======================================================
WARNING: possible circular locking dependency detected
6.6.0-rc3-syzkaller #0 Not tainted
------------------------------------------------------
kswapd0/79 is trying to acquire lock:
ffff8880a7dbaa40 (&rl->lock){++++}-{3:3}, at: __ntfs_clear_inode+0x24/0x260 fs/ntfs/inode.c:2189
but task is already holding lock:
ffffffff8cd15c00 (fs_reclaim){+.+.}-{0:0}, at: balance_pgdat+0x1b4/0x1b80 mm/vmscan.c:7409
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (fs_reclaim){+.+.}-{0:0}:
__fs_reclaim_acquire mm/page_alloc.c:3551 [inline]
fs_reclaim_acquire+0x100/0x150 mm/page_alloc.c:3565
might_alloc include/linux/sched/mm.h:303 [inline]
prepare_alloc_pages.constprop.0+0x155/0x550 mm/page_alloc.c:4197
__alloc_pages+0x14e/0x4a0 mm/page_alloc.c:4415
alloc_pages+0x1a9/0x270 mm/mempolicy.c:2298
folio_alloc+0x1e/0x60 mm/mempolicy.c:2308
filemap_alloc_folio+0x3bb/0x490 mm/filemap.c:976
do_read_cache_folio+0x1b8/0x540 mm/filemap.c:3706
do_read_cache_page mm/filemap.c:3808 [inline]
read_cache_page+0x5b/0x230 mm/filemap.c:3817
read_mapping_page include/linux/pagemap.h:860 [inline]
ntfs_map_page fs/ntfs/aops.h:75 [inline]
map_mft_record_page fs/ntfs/mft.c:73 [inline]
map_mft_record+0x1dd/0x730 fs/ntfs/mft.c:156
ntfs_read_locked_inode+0x19b/0x5860 fs/ntfs/inode.c:550
ntfs_iget+0x130/0x180 fs/ntfs/inode.c:177
ntfs_lookup+0x312/0xc30 fs/ntfs/namei.c:117
__lookup_slow+0x24d/0x450 fs/namei.c:1693
lookup_slow fs/namei.c:1710 [inline]
walk_component+0x349/0x5a0 fs/namei.c:2001
lookup_last fs/namei.c:2458 [inline]
path_lookupat+0x17f/0x770 fs/namei.c:2482
filename_lookup+0x1e7/0x5b0 fs/namei.c:2511
user_path_at_empty+0x42/0x60 fs/namei.c:2910
user_path_at include/linux/namei.h:57 [inline]
do_mount fs/namespace.c:3672 [inline]
__do_sys_mount fs/namespace.c:3884 [inline]
__se_sys_mount fs/namespace.c:3861 [inline]
__x64_sys_mount+0x1ff/0x310 fs/namespace.c:3861
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #1 (&ni->mrec_lock){+.+.}-{3:3}:
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
__mutex_lock+0x181/0x1340 kernel/locking/mutex.c:747
map_mft_record+0x4a/0x730 fs/ntfs/mft.c:154
ntfs_truncate+0x263/0x2a50 fs/ntfs/inode.c:2383
ntfs_truncate_vfs fs/ntfs/inode.c:2863 [inline]
ntfs_setattr+0x3dd/0x5b0 fs/ntfs/inode.c:2915
notify_change+0x742/0x11c0 fs/attr.c:499
do_truncate+0x15c/0x220 fs/open.c:66
handle_truncate fs/namei.c:3298 [inline]
do_open fs/namei.c:3643 [inline]
path_openat+0x23f1/0x29c0 fs/namei.c:3796
do_filp_open+0x1de/0x430 fs/namei.c:3823
do_sys_openat2+0x176/0x1e0 fs/open.c:1422
do_sys_open fs/open.c:1437 [inline]
__do_sys_creat fs/open.c:1513 [inline]
__se_sys_creat fs/open.c:1507 [inline]
__x64_sys_creat+0xcd/0x120 fs/open.c:1507
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #0 (&rl->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:3868 [inline]
