ntfs3: loop0: Different NTFS sector size (4096) and media sector size (512). ntfs3: loop0: Mark volume as dirty due to NTFS errors ============================================ WARNING: possible recursive locking detected 6.7.0-rc8-syzkaller-g0802e17d9aca #0 Not tainted -------------------------------------------- syz-executor416/6094 is trying to acquire lock: ffff0000dc3f9e80 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline] ffff0000dc3f9e80 (&ni->ni_lock/4){+.+.}-{3:3}, at: mi_read+0x26c/0x4d8 fs/ntfs3/record.c:148 but task is already holding lock: ffff0000dc3fe840 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline] ffff0000dc3fe840 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_lookup+0xf8/0x1f8 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-executor416/6094: #0: ffff0000dc3feae0 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline] #0: ffff0000dc3feae0 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: lookup_slow+0x50/0x84 fs/namei.c:1710 #1: ffff0000dc3fe840 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline] #1: ffff0000dc3fe840 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_lookup+0xf8/0x1f8 fs/ntfs3/namei.c:84 stack backtrace: CPU: 1 PID: 6094 Comm: syz-executor416 Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106 dump_stack+0x1c/0x28 lib/dump_stack.c:113 print_deadlock_bug+0x4e4/0x660 kernel/locking/lockdep.c:3012 check_deadlock kernel/locking/lockdep.c:3062 [inline] validate_chain kernel/locking/lockdep.c:3856 [inline] __lock_acquire+0x5fe4/0x763c kernel/locking/lockdep.c:5137 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5754 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline] mi_read+0x26c/0x4d8 fs/ntfs3/record.c:148 ntfs_read_mft fs/ntfs3/inode.c:70 [inline] ntfs_iget5+0x360/0x2bbc fs/ntfs3/inode.c:534 dir_search_u+0x298/0x324 fs/ntfs3/dir.c:264 ntfs_lookup+0x108/0x1f8 fs/ntfs3/namei.c:85 __lookup_slow+0x250/0x374 fs/namei.c:1694 lookup_slow+0x60/0x84 fs/namei.c:1711 walk_component+0x280/0x36c fs/namei.c:2002 lookup_last fs/namei.c:2459 [inline] path_lookupat+0x13c/0x3d0 fs/namei.c:2483 filename_lookup+0x1d4/0x4e0 fs/namei.c:2512 user_path_at_empty+0x5c/0x84 fs/namei.c:2911 user_path_at include/linux/namei.h:57 [inline] path_getxattr+0xe8/0x388 fs/xattr.c:785 __do_sys_getxattr fs/xattr.c:800 [inline] __se_sys_getxattr fs/xattr.c:797 [inline] __arm64_sys_getxattr+0xa0/0xb8 fs/xattr.c:797 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595