ntfs: volume version 3.1. ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.5/322 is trying to acquire lock: 0000000007788470 (&ni->mrec_lock){+.+.}, at: map_mft_record+0x3c/0xc70 fs/ntfs/mft.c:168 but task is already holding lock: 00000000ad47ea48 (&rl->lock){++++}, at: ntfs_truncate+0x1a2/0x2820 fs/ntfs/inode.c:2390 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&rl->lock){++++}: ntfs_read_block fs/ntfs/aops.c:265 [inline] ntfs_readpage+0x1909/0x21b0 fs/ntfs/aops.c:452 do_read_cache_page+0x533/0x1170 mm/filemap.c:2828 read_mapping_page include/linux/pagemap.h:402 [inline] ntfs_map_page fs/ntfs/aops.h:89 [inline] ntfs_sync_mft_mirror+0x24f/0x1d00 fs/ntfs/mft.c:494 write_mft_record_nolock+0x13d2/0x16c0 fs/ntfs/mft.c:801 write_mft_record fs/ntfs/mft.h:109 [inline] __ntfs_write_inode+0x609/0xe10 fs/ntfs/inode.c:3064 write_inode fs/fs-writeback.c:1244 [inline] __writeback_single_inode+0x733/0x11d0 fs/fs-writeback.c:1442 writeback_sb_inodes+0x537/0xef0 fs/fs-writeback.c:1647 wb_writeback+0x28d/0xcc0 fs/fs-writeback.c:1820 wb_do_writeback fs/fs-writeback.c:1965 [inline] wb_workfn+0x29b/0x1250 fs/fs-writeback.c:2006 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 -> #0 (&ni->mrec_lock){+.+.}: syz-executor.4 (328): drop_caches: 1 __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 map_mft_record+0x3c/0xc70 fs/ntfs/mft.c:168 ntfs_truncate+0x202/0x2820 fs/ntfs/inode.c:2395 ntfs_truncate_vfs fs/ntfs/inode.c:2875 [inline] ntfs_setattr+0x1b6/0x620 fs/ntfs/inode.c:2925 notify_change+0x70b/0xfc0 fs/attr.c:334 do_truncate+0x134/0x1f0 fs/open.c:63 handle_truncate fs/namei.c:3009 [inline] do_last fs/namei.c:3427 [inline] path_openat+0x2308/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&rl->lock); lock(&ni->mrec_lock); lock(&rl->lock); lock(&ni->mrec_lock); *** DEADLOCK *** 3 locks held by syz-executor.5/322: #0: 00000000d910e75a (sb_writers#31){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 00000000d910e75a (sb_writers#31){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 000000006a99cad3 (&sb->s_type->i_mutex_key#39){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 000000006a99cad3 (&sb->s_type->i_mutex_key#39){+.+.}, at: do_truncate+0x125/0x1f0 fs/open.c:61 syz-executor.3 (318): drop_caches: 1 #2: 00000000ad47ea48 (&rl->lock){++++}, at: ntfs_truncate+0x1a2/0x2820 fs/ntfs/inode.c:2390 stack backtrace: CPU: 0 PID: 322 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1222 check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1979 [inline] validate_chain kernel/locking/lockdep.c:2420 [inline] __lock_acquire+0x30c9/0x3ff0 kernel/locking/lockdep.c:3416 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 map_mft_record+0x3c/0xc70 fs/ntfs/mft.c:168 ntfs_truncate+0x202/0x2820 fs/ntfs/inode.c:2395 syz-executor.4 (324): drop_caches: 1 ntfs_truncate_vfs fs/ntfs/inode.c:2875 [inline] ntfs_setattr+0x1b6/0x620 fs/ntfs/inode.c:2925 notify_change+0x70b/0xfc0 fs/attr.c:334 do_truncate+0x134/0x1f0 fs/open.c:63 handle_truncate fs/namei.c:3009 [inline] do_last fs/namei.c:3427 [inline] path_openat+0x2308/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f1fdef550d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007f1fdd4c7168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f1fdf074f80 