====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.8.1194/9184 is trying to acquire lock: ffff88807415c728 (&mm->mmap_lock){++++}-{3:3}, at: __might_fault+0x90/0x110 mm/memory.c:5356 but task is already holding lock: ffff888052046920 (&indx->run_lock){.+.+}-{3:3}, at: ni_fiemap+0x2de/0xc20 fs/ntfs3/frecord.c:1915 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&indx->run_lock){.+.+}-{3:3}: down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498 indx_read+0x2b5/0xc90 fs/ntfs3/index.c:1066 indx_find+0x4c6/0xba0 fs/ntfs3/index.c:1187 indx_insert_entry+0x4ea/0x720 fs/ntfs3/index.c:1953 ni_add_name+0x4b9/0x7c0 fs/ntfs3/frecord.c:2993 ntfs_link_inode+0x315/0x3d0 fs/ntfs3/inode.c:1716 ntfs_link+0x114/0x280 fs/ntfs3/namei.c:154 vfs_link+0x615/0x7c0 fs/namei.c:4565 do_linkat+0x277/0x7b0 fs/namei.c:4636 __do_sys_link fs/namei.c:4670 [inline] __se_sys_link fs/namei.c:4668 [inline] __x64_sys_link+0x82/0x90 fs/namei.c:4668 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 -> #2 (&ni->ni_lock/5){+.+.}-{3:3}: __mutex_lock_common+0x1eb/0x2390 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 ni_lock fs/ntfs3/ntfs_fs.h:1100 [inline] ntfs_readpage+0x17c/0x200 fs/ntfs3/inode.c:725 filemap_read_page+0x17b/0x4c0 mm/filemap.c:2386 filemap_update_page mm/filemap.c:2464 [inline] filemap_get_pages mm/filemap.c:2574 [inline] filemap_read+0x13d5/0x2480 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:3618 [inline] path_openat+0x2735/0x2f30 fs/namei.c:3750 do_filp_open+0x1b3/0x3e0 fs/namei.c:3777 do_sys_openat2+0x142/0x4a0 fs/open.c:1253 __do_sys_openat2 fs/open.c:1310 [inline] __se_sys_openat2 fs/open.c:1288 [inline] __x64_sys_openat2+0x21a/0x280 fs/open.c:1288 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 (mapping.invalidate_lock#5){.+.+}-{3:3}: 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+0x2946/0x43b0 mm/memory.c:4883 faultin_page mm/gup.c:976 [inline] __get_user_pages+0x93e/0x11c0 mm/gup.c:1197 populate_vma_page_range+0x213/0x290 mm/gup.c:1529 __mm_populate+0x26f/0x3a0 mm/gup.c:1638 mm_populate include/linux/mm.h:2646 [inline] vm_mmap_pgoff+0x203/0x2b0 mm/util.c:556 ksys_mmap_pgoff+0x542/0x780 mm/mmap.c:1635 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 (&mm->mmap_lock){++++}-{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 __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+0x92d/0xc20 fs/ntfs3/frecord.c:2019 ntfs_fiemap+0xd7/0x130 fs/ntfs3/file.c:1236 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 other info that might help us debug this: Chain exists of: &mm->mmap_lock --> &ni->ni_lock/5 --> &indx->run_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&indx->run_lock); lock(&ni->ni_lock/5); lock(&indx->run_lock); lock(&mm->mmap_lock); *** DEADLOCK *** 2 locks held by syz.8.1194/9184: #0: ffff888052046840 (&ni->ni_lock/5){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1100 [inline] #0: ffff888052046840 (&ni->ni_lock/5){+.+.}-{3:3}, at: ntfs_fiemap+0xc4/0x130 fs/ntfs3/file.c:1234 #1: ffff888052046920 (&indx->run_lock){.+.+}-{3:3}, at: ni_fiemap+0x2de/0xc20 fs/ntfs3/frecord.c:1915 stack backtrace: CPU: 1 PID: 9184 Comm: syz.8.1194 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Call Trace: 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 __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+0x92d/0xc20 fs/ntfs3/frecord.c:2019 ntfs_fiemap+0xd7/0x130 fs/ntfs3/file.c:1236 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 RIP: 0033:0x7f732a38d6c9 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:00007f73285d3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f732a5e4090 RCX: 00007f732a38d6c9 RDX: 0000200000000040 RSI: 00000000c020660b RDI: 0000000000000004 RBP: 00007f732a40ff91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f732a5e4128 R14: 00007f732a5e4090 R15: 00007ffc3d66adc8