hfsplus: xattr search failed
============================================
WARNING: possible recursive locking detected
4.19.211-syzkaller #0 Not tainted
--------------------------------------------
syz-executor576/8098 is trying to acquire lock:
0000000008fabb1b (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: hfsplus_get_block+0x292/0x960 fs/hfsplus/extents.c:260

but task is already holding lock:
000000007917c690 (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: hfsplus_file_truncate+0x1e2/0x1040 fs/hfsplus/extents.c:576

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-executor576/8098:
 #0: 00000000ce50d166 (sb_writers#11){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline]
 #0: 00000000ce50d166 (sb_writers#11){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360
 #1: 00000000804cd03a (&type->i_mutex_dir_key#7/1){+.+.}, at: inode_lock_nested include/linux/fs.h:783 [inline]
 #1: 00000000804cd03a (&type->i_mutex_dir_key#7/1){+.+.}, at: do_unlinkat+0x27d/0x660 fs/namei.c:4051
 #2: 00000000e1f57ba6 (&sb->s_type->i_mutex_key#17){+.+.}, at: inode_lock include/linux/fs.h:748 [inline]
 #2: 00000000e1f57ba6 (&sb->s_type->i_mutex_key#17){+.+.}, at: vfs_unlink+0xca/0x4e0 fs/namei.c:3993
 #3: 000000003de9d4af (&sbi->vh_mutex){+.+.}, at: hfsplus_unlink+0x140/0x820 fs/hfsplus/dir.c:370
 #4: 000000007917c690 (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: hfsplus_file_truncate+0x1e2/0x1040 fs/hfsplus/extents.c:576
 #5: 000000003ae8d96f (&sbi->alloc_mutex){+.+.}, at: hfsplus_block_free+0xdb/0x5d0 fs/hfsplus/bitmap.c:182

stack backtrace:
CPU: 0 PID: 8098 Comm: syz-executor576 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 print_deadlock_bug kernel/locking/lockdep.c:1764 [inline]
 check_deadlock kernel/locking/lockdep.c:1808 [inline]
 validate_chain kernel/locking/lockdep.c:2404 [inline]
 __lock_acquire.cold+0x121/0x57e kernel/locking/lockdep.c:3416
 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
 __mutex_lock_common kernel/locking/mutex.c:937 [inline]
 __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078
 hfsplus_get_block+0x292/0x960 fs/hfsplus/extents.c:260
 block_read_full_page+0x288/0xd10 fs/buffer.c:2259
 do_read_cache_page+0x533/0x1170 mm/filemap.c:2828
 read_mapping_page include/linux/pagemap.h:402 [inline]
 hfsplus_block_free+0x18b/0x5d0 fs/hfsplus/bitmap.c:185
 hfsplus_free_extents+0x228/0x520 fs/hfsplus/extents.c:363
 hfsplus_file_truncate+0xd96/0x1040 fs/hfsplus/extents.c:591
 hfsplus_delete_inode+0x18d/0x220 fs/hfsplus/inode.c:419
 hfsplus_unlink+0x595/0x820 fs/hfsplus/dir.c:405
 vfs_unlink+0x27d/0x4e0 fs/namei.c:4002
 do_unlinkat+0x3b8/0x660 fs/namei.c:4065
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f2455d70769
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 00 00 90 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd66f60b38 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX