Warning: Permanently added '10.128.0.41' (ED25519) to the list of known hosts. executing program [ 52.105701][ T3541] [ 52.108094][ T3541] ============================= [ 52.112974][ T3541] WARNING: suspicious RCU usage [ 52.117805][ T3541] 6.1.87-syzkaller #0 Not tainted [ 52.122893][ T3541] ----------------------------- [ 52.127716][ T3541] kernel/events/callchain.c:161 suspicious rcu_dereference_check() usage! [ 52.136248][ T3541] [ 52.136248][ T3541] other info that might help us debug this: [ 52.136248][ T3541] [ 52.146513][ T3541] [ 52.146513][ T3541] rcu_scheduler_active = 2, debug_locks = 1 [ 52.154617][ T3541] 1 lock held by syz-executor694/3541: [ 52.160186][ T3541] #0: ffffffff8d12b540 (rcu_read_lock_trace){....}-{0:0}, at: rcu_read_lock_trace+0x37/0x70 [ 52.170522][ T3541] [ 52.170522][ T3541] stack backtrace: [ 52.176493][ T3541] CPU: 0 PID: 3541 Comm: syz-executor694 Not tainted 6.1.87-syzkaller #0 [ 52.184918][ T3541] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 52.194968][ T3541] Call Trace: [ 52.198240][ T3541] [ 52.201174][ T3541] dump_stack_lvl+0x1e3/0x2cb [ 52.205869][ T3541] ? nf_tcp_handle_invalid+0x642/0x642 [ 52.211343][ T3541] ? panic+0x764/0x764 [ 52.215417][ T3541] lockdep_rcu_suspicious+0x21c/0x330 [ 52.220794][ T3541] get_callchain_entry+0x2ac/0x3c0 [ 52.225906][ T3541] get_perf_callchain+0xe6/0x810 [ 52.230842][ T3541] ? put_callchain_entry+0xb0/0xb0 [ 52.235940][ T3541] ? __lock_acquire+0x125b/0x1f80 [ 52.240964][ T3541] __bpf_get_stack+0x378/0x570 [ 52.245724][ T3541] ? stack_map_get_build_id_offset+0x9c0/0x9c0 [ 52.251868][ T3541] ? __cant_sleep+0x270/0x270 [ 52.256536][ T3541] bpf_get_stack_raw_tp+0x1b2/0x220 [ 52.261725][ T3541] bpf_prog_b8a90dd1efcc4ad9+0x3d/0x41 [ 52.267176][ T3541] bpf_prog_run_pin_on_cpu+0x62/0x130 [ 52.272544][ T3541] bpf_prog_test_run_syscall+0x312/0x4d0 [ 52.278175][ T3541] ? sock_gen_cookie+0x60/0x60 [ 52.282930][ T3541] ? __fdget+0x14e/0x210 [ 52.287160][ T3541] ? sock_gen_cookie+0x60/0x60 [ 52.292019][ T3541] bpf_prog_test_run+0x32f/0x3a0 [ 52.296968][ T3541] __sys_bpf+0x3eb/0x6c0 [ 52.301212][ T3541] ? bpf_link_show_fdinfo+0x2d0/0x2d0 [ 52.306591][ T3541] ? print_irqtrace_events+0x210/0x210 [ 52.312048][ T3541] ? print_irqtrace_events+0x210/0x210 [ 52.317509][ T3541] ? syscall_enter_from_user_mode+0x2e/0x230 [ 52.323476][ T3541] ? lockdep_hardirqs_on+0x94/0x130 [ 52.328663][ T3541] __x64_sys_bpf+0x78/0x90 [ 52.333077][ T3541] do_syscall_64+0x3b/0xb0 [ 52.337484][ T3541] ? clear_bhb_loop+0x45/0xa0 [ 52.342151][ T3541] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 52.348037][ T3541] RIP: 0033:0x7fdcd878d669 [ 52.352441][ T3541] Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 52.372036][ T3541] RSP: 002b:00007ffc652e2d48 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 52.380438][ T3541] RAX: ffffffffffffffda RBX: 00007ffc652e2f18 RCX: 00007fdcd878d669 [ 52.388396][ T3541] RDX: 000000000000000c RSI: 00000000200004c0 RDI: 000000000000000a [ 52.396355][ T3541] RBP: 00007fdcd8800610 R08: 00007ffc652e2f18 R09: 00007ffc652e2f18 [ 52.404348][ T3541] R10: 00007