BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 9513 Comm: syz.4.1424 Not tainted 5.15.186-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call trace:
 dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3735 [inline]
 validate_chain kernel/locking/lockdep.c:3756 [inline]
 __lock_acquire+0x1b30/0x651c kernel/locking/lockdep.c:5012
 lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0xb0/0x10c kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:363 [inline]
 d_alloc fs/dcache.c:1831 [inline]
 d_alloc_parallel+0xa8/0x1104 fs/dcache.c:2582
 __lookup_slow+0x104/0x380 fs/namei.c:1648
 lookup_slow+0x5c/0x80 fs/namei.c:1680
 walk_component+0x2b0/0x3a8 fs/namei.c:1976
 link_path_walk+0x590/0xb8c fs/namei.c:-1
 path_lookupat+0x90/0x3d0 fs/namei.c:2454
 filename_lookup+0x180/0x414 fs/namei.c:2484
 kern_path+0x4c/0x190 fs/namei.c:2582
 tomoyo_realpath_nofollow+0x94/0x124 security/tomoyo/realpath.c:308
 tomoyo_find_next_domain+0x1f0/0x1628 security/tomoyo/domain.c:726
 tomoyo_bprm_check_security+0xdc/0x130 security/tomoyo/tomoyo.c:101
 security_bprm_check+0x6c/0xa8 security/security.c:868
 search_binary_handler fs/exec.c:1730 [inline]
 exec_binprm fs/exec.c:1783 [inline]
 bprm_execve+0x764/0x1508 fs/exec.c:1852
 do_execveat_common+0x648/0x7dc fs/exec.c:1957
 do_execveat fs/exec.c:2038 [inline]
 __do_sys_execveat fs/exec.c:2112 [inline]
 __se_sys_execveat fs/exec.c:2106 [inline]
 __arm64_sys_execveat+0xd0/0xec fs/exec.c:2106
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584