syzbot

WARNING: CPU: 0 PID: 6097 at fs/btrfs/block-rsv.c:523 btrfs_use_block_rsv+0x60d/0x860 fs/btrfs/block-rsv.c:523
Modules linked in:
CPU: 0 PID: 6097 Comm: kworker/u4:34 Not tainted 6.7.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Workqueue: btrfs-endio-write btrfs_work_helper
RIP: 0010:btrfs_use_block_rsv+0x60d/0x860 fs/btrfs/block-rsv.c:523
Code: ea 83 e2 07 38 d0 7f 0c 84 c0 74 08 48 89 ef e8 59 35 44 fe 0f b6 73 5a ba e4 ff ff ff 48 c7 c7 80 3e 19 8b e8 64 b5 b3 fd 90 <0f> 0b 90 90 e9 f5 fd ff ff e8 25 8f ed fd 49 8d 9d 88 04 00 00 e9
RSP: 0018:ffffc9000b9d6ff8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff888074205690 RCX: ffffffff814db209
RDX: ffff888025118000 RSI: ffffffff814db216 RDI: 0000000000000001
RBP: ffff8880742056ea R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: fffffffffffcb000 R12: 0000000000001000
R13: ffff88806f544000 R14: 0000000000000001 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020828000 CR3: 00000000276b7000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 btrfs_alloc_tree_block+0x1e0/0x12c0 fs/btrfs/extent-tree.c:5114
 btrfs_force_cow_block+0x3e5/0x19e0 fs/btrfs/ctree.c:563
 btrfs_cow_block+0x2b6/0xb30 fs/btrfs/ctree.c:741
 btrfs_search_slot+0x11bd/0x2fd0 fs/btrfs/ctree.c:2095
 btrfs_lookup_file_extent+0xcb/0x110 fs/btrfs/file-item.c:270
 btrfs_drop_extents+0x433/0x2bd0 fs/btrfs/file.c:251
 insert_reserved_file_extent+0x3a8/0x950 fs/btrfs/inode.c:2898
 insert_ordered_extent_file_extent fs/btrfs/inode.c:3005 [inline]
 btrfs_finish_one_ordered+0x12dc/0x20d0 fs/btrfs/inode.c:3113
 btrfs_work_helper+0x210/0xbf0 fs/btrfs/async-thread.c:315
 process_one_work+0x886/0x15d0 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
 kthread+0x2c6/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>