b 41 0f b6 94 24 e8 05 00 00 e9 e8 fd ff ff 90 0f 1f 44 00 00 [ 1667.044001] RSP: 0018:ffff9cbe037037d0 EFLAGS: 00010287 [ 1667.044003] RAX: 0000000000000001 RBX: ffff893de9d60800 RCX: ffff89405b7c5800 [ 1667.044005] RDX: 0000000000000001 RSI: 000000cea83b8000 RDI: fffffffffffffff8 [ 1667.044006] RBP: ffff894023c91500 R08: 0000000000000001 R09: 0000000000000000 [ 1667.044007] R10: ffff893da866ad80 R11: ffff8940fe7fa000 R12: ffff8940c4466800 [ 1667.044008] R13: 0000000000000001 R14: 0000000000000001 R15: ffff893d82a123a8 [ 1667.044009] FS: 00007f97562aa900(0000) GS:ffff8940ee280000(0000) knlGS:0000000000000000 [ 1667.044011] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1667.044012] CR2: 000055c9503a0068 CR3: 00000002c0792003 CR4: 00000000003706e0 [ 1667.044014] Call Trace: [ 1667.044016] <TASK> [ 1667.044017] ? __die_body.cold+0x1a/0x1f [ 1667.044021] ? die+0x2a/0x50 [ 1667.044024] ? do_trap+0xc5/0x110 [ 1667.044026] ? btrfs_reloc_cow_block+0x29f/0x2b0 [btrfs] [ 1667.044051] ? do_error_trap+0x6a/0x90 [ 1667.044053] ? btrfs_reloc_cow_block+0x29f/0x2b0 [btrfs] [ 1667.044077] ? exc_invalid_op+0x4c/0x60 [ 1667.044079] ? btrfs_reloc_cow_block+0x29f/0x2b0 [btrfs] [ 1667.044102] ? asm_exc_invalid_op+0x16/0x20 [ 1667.044105] ? btrfs_reloc_cow_block+0x29f/0x2b0 [btrfs] [ 1667.044128] ? update_ref_for_cow+0x22b/0x310 [btrfs] [ 1667.044146] __btrfs_cow_block+0x3c3/0x530 [btrfs] [ 1667.044166] btrfs_cow_block+0xf2/0x190 [btrfs] [ 1667.044185] btrfs_search_slot+0x542/0xc60 [btrfs] [ 1667.044203] ? select_reloc_root+0x258/0x2e0 [btrfs] [ 1667.044228] do_relocation+0xb0/0x650 [btrfs] [ 1667.044252] ? kmem_cache_free+0x15/0x310 [ 1667.044255] ? select_one_root+0x2f/0x130 [btrfs] [ 1667.044278] ? preempt_count_add+0x6a/0xa0 [ 1667.044280] ? _raw_spin_lock+0x13/0x40 [ 1667.044283] relocate_tree_blocks+0x2ed/0x610 [btrfs] [ 1667.044308] relocate_block_group+0x3a2/0x4f0 [btrfs] [ 1667.044332] btrfs_relocate_block_group+0x22d/0x3f0 [btrfs] [ 1667.044356] btrfs_relocate_chunk+0x3b/0x120 [btrfs] [ 1667.044379] btrfs_balance+0x764/0xf30 [btrfs] [ 1667.044405] btrfs_ioctl+0x223f/0x25d0 [btrfs] [ 1667.044430] ? preempt_count_add+0x6a/0xa0 [ 1667.044431] ? _raw_spin_lock+0x13/0x40 [ 1667.044434] ? krc_this_cpu_lock+0x35/0x40 [ 1667.044436] ? kvfree_call_rcu+0x242/0x320 [ 1667.044439] __x64_sys_ioctl+0x8d/0xd0 [ 1667.044441] do_syscall_64+0x58/0x80 [ 1667.044443] ? __rseq_handle_notify_resume+0xa6/0x480 [ 1667.044446] ? fpregs_assert_state_consistent+0x22/0x50 [ 1667.044449] ? exit_to_user_mode_prepare+0x40/0x1b0 [ 1667.044451] ? syscall_exit_to_user_mode+0x17/0x40 [ 1667.044453] ? do_syscall_64+0x67/0x80 [ 1667.044454] ? exit_to_user_mode_prepare+0x40/0x1b0 [ 1667.044456] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 1667.044458] RIP: 0033:0x7f9755f155ab [ 1667.044460] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <41> 89 c0 3d 00 f0 ff ff 77 1b 48 8b 44 24 18 64 48 2b 04 25 28 00 [ 1667.044462] RSP: 002b:00007ffe0c4fef80 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1667.044464] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f9755f155ab [ 1667.044465] RDX: 00007ffe0c4ff080 RSI: 00000000c4009420 RDI: 0000000000000003 [ 1667.044466] RBP: 0000000000000000 R08: 0000000000000013 R09: 00007f9755fa8760 [ 1667.044467] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe0c500920 [ 1667.044468] R13: 00007ffe0c4ff080 R14: 0000000000000002 R15: 0000000000000000 [ 1667.044471] </TASK> [ 1667.044471] Modules linked in: ntfs3 sd_mod uas usb_storage rfcomm snd_seq_dummy snd_hrtimer ctr xt_CHECKSUM xt_MASQUERADE xt_tcpudp ip6table_mangle ip6table_nat iptable_mangle iptable_nat nf_nat bridge xfrm_interface xfrm6_tunnel tunnel4 tunnel6 bnep xfrm_user xfrm_algo ccm algif_aead des_generic libdes ip6t_REJECT nf_reject_ipv6 ip6table_filter ip6_tables algif_skcipher ipt_REJECT nf_reject_ipv4 xt_conntrack