BTRFS info (device loop2): last unmount of filesystem c0ead524-1f1c-4ccc-9384-0f6d362fec31 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7267 at fs/btrfs/block-rsv.c:459 btrfs_release_global_block_rsv+0x261/0x270 fs/btrfs/block-rsv.c:459 Modules linked in: CPU: 0 UID: 0 PID: 7267 Comm: syz-executor Not tainted 6.12.0-rc7-syzkaller-00212-g4a5df3796467 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 RIP: 0010:btrfs_release_global_block_rsv+0x261/0x270 fs/btrfs/block-rsv.c:459 Code: 0f 0b 90 e9 0c ff ff ff e8 5c 0b bd fd 90 0f 0b 90 e9 36 ff ff ff e8 4e 0b bd fd 90 0f 0b 90 e9 67 ff ff ff e8 40 0b bd fd 90 <0f> 0b 90 eb 89 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 RSP: 0018:ffffc900031d7ad8 EFLAGS: 00010293 RAX: ffffffff83d7de70 RBX: ffffffffffff0000 RCX: ffff888061e1bc00 RDX: 0000000000000000 RSI: ffffffffffff0000 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff83d7ddf5 R09: 1ffff1100ec11901 R10: dffffc0000000000 R11: ffffed100ec11902 R12: ffff888076088800 R13: ffff888076088858 R14: ffff8880616fc400 R15: dffffc0000000000 FS: 000055556ead0500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f273f7405e8 CR3: 000000006e45a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btrfs_free_block_groups+0xc3c/0x1080 fs/btrfs/block-group.c:4472 close_ctree+0x772/0xd60 fs/btrfs/disk-io.c:4378 generic_shutdown_super+0x139/0x2d0 fs/super.c:642 kill_anon_super+0x3b/0x70 fs/super.c:1237 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2114 deactivate_locked_super+0xc4/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373 task_work_run+0x24f/0x310 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5f6357fa47 Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 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 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fffd1227198 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5f6357fa47 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffd1227250 RBP: 00007fffd1227250 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffd12282d0 R13: 00007f5f635f15fc R14: 0000000000045f15 R15: 00007fffd1228310