======================================================
WARNING: possible circular locking dependency detected
5.19.0-syzkaller #0 Not tainted
------------------------------------------------------
kswapd1/129 is trying to acquire lock:
ffff888044648990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xfb4/0x14a0 fs/jbd2/transaction.c:461
but task is already holding lock:
ffffffff8beb9500 (fs_reclaim){+.+.}-{0:0}, at: try_to_freeze_unsafe include/linux/freezer.h:58 [inline]
ffffffff8beb9500 (fs_reclaim){+.+.}-{0:0}, at: try_to_freeze include/linux/freezer.h:67 [inline]
ffffffff8beb9500 (fs_reclaim){+.+.}-{0:0}, at: balance_pgdat+0xd1e/0x1570 mm/vmscan.c:4229
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:4593 [inline]
fs_reclaim_acquire+0x115/0x160 mm/page_alloc.c:4607
might_alloc include/linux/sched/mm.h:271 [inline]
slab_pre_alloc_hook mm/slab.h:723 [inline]
slab_alloc_node mm/slab.c:3200 [inline]
kmem_cache_alloc_node_trace+0x48/0x5b0 mm/slab.c:3611
kmalloc_node include/linux/slab.h:618 [inline]
kzalloc_node include/linux/slab.h:744 [inline]
mempool_create_node mm/mempool.c:266 [inline]
mempool_create+0x4e/0xc0 mm/mempool.c:255
mempool_create_page_pool include/linux/mempool.h:107 [inline]
fscrypt_initialize+0x86/0xa0 fs/crypto/crypto.c:330
fscrypt_setup_encryption_info+0xef/0xe90 fs/crypto/keysetup.c:531
fscrypt_get_encryption_info+0x34a/0x3f0 fs/crypto/keysetup.c:640
fscrypt_setup_filename+0x238/0xec0 fs/crypto/fname.c:433
__fscrypt_prepare_lookup+0x28/0xf0 fs/crypto/hooks.c:102
fscrypt_prepare_lookup include/linux/fscrypt.h:947 [inline]
ext4_fname_prepare_lookup+0x1ba/0x200 fs/ext4/crypto.c:46
ext4_lookup_entry fs/ext4/namei.c:1717 [inline]
ext4_lookup fs/ext4/namei.c:1792 [inline]
ext4_lookup+0x12d/0x700 fs/ext4/namei.c:1783
__lookup_hash+0x117/0x180 fs/namei.c:1602
do_rmdir+0x22c/0x430 fs/namei.c:4110
__do_sys_rmdir fs/namei.c:4141 [inline]
__se_sys_rmdir fs/namei.c:4139 [inline]
__x64_sys_rmdir+0xc6/0x110 fs/namei.c:4139
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #1 (fscrypt_init_mutex){+.+.}-{3:3}:
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
__mutex_lock+0x12f/0x1350 kernel/locking/mutex.c:747
fscrypt_initialize+0x3c/0xa0 fs/crypto/crypto.c:324
fscrypt_setup_encryption_info+0xef/0xe90 fs/crypto/keysetup.c:531
fscrypt_get_encryption_info+0x34a/0x3f0 fs/crypto/keysetup.c:640
fscrypt_setup_filename+0x238/0xec0 fs/crypto/fname.c:433
ext4_fname_setup_filename+0x88/0x110 fs/ext4/crypto.c:28
ext4_add_entry+0x3aa/0xe30 fs/ext4/namei.c:2344
ext4_rename+0x190a/0x2650 fs/ext4/namei.c:3864
ext4_rename2+0x1c2/0x270 fs/ext4/namei.c:4144
vfs_rename+0xef2/0x17a0 fs/namei.c:4719
do_renameat2+0xb5e/0xc80 fs/namei.c:4870
__do_sys_renameat2 fs/namei.c:4903 [inline]
__se_sys_renameat2 fs/namei.c:4900 [inline]
__x64_sys_renameat2+0xe4/0x120 fs/namei.c:4900
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #0 (jbd2_handle){++++}-{0:0}:
check_prev_add kernel/locking/lockdep.c:3095 [inline]
check_prevs_add kernel/locking/lockdep.c:3214 [inline]
validate_chain kernel/locking/lockdep.c:3829 [inline]
__lock_acquire+0x2abe/0x5660 kernel/locking/lockdep.c:5053
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
start_this_handle+0xfe7/0x14a0 fs/jbd2/transaction.c:463
jbd2__journal_start+0x399/0x930 fs/jbd2/transaction.c:520
