====================================================== WARNING: possible circular locking dependency detected 4.14.305-syzkaller #0 Not tainted ------------------------------------------------------ kworker/u4:6/9430 is trying to acquire lock: (&rl->lock){++++}, at: [] ntfs_read_block fs/ntfs/aops.c:269 [inline] (&rl->lock){++++}, at: [] ntfs_readpage+0x1396/0x1ad0 fs/ntfs/aops.c:456 but task is already holding lock: (&ni->mrec_lock){+.+.}, at: [] map_mft_record+0x2b/0xbe0 fs/ntfs/mft.c:166 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ni->mrec_lock){+.+.}: __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 map_mft_record+0x2b/0xbe0 fs/ntfs/mft.c:166 ntfs_truncate+0x1a6/0x22d0 fs/ntfs/inode.c:2415 ntfs_truncate_vfs fs/ntfs/inode.c:2895 [inline] ntfs_setattr+0x148/0x580 fs/ntfs/inode.c:2945 notify_change+0x56b/0xd10 fs/attr.c:315 do_truncate+0xff/0x1a0 fs/open.c:63 handle_truncate fs/namei.c:3010 [inline] do_last fs/namei.c:3437 [inline] path_openat+0x1dcc/0x2970 fs/namei.c:3571 do_filp_open+0x179/0x3c0 fs/namei.c:3605 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 -> #0 (&rl->lock){++++}: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 down_read+0x36/0x80 kernel/locking/rwsem.c:24 ntfs_read_block fs/ntfs/aops.c:269 [inline] ntfs_readpage+0x1396/0x1ad0 fs/ntfs/aops.c:456 do_read_cache_page+0x38e/0xc10 mm/filemap.c:2713 read_mapping_page include/linux/pagemap.h:398 [inline] ntfs_map_page fs/ntfs/aops.h:89 [inline] ntfs_sync_mft_mirror+0x1f4/0x1560 fs/ntfs/mft.c:490 write_mft_record_nolock+0xece/0x1240 fs/ntfs/mft.c:793 write_mft_record fs/ntfs/mft.h:109 [inline] __ntfs_write_inode+0x58d/0xcc0 fs/ntfs/inode.c:3084 write_inode fs/fs-writeback.c:1241 [inline] __writeback_single_inode+0x6a4/0x1010 fs/fs-writeback.c:1439 writeback_sb_inodes+0x48b/0xd30 fs/fs-writeback.c:1645 wb_writeback+0x243/0xb80 fs/fs-writeback.c:1820 wb_do_writeback fs/fs-writeback.c:1952 [inline] wb_workfn+0x2bd/0xf50 fs/fs-writeback.c:1988 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ni->mrec_lock); lock(&rl->lock); lock(&ni->mrec_lock); lock(&rl->lock); *** DEADLOCK *** 3 locks held by kworker/u4:6/9430: #0: ("writeback"){+.+.}, at: [] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2088 #1: ((&(&wb->dwork)->work)){+.+.}, at: [] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2092 #2: (&ni->mrec_lock){+.+.}, at: [] map_mft_record+0x2b/0xbe0 fs/ntfs/mft.c:166 stack backtrace: CPU: 1 PID: 9430 Comm: kworker/u4:6 Not tainted 4.14.305-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Workqueue: writeback wb_workfn (flush-7:3) Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1258 check_prev_add kernel/locking/lockdep.c:1905 [inline] check_prevs_add kernel/locking/lockdep.c:2022 [inline] validate_chain kernel/locking/lockdep.c:2464 [inline] __lock_acquire+0x2e0e/0x3f20 kernel/locking/lockdep.c:3491 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 down_read+0x36/0x80 kernel/locking/rwsem.c:24 ntfs_read_block fs/ntfs/aops.c:269 [inline] ntfs_readpage+0x1396/0x1ad0 fs/ntfs/aops.c:456 do_read_cache_page+0x38e/0xc10 mm/filemap.c:2713 read_mapping_page include/linux/pagemap.h:398 [inline] ntfs_map_page fs/ntfs/aops.h:89 [inline] ntfs_sync_mft_mirror+0x1f4/0x1560 fs/ntfs/mft.c:490 write_mft_record_nolock+0xece/0x1240 fs/ntfs/mft.c:793 write_mft_record fs/ntfs/mft.h:109 [inline] __ntfs_write_inode+0x58d/0xcc0 fs/ntfs/inode.c:3084 write_inode fs/fs-writeback.c:1241 [inline] __writeback_single_inode+0x6a4/0x1010 fs/fs-writeback.c:1439 writeback_sb_inodes+0x48b/0xd30 fs/fs-writeback.c:1645 wb_writeback+0x243/0xb80 fs/fs-writeback.c:1820 wb_do_writeback fs/fs-writeback.c:1952 [inline] wb_workfn+0x2bd/0xf50 fs/fs-writeback.c:1988 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406 ntfs: volume version 3.1. NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds UDF-fs: error (device loop5): udf_read_tagged: tag checksum failed, block 96: 0x73 != 0x9b UDF-fs: error (device loop5): udf_process_sequence: Block 96 of volume descriptor sequence is corrupted or we could not read it UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) ntfs: volume version 3.1. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: upper fs needs to support d_type. overlayfs: upper fs does not support xattr. BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop1 BTRFS info (device loop1): enabling inode map caching BTRFS warning (device loop1): excessive commit interval 622039222 BTRFS info (device loop1): force zlib compression BTRFS info (device loop1): using free space tree BTRFS info (device loop1): has skinny extents UDF-fs: error (device loop5): udf_read_tagged: tag checksum failed, block 96: 0x73 != 0x9b UDF-fs: error (device loop5): udf_process_sequence: Block 96 of volume descriptor sequence is corrupted or we could not read it UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: upper fs needs to support d_type. overlayfs: upper fs does not support xattr. syz-executor.0 (9653): drop_caches: 1 UDF-fs: error (device loop5): udf_read_tagged: tag checksum failed, block 96: 0x73 != 0x9b UDF-fs: error (device loop5): udf_process_sequence: