loop0: detected capacity change from 0 to 32768 BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5323) BTRFS info (device loop0): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf BTRFS info (device loop0): using crc32c checksum algorithm BTRFS info (device loop0): setting nodatasum BTRFS info (device loop0): allowing degraded mounts BTRFS info (device loop0): enabling ssd optimizations BTRFS info (device loop0): disabling tree log BTRFS info (device loop0): turning on async discard BTRFS info (device loop0): enabling free space tree BTRFS info (device loop0): max_inline set to 0 BTRFS info (device loop0): balance: start -sconvert=raid0,soft BTRFS info (device loop0): relocating block group 1048576 flags system BTRFS info (device loop0): balance: ended with status: 0 BTRFS info (device loop0): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf ------------[ cut here ]------------ 1 WARNING: fs/btrfs/space-info.h:257 at btrfs_space_info_update_bytes_may_use+0x318/0x600 fs/btrfs/space-info.h:257, CPU#0: syz.0.0/5323 Modules linked in: CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:btrfs_space_info_update_bytes_may_use+0x318/0x600 fs/btrfs/space-info.h:257 Code: 00 00 74 08 4c 89 ff e8 86 0c 25 fe 4d 8b 27 4c 89 e7 48 8b 6c 24 18 48 89 ee e8 d3 54 ba fd 49 39 ec 73 1c e8 69 52 ba fd 90 <0f> 0b 90 31 db 43 80 7c 35 00 00 0f 85 48 ff ff ff e9 4b ff ff ff RSP: 0018:ffffc9000fa7f9f0 EFLAGS: 00010293 RAX: ffffffff840a31f7 RBX: ffffffffffea0000 RCX: ffff888036860000 RDX: 0000000000000000 RSI: 0000000000160000 RDI: 000000000015f000 RBP: 0000000000160000 R08: ffffffff90103777 R09: 1ffffffff20206ee R10: dffffc0000000000 R11: fffffbfff20206ef R12: 000000000015f000 R13: 1ffff1100850b510 R14: dffffc0000000000 R15: ffff88804285a880 FS: 00007f40e6b776c0(0000) GS:ffff88808cabf000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000005440 CR3: 00000000121e1000 CR4: 0000000000352ef0 Call Trace: btrfs_space_info_free_bytes_may_use fs/btrfs/space-info.h:294 [inline] block_rsv_release_bytes fs/btrfs/block-rsv.c:153 [inline] btrfs_block_rsv_release+0x47b/0x590 fs/btrfs/block-rsv.c:290 btrfs_release_global_block_rsv+0x33/0x300 fs/btrfs/block-rsv.c:461 btrfs_free_block_groups+0xe04/0x1110 fs/btrfs/block-group.c:4671 close_ctree+0x7b4/0x13b0 fs/btrfs/disk-io.c:4456 generic_shutdown_super+0x13d/0x2d0 fs/super.c:646 kill_anon_super+0x3b/0x70 fs/super.c:1292 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2127 deactivate_locked_super+0xbc/0x130 fs/super.c:476 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312 task_work_run+0x1d9/0x270 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:67 [inline] exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline] do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f40e5d9bf79 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f40e6b77028 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f40e6015fa0 RCX: 00007f40e5d9bf79 RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000000 RBP: 00007f40e5e327e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f40e6016038 R14: 00007f40e6015fa0 R15: 00007ffd7fa57738