ntfs: volume version 3.1. ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ kworker/u4:2/76 is trying to acquire lock: 000000006064827c (&rl->lock){++++}, at: ntfs_read_block fs/ntfs/aops.c:265 [inline] 000000006064827c (&rl->lock){++++}, at: ntfs_readpage+0x1909/0x21b0 fs/ntfs/aops.c:452 ntfs: volume version 3.1. but task is already holding lock: 00000000612d5ed4 (&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 syz-executor.0 (28105): drop_caches: 1 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/u4:2/76: #0: 000000009fa6a3c7 ((wq_completion)"writeback"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000774254b3 ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000612d5ed4 (&ni->mrec_lock){+.+.}, at: map_mft_record+0x3c/0xc70 fs/ntfs/mft.c:168 syz-executor.0 (28130): drop_caches: 2 stack backtrace: CPU: 0 PID: 76 Comm: kworker/u4:2 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-7:3) 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 syz-executor.0 (28130): drop_caches: 1 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 ntfs: volume version 3.1. syz-executor.4 (28126): drop_caches: 1 ntfs: (device loop2): ntfs_cluster_alloc(): Failed to allocate clusters, aborting (error -28). ntfs: volume version 3.1. ntfs: (device loop2): ntfs_attr_extend_allocation(): Cannot extend allocation of inode 0x43, attribute type 0x80, because the allocation of clusters failed with error code -28. ntfs: (device loop1): ntfs_cluster_alloc(): Failed to allocate clusters, aborting (error -28). ntfs: volume version 3.1. ntfs: (device loop1): ntfs_attr_extend_allocation(): Cannot extend allocation of inode 0x43, attribute type 0x80, because the allocation of clusters failed with error code -28. syz-executor.4 (28126): drop_caches: 1 syz-executor.5 (28139): drop_caches: 2 syz-executor.0 (28187): drop_caches: 2 syz-executor.0 (28187): drop_caches: 2 syz-executor.5 (28139): drop_caches: 2 syz-executor.0 (28173): drop_caches: 1 ntfs: volume version 3.1. ntfs: volume version 3.1. ntfs: volume version 3.1. syz-executor.4 (28180): drop_caches: 1 syz-executor.5 (28191): drop_caches: 1 syz-executor.5 (28191): drop_caches: 1 syz-executor.4 (28180): drop_caches: 1 ntfs: volume version 3.1. ntfs: volume version 3.1. ntfs: volume version 3.1. syz-executor.4 (28227): drop_caches: 2 syz-executor.5 (28225): drop_caches: 2 syz-executor.5 (28225): drop_caches: 2 syz-executor.4 (28227): drop_caches: 2 syz-executor.0 (28173): drop_caches: 2 syz-executor.4 (28246): drop_caches: 2 syz-executor.4 (28246): drop_caches: 2 syz-executor.0 (28244): drop_caches: 2 syz-executor.0 (28244): drop_caches: 2 syz-executor.0 (28255): drop_caches: 2 syz-executor.5 (28247): drop_caches: 2 syz-executor.0 (28255): drop_caches: 2 syz-executor.5 (28247): drop_caches: 2 syz-executor.4 (28256): drop_caches: 2 ntfs: volume version 3.1. syz-executor.4 (28256): drop_caches: 2 syz-executor.4 (28277): drop_caches: 2 ntfs: volume version 3.1. syz-executor.4 (28277): drop_caches: 2 syz-executor.5 (28267): drop_caches: 2 ntfs: volume version 3.1. syz-executor.4 (28291): drop_caches: 2 syz-executor.5 (28267): drop_caches: 2 syz-executor.0 (28286): drop_caches: 2 syz-executor.0 (28294): drop_caches: 2 syz-executor.4 (28291): drop_caches: 2 syz-executor.0 (28294): drop_caches: 2 syz-executor.0 (28286): drop_caches: 2 ntfs: volume version 3.1. ntfs: volume version 3.1. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. syz-executor.0 (28321): drop_caches: 2 syz-executor.0 (28329): drop_caches: 2 syz-executor.0 (28321): drop_caches: 2 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. syz-executor.0 (28329): drop_caches: 2 syz-executor.5 (28315): drop_caches: 2 ntfs: volume version 3.1. syz-executor.4 (28333): drop_caches: 2 syz-executor.5 (28315): drop_caches: 2 ntfs: volume version 3.1. syz-executor.4 (28333): drop_caches: 2 syz-executor.0 (28357): drop_caches: 2 syz-executor.0 (28341): drop_caches: 2 syz-executor.0 (28357): drop_caches: 2 syz-executor.0 (28341): drop_caches: 2 ntfs: volume version 3.1. ntfs: volume version 3.1. ntfs: volume version 3.1. syz-executor.0 (28392): drop_caches: 2 syz-executor.0 (28392): drop_caches: 2 ntfs: volume version 3.1. ntfs: volume version 3.1. syz-executor.0 (28381): drop_caches: 2 syz-executor.0 (28381): drop_caches: 2 syz-executor.5 (28441): drop_caches: 2 ntfs: volume version 3.1. