syzbot

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======================================================
WARNING: possible circular locking dependency detected
5.15.189-syzkaller #0 Not tainted
------------------------------------------------------
syz.0.17/4404 is trying to acquire lock:
ffff88806055fb40 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:842 [inline]
ffff88806055fb40 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_fault+0x68b/0x13b0 mm/filemap.c:3081

but task is already holding lock:
ffff88802b7d0128 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable include/linux/mmap_lock.h:126 [inline]
ffff88802b7d0128 (&mm->mmap_lock){++++}-{3:3}, at: __get_user_pages_locked mm/gup.c:1433 [inline]
ffff88802b7d0128 (&mm->mmap_lock){++++}-{3:3}, at: get_user_pages_unlocked+0x3b1/0x6f0 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+0x19d/0x360 fs/ioctl.c:144
       ni_fiemap+0x878/0xc20 fs/ntfs3/frecord.c:1998
       ntfs_fiemap+0xd7/0x130 fs/ntfs3/file.c:1233
       ioctl_fiemap fs/ioctl.c:219 [inline]
       do_vfs_ioctl+0x1464/0x1de0 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+0x10d/0x1880 fs/ntfs3/attrib.c:831
       ntfs_get_block_vbo+0x2f6/0xc60 fs/ntfs3/inode.c:591
       do_mpage_readpage+0x820/0x1e30 fs/mpage.c:231
       mpage_readahead+0x3a6/0x8a0 fs/mpage.c:389
       read_pages+0x165/0x920 mm/readahead.c:130
       page_cache_ra_unbounded+0x830/0x930 mm/readahead.c:239
       page_cache_sync_readahead include/linux/pagemap.h:833 [inline]
       filemap_get_pages mm/filemap.c:2551 [inline]
       filemap_read+0x589/0x2480 mm/filemap.c:2634
       __kernel_read+0x4eb/0x910 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+0x1546/0x18e0 security/integrity/ima/ima_crypto.c:573
       ima_collect_measurement+0x2ef/0x760 security/integrity/ima/ima_api.c:255
       process_measurement+0xfb9/0x1a10 security/integrity/ima/ima_main.c:351
       ima_file_check+0xc1/0x100 security/integrity/ima/ima_main.c:533
       do_open fs/namei.c:3610 [inline]
       path_openat+0x2735/0x2f30 fs/namei.c:3742
       do_filp_open+0x1b3/0x3e0 fs/namei.c:3769
       do_sys_openat2+0x142/0x4a0 fs/open.c:1253
       do_sys_open fs/open.c:1269 [inline]
       __do_sys_openat fs/open.c:1285 [inline]
       __se_sys_openat fs/open.c:1280 [inline]
       __x64_sys_openat+0x135/0x160 fs/open.c:1280
       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+0x2c33/0x7c60 kernel/locking/lockdep.c:5012
       lock_acquire+0x197/0x3f0 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+0x68b/0x13b0 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+0x2949/0x43c0 mm/memory.c:4883
       faultin_page mm/gup.c:976 [inline]
       __get_user_pages+0x93e/0x11c0 mm/gup.c:1197
       __get_user_pages_locked mm/gup.c:1382 [inline]
       get_user_pages_unlocked+0x248/0x6f0 mm/gup.c:2222
       __gup_longterm_unlocked mm/gup.c:2823 [inline]
       internal_get_user_pages_fast+0x1c9d/0x2080 mm/gup.c:2911
       iov_iter_get_pages+0x225/0x5b0 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+0x1060/0x3c90 fs/direct-io.c:1368
       blockdev_direct_IO include/linux/fs.h:3344 [inline]
       ntfs_direct_IO+0x194/0x390 fs/ntfs3/inode.c:798
       generic_file_direct_write+0x22c/0x490 mm/filemap.c:3687
       __generic_file_write_iter+0x2b1/0x4e0 mm/filemap.c:3869
       ntfs_file_write_iter+0x4d5/0x590 fs/ntfs3/file.c:1144
       call_write_iter include/linux/fs.h:2172 [inline]
       new_sync_write fs/read_write.c:507 [inline]
       vfs_write+0x712/0xd00 fs/read_write.c:594
       ksys_write+0x14d/0x250 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.0.17/4404:
 #0: ffff8880782bd770 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2bf/0x370 fs/file.c:1058
 #1: ffff888071f98460 (sb_writers#13){.+.+}-{0:0}, at: vfs_write+0x28a/0xd00 fs/read_write.c:590
 #2: ffff88806055f9a0 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: inode_trylock include/linux/fs.h:807 [inline]
 #2: ffff88806055f9a0 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: ntfs_file_write_iter+0x1d1/0x590 fs/ntfs3/file.c:1123
 #3: ffff88802b7d0128 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable include/linux/mmap_lock.h:126 [inline]
 #3: ffff88802b7d0128 (&mm->mmap_lock){++++}-{3:3}, at: __get_user_pages_locked mm/gup.c:1433 [inline]
 #3: ffff88802b7d0128 (&mm->mmap_lock){++++}-{3:3}, at: get_user_pages_unlocked+0x3b1/0x6f0 mm/gup.c:2222

stack backtrace:
CPU: 1 PID: 4404 Comm: syz.0.17 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
 check_noncircular+0x274/0x310 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+0x2c33/0x7c60 kernel/locking/lockdep.c:5012
 lock_acquire+0x197/0x3f0 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+0x68b/0x13b0 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+0x2949/0x43c0 mm/memory.c:4883
 faultin_page mm/gup.c:976 [inline]
 __get_user_pages+0x93e/0x11c0 mm/gup.c:1197
 __get_user_pages_locked mm/gup.c:1382 [inline]
 get_user_pages_unlocked+0x248/0x6f0 mm/gup.c:2222
 __gup_longterm_unlocked mm/gup.c:2823 [inline]
 internal_get_user_pages_fast+0x1c9d/0x2080 mm/gup.c:2911
 iov_iter_get_pages+0x225/0x5b0 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+0x1060/0x3c90 fs/direct-io.c:1368
 blockdev_direct_IO include/linux/fs.h:3344 [inline]
 ntfs_direct_IO+0x194/0x390 fs/ntfs3/inode.c:798
 generic_file_direct_write+0x22c/0x490 mm/filemap.c:3687
 __generic_file_write_iter+0x2b1/0x4e0 mm/filemap.c:3869
 ntfs_file_write_iter+0x4d5/0x590 fs/ntfs3/file.c:1144
 call_write_iter include/linux/fs.h:2172 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x712/0xd00 fs/read_write.c:594
 ksys_write+0x14d/0x250 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: 0033:0x7fecb2e25be9
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:00007ffc2dc92d48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fecb304cfa0 RCX: 00007fecb2e25be9
RDX: 0000000000032600 RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007fecb2ea8e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fecb304cfa0 R14: 00007fecb304cfa0 R15: 0000000000000003
 </TASK>