hfsplus: xattr searching failed
hfsplus: xattr searching failed
hfsplus: xattr searching failed
============================================
WARNING: possible recursive locking detected
6.1.0-rc8-syzkaller-33330-ga5541c0811a0 #0 Not tainted
--------------------------------------------
syz-executor631/3072 is trying to acquire lock:
ffff0000cb589488 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x17c/0x8a4 fs/hfsplus/extents.c:260

but task is already holding lock:
ffff0000cb58a808 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x8c/0x88c fs/hfsplus/extents.c:457

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

4 locks held by syz-executor631/3072:
 #0: ffff0000c4ddd460 (sb_writers#8){.+.+}-{0:0}, at: vfs_writev fs/read_write.c:933 [inline]
 #0: ffff0000c4ddd460 (sb_writers#8){.+.+}-{0:0}, at: do_pwritev+0x11c/0x1e8 fs/read_write.c:1031
 #1: ffff0000cb58aa00 (&sb->s_type->i_mutex_key#16){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #1: ffff0000cb58aa00 (&sb->s_type->i_mutex_key#16){+.+.}-{3:3}, at: generic_file_write_iter+0x3c/0x168 mm/filemap.c:3910
 #2: ffff0000cb58a808 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x8c/0x88c fs/hfsplus/extents.c:457
 #3: ffff0000c9f3b0f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_allocate+0x60/0x5e4 fs/hfsplus/bitmap.c:35

stack backtrace:
CPU: 1 PID: 3072 Comm: syz-executor631 Not tainted 6.1.0-rc8-syzkaller-33330-ga5541c0811a0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call trace:
 dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:156
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:163
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x104/0x16c lib/dump_stack.c:106
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 __lock_acquire+0x808/0x3084
 lock_acquire+0x100/0x1f8 kernel/locking/lockdep.c:5668
 __mutex_lock_common+0xd4/0xca8 kernel/locking/mutex.c:603
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
 hfsplus_get_block+0x17c/0x8a4 fs/hfsplus/extents.c:260
 block_read_full_folio+0x188/0x8c0 fs/buffer.c:2271
 hfsplus_read_folio+0x28/0x38 fs/hfsplus/inode.c:28
 filemap_read_folio+0xc4/0x468 mm/filemap.c:2407
 do_read_cache_folio+0x1c8/0x588 mm/filemap.c:3534
 do_read_cache_page mm/filemap.c:3576 [inline]
 read_cache_page+0x40/0x174 mm/filemap.c:3585
 read_mapping_page include/linux/pagemap.h:756 [inline]
 hfsplus_block_allocate+0x80/0x5e4 fs/hfsplus/bitmap.c:37
 hfsplus_file_extend+0x560/0x88c fs/hfsplus/extents.c:468
 hfsplus_get_block+0x1c0/0x8a4 fs/hfsplus/extents.c:245
 __block_write_begin_int+0x23c/0x9d4 fs/buffer.c:1991
 __block_write_begin fs/buffer.c:2041 [inline]
 block_write_begin+0x74/0x14c fs/buffer.c:2102
 cont_write_begin+0xf4/0x11c fs/buffer.c:2456
 hfsplus_write_begin+0x64/0xac fs/hfsplus/inode.c:52
 generic_perform_write+0xf0/0x2cc mm/filemap.c:3753
 __generic_file_write_iter+0xd8/0x21c mm/filemap.c:3881
 generic_file_write_iter+0x6c/0x168 mm/filemap.c:3913
 do_iter_write+0x318/0x560 fs/read_write.c:861
 vfs_writev fs/read_write.c:934 [inline]
 do_pwritev+0x130/0x1e8 fs/read_write.c:1031
 __do_sys_pwritev2 fs/read_write.c:1090 [inline]
 __se_sys_pwritev2 fs/read_write.c:1081 [inline]
 __arm64_sys_pwritev2+0x5c/0x90 fs/read_write.c:1081
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall arch/arm64/kernel/syscall.c:52 [inline]
 el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x48/0x140 arch/arm64/kernel/syscall.c:197
 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584