syzbot

======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.9.1191/22318 is trying to acquire lock:
ffff88805e4172d8 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1222 [inline]
ffff88805e4172d8 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: attr_data_get_block+0x1bf/0x2a0 fs/ntfs3/attrib.c:976

but task is already holding lock:
ffff88805e417760 (mapping.invalidate_lock#7){.+.+}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1089 [inline]
ffff88805e417760 (mapping.invalidate_lock#7){.+.+}-{4:4}, at: do_page_cache_ra mm/readahead.c:347 [inline]
ffff88805e417760 (mapping.invalidate_lock#7){.+.+}-{4:4}, at: page_cache_ra_order+0x2b1/0x4a0 mm/readahead.c:558

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (mapping.invalidate_lock#7){.+.+}-{4:4}:
       down_read+0x97/0x200 kernel/locking/rwsem.c:1574
       filemap_invalidate_lock_shared include/linux/fs.h:1089 [inline]
       filemap_fault+0x6e0/0x13c0 mm/filemap.c:3570
       __do_fault+0x138/0x2a0 mm/memory.c:5425
       do_shared_fault mm/memory.c:5924 [inline]
       do_fault mm/memory.c:5998 [inline]
       do_pte_missing+0x659/0x28f0 mm/memory.c:4566
       handle_pte_fault mm/memory.c:6379 [inline]
       __handle_mm_fault mm/memory.c:6517 [inline]
       handle_mm_fault+0xd28/0x13f0 mm/memory.c:6686
       do_user_addr_fault+0x744/0x1340 arch/x86/mm/fault.c:1394
       handle_page_fault arch/x86/mm/fault.c:1483 [inline]
       exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536
       asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
       stac arch/x86/include/asm/smap.h:-1 [inline]
       filldir64+0x29e/0x620 fs/readdir.c:365
       dir_emit include/linux/fs.h:3587 [inline]
       ntfs_dir_emit fs/ntfs3/dir.c:346 [inline]
       ntfs_read_hdr+0x8a4/0xc10 fs/ntfs3/dir.c:387
       ntfs_readdir+0x9ea/0xec0 fs/ntfs3/dir.c:547
       iterate_dir+0x2f1/0x4e0 fs/readdir.c:110
       __do_sys_getdents64 fs/readdir.c:399 [inline]
       __se_sys_getdents64+0xf1/0x280 fs/readdir.c:384
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&ni->ni_lock#2/5){+.+.}-{4:4}:
       check_prev_add kernel/locking/lockdep.c:3165 [inline]
       check_prevs_add kernel/locking/lockdep.c:3284 [inline]
       validate_chain kernel/locking/lockdep.c:3908 [inline]
       __lock_acquire+0x1520/0x2ce0 kernel/locking/lockdep.c:5237
       lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868
       __mutex_lock_common kernel/locking/rtmutex_api.c:559 [inline]
       mutex_lock_nested+0x5a/0x1d0 kernel/locking/rtmutex_api.c:578
       ni_lock fs/ntfs3/ntfs_fs.h:1222 [inline]
       attr_data_get_block+0x1bf/0x2a0 fs/ntfs3/attrib.c:976
       ntfs_iomap_begin+0x4f0/0xf10 fs/ntfs3/inode.c:771
       iomap_iter+0x5f5/0xf80 fs/iomap/iter.c:110
       iomap_readahead+0xa4a/0xe80 fs/iomap/buffered-io.c:721
       ntfs_readahead+0x193/0x210 fs/ntfs3/inode.c:673
       read_pages+0x193/0x5a0 mm/readahead.c:174
       page_cache_ra_unbounded+0x679/0x8f0 mm/readahead.c:315
       do_page_cache_ra mm/readahead.c:348 [inline]
       page_cache_ra_order+0x2c1/0x4a0 mm/readahead.c:558
       filemap_get_pages+0x493/0x1e80 mm/filemap.c:2704
       filemap_read+0x429/0x11e0 mm/filemap.c:2814
       __kernel_read+0x4d3/0x970 fs/read_write.c:532
       integrity_kernel_read+0x89/0xd0 security/integrity/iint.c:28
       ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:222 [inline]
       ima_calc_file_hash+0x45d/0x8a0 security/integrity/ima/ima_crypto.c:280
       ima_collect_measurement+0x521/0xa10 security/integrity/ima/ima_api.c:300
       process_measurement+0x1282/0x1c20 security/integrity/ima/ima_main.c:425
       ima_file_check+0xe1/0x130 security/integrity/ima/ima_main.c:685
       security_file_post_open+0xb3/0x260 security/security.c:2755
       do_open fs/namei.c:4702 [inline]
       path_openat+0x2eac/0x3850 fs/namei.c:4863
       do_file_open+0x23e/0x4a0 fs/namei.c:4892
       do_sys_openat2+0x115/0x200 fs/open.c:1368
       do_sys_open fs/open.c:1374 [inline]
       __do_sys_openat fs/open.c:1390 [inline]
       __se_sys_openat fs/open.c:1385 [inline]
       __x64_sys_openat+0x138/0x170 fs/open.c:1385
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  rlock(mapping.invalidate_lock#7);
                               lock(&ni->ni_lock#2/5);
                               lock(mapping.invalidate_lock#7);
  lock(&ni->ni_lock#2/5);

