====================================================== WARNING: possible circular locking dependency detected 6.1.145-syzkaller #0 Not tainted ------------------------------------------------------ syz.1.1362/9885 is trying to acquire lock: ffff8880744f9400 (mapping.invalidate_lock#8){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:813 [inline] ffff8880744f9400 (mapping.invalidate_lock#8){++++}-{3:3}, at: filemap_fault+0x53c/0x1670 mm/filemap.c:3220 but task is already holding lock: ffff88802d964c58 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable include/linux/mmap_lock.h:126 [inline] ffff88802d964c58 (&mm->mmap_lock){++++}-{3:3}, at: __get_user_pages_locked mm/gup.c:1505 [inline] ffff88802d964c58 (&mm->mmap_lock){++++}-{3:3}, at: get_user_pages_unlocked+0x3b1/0x6f0 mm/gup.c:2357 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&mm->mmap_lock){++++}-{3:3}: __might_fault+0xc2/0x120 mm/memory.c:5852 _copy_to_user+0x27/0x130 lib/usercopy.c:36 copy_to_user include/linux/uaccess.h:169 [inline] ni_fiemap+0x4ec/0x1300 fs/ntfs3/frecord.c:2140 ntfs_fiemap+0xd7/0x130 fs/ntfs3/file.c:1170 ioctl_fiemap fs/ioctl.c:219 [inline] do_vfs_ioctl+0x1425/0x1d10 fs/ioctl.c:810 __do_sys_ioctl fs/ioctl.c:868 [inline] __se_sys_ioctl+0x83/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (&ni->ni_lock/5){+.+.}-{3:3}: __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x120/0xaf0 kernel/locking/mutex.c:747 ni_lock fs/ntfs3/ntfs_fs.h:1102 [inline] ntfs_fallocate+0x4c7/0xf20 fs/ntfs3/file.c:518 vfs_fallocate+0x584/0x6f0 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] __x64_sys_fallocate+0xbd/0x100 fs/open.c:352 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (mapping.invalidate_lock#8){++++}-{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+0x2cf8/0x7c50 kernel/locking/lockdep.c:5049 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662 down_read+0x42/0x2d0 kernel/locking/rwsem.c:1520 filemap_invalidate_lock_shared include/linux/fs.h:813 [inline] filemap_fault+0x53c/0x1670 mm/filemap.c:3220 __do_fault+0x13b/0x4e0 mm/memory.c:4280 do_read_fault mm/memory.c:4631 [inline] do_fault mm/memory.c:4760 [inline] handle_pte_fault mm/memory.c:5031 [inline] __handle_mm_fault mm/memory.c:5173 [inline] handle_mm_fault+0x28ca/0x3e70 mm/memory.c:5294 faultin_page mm/gup.c:1026 [inline] __get_user_pages+0x3ff/0xeb0 mm/gup.c:1250 __get_user_pages_locked mm/gup.c:1454 [inline] get_user_pages_unlocked+0x248/0x6f0 mm/gup.c:2357 __gup_longterm_unlocked mm/gup.c:2968 [inline] internal_get_user_pages_fast+0x1f00/0x2620 mm/gup.c:3058 __iov_iter_get_pages_alloc+0x3b7/0xb40 lib/iov_iter.c:1460 iov_iter_get_pages2+0x5b/0x90 lib/iov_iter.c:1503 dio_refill_pages fs/direct-io.c:172 [inline] dio_get_page fs/direct-io.c:215 [inline] do_direct_IO fs/direct-io.c:932 [inline] __blockdev_direct_IO+0x1097/0x3450 fs/direct-io.c:1266 blockdev_direct_IO include/linux/fs.h:3342 [inline] ntfs_direct_IO+0x194/0x390 fs/ntfs3/inode.c:798 generic_file_direct_write+0x3be/0x660 mm/filemap.c:3770 __generic_file_write_iter+0x1db/0x430 mm/filemap.c:3930 ntfs_file_write_iter+0x618/0x6f0 fs/ntfs3/file.c:1081 do_iter_readv_writev fs/read_write.c:-1 [inline] do_iter_write+0x62d/0xaf0 fs/read_write.c:861 vfs_writev fs/read_write.c:934 [inline] do_writev+0x24e/0x410 fs/read_write.c:977 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Chain exists of: mapping.invalidate_lock#8 --> &ni->ni_lock/5 --> &mm->mmap_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&mm->mmap_lock); lock(&ni->ni_lock/5); lock(&mm->mmap_lock); lock(mapping.invalidate_lock#8); *** DEADLOCK *** 4 locks held by syz.1.1362/9885: #0: ffff888026d725e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040 #1: ffff8880759d8460 (sb_writers#34){.