[27925.798106] run fstests btrfs/078 at 2021-01-07 04:35:40
[27925.964723] BTRFS info (device dm-0): using free space tree
[27925.965077] BTRFS info (device dm-0): has skinny extents
[27926.094096] BTRFS: device fsid d46ac61b-6e54-479e-ba4e-b81bbd14a051 devid 1 transid 5 /dev/mapper/vg0-lv9 scanned by mkfs.btrfs (2450791)
[27926.117168] BTRFS info (device dm-9): turning on sync discard
[27926.117554] BTRFS info (device dm-9): enabling free space tree
[27926.118030] BTRFS info (device dm-9): using free space tree
[27926.118453] BTRFS info (device dm-9): has skinny extents
[27926.118880] BTRFS info (device dm-9): flagging fs with big metadata feature
[27926.127833] BTRFS info (device dm-9): creating free space tree
[27926.128244] BTRFS info (device dm-9): setting compat-ro feature flag for FREE_SPACE_TREE (0x1)
[27926.128745] BTRFS info (device dm-9): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[27926.137767] BTRFS info (device dm-9): cleaning free space cache v1
[27926.146565] BTRFS info (device dm-9): checking UUID tree
[27975.193939] ------------[ cut here ]------------
[27975.194244] BTRFS: Transaction aborted (error -12)
[27975.194537] WARNING: CPU: 0 PID: 2451488 at fs/btrfs/transaction.c:1679 create_pending_snapshot+0x9b2/0xda0
[27975.195114] Modules linked in: dm_thin_pool dm_persistent_data dm_bio_prison dm_log_writes dm_dust dm_flakey loop nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6_tables nft_compat rfkill ip_set nf_tables nfnetlink snd_hda_codec_generic snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hwdep snd_hda_core iTCO_wdt iTCO_vendor_support intel_rapl_msr snd_pcm joydev snd_timer i2c_i801 intel_rapl_common snd i2c_smbus soundcore lpc_ich virtio_balloon zram ip_tables xfs crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel qxl drm_ttm_helper ttm serio_raw drm_kms_helper cec virtio_blk drm qemu_fw_cfg
[27975.198735] CPU: 0 PID: 2451488 Comm: btrfs Not tainted 5.11.0-rc2+ #100
[27975.199131] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-2.fc32 04/01/2014
[27975.199625] RIP: 0010:create_pending_snapshot+0x9b2/0xda0
[27975.199999] Code: 24 50 f0 48 0f ba aa d0 19 00 00 03 72 22 83 f8 fb 74 3f 83 f8 e2 74 3a 89 c6 48 c7 c7 68 63 61 bd 48 89 45 88 e8 4c 39 76 00 <0f> 0b 48 8b 45 88 89 c1 ba 8f 06 00 00 48 c7 c6 90 72 27 bd 4c 89
[27975.201055] RSP: 0000:ffff9bc2806c7b20 EFLAGS: 00010282
[27975.201450] RAX: 0000000000000026 RBX: ffff8f468ac78300 RCX: ffff8f46fbc19118
[27975.201857] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff8f46fbc19110
[27975.202280] RBP: ffff9bc2806c7bf0 R08: 0000000000000000 R09: 0000000000000000
[27975.202684] R10: ffff9bc2806c7950 R11: ffffffffbd9457c0 R12: ffff8f46891c3b60
[27975.203100] R13: ffff8f469210b200 R14: ffff8f468094bf50 R15: 00000000fffffff4
[27975.203501] FS:  00007fbb21e7f8c0(0000) GS:ffff8f46fbc00000(0000) knlGS:0000000000000000
[27975.203958] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[27975.204293] CR2: 000055a1202a5388 CR3: 0000000179ab8005 CR4: 0000000000370ef0
[27975.204758] Call Trace:
[27975.205007]  ? create_pending_snapshots+0xaa/0xd0
[27975.205289]  create_pending_snapshots+0xaa/0xd0
[27975.205549]  btrfs_commit_transaction+0x2b5/0xbe0
[27975.205823]  ? start_transaction+0xe0/0x6f0
[27975.206075]  ? lock_release+0x1c3/0x290
[27975.206317]  btrfs_mksubvol+0x2aa/0x460
[27975.206641]  btrfs_mksnapshot+0x7b/0xb0
[27975.206936]  __btrfs_ioctl_snap_create+0x16f/0x180
[27975.207222]  btrfs_ioctl_snap_create_v2+0xb0/0xf0
[27975.207532]  btrfs_ioctl+0x11dd/0x30c0
[27975.207820]  ? _raw_spin_unlock+0x1f/0x30
[27975.208051]  ? handle_mm_fault+0x1095/0x1990
[27975.208309]  ? lock_release+0x1c3/0x290
[27975.208531]  ? __x64_sys_ioctl+0x83/0xb0
[27975.208766]  __x64_sys_ioctl+0x83/0xb0
[27975.209097]  do_syscall_64+0x33/0x40
[27975.209336]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[27975.209623] RIP: 0033:0x7fbb21f7a4cb
[27975.209838] Code: 89 d8 49 8d 3c 1c 48 f7 d8 49 39 c4 72 b5 e8 1c ff ff ff 85 c0 78 ba 4c 89 e0 5b 5d 41 5c c3 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 7d b9 0c 00 f7 d8 64 89 01 48
[27975.210892] RSP: 002b:00007ffc5fcaa318 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[27975.211349] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fbb21f7a4cb
[27975.211821] RDX: 00007ffc5fcaa3f0 RSI: 0000000050009417 RDI: 0000000000000003
[27975.212231] RBP: 00007fbb21e7f6a8 R08: 0000000000000010 R09: 0000000000000004
[27975.212630] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffc5fcaa3f0
[27975.213033] R13: 000055dcd4d302a0 R14: 000055dcd4d302d0 R15: 0000000000000000
[27975.213446] irq event stamp: 0
[27975.213639] hardirqs last  enabled at (0): [<0000000000000000>] 0x0
[27975.213997] hardirqs last disabled at (0): [] copy_process+0x8bc/0x1ca0
[27975.214466] softirqs last  enabled at (0): [] copy_process+0x8bc/0x1ca0
[27975.214929] softirqs last disabled at (0): [<0000000000000000>] 0x0
[27975.215293] ---[ end trace 4239300cbfd8ef3f ]---
[27975.215594] BTRFS: error (device dm-9) in create_pending_snapshot:1679: errno=-12 Out of memory
[27975.216940] BTRFS info (device dm-9): forced readonly
[27975.217729] BTRFS warning (device dm-9): Skipping commit of aborted transaction.
[27975.218305] BTRFS: error (device dm-9) in cleanup_transaction:1939: errno=-12 Out of memory
[27978.875662] BTRFS info (device dm-9): turning on sync discard
[27978.876013] BTRFS info (device dm-9): using free space tree
[27978.876349] BTRFS info (device dm-9): has skinny extents