no interfaces have a carrier [ 49.068677][ T3918] 8021q: adding VLAN 0 to HW filter on device bond0 [ 49.093799][ T3918] eql: remember to turn off Van-Jacobson compression on your slave devices Starting crond: OK Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.46' (ED25519) to the list of known hosts. executing program syzkaller login: [ 75.503856][ T4247] [ 75.506282][ T4247] ============================= [ 75.511126][ T4247] WARNING: suspicious RCU usage [ 75.516062][ T4247] 6.1.141-syzkaller #0 Not tainted [ 75.521188][ T4247] ----------------------------- [ 75.527125][ T4247] kernel/events/callchain.c:161 suspicious rcu_dereference_check() usage! [ 75.535698][ T4247] [ 75.535698][ T4247] other info that might help us debug this: [ 75.535698][ T4247] [ 75.545973][ T4247] [ 75.545973][ T4247] rcu_scheduler_active = 2, debug_locks = 1 [ 75.554079][ T4247] 1 lock held by syz-executor406/4247: [ 75.559551][ T4247] #0: ffffffff8c92ac20 (rcu_read_lock_trace){....}-{0:0}, at: rcu_read_lock_trace+0x37/0x70 [ 75.569829][ T4247] [ 75.569829][ T4247] stack backtrace: [ 75.575764][ T4247] CPU: 1 PID: 4247 Comm: syz-executor406 Not tainted 6.1.141-syzkaller #0 [ 75.584263][ T4247] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 75.594328][ T4247] Call Trace: [ 75.597630][ T4247] [ 75.600567][ T4247] dump_stack_lvl+0x168/0x22e [ 75.605255][ T4247] ? show_regs_print_info+0x12/0x12 [ 75.610460][ T4247] ? load_image+0x3b0/0x3b0 [ 75.614975][ T4247] lockdep_rcu_suspicious+0x1dd/0x300 [ 75.620387][ T4247] get_callchain_entry+0x2a5/0x3b0 [ 75.625511][ T4247] get_perf_callchain+0x9f/0x480 [ 75.630467][ T4247] ? put_callchain_entry+0xb0/0xb0 [ 75.635591][ T4247] ? __lock_acquire+0x7c50/0x7c50 [ 75.640626][ T4247] ? verify_lock_unused+0x140/0x140 [ 75.645834][ T4247] __bpf_get_stack+0x2ce/0x4f0 [ 75.650608][ T4247] ? stack_map_get_build_id_offset+0x9c0/0x9c0 [ 75.656772][ T4247] ? __cant_sleep+0x210/0x210 [ 75.661459][ T4247] ? bpf_prog_b8a90dd1efcc4ad9+0x3d/0x41 [ 75.667103][ T4247] bpf_get_stack_raw_tp+0x175/0x1d0 [ 75.672323][ T4247] bpf_prog_b8a90dd1efcc4ad9+0x3d/0x41 [ 75.677796][ T4247] bpf_prog_run_pin_on_cpu+0x63/0x140 [ 75.683181][ T4247] bpf_prog_test_run_syscall+0x30d/0x490 [ 75.688821][ T4247] ? sock_gen_cookie+0x60/0x60 [ 75.693591][ T4247] ? __fdget+0x146/0x200 [ 75.697846][ T4247] ? sock_gen_cookie+0x60/0x60 [ 75.702617][ T4247] bpf_prog_test_run+0x31e/0x390 [ 75.707575][ T4247] __sys_bpf+0x593/0x6d0 [ 75.711878][ T4247] ? bpf_link_show_fdinfo+0x310/0x310 [ 75.717281][ T4247] ? lock_chain_count+0x20/0x20 [ 75.722140][ T4247] __x64_sys_bpf+0x78/0x90 [ 75.726584][ T4247] do_syscall_64+0x4c/0xa0 [ 75.731010][ T4247] ? clear_bhb_loop+0x60/0xb0 [ 75.735693][ T4247] ? clear_bhb_loop+0x60/0xb0 [ 75.740369][ T4247] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 75.746269][ T4247] RIP: 0033:0x7fa61eea0629 [ 75.750685][ T4247] 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 [ 75.770391][ T4247] RSP: 002b:00007ffdcabcb088 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 75.778902][ T4247] RAX: ffffffffffffffda RBX: 0000200000000440 RCX: 00007fa61eea0629 [ 75.786883][ T4247] RDX: 000000000000000c RSI: 00002000000004c0 RDI: 000000000000000a [ 75.794855][ T4247] RBP: 00002000000000c0 R08: 0000000000000000 R09: 0000000000000000 [ 75.802825][ T4247] R10: 0