XFS (loop4): SB validate failed with error -22. ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ kworker/u4:0/28158 is trying to acquire lock: 000000009720d492 (&rl->lock){++++}, at: ntfs_read_block fs/ntfs/aops.c:265 [inline] 000000009720d492 (&rl->lock){++++}, at: ntfs_readpage+0x1909/0x21b0 fs/ntfs/aops.c:452 but task is already holding lock: 000000006e7283a0 (&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/u4:0/28158: #0: 0000000000452dab ((wq_completion)"writeback"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000084615e2 ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000006e7283a0 (&ni->mrec_lock){+.+.}, at: map_mft_record+0x3c/0xc70 fs/ntfs/mft.c:168 stack backtrace: CPU: 0 PID: 28158 Comm: kworker/u4:0 Not tainted 4.19.211-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: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 syz-executor.1 (18928): drop_caches: 1 syz-executor.2 (18929): drop_caches: 1 syz-executor.5 (18966): drop_caches: 1 syz-executor.3 (18985): drop_caches: 1 syz-executor.0 (19002): drop_caches: 1 syz-executor.2 (18996): drop_caches: 1 XFS (loop4): Superblock has unknown read-only compatible features (0x8) enabled. XFS (loop4): Attempted to mount read-only compatible filesystem read-write. XFS (loop3): Superblock has unknown read-only compatible features (0x8) enabled. XFS (loop3): Attempted to mount read-only compatible filesystem read-write. XFS (loop4): Filesystem can only be safely mounted read only. XFS (loop3): Filesystem can only be safely mounted read only. XFS (loop4): SB validate failed with error -22. XFS (loop3): SB validate failed with error -22. syz-executor.1 (19000): drop_caches: 1 syz-executor.5 (19001): drop_caches: 1 syz-executor.2 (19027): drop_caches: 1 syz-executor.5 (19041): drop_caches: 1 syz-executor.0 (19030): drop_caches: 1 XFS (loop3): Superblock has unknown read-only compatible features (0x8) enabled. XFS (loop4): Superblock has unknown read-only compatible features (0x8) enabled. XFS (loop3): Attempted to mount read-only compatible filesystem read-write. XFS (loop4): Attempted to mount read-only compatible filesystem read-write. XFS (loop3): Filesystem can only be safely mounted read only. XFS (loop4): Filesystem can only be safely mounted read only. XFS (loop3): SB validate failed with error -22. XFS (loop4): SB validate failed with error -22. syz-executor.1 (19037): drop_caches: 1 XFS (loop2): Superblock has unknown read-only compatible features (0x8) enabled. XFS (loop2): Attempted to mount read-only compatible filesystem read-write. XFS (loop2): Filesystem can only be safely mounted read only. XFS (loop2): SB validate failed with error -22. syz-executor.5 (19060): drop_caches: 1 syz-executor.0 (19063): drop_caches: 1 kauditd_printk_skb: 7 callbacks suppressed audit: type=1804 audit(1677028635.371:1149): pid=19053 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir3314680694/syzkaller.LGnwVW/2683/bus" dev="sda1" ino=14238 res=1 syz-executor.1 (19087): drop_caches: 1 audit: type=1804 audit(1677028635.731:1150): pid=19056 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir1600370157/syzkaller.AovJAM/2823/bus" dev="sda1" ino=14210 res=1 syz-executor.5 (19109): drop_caches: 1 XFS (loop3): Superblock has unknown read-only compatible features (0x8) enabled. XFS (loop4): Superblock has unknown read-only compatible features (0x8) enabled. XFS (loop4): Attempted to mount read-only compatible filesystem read-write. XFS (loop3): Attempted to mount read-only compatible filesystem read-write. XFS (loop4): Filesystem can only be safely mounted read only. XFS (loop3): Filesystem can only be safely mounted read only. XFS (loop4): SB validate failed with error -22. XFS (loop3): SB validate failed with error -22. syz-executor.0 (19126): drop_caches: 1 syz-executor.1 (19132): drop_caches: 1 XFS (loop2): Superblock has unknown read-only compatible features (0x8) enabled. XFS (loop2): Attempted to mount read-only compatible filesystem read-write. XFS (loop2): Filesystem can only be safely mounted read only. XFS (loop2): SB validate failed with error -22. audit: type=1804 audit(1677028636.931:1151): pid=19113 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir3177819965/syzkaller.LTTqeR/3477/bus" dev="sda1" ino=14292 res=1 audit: type=1804 audit(1677028637.111:1152): pid=19120 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir3314680694/syzkaller.LGnwVW/2684/bus" dev="sda1" ino=14295 res=1 syz-executor.0 (19162): drop_caches: 1 audit: type=1804 audit(1677028637.611:1153): pid=19130 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir1600370157/syzkaller.AovJAM/2824/bus" dev="sda1" ino=13900 res=1 syz-executor.5 (19155): drop_caches: 1 syz-executor.1 (19178): drop_caches: 1 syz-executor.3 (19186): drop_caches: 1 syz-executor.0 (19191): drop_caches: 1 syz-executor.1 (19203): drop_caches: 1 XFS (loop2): Superblock has unknown read-only compatible features (0x8) enabled. XFS (loop2): Attempted to mount read-only compatible filesystem read-write. XFS (loop2): Filesystem can only be safely mounted read only. XFS (loop2): SB validate failed with error -22. syz-executor.5 (19199): drop_caches: 1 syz-executor.4 (19195): drop_caches: 1 syz-executor.3 (19207): drop_caches: 1 audit: type=1804 audit(1677028639.461:1154): pid=19233 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir1600370157/syzkaller.AovJAM/2825/bus" dev="sda1" ino=14299 res=1 syz-executor.5 (19226): drop_caches: 1 syz-executor.1 (19217): drop_caches: 1 syz-executor.0 (19209): drop_caches: 1 syz-executor.4 (19227): drop_caches: 1 syz-executor.3 (19235): drop_caches: 1 syz-executor.1 (19256): drop_caches: 1 syz-executor.0 (19246): drop_caches: 1