====================================================== WARNING: possible circular locking dependency detected 6.1.115-syzkaller #0 Not tainted ------------------------------------------------------ syz.0.1181/8153 is trying to acquire lock: ffff0000df3d0100 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1101 [inline] ffff0000df3d0100 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_fallocate+0x604/0xd88 fs/ntfs3/file.c:647 but task is already holding lock: ffff0000df3d0540 (mapping.invalidate_lock#9){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:803 [inline] ffff0000df3d0540 (mapping.invalidate_lock#9){++++}-{3:3}, at: ntfs_fallocate+0x2fc/0xd88 fs/ntfs3/file.c:580 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (mapping.invalidate_lock#9){++++}-{3:3}: down_read+0x64/0x308 kernel/locking/rwsem.c:1520 filemap_invalidate_lock_shared include/linux/fs.h:813 [inline] filemap_fault+0x58c/0xf7c mm/filemap.c:3219 __do_fault+0x11c/0x3d8 mm/memory.c:4278 do_read_fault mm/memory.c:4629 [inline] do_fault mm/memory.c:4758 [inline] handle_pte_fault mm/memory.c:5029 [inline] __handle_mm_fault mm/memory.c:5171 [inline] handle_mm_fault+0x1ee8/0x3d38 mm/memory.c:5292 faultin_page mm/gup.c:1009 [inline] __get_user_pages+0x3b0/0x968 mm/gup.c:1233 populate_vma_page_range+0x1fc/0x2a0 mm/gup.c:1590 __mm_populate+0x240/0x3d8 mm/gup.c:1704 mm_populate include/linux/mm.h:2801 [inline] vm_mmap_pgoff+0x1fc/0x2b4 mm/util.c:525 ksys_mmap_pgoff+0x3c8/0x5b0 mm/mmap.c:1471 __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+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #1 (&mm->mmap_lock){++++}-{3:3}: __might_fault+0xc4/0x124 mm/memory.c:5851 _copy_to_user include/linux/uaccess.h:143 [inline] copy_to_user include/linux/uaccess.h:169 [inline] ni_fiemap+0x1134/0x1444 fs/ntfs3/frecord.c:2138 ntfs_fiemap+0x110/0x168 fs/ntfs3/file.c:1246 ioctl_fiemap fs/ioctl.c:219 [inline] do_vfs_ioctl+0x194c/0x26f8 fs/ioctl.c:810 __do_sys_ioctl fs/ioctl.c:868 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #0 (&ni->ni_lock/4){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x3338/0x7680 kernel/locking/lockdep.c:5049 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 ni_lock fs/ntfs3/ntfs_fs.h:1101 [inline] ntfs_fallocate+0x604/0xd88 fs/ntfs3/file.c:647 vfs_fallocate+0x478/0x5b4 fs/open.c:323 ksys_fallocate fs/open.c:346 [inline] __do_sys_fallocate fs/open.c:354 [inline] __se_sys_fallocate fs/open.c:352 [inline] __arm64_sys_fallocate+0xc0/0x110 fs/open.c:352 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 other info that might help us debug this: Chain exists of: &ni->ni_lock/4 --> &mm->mmap_lock --> mapping.invalidate_lock#9 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(mapping.invalidate_lock#9); lock(&mm->mmap_lock); lock(mapping.invalidate_lock#9); lock(&ni->ni_lock/4); *** DEADLOCK *** 3 locks held by syz.0.1181/8153: #0: ffff0000d3fa0460 (sb_writers#12){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3015 [inline] #0: ffff0000d3fa0460 (sb_writers#12){.+.+}-{0:0}, at: vfs_fallocate+0x404/0x5b4 fs/open.c:322 #1: ffff0000df3d03a0 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #1: ffff0000df3d03a0 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: ntfs_fallocate+0x25c/0xd88 fs/ntfs3/file.c:566 #2: ffff0000df3d0540 (mapping.invalidate_lock#9){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:803 [inline] #2: ffff0000df3d0540 (mapping.invalidate_lock#9){++++}-{3:3}, at: ntfs_fallocate+0x2fc/0xd88 fs/ntfs3/file.c:580 stack backtrace: CPU: 0 PID: 8153 Comm: syz.0.1181 Not tainted 6.1.115-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __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:2048 check_noncircular+0x2cc/0x378 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x3338/0x7680 kernel/locking/lockdep.c:5049 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 ni_lock fs/ntfs3/ntfs_fs.h:1101 [inline] ntfs_fallocate+0x604/0xd88 fs/ntfs3/file.c:647 vfs_fallocate+0x478/0x5b4 fs/open.c:323 ksys_fallocate fs/open.c:346 [inline] __do_sys_fallocate fs/open.c:354 [inline] __se_sys_fallocate fs/open.c:352 [inline] __arm64_sys_fallocate+0xc0/0x110 fs/open.c:352 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585