ntfs3: loop1: Different NTFS sector size (1024) and media sector size (512).
======================================================
WARNING: possible circular locking dependency detected
6.10.0-rc7-syzkaller-gc912bf709078 #0 Not tainted
------------------------------------------------------
syz.1.554/9180 is trying to acquire lock:
ffff0000cfe13188 (&mm->mmap_lock){++++}-{3:3}, at: __might_fault+0x9c/0x124 mm/memory.c:6233

but task is already holding lock:
ffff0000ec702690 (&ni->file.run_lock#3){++++}-{3:3}, at: ni_fiemap+0x2c4/0xe10 fs/ntfs3/frecord.c:1961

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&ni->file.run_lock#3){++++}-{3:3}:
       down_read+0x58/0x2fc kernel/locking/rwsem.c:1526
       attr_data_get_block+0x238/0x23ac fs/ntfs3/attrib.c:902
       ntfs_file_mmap+0x3f0/0x6f0 fs/ntfs3/file.c:294
       call_mmap include/linux/fs.h:2107 [inline]
       mmap_region+0xbb8/0x17d8 mm/mmap.c:2886
       do_mmap+0x788/0xd90 mm/mmap.c:1397
       vm_mmap_pgoff+0x1a0/0x38c mm/util.c:573
       ksys_mmap_pgoff+0x3a4/0x5c8 mm/mmap.c:1443
       __do_sys_mmap arch/arm64/kernel/sys.c:28 [inline]
       __se_sys_mmap arch/arm64/kernel/sys.c:21 [inline]
       __arm64_sys_mmap+0xf8/0x110 arch/arm64/kernel/sys.c:21
       __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
       invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
       el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131
       do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150
       el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
       el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
       el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

-> #0 (&mm->mmap_lock){++++}-{3:3}:
       check_prev_add kernel/locking/lockdep.c:3134 [inline]
       check_prevs_add kernel/locking/lockdep.c:3253 [inline]
       validate_chain kernel/locking/lockdep.c:3869 [inline]
       __lock_acquire+0x3384/0x763c kernel/locking/lockdep.c:5137
       lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5754
       __might_fault+0xc4/0x124 mm/memory.c:6234
       _copy_to_user include/linux/uaccess.h:165 [inline]
       copy_to_user include/linux/uaccess.h:191 [inline]
       fiemap_fill_next_extent+0x1b0/0x390 fs/ioctl.c:145
       ni_fiemap+0x744/0xe10 fs/ntfs3/frecord.c:2044
       ntfs_fiemap+0x110/0x168 fs/ntfs3/file.c:1215
       ioctl_fiemap fs/ioctl.c:220 [inline]
       do_vfs_ioctl+0x172c/0x2404 fs/ioctl.c:841
       __do_sys_ioctl fs/ioctl.c:905 [inline]
       __se_sys_ioctl fs/ioctl.c:893 [inline]
       __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:893
       __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
       invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
       el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131
       do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150
       el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
       el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
       el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  rlock(&ni->file.run_lock#3);
                               lock(&mm->mmap_lock);
                               lock(&ni->file.run_lock#3);
  rlock(&mm->mmap_lock);

 *** DEADLOCK ***

2 locks held by syz.1.554/9180:
 #0: ffff0000ec7025e0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1123 [inline]
 #0: ffff0000ec7025e0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_fiemap+0xec/0x168 fs/ntfs3/file.c:1213
 #1: ffff0000ec702690 (&ni->file.run_lock#3){++++}-{3:3}, at: ni_fiemap+0x2c4/0xe10 fs/ntfs3/frecord.c:1961

stack backtrace:
CPU: 1 PID: 9180 Comm: syz.1.554 Not tainted 6.10.0-rc7-syzkaller-gc912bf709078 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114
 dump_stack+0x1c/0x28 lib/dump_stack.c:123
 print_circular_bug+0x150/0x1b8 kernel/locking/lockdep.c:2060
 check_noncircular+0x310/0x404 kernel/locking/lockdep.c:2187
 check_prev_add kernel/locking/lockdep.c:3134 [inline]
 check_prevs_add kernel/locking/lockdep.c:3253 [inline]
 validate_chain kernel/locking/lockdep.c:3869 [inline]
 __lock_acquire+0x3384/0x763c kernel/locking/lockdep.c:5137
 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5754
 __might_fault+0xc4/0x124 mm/memory.c:6234
 _copy_to_user include/linux/uaccess.h:165 [inline]
 copy_to_user include/linux/uaccess.h:191 [inline]
 fiemap_fill_next_extent+0x1b0/0x390 fs/ioctl.c:145
 ni_fiemap+0x744/0xe10 fs/ntfs3/frecord.c:2044
 ntfs_fiemap+0x110/0x168 fs/ntfs3/file.c:1215
 ioctl_fiemap fs/ioctl.c:220 [inline]
 do_vfs_ioctl+0x172c/0x2404 fs/ioctl.c:841
 __do_sys_ioctl fs/ioctl.c:905 [inline]
 __se_sys_ioctl fs/ioctl.c:893 [inline]
 __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:893
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598