============================================
WARNING: possible recursive locking detected
6.9.0-rc6-syzkaller-00053-g0106679839f7 #0 Not tainted
--------------------------------------------
syz-executor230/5194 is trying to acquire lock:
ffff888032119e80 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1123 [inline]
ffff888032119e80 (&ni->ni_lock/4){+.+.}-{3:3}, at: mi_read+0x466/0x660 fs/ntfs3/record.c:148
but task is already holding lock:
ffff88803211d980 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1123 [inline]
ffff88803211d980 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_lookup+0x1b8/0x2a0 fs/ntfs3/namei.c:84
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&ni->ni_lock/4);
lock(&ni->ni_lock/4);
*** DEADLOCK ***
May be due to missing lock nesting notation
2 locks held by syz-executor230/5194:
#0: ffff88803211dc20 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
#0: ffff88803211dc20 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow fs/namei.c:1708 [inline]
#0: ffff88803211dc20 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: walk_component+0x342/0x5b0 fs/namei.c:2004
#1: ffff88803211d980 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1123 [inline]
#1: ffff88803211d980 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_lookup+0x1b8/0x2a0 fs/ntfs3/namei.c:84
stack backtrace:
CPU: 3 PID: 5194 Comm: syz-executor230 Not tainted 6.9.0-rc6-syzkaller-00053-g0106679839f7 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
check_deadlock kernel/locking/lockdep.c:3062 [inline]
validate_chain kernel/locking/lockdep.c:3856 [inline]
__lock_acquire+0x20e6/0x3b30 kernel/locking/lockdep.c:5137
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
__mutex_lock_common kernel/locking/mutex.c:608 [inline]
__mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752
ni_lock fs/ntfs3/ntfs_fs.h:1123 [inline]
mi_read+0x466/0x660 fs/ntfs3/record.c:148
ntfs_read_mft fs/ntfs3/inode.c:70 [inline]
ntfs_iget5+0x4c7/0x3950 fs/ntfs3/inode.c:538
dir_search_u+0x162/0x3d0 fs/ntfs3/dir.c:264
ntfs_lookup+0x1c5/0x2a0 fs/ntfs3/namei.c:85
__lookup_slow+0x24f/0x460 fs/namei.c:1692
lookup_slow fs/namei.c:1709 [inline]
walk_component+0x350/0x5b0 fs/namei.c:2004
lookup_last fs/namei.c:2461 [inline]
path_lookupat+0x17f/0x770 fs/namei.c:2485
filename_lookup+0x1e5/0x5b0 fs/namei.c:2514
user_path_at_empty+0x42/0x60 fs/namei.c:2921
user_path_at include/linux/namei.h:57 [inline]
path_setxattr+0xa5/0x1e0 fs/xattr.c:666
__do_sys_setxattr fs/xattr.c:687 [inline]
__se_sys_setxattr fs/xattr.c:683 [inline]
__x64_sys_setxattr+0xc4/0x160 fs/xattr.c:683
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc47b177639
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffede214bf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007fc47b177639
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180
RBP: 00007fc47b209610 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffede214dc8 R14: 0000000000000001 R15: 0000000000000001
</TASK>