+.+}-{0:0}, at: vfs_writev fs/read_write.c:933 [inline] #1: ffff8880759d8460 (sb_writers#34){.+.+}-{0:0}, at: do_writev+0x232/0x410 fs/read_write.c:977 #2: ffff8880744f9260 (&sb->s_type->i_mutex_key#43){+.+.}-{3:3}, at: inode_trylock include/linux/fs.h:778 [inline] #2: ffff8880744f9260 (&sb->s_type->i_mutex_key#43){+.+.}-{3:3}, at: ntfs_file_write_iter+0x1f6/0x6f0 fs/ntfs3/file.c:1060 #3: ffff88802d964c58 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable include/linux/mmap_lock.h:126 [inline] #3: ffff88802d964c58 (&mm->mmap_lock){++++}-{3:3}, at: __get_user_pages_locked mm/gup.c:1505 [inline] #3: ffff88802d964c58 (&mm->mmap_lock){++++}-{3:3}, at: get_user_pages_unlocked+0x3b1/0x6f0 mm/gup.c:2357 stack backtrace: CPU: 0 PID: 9885 Comm: syz.1.1362 Not tainted 6.1.145-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106 check_noncircular+0x274/0x310 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+0x2cf8/0x7c50 kernel/locking/lockdep.c:5049 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662 down_read+0x42/0x2d0 kernel/locking/rwsem.c:1520 filemap_invalidate_lock_shared include/linux/fs.h:813 [inline] filemap_fault+0x53c/0x1670 mm/filemap.c:3220 __do_fault+0x13b/0x4e0 mm/memory.c:4280 do_read_fault mm/memory.c:4631 [inline] do_fault mm/memory.c:4760 [inline] handle_pte_fault mm/memory.c:5031 [inline] __handle_mm_fault mm/memory.c:5173 [inline] handle_mm_fault+0x28ca/0x3e70 mm/memory.c:5294 faultin_page mm/gup.c:1026 [inline] __get_user_pages+0x3ff/0xeb0 mm/gup.c:1250 __get_user_pages_locked mm/gup.c:1454 [inline] get_user_pages_unlocked+0x248/0x6f0 mm/gup.c:2357 __gup_longterm_unlocked mm/gup.c:2968 [inline] internal_get_user_pages_fast+0x1f00/0x2620 mm/gup.c:3058 __iov_iter_get_pages_alloc+0x3b7/0xb40 lib/iov_iter.c:1460 iov_iter_get_pages2+0x5b/0x90 lib/iov_iter.c:1503 dio_refill_pages fs/direct-io.c:172 [inline] dio_get_page fs/direct-io.c:215 [inline] do_direct_IO fs/direct-io.c:932 [inline] __blockdev_direct_IO+0x1097/0x3450 fs/direct-io.c:1266 blockdev_direct_IO include/linux/fs.h:3342 [inline] ntfs_direct_IO+0x194/0x390 fs/ntfs3/inode.c:798 generic_file_direct_write+0x3be/0x660 mm/filemap.c:3770 __generic_file_write_iter+0x1db/0x430 mm/filemap.c:3930 ntfs_file_write_iter+0x618/0x6f0 fs/ntfs3/file.c:1081 do_iter_readv_writev fs/read_write.c:-1 [inline] do_iter_write+0x62d/0xaf0 fs/read_write.c:861 vfs_writev fs/read_write.c:934 [inline] do_writev+0x24e/0x410 fs/read_write.c:977 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fb333b8e929 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:00007fb3339ff038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007fb333db5fa0 RCX: 00007fb333b8e929 RDX: 0000000000000001 RSI: 0000200000000140 RDI: 0000000000000005 RBP: 00007fb333c10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb333db5fa0 R15: 00007fffd4b71e48