====================================================== WARNING: possible circular locking dependency detected 5.15.172-syzkaller #0 Not tainted ------------------------------------------------------ syz.8.512/6497 is trying to acquire lock: ffff0000ddca0100 ( &ni->ni_lock/5 ){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1100 [inline] ){+.+.}-{3:3}, at: attr_data_get_block+0x35c/0x1c18 fs/ntfs3/attrib.c:849 but task is already holding lock: ffff0000ddca0540 (mapping.invalidate_lock#5){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:844 [inline] ffff0000ddca0540 (mapping.invalidate_lock#5){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x158/0x654 mm/readahead.c:195 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (mapping.invalidate_lock#5){.+.+}-{3:3}: down_read+0xc0/0x398 kernel/locking/rwsem.c:1498 filemap_invalidate_lock_shared include/linux/fs.h:844 [inline] filemap_fault+0x52c/0xf5c mm/filemap.c:3081 __do_fault+0x120/0x5d0 mm/memory.c:3915 do_read_fault mm/memory.c:4251 [inline] do_fault mm/memory.c:4379 [inline] handle_pte_fault mm/memory.c:4637 [inline] __handle_mm_fault mm/memory.c:4772 [inline] handle_mm_fault+0x21e8/0x33a8 mm/memory.c:4870 __do_page_fault arch/arm64/mm/fault.c:505 [inline] do_page_fault+0x700/0xb60 arch/arm64/mm/fault.c:605 do_translation_fault+0xe8/0x138 arch/arm64/mm/fault.c:686 do_mem_abort+0x70/0x1d8 arch/arm64/mm/fault.c:819 el1_abort+0x3c/0x5c arch/arm64/kernel/entry-common.c:358 el1h_64_sync_handler+0x60/0xac arch/arm64/kernel/entry-common.c:418 el1h_64_sync+0x78/0x7c arch/arm64/kernel/entry.S:522 __arch_copy_from_user+0x100/0x218 arch/arm64/lib/copy_template.S:130 __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 -> #2 (&mm->mmap_lock){++++}-{3:3}: __might_fault+0xc8/0x128 mm/memory.c:5344 _copy_to_user include/linux/uaccess.h:174 [inline] copy_to_user include/linux/uaccess.h:200 [inline] fiemap_fill_next_extent+0x1b4/0x44c fs/ioctl.c:144 ni_fiemap+0x744/0xe10 fs/ntfs3/frecord.c:1998 ntfs_fiemap+0x110/0x168 fs/ntfs3/file.c:1224 ioctl_fiemap fs/ioctl.c:219 [inline] do_vfs_ioctl+0x1bcc/0x2a38 fs/ioctl.c:814 __do_sys_ioctl fs/ioctl.c:872 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:860 __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 -> #1 (&ni->file.run_lock){.+.+}-{3:3}: down_read+0xc0/0x398 kernel/locking/rwsem.c:1498 ni_fiemap+0x2c4/0xe10 fs/ntfs3/frecord.c:1915 ntfs_fiemap+0x110/0x168 fs/ntfs3/file.c:1224 ioctl_fiemap fs/ioctl.c:219 [inline] do_vfs_ioctl+0x1bcc/0x2a38 fs/ioctl.c:814 __do_sys_ioctl fs/ioctl.c:872 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:860 __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 (&ni->ni_lock/5){+.+.}-{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 __mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 ni_lock fs/ntfs3/ntfs_fs.h:1100 [inline] attr_data_get_block+0x35c/0x1c18 fs/ntfs3/attrib.c:849 ntfs_get_block_vbo+0x324/0xed0 fs/ntfs3/inode.c:591 ntfs_get_block+0x84/0xc4 fs/ntfs3/inode.c:690 do_mpage_readpage+0x6f8/0x1c68 fs/mpage.c:231 mpage_readahead+0x35c/0x844 fs/mpage.c:389 ntfs_readahead+0x1a4/0x1f4 fs/ntfs3/inode.c:762 read_pages+0x13c/0x420 