============================================
WARNING: possible recursive locking detected
6.5.0-rc1-next-20230714-syzkaller #0 Not tainted
--------------------------------------------
kworker/u4:5/2863 is trying to acquire lock:
ffff88807ef2c0b0 (&tree->tree_lock/1){+.+.}-{3:3}, at: hfsplus_find_init+0x16d/0x200 fs/hfsplus/bfind.c:33

but task is already holding lock:
ffff88807ef2c0b0 (&tree->tree_lock/1){+.+.}-{3:3}, at: hfsplus_find_init+0x16d/0x200 fs/hfsplus/bfind.c:33

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&tree->tree_lock/1);
  lock(&tree->tree_lock/1);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

5 locks held by kworker/u4:5/2863:
 #0: ffff888144e76138 ((wq_completion)writeback){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline]
 #0: ffff888144e76138 ((wq_completion)writeback){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline]
 #0: ffff888144e76138 ((wq_completion)writeback){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline]
 #0: ffff888144e76138 ((wq_completion)writeback){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline]
 #0: ffff888144e76138 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:678 [inline]
 #0: ffff888144e76138 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:705 [inline]
 #0: ffff888144e76138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2570
 #1: ffffc9000c5bfd80 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2574
 #2: ffff88807e042548 (&hip->extents_lock){+.+.}-{3:3}, at: hfsplus_ext_write_extent+0x82/0x200 fs/hfsplus/extents.c:149
 #3: ffff88807ef2c0b0 (&tree->tree_lock/1){+.+.}-{3:3}, at: hfsplus_find_init+0x16d/0x200 fs/hfsplus/bfind.c:33
 #4: ffff88807e040108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1c5/0xf90 fs/hfsplus/extents.c:457

stack backtrace:
CPU: 0 PID: 2863 Comm: kworker/u4:5 Not tainted 6.5.0-rc1-next-20230714-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Workqueue: writeback wb_workfn (flush-7:0)
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 check_deadlock kernel/locking/lockdep.c:3070 [inline]
 validate_chain kernel/locking/lockdep.c:3863 [inline]
 __lock_acquire+0x2971/0x5de0 kernel/locking/lockdep.c:5144
 lock_acquire kernel/locking/lockdep.c:5761 [inline]
 lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726
 __mutex_lock_common kernel/locking/mutex.c:603 [inline]
 __mutex_lock+0x181/0x1340 kernel/locking/mutex.c:747
 hfsplus_find_init+0x16d/0x200 fs/hfsplus/bfind.c:33
 hfsplus_ext_read_extent+0x199/0xb00 fs/hfsplus/extents.c:216
 hfsplus_file_extend+0x699/0xf90 fs/hfsplus/extents.c:461
 hfsplus_bmap_reserve+0x318/0x410 fs/hfsplus/btree.c:358
 __hfsplus_ext_write_extent+0x470/0x5e0 fs/hfsplus/extents.c:104
 hfsplus_ext_write_extent_locked fs/hfsplus/extents.c:139 [inline]
 hfsplus_ext_write_extent_locked fs/hfsplus/extents.c:129 [inline]
 hfsplus_ext_write_extent+0x1c5/0x200 fs/hfsplus/extents.c:150
 hfsplus_write_inode+0x22/0x4f0 fs/hfsplus/super.c:154
 write_inode fs/fs-writeback.c:1456 [inline]
 __writeback_single_inode+0xa81/0xe70 fs/fs-writeback.c:1668
 writeback_sb_inodes+0x599/0x1010 fs/fs-writeback.c:1894
 wb_writeback+0x2a5/0xa90 fs/fs-writeback.c:2070
 wb_do_writeback fs/fs-writeback.c:2217 [inline]
 wb_workfn+0x29c/0xfd0 fs/fs-writeback.c:2257
 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600
 worker_thread+0x687/0x1110 kernel/workqueue.c:2751
 kthread+0x33a/0x430 kernel/kthread.c:389
 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296
RIP: 0000:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>