Block 96 of volume descriptor sequence is corrupted or we could not read it UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: upper fs needs to support d_type. overlayfs: upper fs does not support xattr. BTRFS info (device loop3): enabling inode map caching BTRFS warning (device loop3): excessive commit interval 622039222 BTRFS info (device loop3): force zlib compression BTRFS info (device loop3): using free space tree BTRFS info (device loop3): has skinny extents print_req_error: I/O error, dev loop5, sector 0 syz-executor.0 (9741): drop_caches: 1 UDF-fs: error (device loop5): udf_read_tagged: tag checksum failed, block 96: 0x73 != 0x9b UDF-fs: error (device loop5): udf_process_sequence: Block 96 of volume descriptor sequence is corrupted or we could not read it UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: upper fs needs to support d_type. overlayfs: upper fs does not support xattr. BTRFS info (device loop0): enabling inode map caching BTRFS warning (device loop0): excessive commit interval 622039222 BTRFS info (device loop0): force zlib compression BTRFS info (device loop0): using free space tree BTRFS info (device loop0): has skinny extents UDF-fs: error (device loop5): udf_read_tagged: tag checksum failed, block 96: 0x73 != 0x9b UDF-fs: error (device loop5): udf_process_sequence: Block 96 of volume descriptor sequence is corrupted or we could not read it UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: upper fs needs to support d_type. overlayfs: upper fs does not support xattr. BTRFS info (device loop3): enabling inode map caching BTRFS warning (device loop3): excessive commit interval 622039222 BTRFS info (device loop3): force zlib compression UDF-fs: error (device loop5): udf_read_tagged: tag checksum failed, block 96: 0x73 != 0x9b BTRFS info (device loop3): using free space tree UDF-fs: error (device loop5): udf_process_sequence: Block 96 of volume descriptor sequence is corrupted or we could not read it BTRFS info (device loop3): has skinny extents UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: error (device loop2): udf_read_tagged: tag checksum failed, block 96: 0x73 != 0x9b UDF-fs: error (device loop2): udf_process_sequence: Block 96 of volume descriptor sequence is corrupted or we could not read it overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: upper fs needs to support d_type. UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) overlayfs: upper fs does not support xattr. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: upper fs needs to support d_type. overlayfs: upper fs does not support xattr. UDF-fs: error (device loop5): udf_read_tagged: tag checksum failed, block 96: 0x73 != 0x9b UDF-fs: error (device loop5): udf_process_sequence: Block 96 of volume descriptor sequence is corrupted or we could not read it UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) overlayfs: fs on '.' does not support file handles, falling back to index=off. UDF-fs: error (device loop2): udf_read_tagged: tag checksum failed, block 96: 0x73 != 0x9b overlayfs: upper fs needs to support d_type. UDF-fs: error (device loop2): udf_process_sequence: Block 96 of volume descriptor sequence is corrupted or we could not read it overlayfs: upper fs does not support xattr. UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: upper fs needs to support d_type. overlayfs: upper fs does not support xattr. UDF-fs: error (device loop5): udf_read_tagged: tag checksum failed, block 96: 0x73 != 0x9b UDF-fs: error (device loop5): udf_process_sequence: Block 96 of volume descriptor sequence is corrupted or we could not read it UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: upper fs needs to support d_type. overlayfs: upper fs does not support xattr. UDF-fs: error (device loop2): udf_read_tagged: tag checksum failed, block 96: 0x73 != 0x9b UDF-fs: error (device loop2): udf_process_sequence: Block 96 of volume descriptor sequence is corrupted or we could not read it print_req_error: I/O error, dev loop5, sector 0 BTRFS info (device loop0): enabling inode map caching UDF-fs: error (device loop5): udf_read_tagged: tag checksum failed, block 96: 0x73 != 0x9b UDF-fs: error (device loop5): udf_process_sequence: Block 96 of volume descriptor sequence is corrupted or we could not read it UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: error (device loop3): udf_read_tagged: tag checksum failed, block 96: 0x73 != 0x9b UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: error (device loop3): udf_process_sequence: Block 96 of volume descriptor sequence is corrupted or we could not read it BTRFS warning (device loop0): excessive commit interval 622039222 BTRFS info (device loop0): force zlib compression BTRFS info (device loop0): using free space tree BTRFS info (device loop0): has skinny extents overlayfs: fs on '.' does not support file handles, falling back to index=off. UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: upper fs needs to support d_type. overlayfs: upper fs needs to support d_type. overlayfs: upper fs does not support xattr. overlayfs: upper fs does not support xattr.