BUG: MAX_STACK_TRACE_ENTRIES too low! turning off the locking correctness validator. CPU: 0 PID: 20796 Comm: syz-executor156 Not tainted 5.15.166-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 save_trace+0x88a/0xab0 kernel/locking/lockdep.c:547 mark_lock+0x1ca/0x340 kernel/locking/lockdep.c:4586 mark_usage kernel/locking/lockdep.c:4512 [inline] __lock_acquire+0xc97/0x1ff0 kernel/locking/lockdep.c:4966 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 htab_lock_bucket kernel/bpf/hashtab.c:183 [inline] htab_map_delete_elem+0x1bd/0x560 kernel/bpf/hashtab.c:1358 bpf_prog_2c29ac5cdc6b1842+0x3a/0x8ac bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline] bpf_trace_run3+0x1d1/0x380 kernel/trace/bpf_trace.c:1918 __bpf_trace_kmem_cache_free+0x99/0xc0 include/trace/events/kmem.h:138 trace_kmem_cache_free include/trace/events/kmem.h:138 [inline] kmem_cache_free+0x1ce/0x1f0 mm/slub.c:3516 anon_vma_free mm/rmap.c:133 [inline] __put_anon_vma+0x126/0x2d0 mm/rmap.c:2252 put_anon_vma include/linux/rmap.h:114 [inline] unlink_anon_vmas+0x48f/0x5f0 mm/rmap.c:440 free_pgtables+0x178/0x2a0 mm/memory.c:426 exit_mmap+0x3c5/0x670 mm/mmap.c:3187 __mmput+0x112/0x3b0 kernel/fork.c:1126 exit_mm+0x688/0x7f0 kernel/exit.c:550 do_exit+0x626/0x2480 kernel/exit.c:861 do_group_exit+0x144/0x310 kernel/exit.c:996 __do_sys_exit_group kernel/exit.c:1007 [inline] __se_sys_exit_group kernel/exit.c:1005 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1005 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f5b39e06fb9 Code: Unable to access opcode bytes at RIP 0x7f5b39e06f8f. RSP: 002b:00007ffd1a5a96f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5b39e06fb9 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 00007f5b39e822b0 R08: ffffffffffffffb8 R09: 00000000000000a0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5b39e822b0 R13: 0000000000000000 R14: 00007f5b39e82d20 R15: 00007f5b39dd8150