BTRFS info (device loop0): last unmount of filesystem ed167579-eb65-4e76-9a50-61ac97e9b59d ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5821 at fs/btrfs/block-rsv.c:458 btrfs_release_global_block_rsv+0x253/0x270 fs/btrfs/block-rsv.c:458 Modules linked in: CPU: 1 UID: 0 PID: 5821 Comm: syz-executor Not tainted 6.13.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 RIP: 0010:btrfs_release_global_block_rsv+0x253/0x270 fs/btrfs/block-rsv.c:458 Code: 0f 0b 90 e9 e2 fe ff ff e8 8a 31 c2 fd 90 0f 0b 90 e9 0c ff ff ff e8 7c 31 c2 fd 90 0f 0b 90 e9 36 ff ff ff e8 6e 31 c2 fd 90 <0f> 0b 90 e9 67 ff ff ff e8 60 31 c2 fd 90 0f 0b 90 eb 89 66 2e 0f RSP: 0018:ffffc90003fcfad8 EFLAGS: 00010293 RAX: ffffffff83dd4232 RBX: 0000000000008000 RCX: ffff88807d280000 RDX: 0000000000000000 RSI: 0000000000008000 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff83dd4194 R09: 1ffff1100b0d4101 R10: dffffc0000000000 R11: ffffed100b0d4102 R12: ffff8880586a7000 R13: 1ffff1100b0d4e2e R14: ffff888029160400 R15: dffffc0000000000 FS: 000055558de4e500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055c415b96000 CR3: 0000000061ab8000 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+0x7b0/0xd90 fs/btrfs/disk-io.c:4385 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:2100 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:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1c6b387047 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:00007ffc5f18cb18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f1c6b387047 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc5f18cbd0 RBP: 00007ffc5f18cbd0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc5f18dc50 R13: 00007f1c6b40180c R14: 00007ffc5f18dc90 R15: 0000000000000023