BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 12125 Comm: syz.4.1299 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3855 [inline]
 validate_chain kernel/locking/lockdep.c:3876 [inline]
 __lock_acquire+0xfdc/0x2ebc kernel/locking/lockdep.c:5237
 lock_acquire+0x140/0x364 kernel/locking/lockdep.c:5868
 do_write_seqcount_begin_nested include/linux/seqlock.h:478 [inline]
 do_write_seqcount_begin include/linux/seqlock.h:504 [inline]
 psi_write_begin+0x1b4/0x320 kernel/sched/psi.c:183
 psi_account_irqtime+0x1c8/0x420 kernel/sched/psi.c:1030
 __schedule+0x1328/0x2db8 kernel/sched/core.c:7182
 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7370
 preempt_schedule+0x60/0x78 kernel/sched/core.c:7394
 __raw_spin_unlock include/linux/spinlock_api_smp.h:169 [inline]
 _raw_spin_unlock+0x74/0x78 kernel/locking/spinlock.c:190
 spin_unlock include/linux/spinlock.h:390 [inline]
 mtree_erase+0x104/0x164 lib/maple_tree.c:5924
 simple_offset_remove+0x5c/0x90 fs/libfs.c:333
 shmem_unlink+0xe8/0x1bc mm/shmem.c:3977
 vfs_unlink+0x208/0x574 fs/namei.c:5508
 ovl_do_unlink fs/overlayfs/overlayfs.h:224 [inline]
 ovl_cleanup_locked fs/overlayfs/dir.c:36 [inline]
 ovl_cleanup+0x124/0x238 fs/overlayfs/dir.c:54
 ovl_check_rename_whiteout fs/overlayfs/super.c:615 [inline]
 ovl_make_workdir fs/overlayfs/super.c:713 [inline]
 ovl_get_workdir+0x864/0x133c fs/overlayfs/super.c:836
 ovl_fill_super_creds fs/overlayfs/super.c:1449 [inline]
 ovl_fill_super+0x1fc0/0x31e0 fs/overlayfs/super.c:1560
 vfs_get_super+0xb8/0x148 fs/super.c:1327
 get_tree_nodev+0x2c/0x3c fs/super.c:1346
 ovl_get_tree+0x28/0x38 fs/overlayfs/params.c:730
 vfs_get_tree+0x90/0x28c fs/super.c:1754
 fc_mount+0x24/0xac fs/namespace.c:1193
 do_new_mount_fc fs/namespace.c:3758 [inline]
 do_new_mount+0x2a4/0x538 fs/namespace.c:3834
 path_mount+0x5f0/0xa88 fs/namespace.c:4154
 do_mount+0xe8/0x148 fs/namespace.c:4167
 __do_sys_mount fs/namespace.c:4383 [inline]
 __se_sys_mount fs/namespace.c:4360 [inline]
 __arm64_sys_mount+0x334/0x380 fs/namespace.c:4360
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594