msr nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 cmac iptable_filter ip_tables md4 x_tables 8021q algif_hash garp mrp stp llc af_alg nls_iso8859_1 nls_cp437 vfat fat ext4 mbcache jbd2 btusb uvcvideo btrtl videobuf2_vmalloc btbcm videobuf2_memops btintel videobuf2_v4l2 btmtk videobuf2_common snd_hda_codec_hdmi joydev snd_sof_pci_intel_cnl snd_sof_intel_hda_common soundwire_intel soundwire_generic_allocation soundwire_cadence snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_ctl_led snd_sof snd_sof_utils soundwire_bus snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_sst_ipc [ 1667.044512] snd_soc_sst_dsp snd_hda_codec_realtek snd_soc_acpi_intel_match intel_tcc_cooling snd_soc_acpi x86_pkg_temp_thermal snd_hda_codec_generic intel_powerclamp snd_soc_core coretemp iwlmvm snd_compress snd_pcm_dmaengine ac97_bus nvidia_drm(PO) iTCO_wdt ee1004 kvm_intel snd_hda_intel intel_pmc_bxt i2c_designware_platform nvidia_modeset(PO) i2c_designware_core mei_pxp mei_hdcp iTCO_vendor_support mac80211 intel_rapl_msr snd_intel_dspcfg dell_laptop libarc4 snd_intel_sdw_acpi kvm snd_hda_codec iwlwifi dell_wmi ledtrig_audio processor_thermal_device_pci_legacy irqbypass intel_soc_dts_iosf dell_smbios snd_hda_core processor_thermal_device rapl dcdbas intel_cstate psmouse input_leds intel_lpss_pci nvidia(PO) processor_thermal_rfim i2c_i801 alienware_wmi dell_wmi_descriptor spi_intel_pci pcspkr wmi_bmof intel_wmi_thunderbolt intel_lpss snd_hwdep processor_thermal_mbox spi_intel mei_me tiny_power_button r8169 i2c_smbus idma64 processor_thermal_rapl i2c_nvidia_gpu realtek thunderbolt [ 1667.044544] cfg80211 snd_pcm mei i2c_ccgx_ucsi intel_rapl_common virt_dma intel_pch_thermal thermal int3403_thermal tpm_crb evdev int340x_thermal_zone mac_hid tpm_tis tpm_tis_core intel_hid int3400_thermal acpi_thermal_rel sparse_keymap ac acpi_pad v4l2loopback(O) videodev mc sg snd_seq snd_seq_device snd_timer snd soundcore vhost_vsock vmw_vsock_virtio_transport_common vsock vhost_net vhost vhost_iotlb tap uhid hci_vhci bluetooth ecdh_generic rfkill ecc crc16 vfio_iommu_type1 vfio uinput userio ppp_generic slhc tun loop nvram cuse fuse dm_crypt encrypted_keys trusted asn1_encoder tee tpm rng_core hid_generic usbmouse usbhid i915 intel_gtt drm_buddy i2c_algo_bit drm_display_helper cec rc_core drm_kms_helper syscopyarea sysfillrect crct10dif_pclmul ahci sysimgblt crc32_pclmul fb_sys_fops polyval_clmulni libahci polyval_generic gf128mul ttm xhci_pci xhci_pci_renesas ghash_clmulni_intel libata sha512_ssse3 drm i2c_hid_acpi scsi_mod xhci_hcd aesni_intel i2c_hid crypto_simd mxm_wmi cryptd [ 1667.044587] usbcore serio_raw scsi_common agpgart usb_common hid button battery video wmi pinctrl_cannonlake dm_mirror dm_region_hash dm_log dm_mod btrfs blake2b_generic xor raid6_pq libcrc32c crc32c_generic crc32c_intel [ 1667.044603] ---[ end trace 0000000000000000 ]--- [ 1667.044604] RIP: 0010:btrfs_reloc_cow_block+0x29f/0x2b0 [btrfs] [ 1667.044628] Code: 24 28 48 8b 44 24 08 4d 89 73 70 49 89 42 30 49 89 72 38 4c 89 36 41 80 4a 71 20 e9 a2 fe ff ff 49 39 72 20 0f 84 49 fe ff ff <0f> 0b 41 0f b6 94 24 e8 05 00 00 e9 e8 fd ff ff 90 0f 1f 44 00 00 [ 1667.044629] RSP: 0018:ffff9cbe037037d0 EFLAGS: 00010287 [ 1667.044631] RAX: 0000000000000001 RBX: ffff893de9d60800 RCX: ffff89405b7c5800 [ 1667.044632] RDX: 0000000000000001 RSI: 000000cea83b8000 RDI: fffffffffffffff8 [ 1667.044633] RBP: ffff894023c91500 R08: 0000000000000001 R09: 0000000000000000 [ 1667.044634] R10: ffff893da866ad80 R11: ffff8940fe7fa000 R12: ffff8940c4466800 [ 1667.044635] R13: 0000000000000001 R14: 0000000000000001 R15: ffff893d82a123a8 [ 1667.044636] FS: 00007f97562aa900(0000) GS:ffff8940ee280000(0000) knlGS:0000000000000000 [ 1667.044637] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1667.044638] CR2: 000055c9503a0068 CR3: 00000002c0792003 CR4: 00000000003706e0