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. syz-executor.4 (28451): drop_caches: 2 syz-executor.5 (28441): drop_caches: 2 syz-executor.4 (28451): drop_caches: 2 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. syz-executor.0 (28449): drop_caches: 2 syz-executor.0 (28459): drop_caches: 2 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. syz-executor.0 (28459): drop_caches: 2 syz-executor.0 (28449): drop_caches: 2 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. ntfs: volume version 3.1. syz-executor.5 (28467): drop_caches: 2 syz-executor.5 (28467): drop_caches: 2 ntfs: (device loop1): parse_options(): Unrecognized mount option  . ntfs: volume version 3.1. syz-executor.5 (28510): drop_caches: 2 ntfs: (device loop1): parse_options(): Unrecognized mount option  . ntfs: volume version 3.1. syz-executor.5 (28510): drop_caches: 2 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. syz-executor.5 (28534): drop_caches: 2 syz-executor.5 (28534): drop_caches: 2 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. ntfs: volume version 3.1. ntfs: (device loop1): parse_options(): Unrecognized mount option  . syz-executor.4 (28551): drop_caches: 2 syz-executor.4 (28551): drop_caches: 2 ntfs: volume version 3.1. syz-executor.5 (28567): drop_caches: 2 syz-executor.5 (28567): drop_caches: 2 syz-executor.0 (28584): drop_caches: 2 syz-executor.0 (28568): drop_caches: 2 syz-executor.0 (28584): drop_caches: 2 syz-executor.0 (28568): drop_caches: 2 syz-executor.5 (28583): drop_caches: 2 syz-executor.4 (28592): drop_caches: 2 syz-executor.5 (28583): drop_caches: 2 syz-executor.4 (28592): drop_caches: 2 ntfs: volume version 3.1. syz-executor.5 (28608): drop_caches: 2 syz-executor.5 (28608): drop_caches: 2 syz-executor.4 (28612): drop_caches: 2 syz-executor.4 (28612): drop_caches: 2 ntfs: volume version 3.1. syz-executor.4 (28621): drop_caches: 2 syz-executor.5 (28620): drop_caches: 2 syz-executor.4 (28621): drop_caches: 2 syz-executor.5 (28620): drop_caches: 2 ntfs: volume version 3.1. syz-executor.4 (28664): drop_caches: 2 syz-executor.4 (28664): drop_caches: 2 syz-executor.5 (28653): drop_caches: 2 syz-executor.0 (28659): drop_caches: 2 syz-executor.0 (28671): drop_caches: 2 syz-executor.5 (28653): drop_caches: 2 syz-executor.0 (28671): drop_caches: 2 syz-executor.0 (28659): drop_caches: 2 ntfs: volume version 3.1. ntfs: volume version 3.1. syz-executor.5 (28692): drop_caches: 2 syz-executor.5 (28692): drop_caches: 2 syz-executor.4 (28709): drop_caches: 2 syz-executor.4 (28709): drop_caches: 2 ntfs: volume version 3.1. ntfs: volume version 3.1. syz-executor.4 (28737): drop_caches: 2 syz-executor.4 (28737): drop_caches: 2 ntfs: volume version 3.1. syz-executor.0 (28757): drop_caches: 2 syz-executor.0 (28747): drop_caches: 2 syz-executor.4 (28759): drop_caches: 2 syz-executor.0 (28757): drop_caches: 2 syz-executor.4 (28759): drop_caches: 2 syz-executor.0 (28747): drop_caches: 2 ntfs: volume version 3.1. ntfs: volume version 3.1. ntfs: volume version 3.1. syz-executor.0 (28837): drop_caches: 2 syz-executor.0 (28837): drop_caches: 2 syz-executor.0 (28820): drop_caches: 2 syz-executor.0 (28820): drop_caches: 2 syz-executor.5 (28832): drop_caches: 2 syz-executor.5 (28832): drop_caches: 2 syz-executor.4 (28854): drop_caches: 2 ntfs: volume version 3.1. syz-executor.4 (28854): drop_caches: 2 ntfs: volume version 3.1. ntfs: volume version 3.1. syz-executor.4 (28870): drop_caches: 2 syz-executor.0 (28874): drop_caches: 2 syz-executor.5 (28865): drop_caches: 2 syz-executor.0 (28860): drop_caches: 2 syz-executor.5 (28865): drop_caches: 2 syz-executor.4 (28870): drop_caches: 2 syz-executor.0 (28874): drop_caches: 2 syz-executor.0 (28860): drop_caches: 2 ntfs: volume version 3.1. syz-executor.4 (28907): drop_caches: 2 syz-executor.4 (28907): drop_caches: 2 ntfs: volume version 3.1. syz-executor.4 (28937): drop_caches: 2 syz-executor.0 (28924): drop_caches: 2 syz-executor.5 (28911): drop_caches: 2 syz-executor.0 (28940): drop_caches: 2 syz-executor.0 (28940): drop_caches: 2 syz-executor.4 (28937): drop_caches: 2 syz-executor.5 (28911): drop_caches: 2 syz-executor.0 (28924): drop_caches: 2 ntfs: (device loop2): parse_options(): Unrecognized mount option ./bus. syz-executor.4 (28970): drop_caches: 2 syz-executor.4 (28970): drop_caches: 2 syz-executor.0 (28988): drop_caches: 2 ntfs: volume version 3.1. syz-executor.0 (28988): drop_caches: 2 syz-executor.0 (28972): drop_caches: 2 ntfs: volume version 3.1. syz-executor.4 (28991): drop_caches: 2 syz-executor.4 (28991): drop_caches: 2 ntfs: volume version 3.1. syz-executor.0 (28972): drop_caches: 2 syz-executor.4 (29010): drop_caches: 2 syz-executor.4 (29010): drop_caches: 2 ntfs: volume version 3.1. syz-executor.0 (29044): drop_caches: 2 syz-executor.0 (29040): drop_caches: 2 syz-executor.4 (29048): drop_caches: 2 syz-executor.0 (29044): drop_caches: 2 syz-executor.0 (29040): drop_caches: 2 syz-executor.4 (29048): drop_caches: 2 syz-executor.4 (29060): drop_caches: 2 ntfs: volume version 3.1. syz-executor.4 (29060): drop_caches: 2 ntfs: volume version 3.1. syz-executor.4 (29080): drop_caches: 2 syz-executor.4 (29080): drop_caches: 2