openvswitch: netlink: Flow actions may not be safe on all matching packets.
netem: change failed
batadv0: entered promiscuous mode
batadv_slave_0: entered promiscuous mode
batadv_slave_0: left promiscuous mode
batadv0: left promiscuous mode
============================================
WARNING: possible recursive locking detected
6.17.0-rc1-syzkaller #0 Not tainted
--------------------------------------------
syz.0.0/5353 is trying to acquire lock:
ffff888052dc8108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 fs/hfsplus/extents.c:455

but task is already holding lock:
ffff888052dc8e88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 fs/hfsplus/extents.c:455

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

       CPU0
       ----
  lock(&HFSPLUS_I(inode)->extents_lock);
  lock(&HFSPLUS_I(inode)->extents_lock);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

6 locks held by syz.0.0/5353:
 #0: ffff88801197a428 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557
 #1: ffff888052dca4b8 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline]
 #1: ffff888052dca4b8 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: vfs_removexattr+0x6c/0x1b0 fs/xattr.c:574
 #2: ffff8880003aa0b0 (&tree->tree_lock){+.+.}-{4:4}, at: hfsplus_find_init+0x15a/0x1d0 fs/hfsplus/bfind.c:28
 #3: ffff8880003a80b0 (&tree->tree_lock/2){+.+.}-{4:4}, at: hfsplus_find_init+0x15a/0x1d0 fs/hfsplus/bfind.c:28
 #4: ffff888052dc8e88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 fs/hfsplus/extents.c:455
 #5: ffff8880003ae0b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x15a/0x1d0 fs/hfsplus/bfind.c:28

stack backtrace:
CPU: 0 UID: 0 PID: 5353 Comm: syz.0.0 Not tainted 6.17.0-rc1-syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_deadlock_bug+0x28b/0x2a0 kernel/locking/lockdep.c:3041
 check_deadlock kernel/locking/lockdep.c:3093 [inline]
 validate_chain+0x1a3f/0x2140 kernel/locking/lockdep.c:3895
 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
 __mutex_lock_common kernel/locking/mutex.c:598 [inline]
 __mutex_lock+0x187/0x1360 kernel/locking/mutex.c:760
 hfsplus_file_extend+0x1fc/0x1990 fs/hfsplus/extents.c:455
 hfsplus_bmap_reserve+0x122/0x500 fs/hfsplus/btree.c:358
 __hfsplus_ext_write_extent+0x28d/0x5b0 fs/hfsplus/extents.c:104
 __hfsplus_ext_cache_extent+0x89/0xe30 fs/hfsplus/extents.c:186
 hfsplus_ext_read_extent fs/hfsplus/extents.c:218 [inline]
 hfsplus_file_extend+0x444/0x1990 fs/hfsplus/extents.c:459
 hfsplus_bmap_reserve+0x122/0x500 fs/hfsplus/btree.c:358
 hfsplus_delete_attr+0x13e/0x2d0 fs/hfsplus/attributes.c:326
 hfsplus_removexattr fs/hfsplus/xattr.c:796 [inline]
 __hfsplus_setxattr+0x768/0x1fe0 fs/hfsplus/xattr.c:279
 __vfs_removexattr+0x431/0x470 fs/xattr.c:518
 __vfs_removexattr_locked+0x1ed/0x230 fs/xattr.c:553
 vfs_removexattr+0x80/0x1b0 fs/xattr.c:575
 removexattr fs/xattr.c:1023 [inline]
 filename_removexattr fs/xattr.c:1052 [inline]
 path_removexattrat+0x35d/0x690 fs/xattr.c:1088
 __do_sys_removexattr fs/xattr.c:1100 [inline]
 __se_sys_removexattr fs/xattr.c:1097 [inline]
 __x64_sys_removexattr+0x62/0x70 fs/xattr.c:1097
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb60298ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb603722038 EFLAGS: 00000246 ORIG_RAX: 00000000000000c5
RAX: ffffffffffffffda RBX: 00007fb602bb5fa0 RCX: 00007fb60298ebe9
RDX: 0000000000000000 RSI: 0000200000000180 RDI: 0000200000000140
RBP: 00007fb602a11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb602bb6038 R14: 00007fb602bb5fa0 R15: 00007ffe288f01c8
 </TASK>