 *** DEADLOCK ***

2 locks held by syz.9.1191/22318:
 #0: ffff888011fed158 (&ima_iint_mutex_key[depth]){+.+.}-{4:4}, at: process_measurement+0x7e0/0x1c20 security/integrity/ima/ima_main.c:319
 #1: ffff88805e417760 (mapping.invalidate_lock#7){.+.+}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1089 [inline]
 #1: ffff88805e417760 (mapping.invalidate_lock#7){.+.+}-{4:4}, at: do_page_cache_ra mm/readahead.c:347 [inline]
 #1: ffff88805e417760 (mapping.invalidate_lock#7){.+.+}-{4:4}, at: page_cache_ra_order+0x2b1/0x4a0 mm/readahead.c:558

stack backtrace:
CPU: 0 UID: 0 PID: 22318 Comm: syz.9.1191 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2043
 check_noncircular+0x12e/0x150 kernel/locking/lockdep.c:2175
 check_prev_add kernel/locking/lockdep.c:3165 [inline]
 check_prevs_add kernel/locking/lockdep.c:3284 [inline]
 validate_chain kernel/locking/lockdep.c:3908 [inline]
 __lock_acquire+0x1520/0x2ce0 kernel/locking/lockdep.c:5237
 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868
 __mutex_lock_common kernel/locking/rtmutex_api.c:559 [inline]
 mutex_lock_nested+0x5a/0x1d0 kernel/locking/rtmutex_api.c:578
 ni_lock fs/ntfs3/ntfs_fs.h:1222 [inline]
 attr_data_get_block+0x1bf/0x2a0 fs/ntfs3/attrib.c:976
 ntfs_iomap_begin+0x4f0/0xf10 fs/ntfs3/inode.c:771
 iomap_iter+0x5f5/0xf80 fs/iomap/iter.c:110
 iomap_readahead+0xa4a/0xe80 fs/iomap/buffered-io.c:721
 ntfs_readahead+0x193/0x210 fs/ntfs3/inode.c:673
 read_pages+0x193/0x5a0 mm/readahead.c:174
 page_cache_ra_unbounded+0x679/0x8f0 mm/readahead.c:315
 do_page_cache_ra mm/readahead.c:348 [inline]
 page_cache_ra_order+0x2c1/0x4a0 mm/readahead.c:558
 filemap_get_pages+0x493/0x1e80 mm/filemap.c:2704
 filemap_read+0x429/0x11e0 mm/filemap.c:2814
 __kernel_read+0x4d3/0x970 fs/read_write.c:532
 integrity_kernel_read+0x89/0xd0 security/integrity/iint.c:28
 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:222 [inline]
 ima_calc_file_hash+0x45d/0x8a0 security/integrity/ima/ima_crypto.c:280
 ima_collect_measurement+0x521/0xa10 security/integrity/ima/ima_api.c:300
 process_measurement+0x1282/0x1c20 security/integrity/ima/ima_main.c:425
 ima_file_check+0xe1/0x130 security/integrity/ima/ima_main.c:685
 security_file_post_open+0xb3/0x260 security/security.c:2755
 do_open fs/namei.c:4702 [inline]
 path_openat+0x2eac/0x3850 fs/namei.c:4863
 do_file_open+0x23e/0x4a0 fs/namei.c:4892
 do_sys_openat2+0x115/0x200 fs/open.c:1368
 do_sys_open fs/open.c:1374 [inline]
 __do_sys_openat fs/open.c:1390 [inline]
 __se_sys_openat fs/open.c:1385 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1385
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f80cfbade59
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:00007f80cde06028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f80cfe35fa0 RCX: 00007f80cfbade59
RDX: 0000000000020542 RSI: 0000200000000040 RDI: ffffffffffffff9c
RBP: 00007f80cfc43e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000015 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f80cfe36038 R14: 00007f80cfe35fa0 R15: 00007fff37612098
 </TASK>
ntfs3(loop9): ino=1e, "file1" attr_set_size_ex