REISERFS (device loop0): Remounting filesystem read-only
REISERFS error (device loop0): vs-13080 reiserfs_new_directory: i/o failure occurred creating new directory
============================================
WARNING: possible recursive locking detected
syzkaller #0 Not tainted
--------------------------------------------
syz.0.16/4946 is trying to acquire lock:
ffff0000ed918980 (&type->i_mutex_dir_key#8/3){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline]
ffff0000ed918980 (&type->i_mutex_dir_key#8/3){+.+.}-{3:3}, at: open_xa_root fs/reiserfs/xattr.c:127 [inline]
ffff0000ed918980 (&type->i_mutex_dir_key#8/3){+.+.}-{3:3}, at: open_xa_dir+0x124/0x598 fs/reiserfs/xattr.c:152

but task is already holding lock:
ffff0000ed91a400 (&type->i_mutex_dir_key#8/3){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline]
ffff0000ed91a400 (&type->i_mutex_dir_key#8/3){+.+.}-{3:3}, at: open_xa_dir+0x348/0x598 fs/reiserfs/xattr.c:160

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

       CPU0
       ----
  lock(&type->i_mutex_dir_key#8/3);
  lock(&type->i_mutex_dir_key#8/3);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

4 locks held by syz.0.16/4946:
 #0: ffff0000d80b6460 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:386
 #1: ffff0000ed919020 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
 #1: ffff0000ed919020 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: vfs_setxattr+0x138/0x2ac fs/xattr.c:302
 #2: ffff0000ed91a400 (&type->i_mutex_dir_key#8/3){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline]
 #2: ffff0000ed91a400 (&type->i_mutex_dir_key#8/3){+.+.}-{3:3}, at: open_xa_dir+0x348/0x598 fs/reiserfs/xattr.c:160
 #3: ffff0000dc7f8090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock_nested+0x68/0xd8 fs/reiserfs/lock.c:78

stack backtrace:
CPU: 0 PID: 4946 Comm: syz.0.16 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call trace:
 dump_backtrace+0x0/0x458 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 __lock_acquire+0x15bc/0x67ec kernel/locking/lockdep.c:-1
 lock_acquire+0x1f4/0x618 kernel/locking/lockdep.c:5623
 down_write_nested+0xc0/0x130 kernel/locking/rwsem.c:1667
 inode_lock_nested include/linux/fs.h:822 [inline]
 open_xa_root fs/reiserfs/xattr.c:127 [inline]
 open_xa_dir+0x124/0x598 fs/reiserfs/xattr.c:152
 reiserfs_for_each_xattr+0x18c/0x6d8 fs/reiserfs/xattr.c:252
 reiserfs_delete_xattrs+0x2c/0xa4 fs/reiserfs/xattr.c:364
 reiserfs_evict_inode+0x1f0/0x408 fs/reiserfs/inode.c:53
 evict+0x3e0/0x828 fs/inode.c:647
 iput_final fs/inode.c:1769 [inline]
 iput+0x6ac/0x764 fs/inode.c:1795
 reiserfs_new_inode+0xab0/0x13ac fs/reiserfs/inode.c:2164
 reiserfs_mkdir+0x4dc/0x7bc fs/reiserfs/namei.c:845
 xattr_mkdir fs/reiserfs/xattr.c:76 [inline]
 open_xa_dir+0x48c/0x598 fs/reiserfs/xattr.c:167
 xattr_lookup+0x3c/0x268 fs/reiserfs/xattr.c:395
 reiserfs_xattr_set_handle+0xe0/0xb44 fs/reiserfs/xattr.c:540
 reiserfs_xattr_set+0x398/0x4cc fs/reiserfs/xattr.c:640
 trusted_set+0x98/0xec fs/reiserfs/xattr_trusted.c:31
 __vfs_setxattr+0x384/0x3a0 fs/xattr.c:182
 __vfs_setxattr_noperm+0x120/0x564 fs/xattr.c:216
 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:277
 vfs_setxattr+0x158/0x2ac fs/xattr.c:303
 do_setxattr fs/xattr.c:588 [inline]
 setxattr+0x278/0x2f8 fs/xattr.c:611
 path_setxattr+0x130/0x260 fs/xattr.c:630
 __do_sys_lsetxattr fs/xattr.c:653 [inline]
 __se_sys_lsetxattr fs/xattr.c:649 [inline]
 __arm64_sys_lsetxattr+0xbc/0xd8 fs/xattr.c:649
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584