====================================================== WARNING: possible circular locking dependency detected 6.1.84-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.1/8331 is trying to acquire lock: ffff0000c4360748 (&mm->mmap_lock){++++}-{3:3}, at: __might_fault+0x9c/0x124 mm/memory.c:5830 but task is already holding lock: ffff0000f70c0910 (&ni->file.run_lock){.+.+}-{3:3}, at: ni_fiemap+0x2c4/0xe10 fs/ntfs3/frecord.c:1962 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&ni->file.run_lock){.+.+}-{3:3}: down_read+0x64/0x308 kernel/locking/rwsem.c:1520 attr_data_get_block+0x220/0x1bdc fs/ntfs3/attrib.c:903 ntfs_get_block_vbo+0x2f4/0xd14 fs/ntfs3/inode.c:590 ntfs_get_block+0x84/0xc4 fs/ntfs3/inode.c:686 do_mpage_readpage+0x5d8/0x1748 fs/mpage.c:208 mpage_readahead+0x360/0x644 fs/mpage.c:361 ntfs_readahead+0x1a4/0x1f4 fs/ntfs3/inode.c:759 read_pages+0x168/0x6a0 mm/readahead.c:161 page_cache_ra_unbounded+0x46c/0x58c mm/readahead.c:270 do_page_cache_ra mm/readahead.c:300 [inline] page_cache_ra_order+0x7f4/0x98c mm/readahead.c:560 ondemand_readahead+0x5f0/0xafc mm/readahead.c:682 page_cache_sync_ra+0x350/0x3d0 mm/readahead.c:709 page_cache_sync_readahead include/linux/pagemap.h:1248 [inline] filemap_get_pages mm/filemap.c:2636 [inline] filemap_read+0x598/0x2264 mm/filemap.c:2730 generic_file_read_iter+0xa0/0x450 mm/filemap.c:2885 ntfs_file_read_iter+0x184/0x1e0 fs/ntfs3/file.c:853 __kernel_read+0x30c/0x6b4 fs/read_write.c:428 kernel_read+0xd8/0x1d4 fs/read_write.c:446 prepare_binprm fs/exec.c:1667 [inline] search_binary_handler fs/exec.c:1721 [inline] exec_binprm fs/exec.c:1778 [inline] bprm_execve+0x764/0x162c fs/exec.c:1847 do_execveat_common+0x668/0x814 fs/exec.c:1952 do_execve fs/exec.c:2026 [inline] __do_sys_execve fs/exec.c:2102 [inline] __se_sys_execve fs/exec.c:2097 [inline] __arm64_sys_execve+0x98/0xb0 fs/exec.c:2097 __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:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 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 (mapping.invalidate_lock#6){.+.+}-{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:3191 __do_fault+0x11c/0x3d8 mm/memory.c:4261 do_read_fault mm/memory.c:4612 [inline] do_fault mm/memory.c:4741 [inline] handle_pte_fault mm/memory.c:5013 [inline] __handle_mm_fault mm/memory.c:5155 [inline] handle_mm_fault+0x1f90/0x3ef0 mm/memory.c:5276 __do_page_fault arch/arm64/mm/fault.c:499 [inline] do_page_fault+0x330/0x890 arch/arm64/mm/fault.c:583 do_translation_fault+0x94/0xc8 arch/arm64/mm/fault.c:667 do_mem_abort+0x74/0x200 arch/arm64/mm/fault.c:803 el1_abort+0x3c/0x5c arch/arm64/kernel/entry-common.c:367 el1h_64_sync_handler+0x60/0xac arch/arm64/kernel/entry-common.c:427 el1h_64_sync+0x64/0x68 arch/arm64/kernel/entry.S:580 do_strncpy_from_user lib/strncpy_from_user.c:41 [inline] strncpy_from_user+0x224/0x54c lib/strncpy_from_user.c:139 getname_flags+0x104/0x48c fs/namei.c:150 getname+0x28/0x38 fs/namei.c:218 do_sys_openat2+0xd4/0x3d8 fs/open.c:1312 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1345 __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:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 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 (&mm->mmap_lock){++++}-{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 __might_fault+0xc4/0x124 mm/memory.c:5831 _copy_to_user include/linux/uaccess.h:143 [inline] copy_to_user include/linux/uaccess.h:169 [inline] fiemap_fill_next_extent+0x1b4/0x424 fs/ioctl.c:144 ni_fiemap+0x744/0xe10 fs/ntfs3/frecord.c:2045 ntfs_fiemap+0x110/0x168 fs/ntfs3/file.c:1247 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:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 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: &mm->mmap_lock --> mapping.invalidate_lock#6 --> &ni->file.run_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ni->file.run_lock); lock(mapping.invalidate_lock#6); lock(&ni->file.run_lock); lock(&mm->mmap_lock); *** DEADLOCK *** 2 locks held by syz-executor.1/8331: #0: ffff0000f70c0860 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1099 [inline] #0: ffff0000f70c0860 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_fiemap+0xec/0x168 fs/ntfs3/file.c:1245 #1: ffff0000f70c0910 (&ni->file.run_lock){.+.+}-{3:3}, at: ni_fiemap+0x2c4/0xe10 fs/ntfs3/frecord.c:1962 stack backtrace: CPU: 1 PID: 8331 Comm: syz-executor.1 Not tainted 6.1.84-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 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/0x5c 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 __might_fault+0xc4/0x124 mm/memory.c:5831 _copy_to_user include/linux/uaccess.h:143 [inline] copy_to_user include/linux/uaccess.h:169 [inline] fiemap_fill_next_extent+0x1b4/0x424 fs/ioctl.c:144 ni_fiemap+0x744/0xe10 fs/ntfs3/frecord.c:2045 ntfs_fiemap+0x110/0x168 fs/ntfs3/file.c:1247 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:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 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 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. cgroup: Unknown subsys name 'nopr'