ntfs3(loop8): Different NTFS sector size (4096) and media sector size (512).
ntfs3(loop8): ino=19, mi_enum_attr
ntfs3(loop8): Mark volume as dirty due to NTFS errors
======================================================
WARNING: possible circular locking dependency detected
6.14.0-rc6-syzkaller-00022-gb7f94fcf5546 #0 Not tainted
------------------------------------------------------
syz.8.441/9795 is trying to acquire lock:
ffff88807b1ce360 (&mm->mmap_lock){++++}-{4:4}, at: __might_fault+0xaa/0x120 mm/memory.c:6858
but task is already holding lock:
ffff88805b600fb0 (&ni->ni_lock#3/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1111 [inline]
ffff88805b600fb0 (&ni->ni_lock#3/5){+.+.}-{4:4}, at: ntfs_fiemap+0xff/0x180 fs/ntfs3/file.c:1358
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (&ni->ni_lock#3/5){+.+.}-{4:4}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
__mutex_lock_common kernel/locking/mutex.c:585 [inline]
__mutex_lock+0x19c/0x1010 kernel/locking/mutex.c:730
ni_lock fs/ntfs3/ntfs_fs.h:1111 [inline]
ntfs_fallocate+0x93e/0x1270 fs/ntfs3/file.c:684
vfs_fallocate+0x623/0x7a0 fs/open.c:338
ksys_fallocate fs/open.c:362 [inline]
__do_sys_fallocate fs/open.c:367 [inline]
__se_sys_fallocate fs/open.c:365 [inline]
__x64_sys_fallocate+0xbc/0x110 fs/open.c:365
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #2 (mapping.invalidate_lock#5){++++}-{4:4}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
down_read+0xb1/0xa40 kernel/locking/rwsem.c:1524
filemap_invalidate_lock_shared include/linux/fs.h:932 [inline]
filemap_fault+0x7f8/0x16c0 mm/filemap.c:3434
__do_fault+0x135/0x390 mm/memory.c:4990
do_read_fault mm/memory.c:5410 [inline]
do_fault mm/memory.c:5544 [inline]
do_pte_missing mm/memory.c:4060 [inline]
handle_pte_fault mm/memory.c:5907 [inline]
__handle_mm_fault+0x4c44/0x70f0 mm/memory.c:6050
handle_mm_fault+0x2c1/0x7e0 mm/memory.c:6219
do_user_addr_fault arch/x86/mm/fault.c:1337 [inline]
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x459/0x8b0 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
-> #1 (&vma->vm_lock->lock){++++}-{4:4}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
down_write+0x99/0x220 kernel/locking/rwsem.c:1577
vma_start_write include/linux/mm.h:770 [inline]
vma_link+0x28c/0x500 mm/vma.c:1696
insert_vm_struct+0x2f7/0x410 mm/mmap.c:1356
__bprm_mm_init fs/exec.c:281 [inline]
bprm_mm_init fs/exec.c:385 [inline]
alloc_bprm+0x7f9/0xbe0 fs/exec.c:1575
kernel_execve+0x99/0xa50 fs/exec.c:1991
try_to_run_init_process init/main.c:1385 [inline]
kernel_init+0xed/0x2b0 init/main.c:1513
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
-> #0 (&mm->mmap_lock){++++}-{4:4}:
check_prev_add kernel/locking/lockdep.c:3163 [inline]
check_prevs_add kernel/locking/lockdep.c:3282 [inline]
validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3906
__lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
__might_fault+0xc6/0x120 mm/memory.c:6858
_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+0x235/0x420 fs/ioctl.c:145
ni_fiemap+0x970/0x1270 fs/ntfs3/frecord.c:2042
ntfs_fiemap+0x132/0x180 fs/ntfs3/file.c:1360
ioctl_fiemap fs/ioctl.c:220 [inline]
do_vfs_ioctl+0x1981/0x2770 fs/ioctl.c:840
__do_sys_ioctl fs/ioctl.c:904 [inline]
__se_sys_ioctl+0x80/0x170 fs/ioctl.c:892
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
other info that might help us debug this:
Chain exists of:
&mm->mmap_lock --> mapping.invalidate_lock#5 --> &ni->ni_lock#3/5
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&ni->ni_lock#3/5);
lock(mapping.invalidate_lock#5);
lock(&ni->ni_lock#3/5);
rlock(&mm->mmap_lock);
*** DEADLOCK ***
1 lock held by syz.8.441/9795:
#0: ffff88805b600fb0 (&ni->ni_lock#3/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1111 [inline]
#0: ffff88805b600fb0 (&ni->ni_lock#3/5){+.+.}-{4:4}, at: ntfs_fiemap+0xff/0x180 fs/ntfs3/file.c:1358
stack backtrace:
CPU: 1 UID: 0 PID: 9795 Comm: syz.8.441 Not tainted 6.14.0-rc6-syzkaller-00022-gb7f94fcf5546 #0
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+0x13a/0x1b0 kernel/locking/lockdep.c:2076
check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2208
check_prev_add kernel/locking/lockdep.c:3163 [inline]
check_prevs_add kernel/locking/lockdep.c:3282 [inline]
validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3906
__lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
__might_fault+0xc6/0x120 mm/memory.c:6858
_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+0x235/0x420 fs/ioctl.c:145
ni_fiemap+0x970/0x1270 fs/ntfs3/frecord.c:2042
ntfs_fiemap+0x132/0x180 fs/ntfs3/file.c:1360
ioctl_fiemap fs/ioctl.c:220 [inline]
do_vfs_ioctl+0x1981/0x2770 fs/ioctl.c:840
__do_sys_ioctl fs/ioctl.c:904 [inline]
__se_sys_ioctl+0x80/0x170 fs/ioctl.c:892
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdac818d169
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:00007fdac7ff9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fdac83a5fa0 RCX: 00007fdac818d169
RDX: 00004000000000c0 RSI: 00000000c020660b RDI: 0000000000000004
RBP: 00007fdac820e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fdac83a5fa0 R15: 00007ffe3d55d758
</TASK>