forked to background, child pid 3915 [ 37.910351][ T3916] 8021q: adding VLAN 0 to HW filter on device bond0 [ 37.927379][ T3916] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: [ 38.339974][ T3993] sshd (3993) used greatest stack depth: 19472 bytes left OK syzkaller Warning: Permanently added '10.128.0.206' (ED25519) to the list of known hosts. executing program syzkaller login: [ 60.587721][ T4244] [ 60.590228][ T4244] ============================= [ 60.595058][ T4244] WARNING: suspicious RCU usage [ 60.599932][ T4244] 6.1.129-syzkaller #0 Not tainted [ 60.605040][ T4244] ----------------------------- [ 60.609925][ T4244] kernel/events/callchain.c:161 suspicious rcu_dereference_check() usage! [ 60.618447][ T4244] [ 60.618447][ T4244] other info that might help us debug this: [ 60.618447][ T4244] [ 60.628694][ T4244] [ 60.628694][ T4244] rcu_scheduler_active = 2, debug_locks = 1 [ 60.636781][ T4244] 1 lock held by syz-executor189/4244: [ 60.642293][ T4244] #0: ffffffff8d32ef40 (rcu_read_lock_trace){....}-{0:0}, at: rcu_read_lock_trace+0x37/0x70 [ 60.652567][ T4244] [ 60.652567][ T4244] stack backtrace: [ 60.658465][ T4244] CPU: 0 PID: 4244 Comm: syz-executor189 Not tainted 6.1.129-syzkaller #0 [ 60.666965][ T4244] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 60.677023][ T4244] Call Trace: [ 60.680298][ T4244] [ 60.683221][ T4244] dump_stack_lvl+0x1e3/0x2cb [ 60.687904][ T4244] ? nf_tcp_handle_invalid+0x647/0x647 [ 60.693364][ T4244] ? panic+0x764/0x764 [ 60.697431][ T4244] ? __lock_acquire+0x125b/0x1f80 [ 60.702461][ T4244] lockdep_rcu_suspicious+0x21c/0x330 [ 60.707836][ T4244] get_callchain_entry+0x2ac/0x3c0 [ 60.712944][ T4244] get_perf_callchain+0xe6/0x810 [ 60.717878][ T4244] ? put_callchain_entry+0xb0/0xb0 [ 60.723005][ T4244] ? __lock_acquire+0x125b/0x1f80 [ 60.728047][ T4244] __bpf_get_stack+0x3da/0x590 [ 60.732821][ T4244] ? stack_map_get_build_id_offset+0x9c0/0x9c0 [ 60.738982][ T4244] ? __cant_sleep+0x270/0x270 [ 60.743675][ T4244] bpf_get_stack_raw_tp+0x1b2/0x220 [ 60.748873][ T4244] bpf_prog_0f38b8827da495ce+0x3a/0x3e [ 60.754332][ T4244] bpf_prog_run_pin_on_cpu+0x62/0x130 [ 60.759707][ T4244] bpf_prog_test_run_syscall+0x312/0x4d0 [ 60.765340][ T4244] ? sock_gen_cookie+0x60/0x60 [ 60.770106][ T4244] ? __fdget+0x14e/0x210 [ 60.774343][ T4244] ? sock_gen_cookie+0x60/0x60 [ 60.779105][ T4244] bpf_prog_test_run+0x32f/0x3a0 [ 60.784036][ T4244] __sys_bpf+0x3eb/0x6c0 [ 60.788269][ T4244] ? bpf_link_show_fdinfo+0x300/0x300 [ 60.793640][ T4244] ? print_irqtrace_events+0x210/0x210 [ 60.799095][ T4244] ? print_irqtrace_events+0x210/0x210 [ 60.804554][ T4244] ? syscall_enter_from_user_mode+0x2e/0x230 [ 60.810528][ T4244] ? lockdep_hardirqs_on+0x94/0x130 [ 60.815726][ T4244] __x64_sys_bpf+0x78/0x90 [ 60.820144][ T4244] do_syscall_64+0x3b/0xb0 [ 60.824556][ T4244] ? clear_bhb_loop+0x45/0xa0 [ 60.829227][ T4244] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 60.835112][ T4244] RIP: 0033:0x7f12c7583e39 [ 60.839515][ T4244] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 [ 60.859136][ T4244] RSP: 002b:00007ffe8aa9ab28 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 60.867539][ T4244] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f12c7583e39 [ 60.875521][ T4244] RDX: 000000000000000c RSI: 00004000000004c0 RDI: 000000000000000a executing program executing program executing program [ 60.883482][ T4244] RBP: 0000000000000000 R08: 00000000000000a0 R09: 00000000000000a0 [ 60.891441][ T4244] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 60.899398][ T4244] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 60.907367][ T4244] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program