ntfs: (device loop4): parse_options(): Option utf8 is no longer supported, using option nls=utf8. Please use option nls=utf8 in the future and make sure utf8 is compiled either as a module or into the kernel. ntfs: volume version 3.1. syz-executor.0 (12902): drop_caches: 1 ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ kworker/u4:6/9340 is trying to acquire lock: 00000000318113e0 (&rl->lock){++++}, at: ntfs_read_block fs/ntfs/aops.c:265 [inline] 00000000318113e0 (&rl->lock){++++}, at: ntfs_readpage+0x1909/0x21b0 fs/ntfs/aops.c:452 but task is already holding lock: 000000006722e388 (&ni->mrec_lock){+.+.}, at: map_mft_record+0x3c/0xc70 fs/ntfs/mft.c:168 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ni->mrec_lock){+.+.}: 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 -> #0 (&rl->lock){++++}: down_read+0x36/0x80 kernel/locking/rwsem.c:24 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 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/u4:6/9340: #0: 00000000ddfb599c ((wq_completion)"writeback"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000000c2e2b0b ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000006722e388 (&ni->mrec_lock){+.+.}, at: map_mft_record+0x3c/0xc70 fs/ntfs/mft.c:168 stack backtrace: CPU: 0 PID: 9340 Comm: kworker/u4:6 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: writeback wb_workfn (flush-7:4) 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 down_read+0x36/0x80 kernel/locking/rwsem.c:24 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 MTD: Attempt to mount non-MTD device "/dev/loop2" romfs: VFS: Can't find a romfs filesystem on dev loop2. MTD: Attempt to mount non-MTD device "/dev/loop2" romfs: VFS: Can't find a romfs filesystem on dev loop2. BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop5 BTRFS error (device loop5): unsupported checksum algorithm 1 BTRFS error (device loop5): superblock checksum mismatch BTRFS error (device loop5): open_ctree failed audit: type=1800 audit(1672461086.644:24): pid=12983 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="bus" dev="sda1" ino=13903 res=0 syz-executor.0 (12967): drop_caches: 1 syz-executor.0 (12967): drop_caches: 1 ntfs: (device loop4): parse_options(): Option utf8 is no longer supported, using option nls=utf8. Please use option nls=utf8 in the future and make sure utf8 is compiled either as a module or into the kernel. ntfs: volume version 3.1. MTD: Attempt to mount non-MTD device "/dev/loop2" romfs: VFS: Can't find a romfs filesystem on dev loop2. ntfs: (device loop4): parse_options(): Option utf8 is no longer supported, using option nls=utf8. Please use option nls=utf8 in the future and make sure utf8 is compiled either as a module or into the kernel. MTD: Attempt to mount non-MTD device "/dev/loop2" romfs: VFS: Can't find a romfs filesystem on dev loop2. ntfs: volume version 3.1. syz-executor.0 (13036): drop_caches: 1 BTRFS error (device loop5): unsupported checksum algorithm 1 BTRFS error (device loop5): superblock checksum mismatch BTRFS error (device loop5): open_ctree failed syz-executor.0 (13036): drop_caches: 1 audit: type=1800 audit(1672461087.614:25): pid=13038 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="bus" dev="sda1" ino=13943 res=0 syz-executor.0 (13106): drop_caches: 1 syz-executor.0 (13106): drop_caches: 1 BTRFS error (device loop5): unsupported checksum algorithm 1 BTRFS error (device loop5): superblock checksum mismatch BTRFS error (device loop5): open_ctree failed audit: type=1800 audit(1672461088.434:26): pid=13107 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="bus" dev="sda1" ino=13902 res=0 BTRFS error (device loop0): unsupported checksum algorithm 1 BTRFS error (device loop0): superblock checksum mismatch BTRFS error (device loop0): open_ctree failed audit: type=1800 audit(1672461088.954:27): pid=13154 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=13944 res=0 BTRFS error (device loop5): unsupported checksum algorithm 1 BTRFS error (device loop5): superblock checksum mismatch BTRFS error (device loop5): open_ctree failed audit: type=1800 audit(1672461089.164:28): pid=13173 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="bus" dev="sda1" ino=13929 res=0 BTRFS error (device loop0): unsupported checksum algorithm 1 BTRFS error (device loop0): superblock checksum mismatch BTRFS error (device loop0): open_ctree failed audit: type=1800 audit(1672461089.834:29): pid=13209 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=13923 res=0 BTRFS error (device loop0): unsupported checksum algorithm 1 BTRFS error (device loop0): superblock checksum mismatch BTRFS error (device loop0): open_ctree failed audit: type=1800 audit(1672461090.684:30): pid=13293 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=13903 res=0 BTRFS error (device loop0): unsupported checksum algorithm 1 BTRFS error (device loop0): superblock checksum mismatch BTRFS error (device loop0): open_ctree failed audit: type=1800 audit(1672461091.104:31): pid=13388 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=13959 res=0 kvm: vcpu 0: requested 16 ns lapic timer period limited to 200000 ns audit: type=1804 audit(1672461091.604:32): pid=13500 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir1634941523/syzkaller.C8Iup3/179/cgroup.controllers" dev="sda1" ino=13903 res=1 kvm: vcpu 0: requested 16 ns lapic timer period limited to 200000 ns kvm: vcpu 0: requested 16 ns lapic timer period limited to 200000 ns kvm: vcpu 0: requested 16 ns lapic timer period limited to 200000 ns ntfs: volume version 3.1. XFS (loop0): Superblock has unknown read-only compatible features (0x8) enabled. XFS (loop0): Attempted to mount read-only compatible filesystem read-write. XFS (loop0): Filesystem can only be safely mounted read only. XFS (loop0): SB validate failed with error -22. ntfs: volume version 3.1. ntfs: volume version 3.1. XFS (loop3): Superblock has unknown read-only compatible features (0x8) enabled. XFS (loop3): Attempted to mount read-only compatible filesystem read-write. XFS (loop3): Filesystem can only be safely mounted read only. XFS (loop3): SB validate failed with error -22. XFS (loop0): Superblock has unknown read-only compatible features (0x8) enabled. XFS (loop0): Attempted to mount read-only compatible filesystem read-write. XFS (loop0): Filesystem can only be safely mounted read only. XFS (loop0): SB validate failed with error -22. vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: devid(0) speed(4) speed_str(wireless) vhci_hcd vhci_hcd.0: Device attached vhci_hcd: connection closed vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device ntfs: volume version 3.1.