memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5000 'syz-executor206' 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 6.4.0-rc6-syzkaller-00195-g40f71e7cd3c6 #0 Not tainted -------------------------------------------- syz-executor206/5000 is trying to acquire lock: ffff888077710100 (&ni->ni_lock#2){+.+.}-{3:3}, at: ntfs_set_state fs/ntfs3/fsntfs.c:945 [inline] ffff888077710100 (&ni->ni_lock#2){+.+.}-{3:3}, at: ntfs_set_state+0x1d5/0x700 fs/ntfs3/fsntfs.c:919 but task is already holding lock: ffff888077717700 (&ni->ni_lock#2){+.+.}-{3:3}, at: ni_trylock fs/ntfs3/ntfs_fs.h:1141 [inline] ffff888077717700 (&ni->ni_lock#2){+.+.}-{3:3}, at: ni_write_inode+0x1c0/0x30e0 fs/ntfs3/frecord.c:3252 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-executor206/5000: #0: ffff88807d56e460 (sb_writers#9){.+.+}-{0:0}, at: vfs_truncate+0xee/0x4c0 fs/open.c:85 #1: ffff8880777179a0 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline] #1: ffff8880777179a0 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: do_truncate+0x131/0x200 fs/open.c:64 #2: ffff888077717700 (&ni->ni_lock#2){+.+.}-{3:3}, at: ni_trylock fs/ntfs3/ntfs_fs.h:1141 [inline] #2: ffff888077717700 (&ni->ni_lock#2){+.+.}-{3:3}, at: ni_write_inode+0x1c0/0x30e0 fs/ntfs3/frecord.c:3252 stack backtrace: CPU: 0 PID: 5000 Comm: syz-executor206 Not tainted 6.4.0-rc6-syzkaller-00195-g40f71e7cd3c6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 print_deadlock_bug kernel/locking/lockdep.c:3006 [inline] check_deadlock kernel/locking/lockdep.c:3049 [inline] validate_chain kernel/locking/lockdep.c:3834 [inline] __lock_acquire+0x13eb/0x5f30 kernel/locking/lockdep.c:5088 lock_acquire kernel/locking/lockdep.c:5705 [inline] lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5670 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x12f/0x1350 kernel/locking/mutex.c:747 ntfs_set_state fs/ntfs3/fsntfs.c:945 [inline] ntfs_set_state+0x1d5/0x700 fs/ntfs3/fsntfs.c:919 ntfs_iget5+0x240/0x3670 fs/ntfs3/inode.c:533 ni_update_parent fs/ntfs3/frecord.c:3208 [inline] ni_write_inode+0x1893/0x30e0 fs/ntfs3/frecord.c:3307 ntfs_truncate fs/ntfs3/file.c:407 [inline] ntfs3_setattr+0x756/0xc30 fs/ntfs3/file.c:682 notify_change+0xb2c/0x1180 fs/attr.c:483 do_truncate+0x143/0x200 fs/open.c:66 vfs_truncate+0x3df/0x4c0 fs/open.c:112 do_sys_truncate.part.0+0x11e/0x140 fs/open.c:135 do_sys_truncate fs/open.c:129 [inline] __do_sys_truncate fs/open.c:147 [inline] __se_sys_truncate fs/open.c:145 [inline] __x64_sys_truncate+0x6d/0xa0 fs/open.c:145 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f736bf16799 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe73c703f8 EFLAGS: 00000246 ORIG_RAX: 000000000000004c RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f73