======================================================= ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.0.17/5076 is trying to acquire lock: ffff888061527b40 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:842 [inline] ffff888061527b40 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_fault+0x69f/0x13a0 mm/filemap.c:3081 but task is already holding lock: ffff88805e582428 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable include/linux/mmap_lock.h:126 [inline] ffff88805e582428 (&mm->mmap_lock){++++}-{3:3}, at: __get_user_pages_locked mm/gup.c:1433 [inline] ffff88805e582428 (&mm->mmap_lock){++++}-{3:3}, at: get_user_pages_unlocked+0x3cb/0x720 mm/gup.c:2222 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&mm->mmap_lock){++++}-{3:3}: __might_fault+0xb3/0x110 mm/memory.c:5357 _copy_to_user+0x29/0x130 lib/usercopy.c:35 copy_to_user include/linux/uaccess.h:200 [inline] fiemap_fill_next_extent+0x1ba/0x380 fs/ioctl.c:144 ni_fiemap+0x855/0xc50 fs/ntfs3/frecord.c:2023 ntfs_fiemap+0xd7/0x130 fs/ntfs3/file.c:1240 ioctl_fiemap fs/ioctl.c:219 [inline] do_vfs_ioctl+0x1543/0x1f40 fs/ioctl.c:814 __do_sys_ioctl fs/ioctl.c:872 [inline] __se_sys_ioctl+0x83/0x170 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #1 (&ni->file.run_lock){++++}-{3:3}: down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498 attr_data_get_block+0x14a/0x1a10 fs/ntfs3/attrib.c:831 ntfs_get_block_vbo+0x329/0xc90 fs/ntfs3/inode.c:593 do_mpage_readpage+0x849/0x1f00 fs/mpage.c:231 mpage_readahead+0x3e9/0x920 fs/mpage.c:389 read_pages+0x172/0x920 mm/readahead.c:130 page_cache_ra_unbounded+0x7f4/0x8f0 mm/readahead.c:239 page_cache_sync_readahead include/linux/pagemap.h:833 [inline] filemap_get_pages mm/filemap.c:2551 [inline] filemap_read+0x5ef/0x2560 mm/filemap.c:2634 __kernel_read+0x51d/0x980 fs/read_write.c:443 integrity_kernel_read+0x86/0xd0 security/integrity/iint.c:228 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:485 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline] ima_calc_file_hash+0x946/0x1940 security/integrity/ima/ima_crypto.c:573 ima_collect_measurement+0x335/0x7e0 security/integrity/ima/ima_api.c:255 process_measurement+0x1185/0x1c20 security/integrity/ima/ima_main.c:351 ima_file_check+0xc7/0x110 security/integrity/ima/ima_main.c:533 do_open fs/namei.c:3618 [inline] path_openat+0x27cf/0x2fb0 fs/namei.c:3750 do_filp_open+0x1df/0x400 fs/namei.c:3777 do_sys_openat2+0x14b/0x500 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_openat fs/open.c:1287 [inline] __se_sys_openat fs/open.c:1282 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1282 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #0 (mapping.invalidate_lock#3){.+.+}-{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+0x2c66/0x7b50 kernel/locking/lockdep.c:5012 lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623 down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498 filemap_invalidate_lock_shared include/linux/fs.h:842 [inline] filemap_fault+0x69f/0x13a0 mm/filemap.c:3081 __do_fault+0x141/0x330 mm/memory.c:3928 do_read_fault mm/memory.c:4264 [inline] do_fault mm/memory.c:4392 [inline] handle_pte_fault mm/memory.c:4650 [inline] __handle_mm_fault mm/memory.c:4785 [inline] handle_mm_fault+0x2982/0x4440 mm/memory.c:4883 faultin_page mm/gup.c:976 [inline] __get_user_pages+0x952/0x11e0 mm/gup.c:1197 __get_user_pages_locked mm/gup.c:1382 [inline] get_user_pages_unlocked+0x255/0x720 mm/gup.c:2222 __gup_longterm_unlocked mm/gup.c:2823 [inline] internal_get_user_pages_fast+0x1cd1/0x20b0 mm/gup.c:2911 iov_iter_get_pages+0x228/0x5f0 