RCX: 00007f1fdef550d9 RDX: 0000000000000000 RSI: 0000000000000088 RDI: 00000000200008c0 RBP: 00007f1fdefb0ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffb0cf519f R14: 00007f1fdd4c7300 R15: 0000000000022000 syz-executor.4 (316): drop_caches: 1 syz-executor.3 (318): drop_caches: 1 syz-executor.4 (328): drop_caches: 1 syz-executor.4 (324): drop_caches: 1 __ntfs_error: 3 callbacks suppressed ntfs: (device loop5): write_mft_record_nolock(): Failed to apply mst fixups! ntfs: (device loop5): __ntfs_write_inode(): Failed (error 22): Run chkdsk. ntfs: (device loop5): ntfs_put_super(): Volume has errors. Leaving volume marked dirty. Run chkdsk. syz-executor.4 (316): drop_caches: 1 syz-executor.1 (32721): drop_caches: 1 syz-executor.1 (32721): drop_caches: 1 ntfs: volume version 3.1. ntfs: (device loop5): write_mft_record_nolock(): Failed to apply mst fixups! ntfs: (device loop5): __ntfs_write_inode(): Failed (error 22): Run chkdsk. ntfs: (device loop5): ntfs_put_super(): Volume has errors. Leaving volume marked dirty. Run chkdsk. syz-executor.4 (364): drop_caches: 1 syz-executor.3 (357): drop_caches: 1 syz-executor.1 (367): drop_caches: 1 ntfs: volume version 3.1. syz-executor.4 (364): drop_caches: 1 syz-executor.3 (357): drop_caches: 1 syz-executor.1 (367): drop_caches: 1 syz-executor.4 (457): drop_caches: 1 syz-executor.4 (457): drop_caches: 1 syz-executor.4 (461): drop_caches: 1 syz-executor.4 (461): drop_caches: 1 syz-executor.1 (439): drop_caches: 1 syz-executor.1 (439): drop_caches: 1 syz-executor.0 (506): drop_caches: 1 syz-executor.0 (511): drop_caches: 1 syz-executor.3 (550): drop_caches: 1 syz-executor.0 (506): drop_caches: 1 syz-executor.0 (511): drop_caches: 1 syz-executor.3 (550): drop_caches: 1 syz-executor.0 (596): drop_caches: 1 syz-executor.3 (629): drop_caches: 1 syz-executor.0 (596): drop_caches: 1 syz-executor.3 (629): drop_caches: 1 syz-executor.0 (671): drop_caches: 1 syz-executor.0 (666): drop_caches: 1 syz-executor.0 (671): drop_caches: 1 syz-executor.0 (666): drop_caches: 1 syz-executor.0 (741): drop_caches: 1 syz-executor.0 (741): drop_caches: 1 syz-executor.1 (767): drop_caches: 1 syz-executor.0 (788): drop_caches: 1 syz-executor.3 (829): drop_caches: 1 syz-executor.0 (788): drop_caches: 1 syz-executor.3 (829): drop_caches: 1 syz-executor.1 (767): drop_caches: 1 syz-executor.3 (855): drop_caches: 1 syz-executor.1 (864): drop_caches: 1 syz-executor.0 (860): drop_caches: 1 syz-executor.3 (855): drop_caches: 1 syz-executor.1 (864): drop_caches: 1 syz-executor.0 (860): drop_caches: 1 syz-executor.4 (949): drop_caches: 1 syz-executor.3 (960): drop_caches: 1 syz-executor.0 (962): drop_caches: 1 syz-executor.0 (976): drop_caches: 1 syz-executor.0 (980): drop_caches: 1 syz-executor.4 (949): drop_caches: 1 syz-executor.3 (960): drop_caches: 1 syz-executor.0 (962): drop_caches: 1 syz-executor.0 (980): drop_caches: 1 syz-executor.0 (976): drop_caches: 1 syz-executor.4 (1018): drop_caches: 1 syz-executor.4 (1018): drop_caches: 1 syz-executor.0 (1041): drop_caches: 1 syz-executor.0 (1043): drop_caches: 1 syz-executor.0 (1042): drop_caches: 1