__ext4_journal_start_sb+0x3a8/0x4a0 fs/ext4/ext4_jbd2.c:105
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_dirty_inode+0x9d/0x110 fs/ext4/inode.c:5949
__mark_inode_dirty+0x495/0x1050 fs/fs-writeback.c:2381
mark_inode_dirty_sync include/linux/fs.h:2337 [inline]
iput.part.0+0x57/0x820 fs/inode.c:1767
iput+0x58/0x70 fs/inode.c:1760
dentry_unlink_inode+0x2b1/0x460 fs/dcache.c:401
__dentry_kill+0x3c0/0x640 fs/dcache.c:607
shrink_dentry_list+0x23c/0x800 fs/dcache.c:1201
prune_dcache_sb+0xe7/0x140 fs/dcache.c:1282
super_cache_scan+0x336/0x590 fs/super.c:104
do_shrink_slab+0x42d/0xbd0 mm/vmscan.c:770
shrink_slab+0x17c/0x6f0 mm/vmscan.c:930
shrink_node_memcgs mm/vmscan.c:3124 [inline]
shrink_node+0x8b3/0x1db0 mm/vmscan.c:3245
kswapd_shrink_node mm/vmscan.c:4024 [inline]
balance_pgdat+0x8ef/0x1570 mm/vmscan.c:4215
kswapd+0x7a5/0xf80 mm/vmscan.c:4475
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
other info that might help us debug this:
Chain exists of:
jbd2_handle --> fscrypt_init_mutex --> fs_reclaim
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(fs_reclaim);
lock(fscrypt_init_mutex);
lock(fs_reclaim);
lock(jbd2_handle);
*** DEADLOCK ***
3 locks held by kswapd1/129:
#0: ffffffff8beb9500 (fs_reclaim){+.+.}-{0:0}, at: try_to_freeze_unsafe include/linux/freezer.h:58 [inline]
#0: ffffffff8beb9500 (fs_reclaim){+.+.}-{0:0}, at: try_to_freeze include/linux/freezer.h:67 [inline]
#0: ffffffff8beb9500 (fs_reclaim){+.+.}-{0:0}, at: balance_pgdat+0xd1e/0x1570 mm/vmscan.c:4229
#1: ffffffff8be79270 (shrinker_rwsem){++++}-{3:3}, at: shrink_slab+0xc9/0x6f0 mm/vmscan.c:920
#2: ffff88801b30c0e0 (&type->s_umount_key#52){++++}-{3:3}, at: trylock_super fs/super.c:415 [inline]
#2: ffff88801b30c0e0 (&type->s_umount_key#52){++++}-{3:3}, at: super_cache_scan+0x6c/0x590 fs/super.c:79
stack backtrace:
CPU: 2 PID: 129 Comm: kswapd1 Not tainted 5.19.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
check_noncircular+0x25f/0x2e0 kernel/locking/lockdep.c:2175
check_prev_add kernel/locking/lockdep.c:3095 [inline]
check_prevs_add kernel/locking/lockdep.c:3214 [inline]
validate_chain kernel/locking/lockdep.c:3829 [inline]
__lock_acquire+0x2abe/0x5660 kernel/locking/lockdep.c:5053
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
start_this_handle+0xfe7/0x14a0 fs/jbd2/transaction.c:463
jbd2__journal_start+0x399/0x930 fs/jbd2/transaction.c:520
__ext4_journal_start_sb+0x3a8/0x4a0 fs/ext4/ext4_jbd2.c:105
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_dirty_inode+0x9d/0x110 fs/ext4/inode.c:5949
__mark_inode_dirty+0x495/0x1050 fs/fs-writeback.c:2381
mark_inode_dirty_sync include/linux/fs.h:2337 [inline]
iput.part.0+0x57/0x820 fs/inode.c:1767
iput+0x58/0x70 fs/inode.c:1760
dentry_unlink_inode+0x2b1/0x460 fs/dcache.c:401
__dentry_kill+0x3c0/0x640 fs/dcache.c:607
shrink_dentry_list+0x23c/0x800 fs/dcache.c:1201
prune_dcache_sb+0xe7/0x140 fs/dcache.c:1282
super_cache_scan+0x336/0x590 fs/super.c:104
do_shrink_slab+0x42d/0xbd0 mm/vmscan.c:770
shrink_slab+0x17c/0x6f0 mm/vmscan.c:930
shrink_node_memcgs mm/vmscan.c:3124 [inline]
shrink_node+0x8b3/0x1db0 mm/vmscan.c:3245
kswapd_shrink_node mm/vmscan.c:4024 [inline]
balance_pgdat+0x8ef/0x1570 mm/vmscan.c:4215
kswapd+0x7a5/0xf80 mm/vmscan.c:4475
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
</TASK>