BTRFS info (device loop4 state EA): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
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WARNING: CPU: 1 PID: 6550 at fs/btrfs/block-rsv.c:466 btrfs_release_global_block_rsv+0x224/0x22c fs/btrfs/block-rsv.c:466
Modules linked in:
CPU: 1 UID: 0 PID: 6550 Comm: syz-executor Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : btrfs_release_global_block_rsv+0x224/0x22c fs/btrfs/block-rsv.c:466
lr : btrfs_release_global_block_rsv+0x224/0x22c fs/btrfs/block-rsv.c:466
sp : ffff80009ef07940
x29: ffff80009ef07940 x28: 1fffe0001f31082c x27: dfff800000000000
x26: ffff0000f9884058 x25: 0000000000000001 x24: ffff0000f98841a8
x23: ffff0000f9884000 x22: 0000000000000000 x21: dfff800000000000
x20: 0000000000000000 x19: 0000000000010000 x18: 0000000000000000
x17: ffff80010ca32000 x16: ffff80008053739c x15: 0000000000000001
x14: 1fffe0001f310904 x13: 0000000000000000 x12: 0000000000000000
x11: ffff60001f310905 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : ffff0000db409ec0 x7 : ffff800082596180 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000805374a4
x2 : 0000000000000001 x1 : 0000000000010000 x0 : 0000000000000000
Call trace:
 btrfs_release_global_block_rsv+0x224/0x22c fs/btrfs/block-rsv.c:466 (P)
 btrfs_free_block_groups+0xa4c/0xd10 fs/btrfs/block-group.c:4574
 close_ctree+0x650/0x113c fs/btrfs/disk-io.c:4426
 btrfs_put_super+0x1ac/0x1c0 fs/btrfs/super.c:74
 generic_shutdown_super+0x12c/0x2b8 fs/super.c:642
 kill_anon_super+0x4c/0x7c fs/super.c:1281
 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2134
 deactivate_locked_super+0xc4/0x12c fs/super.c:473
 deactivate_super+0xe0/0x100 fs/super.c:506
 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1327
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1334
 task_work_run+0x1dc/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xfc/0x178 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:103 [inline]
 el0_svc+0x170/0x254 arch/arm64/kernel/entry-common.c:747
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
irq event stamp: 1107676
hardirqs last  enabled at (1107675): [<ffff800080c84b38>] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234
hardirqs last disabled at (1107676): [<ffff80008adecb80>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:434
softirqs last  enabled at (1107102): [<ffff8000803d8488>] softirq_handle_end kernel/softirq.c:468 [inline]
softirqs last  enabled at (1107102): [<ffff8000803d8488>] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:650
softirqs last disabled at (1106909): [<ffff800080022024>] __do_softirq+0x14/0x20 kernel/softirq.c:656
---[ end trace 0000000000000000 ]---