BTRFS info (device loop0): last unmount of filesystem 14d642db-7b15-43e4-81e6-4b8fac6a25f8
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WARNING: CPU: 0 PID: 4325 at fs/btrfs/block-rsv.c:480 btrfs_release_global_block_rsv+0x224/0x22c fs/btrfs/block-rsv.c:480
Modules linked in:
CPU: 0 PID: 4325 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : btrfs_release_global_block_rsv+0x224/0x22c fs/btrfs/block-rsv.c:480
lr : btrfs_release_global_block_rsv+0x224/0x22c fs/btrfs/block-rsv.c:480
sp : ffff800020e97720
x29: ffff800020e97720 x28: dead000000000100 x27: dfff800000000000
x26: 1fffe0001ad0a030 x25: 0000000000000000 x24: 0000000000000001
x23: ffff0000c4008000 x22: 0000000000000000 x21: dfff800000000000
x20: 0000000000000000 x19: fffffffffffe0000 x18: ffff800011b9bf60
x17: 1fffe00033ea637e x16: ffff8000082eef80 x15: ffff80001521d000
x14: 0000000000000001 x13: 1fffe0001a603e04 x12: 0000000000ff0100
x11: ff0080000a157a14 x10: 0000000000000000 x9 : ffff80000a157a14
x8 : ffff0000d3ff9bc0 x7 : ffff80000a1561d0 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082ef094
x2 : 0000000000000001 x1 : fffffffffffe0000 x0 : 0000000000000000
Call trace:
 btrfs_release_global_block_rsv+0x224/0x22c fs/btrfs/block-rsv.c:480
 btrfs_free_block_groups+0x91c/0xaf4 fs/btrfs/block-group.c:4268
 close_ctree+0x5f0/0xa94 fs/btrfs/disk-io.c:4780
 btrfs_put_super+0x70/0x80 fs/btrfs/super.c:397
 generic_shutdown_super+0x130/0x324 fs/super.c:501
 kill_anon_super+0x4c/0x80 fs/super.c:1128
 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2448
 deactivate_locked_super+0xac/0x120 fs/super.c:332
 deactivate_super+0xe4/0x104 fs/super.c:363
 cleanup_mnt+0x390/0x418 fs/namespace.c:1191
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1198
 task_work_run+0x1ec/0x278 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x1fa0/0x2aa4 arch/arm64/kernel/signal.c:1151
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x98/0x128 arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 552490
hardirqs last  enabled at (552489): [<ffff800008257a18>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1374 [inline]
hardirqs last  enabled at (552489): [<ffff800008257a18>] finish_lock_switch+0xb0/0x1c4 kernel/sched/core.c:5004
hardirqs last disabled at (552490): [<ffff800011a38914>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (550586): [<ffff8000081ac394>] softirq_handle_end kernel/softirq.c:439 [inline]
softirqs last  enabled at (550586): [<ffff8000081ac394>] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624
softirqs last disabled at (550387): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---