ntfs: (device loop9): 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. ====================================================== WARNING: possible circular locking dependency detected 5.15.179-syzkaller #0 Not tainted ------------------------------------------------------ syz.9.152/5401 is trying to acquire lock: ffff888075215410 (&ni->mrec_lock){+.+.}-{3:3}, at: map_mft_record+0x4a/0x850 fs/ntfs/mft.c:154 but task is already holding lock: ffff888075215380 (&rl->lock){++++}-{3:3}, at: ntfs_prepare_pages_for_non_resident_write fs/ntfs/file.c:-1 [inline] ffff888075215380 (&rl->lock){++++}-{3:3}, at: ntfs_perform_write+0x2721/0x8280 fs/ntfs/file.c:1848 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&rl->lock){++++}-{3:3}: lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 down_read+0x45/0x2e0 kernel/locking/rwsem.c:1498 ntfs_read_block fs/ntfs/aops.c:248 [inline] ntfs_readpage+0x123e/0x2210 fs/ntfs/aops.c:435 do_read_cache_page+0x752/0x1040 mm/filemap.c:-1 read_mapping_page include/linux/pagemap.h:515 [inline] ntfs_map_page+0x25/0x390 fs/ntfs/aops.h:75 ntfs_sync_mft_mirror+0x253/0x19e0 fs/ntfs/mft.c:480 write_mft_record_nolock+0x140c/0x16c0 fs/ntfs/mft.c:805 write_mft_record fs/ntfs/mft.h:95 [inline] __ntfs_write_inode+0x7b4/0xdd0 fs/ntfs/inode.c:3050 ntfs_commit_inode fs/ntfs/inode.h:300 [inline] ntfs_put_super+0x676/0xf80 fs/ntfs/super.c:2307 generic_shutdown_super+0x130/0x310 fs/super.c:475 kill_block_super+0x7a/0xe0 fs/super.c:1427 deactivate_locked_super+0xa0/0x110 fs/super.c:335 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143 task_work_run+0x129/0x1a0 kernel/task_work.c:188 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0x6a3/0x2480 kernel/exit.c:874 do_group_exit+0x144/0x310 kernel/exit.c:996 get_signal+0xc66/0x14e0 kernel/signal.c:2900 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867 handle_signal_work kernel/entry/common.c:154 [inline] exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #0 (&ni->mrec_lock){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788 __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __mutex_lock_common+0x1da/0x25a0 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 map_mft_record+0x4a/0x850 fs/ntfs/mft.c:154 ntfs_map_runlist_nolock+0x44b/0x1770 fs/ntfs/attrib.c:91 ntfs_prepare_pages_for_non_resident_write fs/ntfs/file.c:886 [inline] ntfs_perform_write+0x2506/0x8280 fs/ntfs/file.c:1848 ntfs_file_write_iter+0x15a6/0x1fa0 fs/ntfs/file.c:1921 do_iter_readv_writev+0x594/0x7a0 fs/read_write.c:-1 do_iter_write+0x1e6/0x760 fs/read_write.c:855 vfs_writev fs/read_write.c:928 [inline] do_pwritev+0x219/0x360 fs/read_write.c:1025 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 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.9.152/5401: #0: ffff888023cae460 (sb_writers#18){.+.+}-{0:0}, at: vfs_writev fs/read_write.c:927 [inline] #0: ffff888023cae460 (sb_writers#18){.+.+}-{0:0}, at: do_pwritev+0x1fd/0x360 fs/read_write.c:1025 #1: ffff8880752156f0 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #1: ffff8880752156f0 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: ntfs_file_write_iter+0x8c/0x1fa0 fs/ntfs/file.c:1916 #2: ffff888075215380 (&rl->lock){++++}-{3:3}, at: ntfs_prepare_pages_for_non_resident_write fs/ntfs/file.c:-1 [inline] #2: ffff888075215380 (&rl->lock){++++}-{3:3}, at: ntfs_perform_write+0x2721/0x8280 fs/ntfs/file.c:1848 stack backtrace: CPU: 0 PID: 5401 Comm: syz.9.152 Not tainted 5.15.179-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 check_noncircular+0x2f8/0x3b0 kernel/locking/lockdep.c:2133 check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788 __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __mutex_lock_common+0x1da/0x25a0 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 map_mft_record+0x4a/0x850 fs/ntfs/mft.c:154 ntfs_map_runlist_nolock+0x44b/0x1770 fs/ntfs/attrib.c:91 ntfs_prepare_pages_for_non_resident_write fs/ntfs/file.c:886 [inline] ntfs_perform_write+0x2506/0x8280 fs/ntfs/file.c:1848 ntfs_file_write_iter+0x15a6/0x1fa0 fs/ntfs/file.c:1921 do_iter_readv_writev+0x594/0x7a0 fs/read_write.c:-1 do_iter_write+0x1e6/0x760 fs/read_write.c:855 vfs_writev fs/read_write.c:928 [inline] do_pwritev+0x219/0x360 fs/read_write.c:1025 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fe3e17fe169 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe3df667038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 00007fe3e1a16fa0 RCX: 00007fe3e17fe169 RDX: 0000000000000001 RSI: 0000200000000080 RDI: 0000000000000007 RBP: 00007fe3e187f2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000002328 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fe3e1a16fa0 R15: 00007ffd676fa268