====================================================== WARNING: possible circular locking dependency detected 6.5.0-rc5-syzkaller-00362-ga785fd28d31f #0 Not tainted ------------------------------------------------------ syz-executor.2/11969 is trying to acquire lock: ffff88805ca62120 (&wnd->rw_lock/1){+.+.}-{3:3}, at: ntfs_mark_rec_free+0x2f4/0x400 fs/ntfs3/fsntfs.c:742 but task is already holding lock: ffff88804f979860 (&ni->ni_lock){+.+.}-{3:3}, at: ni_trylock fs/ntfs3/ntfs_fs.h:1144 [inline] ffff88804f979860 (&ni->ni_lock){+.+.}-{3:3}, at: ni_write_inode+0x1c3/0x27e0 fs/ntfs3/frecord.c:3256 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&ni->ni_lock){+.+.}-{3:3}: __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x181/0x1340 kernel/locking/mutex.c:747 ntfs_set_state+0x1d2/0x6e0 fs/ntfs3/fsntfs.c:946 attr_set_size+0x139c/0x2ca0 fs/ntfs3/attrib.c:866 ntfs_extend_mft+0x29f/0x430 fs/ntfs3/fsntfs.c:527 ntfs_look_free_mft+0x777/0xdd0 fs/ntfs3/fsntfs.c:590 ni_create_attr_list+0x937/0x1520 fs/ntfs3/frecord.c:876 ni_ins_attr_ext+0x23f/0xaf0 fs/ntfs3/frecord.c:974 ni_insert_attr+0x310/0x870 fs/ntfs3/frecord.c:1141 ni_insert_resident+0xd2/0x3a0 fs/ntfs3/frecord.c:1525 ntfs_set_ea+0xf46/0x13d0 fs/ntfs3/xattr.c:437 ntfs_save_wsl_perm+0x134/0x3d0 fs/ntfs3/xattr.c:946 ntfs3_setattr+0x961/0xb60 fs/ntfs3/file.c:708 notify_change+0x670/0x1160 fs/attr.c:483 chown_common+0x596/0x660 fs/open.c:768 do_fchownat+0x140/0x1f0 fs/open.c:799 __do_sys_chown fs/open.c:819 [inline] __se_sys_chown fs/open.c:817 [inline] __x64_sys_chown+0x7b/0xc0 fs/open.c:817 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #1 (&ni->file.run_lock#2){++++}-{3:3}: down_write+0x93/0x200 kernel/locking/rwsem.c:1573 ntfs_extend_mft+0x138/0x430 fs/ntfs3/fsntfs.c:511 ntfs_look_free_mft+0x777/0xdd0 fs/ntfs3/fsntfs.c:590 ntfs_create_inode+0x32d/0x4170 fs/ntfs3/inode.c:1308 ntfs_atomic_open+0x4d2/0x650 fs/ntfs3/namei.c:425 atomic_open fs/namei.c:3355 [inline] lookup_open.isra.0+0xc44/0x1360 fs/namei.c:3463 open_last_lookups fs/namei.c:3560 [inline] path_openat+0x931/0x29c0 fs/namei.c:3790 do_filp_open+0x1de/0x430 fs/namei.c:3820 do_sys_openat2+0x176/0x1e0 fs/open.c:1407 do_sys_open fs/open.c:1422 [inline] __do_sys_creat fs/open.c:1498 [inline] __se_sys_creat fs/open.c:1492 [inline] __x64_sys_creat+0xcd/0x120 fs/open.c:1492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #0 (&wnd->rw_lock/1){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3142 [inline] check_prevs_add kernel/locking/lockdep.c:3261 [inline] validate_chain kernel/locking/lockdep.c:3876 [inline] __lock_acquire+0x2e3d/0x5de0 kernel/locking/lockdep.c:5144 lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 down_write_nested+0x97/0x200 kernel/locking/rwsem.c:1689 ntfs_mark_rec_free+0x2f4/0x400 fs/ntfs3/fsntfs.c:742 ni_write_inode+0x475/0x27e0 fs/ntfs3/frecord.c:3352 ntfs_truncate fs/ntfs3/file.c:407 [inline] ntfs3_setattr+0x6b5/0xb60 fs/ntfs3/file.c:682 