loop0: detected capacity change from 0 to 4096 ntfs3: loop0: Different NTFS' sector size (4096) and media sector size (512) ============================================ WARNING: possible recursive locking detected 5.15.110-syzkaller #0 Not tainted -------------------------------------------- syz-executor469/3963 is trying to acquire lock: ffff0000dfc89e80 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1107 [inline] ffff0000dfc89e80 (&ni->ni_lock/4){+.+.}-{3:3}, at: mi_read+0x278/0x488 fs/ntfs3/record.c:148 but task is already holding lock: ffff0000dfc8e840 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1107 [inline] ffff0000dfc8e840 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_lookup+0xf4/0x1a4 fs/ntfs3/namei.c:82 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-executor469/3963: #0: ffff0000dfc8eae0 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline] #0: ffff0000dfc8eae0 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow+0x50/0x84 fs/namei.c:1675 #1: ffff0000dfc8e840 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1107 [inline] #1: ffff0000dfc8e840 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_lookup+0xf4/0x1a4 fs/ntfs3/namei.c:82 stack backtrace: CPU: 1 PID: 3963 Comm: syz-executor469 Not tainted 5.15.110-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 __lock_acquire+0x62b4/0x7620 kernel/locking/lockdep.c:5011 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622 __mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 ni_lock fs/ntfs3/ntfs_fs.h:1107 [inline] mi_read+0x278/0x488 fs/ntfs3/record.c:148 ntfs_read_mft fs/ntfs3/inode.c:69 [inline] ntfs_iget5+0x344/0x2b30 fs/ntfs3/inode.c:517 dir_search_u+0x298/0x324 fs/ntfs3/dir.c:264 ntfs_lookup+0x104/0x1a4 fs/ntfs3/namei.c:83 __lookup_slow+0x250/0x388 fs/namei.c:1659 lookup_slow+0x60/0x84 fs/namei.c:1676 walk_component+0x394/0x4cc fs/namei.c:1972 lookup_last fs/namei.c:2427 [inline] path_lookupat+0x13c/0x3d0 fs/namei.c:2451 filename_lookup+0x1c4/0x4c8 fs/namei.c:2480 user_path_at_empty+0x5c/0x1a4 fs/namei.c:2853 user_path_at include/linux/namei.h:57 [inline] path_setxattr+0xbc/0x258 fs/xattr.c:625 __do_sys_setxattr fs/xattr.c:646 [inline] __se_sys_setxattr fs/xattr.c:642 [inline] __arm64_sys_setxattr+0xbc/0xd8 fs/xattr.c:642 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584