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+0x101b/0x3b20 fs/direct-io.c:1368 blockdev_direct_IO include/linux/fs.h:3345 [inline] ntfs_direct_IO+0x194/0x390 fs/ntfs3/inode.c:800 generic_file_direct_write+0x222/0x470 mm/filemap.c:3687 __generic_file_write_iter+0x2b2/0x4e0 mm/filemap.c:3869 ntfs_file_write_iter+0x4d5/0x590 fs/ntfs3/file.c:1151 call_write_iter include/linux/fs.h:2173 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x748/0xd70 fs/read_write.c:594 ksys_write+0x153/0x260 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 other info that might help us debug this: Chain exists of: mapping.invalidate_lock#3 --> &ni->file.run_lock --> &mm->mmap_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&mm->mmap_lock); lock(&ni->file.run_lock); lock(&mm->mmap_lock); lock(mapping.invalidate_lock#3); *** DEADLOCK *** 4 locks held by syz.0.17/5076: #0: ffff88805da314f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2bf/0x370 fs/file.c:1056 #1: ffff888073258460 (sb_writers#13){.+.+}-{0:0}, at: vfs_write+0x296/0xd70 fs/read_write.c:590 #2: ffff8880615279a0 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: inode_trylock include/linux/fs.h:807 [inline] #2: ffff8880615279a0 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: ntfs_file_write_iter+0x1d1/0x590 fs/ntfs3/file.c:1130 #3: ffff88805e582428 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable include/linux/mmap_lock.h:126 [inline] #3: ffff88805e582428 (&mm->mmap_lock){++++}-{3:3}, at: __get_user_pages_locked mm/gup.c:1433 [inline] #3: ffff88805e582428 (&mm->mmap_lock){++++}-{3:3}, at: get_user_pages_unlocked+0x3cb/0x720 mm/gup.c:2222 stack backtrace: CPU: 1 PID: 5076 Comm: syz.0.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 Call Trace: dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106 check_noncircular+0x296/0x330 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+0x2c66/0x7b50 kernel/locking/lockdep.c:5012 lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623 down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498 filemap_invalidate_lock_shared include/linux/fs.h:842 [inline] filemap_fault+0x69f/0x13a0 mm/filemap.c:3081 __do_fault+0x141/0x330 mm/memory.c:3928 do_read_fault mm/memory.c:4264 [inline] do_fault mm/memory.c:4392 [inline] handle_pte_fault mm/memory.c:4650 [inline] __handle_mm_fault mm/memory.c:4785 [inline] handle_mm_fault+0x2982/0x4440 mm/memory.c:4883 faultin_page mm/gup.c:976 [inline] __get_user_pages+0x952/0x11e0 mm/gup.c:1197 __get_user_pages_locked mm/gup.c:1382 [inline] get_user_pages_unlocked+0x255/0x720 mm/gup.c:2222 __gup_longterm_unlocked mm/gup.c:2823 [inline] internal_get_user_pages_fast+0x1cd1/0x20b0 mm/gup.c:2911 iov_iter_get_pages+0x228/0x5f0 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+0x101b/0x3b20 fs/direct-io.c:1368 blockdev_direct_IO include/linux/fs.h:3345 [inline] ntfs_direct_IO+0x194/0x390 fs/ntfs3/inode.c:800 generic_file_direct_write+0x222/0x470 mm/filemap.c:3687 __generic_file_write_iter+0x2b2/0x4e0 mm/filemap.c:3869 ntfs_file_write_iter+0x4d5/0x590 fs/ntfs3/file.c:1151 call_write_iter include/linux/fs.h:2173 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x748/0xd70 fs/read_write.c:594 ksys_write+0x153/0x260 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f2a249e8339 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2a2404c028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f2a24c23fa0 RCX: 00007f2a249e8339 RDX: 0000000000032600 RSI: 0000200000000000 RDI: 0000000000000005 RBP: 00007f2a24a7bd68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2a24c24038 R14: 00007f2a24c23fa0 R15: 00007ffc570d90c8