__lock_acquire+0x2e3d/0x5de0 kernel/locking/lockdep.c:5136
lock_acquire kernel/locking/lockdep.c:5753 [inline]
lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5718
down_write+0x93/0x200 kernel/locking/rwsem.c:1573
__ntfs_clear_inode+0x24/0x260 fs/ntfs/inode.c:2189
ntfs_evict_big_inode+0x29e/0x530 fs/ntfs/inode.c:2278
evict+0x2ed/0x6b0 fs/inode.c:664
dispose_list+0x117/0x1e0 fs/inode.c:697
prune_icache_sb+0xeb/0x150 fs/inode.c:882
super_cache_scan+0x36b/0x540 fs/super.c:230
do_shrink_slab+0x422/0xaa0 mm/vmscan.c:900
shrink_slab_memcg mm/vmscan.c:969 [inline]
shrink_slab+0x48b/0x6e0 mm/vmscan.c:1048
shrink_one+0x4f7/0x700 mm/vmscan.c:5417
shrink_many mm/vmscan.c:5469 [inline]
lru_gen_shrink_node mm/vmscan.c:5586 [inline]
shrink_node+0x20d4/0x37a0 mm/vmscan.c:6526
kswapd_shrink_node mm/vmscan.c:7331 [inline]
balance_pgdat+0xa32/0x1b80 mm/vmscan.c:7521
kswapd+0x5be/0xbf0 mm/vmscan.c:7781
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
other info that might help us debug this:
Chain exists of:
&rl->lock --> &ni->mrec_lock --> fs_reclaim
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(fs_reclaim);
lock(&ni->mrec_lock);
lock(fs_reclaim);
lock(&rl->lock);
*** DEADLOCK ***
3 locks held by kswapd0/79:
#0: ffffffff8cd15c00 (fs_reclaim){+.+.}-{0:0}, at: balance_pgdat+0x1b4/0x1b80 mm/vmscan.c:7409
#1: ffffffff8ccc6e30 (shrinker_rwsem){++++}-{3:3}, at: shrink_slab_memcg mm/vmscan.c:942 [inline]
#1: ffffffff8ccc6e30 (shrinker_rwsem){++++}-{3:3}, at: shrink_slab+0x2b0/0x6e0 mm/vmscan.c:1048
#2: ffff88807cdde0e0 (&type->s_umount_key#56){++++}-{3:3}, at: super_trylock_shared fs/super.c:607 [inline]
#2: ffff88807cdde0e0 (&type->s_umount_key#56){++++}-{3:3}, at: super_cache_scan+0x74/0x540 fs/super.c:203
stack backtrace:
CPU: 1 PID: 79 Comm: kswapd0 Not tainted 6.6.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
check_noncircular+0x311/0x3f0 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+0x2e3d/0x5de0 kernel/locking/lockdep.c:5136
lock_acquire kernel/locking/lockdep.c:5753 [inline]
lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5718
down_write+0x93/0x200 kernel/locking/rwsem.c:1573
__ntfs_clear_inode+0x24/0x260 fs/ntfs/inode.c:2189
ntfs_evict_big_inode+0x29e/0x530 fs/ntfs/inode.c:2278
evict+0x2ed/0x6b0 fs/inode.c:664
dispose_list+0x117/0x1e0 fs/inode.c:697
prune_icache_sb+0xeb/0x150 fs/inode.c:882
super_cache_scan+0x36b/0x540 fs/super.c:230
do_shrink_slab+0x422/0xaa0 mm/vmscan.c:900
shrink_slab_memcg mm/vmscan.c:969 [inline]
shrink_slab+0x48b/0x6e0 mm/vmscan.c:1048
shrink_one+0x4f7/0x700 mm/vmscan.c:5417
shrink_many mm/vmscan.c:5469 [inline]
lru_gen_shrink_node mm/vmscan.c:5586 [inline]
shrink_node+0x20d4/0x37a0 mm/vmscan.c:6526
kswapd_shrink_node mm/vmscan.c:7331 [inline]
balance_pgdat+0xa32/0x1b80 mm/vmscan.c:7521
kswapd+0x5be/0xbf0 mm/vmscan.c:7781
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
</TASK>