mm/readahead.c:130 page_cache_ra_unbounded+0x200/0x654 mm/readahead.c:211 do_page_cache_ra mm/readahead.c:269 [inline] ondemand_readahead+0x62c/0xd0c mm/readahead.c:552 page_cache_sync_ra+0x130/0x180 mm/readahead.c:580 page_cache_sync_readahead include/linux/pagemap.h:833 [inline] filemap_get_pages mm/filemap.c:2551 [inline] filemap_read+0x52c/0x1bd8 mm/filemap.c:2634 generic_file_read_iter+0xa0/0x3c4 mm/filemap.c:2794 ntfs_file_read_iter+0x184/0x1e0 fs/ntfs3/file.c:829 call_read_iter include/linux/fs.h:2168 [inline] generic_file_splice_read+0x3a0/0x60c fs/splice.c:311 do_splice_to fs/splice.c:796 [inline] splice_direct_to_actor+0x354/0x9a0 fs/splice.c:870 do_splice_direct+0x1f4/0x334 fs/splice.c:979 do_sendfile+0x4c0/0xcb0 fs/read_write.c:1249 __do_sys_sendfile64 fs/read_write.c:1317 [inline] __se_sys_sendfile64 fs/read_write.c:1303 [inline] __arm64_sys_sendfile64+0x160/0x408 fs/read_write.c:1303 __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: Chain exists of: &ni->ni_lock/5 --> &mm->mmap_lock --> mapping.invalidate_lock#5 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(mapping.invalidate_lock#5); lock(&mm->mmap_lock); lock(mapping.invalidate_lock#5); lock(&ni->ni_lock/5); *** DEADLOCK *** 2 locks held by syz.8.512/6497: #0: ffff0000cb90c460 (sb_writers#19){.+.+}-{0:0}, at: do_sendfile+0x4a4/0xcb0 fs/read_write.c:1248 #1: ffff0000ddca0540 (mapping.invalidate_lock#5){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:844 [inline] #1: ffff0000ddca0540 (mapping.invalidate_lock#5){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x158/0x654 mm/readahead.c:195 stack backtrace: CPU: 1 PID: 6497 Comm: syz.8.512 Not tainted 5.15.172-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 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 __mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 ni_lock fs/ntfs3/ntfs_fs.h:1100 [inline] attr_data_get_block+0x35c/0x1c18 fs/ntfs3/attrib.c:849 ntfs_get_block_vbo+0x324/0xed0 fs/ntfs3/inode.c:591 ntfs_get_block+0x84/0xc4 fs/ntfs3/inode.c:690 do_mpage_readpage+0x6f8/0x1c68 fs/mpage.c:231 mpage_readahead+0x35c/0x844 fs/mpage.c:389 ntfs_readahead+0x1a4/0x1f4 fs/ntfs3/inode.c:762 read_pages+0x13c/0x420 mm/readahead.c:130 page_cache_ra_unbounded+0x200/0x654 mm/readahead.c:211 do_page_cache_ra mm/readahead.c:269 [inline] ondemand_readahead+0x62c/0xd0c mm/readahead.c:552 page_cache_sync_ra+0x130/0x180 mm/readahead.c:580 page_cache_sync_readahead include/linux/pagemap.h:833 [inline] filemap_get_pages mm/filemap.c:2551 [inline] filemap_read+0x52c/0x1bd8 mm/filemap.c:2634 generic_file_read_iter+0xa0/0x3c4 mm/filemap.c:2794 ntfs_file_read_iter+0x184/0x1e0 fs/ntfs3/file.c:829 call_read_iter include/linux/fs.h:2168 [inline] generic_file_splice_read+0x3a0/0x60c fs/splice.c:311 do_splice_to fs/splice.c:796 [inline] splice_direct_to_actor+0x354/0x9a0 fs/splice.c:870 do_splice_direct+0x1f4/0x334 fs/splice.c:979 do_sendfile+0x4c0/0xcb0 fs/read_write.c:1249 __do_sys_sendfile64 fs/read_write.c:1317 [inline] __se_sys_sendfile64 fs/read_write.c:1303 [inline] __arm64_sys_sendfile64+0x160/0x408 fs/read_write.c:1303 __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