loop0: detected capacity change from 0 to 4096 ntfs3: loop0: Different NTFS sector size (2048) and media sector size (512). ntfs3: loop0: ino=1b, "file0" ntfs_iget5 ============================================ WARNING: possible recursive locking detected 6.6.0-rc2-syzkaller-00027-g5d2f53532ecc #0 Not tainted -------------------------------------------- syz-executor265/5035 is trying to acquire lock: ffff8880761a8100 (&ni->ni_lock#2){+.+.}-{3:3}, at: ntfs_set_state+0x212/0x730 fs/ntfs3/fsntfs.c:946 but task is already holding lock: ffff8880761af700 (&ni->ni_lock#2){+.+.}-{3:3}, at: ni_trylock fs/ntfs3/ntfs_fs.h:1144 [inline] ffff8880761af700 (&ni->ni_lock#2){+.+.}-{3:3}, at: ni_write_inode+0x163/0x1080 fs/ntfs3/frecord.c:3256 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&ni->ni_lock#2); lock(&ni->ni_lock#2); *** DEADLOCK *** May be due to missing lock nesting notation 3 locks held by syz-executor265/5035: #0: ffff8880201a2410 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:403 #1: ffff8880761af9a0 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline] #1: ffff8880761af9a0 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: do_truncate+0x20c/0x300 fs/open.c:64 #2: ffff8880761af700 (&ni->ni_lock#2){+.+.}-{3:3}, at: ni_trylock fs/ntfs3/ntfs_fs.h:1144 [inline] #2: ffff8880761af700 (&ni->ni_lock#2){+.+.}-{3:3}, at: ni_write_inode+0x163/0x1080 fs/ntfs3/frecord.c:3256 stack backtrace: CPU: 0 PID: 5035 Comm: syz-executor265 Not tainted 6.6.0-rc2-syzkaller-00027-g5d2f53532ecc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 check_deadlock kernel/locking/lockdep.c:3062 [inline] validate_chain kernel/locking/lockdep.c:3855 [inline] __lock_acquire+0x6a81/0x7f70 kernel/locking/lockdep.c:5136 lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5753 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x136/0xd60 kernel/locking/mutex.c:747 ntfs_set_state+0x212/0x730 fs/ntfs3/fsntfs.c:946 ntfs_iget5+0x3b0/0x38e0 fs/ntfs3/inode.c:535 ni_update_parent+0x806/0xc80 fs/ntfs3/frecord.c:3212 ni_write_inode+0xe48/0x1080 fs/ntfs3/frecord.c:3312 ntfs_truncate fs/ntfs3/file.c:407 [inline] ntfs3_setattr+0x725/0xae0 fs/ntfs3/file.c:682 notify_change+0xb99/0xe60 fs/attr.c:499 do_truncate+0x220/0x300 fs/open.c:66 vfs_truncate+0x2e1/0x3a0 fs/open.c:112 do_sys_truncate+0xde/0x190 fs/open.c:135 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f03ad8735f9 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:00007ffd3e94d2c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004c RAX: ffffffffffffffda RBX: 000