====================================================== WARNING: possible circular locking dependency detected 5.15.167-syzkaller #0 Not tainted ------------------------------------------------------ syz.2.73/4324 is trying to acquire lock: ffff0000c8460c98 (&mm->mmap_lock){++++}-{3:3}, at: get_current arch/arm64/include/asm/current.h:19 [inline] ffff0000c8460c98 (&mm->mmap_lock){++++}-{3:3}, at: internal_get_user_pages_fast+0x198/0x2210 mm/gup.c:2895 but task is already holding lock: ffff0000de9a1260 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: inode_trylock include/linux/fs.h:809 [inline] ffff0000de9a1260 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: ntfs_file_write_iter+0x194/0x49c fs/ntfs3/file.c:1122 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}: down_write+0xbc/0x12c kernel/locking/rwsem.c:1551 inode_lock include/linux/fs.h:789 [inline] ntfs_file_mmap+0x4b0/0x688 fs/ntfs3/file.c:401 call_mmap include/linux/fs.h:2177 [inline] mmap_region+0xcb4/0x12f0 mm/mmap.c:1791 do_mmap+0x6c0/0xcec mm/mmap.c:1575 vm_mmap_pgoff+0x1a4/0x2b4 mm/util.c:551 ksys_mmap_pgoff+0x458/0x668 mm/mmap.c:1624 __do_sys_mmap arch/arm64/kernel/sys.c:28 [inline] __se_sys_mmap arch/arm64/kernel/sys.c:21 [inline] __arm64_sys_mmap+0xf8/0x110 arch/arm64/kernel/sys.c:21 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #0 (&mm->mmap_lock){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x32d4/0x7638 kernel/locking/lockdep.c:5012 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5623 internal_get_user_pages_fast+0x1e4/0x2210 mm/gup.c:2895 get_user_pages_fast+0x60/0x94 mm/gup.c:3003 iov_iter_get_pages+0x204/0x4cc lib/iov_iter.c:1544 dio_refill_pages fs/direct-io.c:173 [inline] dio_get_page fs/direct-io.c:217 [inline] do_direct_IO fs/direct-io.c:938 [inline] do_blockdev_direct_IO fs/direct-io.c:1276 [inline] __blockdev_direct_IO+0xf10/0x3824 fs/direct-io.c:1368 blockdev_direct_IO include/linux/fs.h:3308 [inline] ntfs_direct_IO+0x174/0x304 fs/ntfs3/inode.c:798 generic_file_direct_write+0x234/0x538 mm/filemap.c:3687 __generic_file_write_iter+0x280/0x454 mm/filemap.c:3869 ntfs_file_write_iter+0x40c/0x49c fs/ntfs3/file.c:1143 call_write_iter include/linux/fs.h:2172 [inline] aio_write+0x604/0x8dc fs/aio.c:1594 io_submit_one+0x878/0x161c fs/aio.c:2013 __do_sys_io_submit fs/aio.c:2072 [inline] __se_sys_io_submit fs/aio.c:2042 [inline] __arm64_sys_io_submit+0x26c/0x3ec fs/aio.c:2042 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sb->s_type->i_mutex_key#21); lock(&mm->mmap_lock); lock(&sb->s_type->i_mutex_key#21); lock(&mm->mmap_lock); *** DEADLOCK *** 1 lock held by syz.2.73/4324: #0: ffff0000de9a1260 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: inode_trylock include/linux/fs.h:809 [inline] #0: ffff0000de9a1260 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: ntfs_file_write_iter+0x194/0x49c fs/ntfs3/file.c:1122 stack backtrace: CPU: 1 PID: 4324 Comm: syz.2.73 Not tainted 5.15.167-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 print_circular_bug+0x150/0x1b8 kernel/locking/lockdep.c:2011 check_noncircular+0x2cc/0x378 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 kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x32d4/0x7638 kernel/locking/lockdep.c:5012 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5623 internal_get_user_pages_fast+0x1e4/0x2210 mm/gup.c:2895 get_user_pages_fast+0x60/0x94 mm/gup.c:3003 iov_iter_get_pages+0x204/0x4cc lib/iov_iter.c:1544 dio_refill_pages fs/direct-io.c:173 [inline] dio_get_page fs/direct-io.c:217 [inline] do_direct_IO fs/direct-io.c:938 [inline] do_blockdev_direct_IO fs/direct-io.c:1276 [inline] __blockdev_direct_IO+0xf10/0x3824 fs/direct-io.c:1368 blockdev_direct_IO include/linux/fs.h:3308 [inline] ntfs_direct_IO+0x174/0x304 fs/ntfs3/inode.c:798 generic_file_direct_write+0x234/0x538 mm/filemap.c:3687 __generic_file_write_iter+0x280/0x454 mm/filemap.c:3869 ntfs_file_write_iter+0x40c/0x49c fs/ntfs3/file.c:1143 call_write_iter include/linux/fs.h:2172 [inline] aio_write+0x604/0x8dc fs/aio.c:1594 io_submit_one+0x878/0x161c fs/aio.c:2013 __do_sys_io_submit fs/aio.c:2072 [inline] __se_sys_io_submit fs/aio.c:2042 [inline] __arm64_sys_io_submit+0x26c/0x3ec fs/aio.c:2042 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584