======================================================
WARNING: possible circular locking dependency detected
6.14.0-syzkaller-13189-ge48e99b6edf4 #0 Not tainted
------------------------------------------------------
syz.0.200/7488 is trying to acquire lock:
ffff88805db26f28 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1105 [inline]
ffff88805db26f28 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ntfs_read_folio+0x193/0x210 fs/ntfs3/inode.c:736
but task is already holding lock:
ffff88805db27360 (mapping.invalidate_lock#3){.+.+}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:922 [inline]
ffff88805db27360 (mapping.invalidate_lock#3){.+.+}-{4:4}, at: filemap_create_folio mm/filemap.c:2526 [inline]
ffff88805db27360 (mapping.invalidate_lock#3){.+.+}-{4:4}, at: filemap_get_pages+0xdcb/0x1fc0 mm/filemap.c:2596
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (mapping.invalidate_lock#3){.+.+}-{4:4}:
lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866
down_read+0xb3/0xa50 kernel/locking/rwsem.c:1524
filemap_invalidate_lock_shared include/linux/fs.h:922 [inline]
filemap_fault+0x66b/0x13d0 mm/filemap.c:3390
__do_fault+0x135/0x390 mm/memory.c:5098
do_read_fault mm/memory.c:5518 [inline]
do_fault mm/memory.c:5652 [inline]
do_pte_missing mm/memory.c:4160 [inline]
handle_pte_fault+0x3f0c/0x61c0 mm/memory.c:5997
__handle_mm_fault mm/memory.c:6140 [inline]
handle_mm_fault+0x1030/0x1aa0 mm/memory.c:6309
do_user_addr_fault arch/x86/mm/fault.c:1388 [inline]
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x2bb/0x920 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
rep_movs_alternative+0x4a/0x70 arch/x86/lib/copy_user_64.S:68
copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:141 [inline]
_inline_copy_from_user include/linux/uaccess.h:178 [inline]
_copy_from_user+0x7b/0xb0 lib/usercopy.c:18
copy_from_user include/linux/uaccess.h:212 [inline]
io_uring_setup io_uring/io_uring.c:3810 [inline]
__do_sys_io_uring_setup io_uring/io_uring.c:3862 [inline]
__se_sys_io_uring_setup+0x169/0x360 io_uring/io_uring.c:3853
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #1 (&mm->mmap_lock){++++}-{4:4}:
lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866
__might_fault+0xc6/0x120 mm/memory.c:7151
_inline_copy_to_user include/linux/uaccess.h:192 [inline]
_copy_to_user+0x2c/0xb0 lib/usercopy.c:26
copy_to_user include/linux/uaccess.h:225 [inline]
fiemap_fill_next_extent+0x237/0x420 fs/ioctl.c:145
ni_fiemap+0x1009/0x12a0 fs/ntfs3/frecord.c:1896
ntfs_fiemap+0x134/0x180 fs/ntfs3/file.c:1380
ioctl_fiemap fs/ioctl.c:220 [inline]
do_vfs_ioctl+0x1975/0x2750 fs/ioctl.c:840
__do_sys_ioctl fs/ioctl.c:904 [inline]
__se_sys_ioctl+0x80/0x160 fs/ioctl.c:892
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 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:3166 [inline]
check_prevs_add kernel/locking/lockdep.c:3285 [inline]
validate_chain+0xa69/0x24e0 kernel/locking/lockdep.c:3909
__lock_acquire+0xad5/0xd80 kernel/locking/lockdep.c:5235
lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866
__mutex_lock_common kernel/locking/mutex.c:601 [inline]
__mutex_lock+0x1a5/0x10c0 kernel/locking/mutex.c:746
ni_lock fs/ntfs3/ntfs_fs.h:1105 [inline]
ntfs_read_folio+0x193/0x210 fs/ntfs3/inode.c:736
filemap_read_folio+0x14a/0x3b0 mm/filemap.c:2400
filemap_create_folio mm/filemap.c:2535 [inline]
filemap_get_pages+0x104f/0x1fc0 mm/filemap.c:2596
filemap_splice_read+0x690/0xef0 mm/filemap.c:2980
do_splice_read fs/splice.c:979 [inline]
splice_direct_to_actor+0x4af/0xc90 fs/splice.c:1083
do_splice_direct_actor fs/splice.c:1201 [inline]
do_splice_direct+0x281/0x3d0 fs/splice.c:1227
vfs_copy_file_range+0xbb9/0x1480 fs/read_write.c:1625
__do_sys_copy_file_range fs/read_write.c:1675 [inline]
__se_sys_copy_file_range+0x3fe/0x600 fs/read_write.c:1642
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
other info that might help us debug this:
Chain exists of:
&ni->ni_lock#2/5 --> &mm->mmap_lock --> mapping.invalidate_lock#3
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
rlock(mapping.invalidate_lock#3);
lock(&mm->mmap_lock);
lock(mapping.invalidate_lock#3);
lock(&ni->ni_lock#2/5);
*** DEADLOCK ***
1 lock held by syz.0.200/7488:
#0: ffff88805db27360 (mapping.invalidate_lock#3){.+.+}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:922 [inline]
#0: ffff88805db27360 (mapping.invalidate_lock#3){.+.+}-{4:4}, at: filemap_create_folio mm/filemap.c:2526 [inline]
#0: ffff88805db27360 (mapping.invalidate_lock#3){.+.+}-{4:4}, at: filemap_get_pages+0xdcb/0x1fc0 mm/filemap.c:2596
stack backtrace:
CPU: 0 UID: 0 PID: 7488 Comm: syz.0.200 Not tainted 6.14.0-syzkaller-13189-ge48e99b6edf4 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2079
check_noncircular+0x142/0x160 kernel/locking/lockdep.c:2211
check_prev_add kernel/locking/lockdep.c:3166 [inline]
check_prevs_add kernel/locking/lockdep.c:3285 [inline]
validate_chain+0xa69/0x24e0 kernel/locking/lockdep.c:3909
__lock_acquire+0xad5/0xd80 kernel/locking/lockdep.c:5235
lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866
__mutex_lock_common kernel/locking/mutex.c:601 [inline]
__mutex_lock+0x1a5/0x10c0 kernel/locking/mutex.c:746
ni_lock fs/ntfs3/ntfs_fs.h:1105 [inline]
ntfs_read_folio+0x193/0x210 fs/ntfs3/inode.c:736
filemap_read_folio+0x14a/0x3b0 mm/filemap.c:2400
filemap_create_folio mm/filemap.c:2535 [inline]
filemap_get_pages+0x104f/0x1fc0 mm/filemap.c:2596
filemap_splice_read+0x690/0xef0 mm/filemap.c:2980
do_splice_read fs/splice.c:979 [inline]
splice_direct_to_actor+0x4af/0xc90 fs/splice.c:1083
do_splice_direct_actor fs/splice.c:1201 [inline]
do_splice_direct+0x281/0x3d0 fs/splice.c:1227
vfs_copy_file_range+0xbb9/0x1480 fs/read_write.c:1625
__do_sys_copy_file_range fs/read_write.c:1675 [inline]
__se_sys_copy_file_range+0x3fe/0x600 fs/read_write.c:1642
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f157fd8d169
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:00007f1580bc4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 00007f157ffa5fa0 RCX: 00007f157fd8d169
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000009
RBP: 00007f157fe0e2a0 R08: 0000000000400000 R09: 0000000000000000
R10: 00002000000000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f157ffa5fa0 R15: 00007ffcfea89548
</TASK>