notify_change+0x670/0x1160 fs/attr.c:483 do_truncate+0x15c/0x220 fs/open.c:66 handle_truncate fs/namei.c:3295 [inline] do_open fs/namei.c:3640 [inline] path_openat+0x23f1/0x29c0 fs/namei.c:3793 do_filp_open+0x1de/0x430 fs/namei.c:3820 do_sys_openat2+0x176/0x1e0 fs/open.c:1407 do_sys_open fs/open.c:1422 [inline] __do_sys_creat fs/open.c:1498 [inline] __se_sys_creat fs/open.c:1492 [inline] __x64_sys_creat+0xcd/0x120 fs/open.c:1492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd other info that might help us debug this: Chain exists of: &wnd->rw_lock/1 --> &ni->file.run_lock#2 --> &ni->ni_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ni->ni_lock); lock(&ni->file.run_lock#2); lock(&ni->ni_lock); lock(&wnd->rw_lock/1); *** DEADLOCK *** 3 locks held by syz-executor.2/11969: #0: ffff88802180e410 (sb_writers#20){.+.+}-{0:0}, at: do_open fs/namei.c:3629 [inline] #0: ffff88802180e410 (sb_writers#20){.+.+}-{0:0}, at: path_openat+0x1e7c/0x29c0 fs/namei.c:3793 #1: ffff88804f979b00 (&sb->s_type->i_mutex_key#26){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:771 [inline] #1: ffff88804f979b00 (&sb->s_type->i_mutex_key#26){+.+.}-{3:3}, at: do_truncate+0x14b/0x220 fs/open.c:64 #2: ffff88804f979860 (&ni->ni_lock){+.+.}-{3:3}, at: ni_trylock fs/ntfs3/ntfs_fs.h:1144 [inline] #2: ffff88804f979860 (&ni->ni_lock){+.+.}-{3:3}, at: ni_write_inode+0x1c3/0x27e0 fs/ntfs3/frecord.c:3256 stack backtrace: CPU: 1 PID: 11969 Comm: syz-executor.2 Not tainted 6.5.0-rc5-syzkaller-00362-ga785fd28d31f #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 check_noncircular+0x311/0x3f0 kernel/locking/lockdep.c:2195 check_prev_add kernel/locking/lockdep.c:3142 [inline] check_prevs_add kernel/locking/lockdep.c:3261 [inline] validate_chain kernel/locking/lockdep.c:3876 [inline] __lock_acquire+0x2e3d/0x5de0 kernel/locking/lockdep.c:5144 lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 down_write_nested+0x97/0x200 kernel/locking/rwsem.c:1689 ntfs_mark_rec_free+0x2f4/0x400 fs/ntfs3/fsntfs.c:742 ni_write_inode+0x475/0x27e0 fs/ntfs3/frecord.c:3352 ntfs_truncate fs/ntfs3/file.c:407 [inline] ntfs3_setattr+0x6b5/0xb60 fs/ntfs3/file.c:682 notify_change+0x670/0x1160 fs/attr.c:483 do_truncate+0x15c/0x220 fs/open.c:66 handle_truncate fs/namei.c:3295 [inline] do_open fs/namei.c:3640 [inline] path_openat+0x23f1/0x29c0 fs/namei.c:3793 do_filp_open+0x1de/0x430 fs/namei.c:3820 do_sys_openat2+0x176/0x1e0 fs/open.c:1407 do_sys_open fs/open.c:1422 [inline] __do_sys_creat fs/open.c:1498 [inline] __se_sys_creat fs/open.c:1492 [inline] __x64_sys_creat+0xcd/0x120 fs/open.c:1492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fb5c487cae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb5c567e0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007fb5c499bf80 RCX: 00007fb5c487cae9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 00007fb5c48c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fb5c499bf80 R15: 00007ffec2273b38