syz-executor190[6100]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set
loop0: detected capacity change from 0 to 4096
======================================================
WARNING: possible circular locking dependency detected
6.6.0-rc7-syzkaller-g8de1e7afcc1c #0 Not tainted
------------------------------------------------------
syz-executor190/6100 is trying to acquire lock:
ffff0000dfc801b0 (&ni->file.run_lock#3){++++}-{3:3}, at: attr_data_get_block+0x234/0x2290 fs/ntfs3/attrib.c:902

but task is already holding lock:
ffff0000d4ccb190 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:124 [inline]
ffff0000d4ccb190 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x154/0x3d4 mm/util.c:544

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&mm->mmap_lock){++++}-{3:3}:
       __might_fault+0xc4/0x124 mm/memory.c:5896
       _copy_to_user include/linux/uaccess.h:165 [inline]
       copy_to_user include/linux/uaccess.h:191 [inline]
       fiemap_fill_next_extent+0x1b4/0x424 fs/ioctl.c:145
       ni_fiemap+0x7dc/0xe10 fs/ntfs3/frecord.c:2065
       ntfs_fiemap+0x110/0x168 fs/ntfs3/file.c:1163
       ioctl_fiemap fs/ioctl.c:220 [inline]
       do_vfs_ioctl+0x1958/0x2704 fs/ioctl.c:811
       __do_sys_ioctl fs/ioctl.c:869 [inline]
       __se_sys_ioctl fs/ioctl.c:857 [inline]
       __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:857
       __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
       invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
       el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
       do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
       el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
       el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
       el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595

-> #0 (&ni->file.run_lock#3){++++}-{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:3868 [inline]
       __lock_acquire+0x3370/0x75e8 kernel/locking/lockdep.c:5136
       lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5753
       down_read+0x58/0x2fc kernel/locking/rwsem.c:1520
       attr_data_get_block+0x234/0x2290 fs/ntfs3/attrib.c:902
       ntfs_file_mmap+0x3b0/0x644 fs/ntfs3/file.c:291
       call_mmap include/linux/fs.h:1961 [inline]
       mmap_region+0xd90/0x19e0 mm/mmap.c:2754
       do_mmap+0x9dc/0xfd8 mm/mmap.c:1354
       vm_mmap_pgoff+0x1a0/0x3d4 mm/util.c:546
       ksys_mmap_pgoff+0x3c8/0x5b0 mm/mmap.c:1400
       __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:37 [inline]
       invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
       el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
       do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
       el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
       el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
       el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595

other info that might help us debug this:

 Possible unsafe locking scenario:

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

 *** DEADLOCK ***

1 lock held by syz-executor190/6100:
 #0: ffff0000d4ccb190 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:124 [inline]
 #0: ffff0000d4ccb190 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x154/0x3d4 mm/util.c:544

stack backtrace:
CPU: 1 PID: 6100 Comm: syz-executor190 Not tainted 6.6.0-rc7-syzkaller-g8de1e7afcc1c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233
 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 dump_stack+0x1c/0x28 lib/dump_stack.c:113
 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:3868 [inline]
 __lock_acquire+0x3370/0x75e8 kernel/locking/lockdep.c:5136
 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5753
 down_read+0x58/0x2fc kernel/locking/rwsem.c:1520
 attr_data_get_block+0x234/0x2290 fs/ntfs3/attrib.c:902
 ntfs_file_mmap+0x3b0/0x644 fs/ntfs3/file.c:291
 call_mmap include/linux/fs.h:1961 [inline]
 mmap_region+0xd90/0x19e0 mm/mmap.c:2754
 do_mmap+0x9dc/0xfd8 mm/mmap.c:1354
 vm_mmap_pgoff+0x1a0/0x3d4 mm/util.c:546
 ksys_mmap_pgoff+0x3c8/0x5b0 mm/mmap.c:1400
 __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:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595