Warning: Permanently added '10.128.0.185' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 352.290377][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 352.297339][ C1] rcu: 1-....: (10500 ticks this GP) idle=dee/1/0x4000000000000002 softirq=16522/16522 fqs=5250 [ 352.308364][ C1] (t=10502 jiffies g=9577 q=109) [ 352.313429][ C1] NMI backtrace for cpu 1 [ 352.317773][ C1] CPU: 1 PID: 10037 Comm: syz-executor505 Not tainted 5.5.0-rc7-syzkaller #0 [ 352.326628][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 352.336764][ C1] Call Trace: [ 352.340052][ C1] [ 352.343064][ C1] dump_stack+0x197/0x210 [ 352.348109][ C1] nmi_cpu_backtrace.cold+0x70/0xb2 [ 352.353394][ C1] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 352.359189][ C1] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 352.365263][ C1] arch_trigger_cpumask_backtrace+0x14/0x20 [ 352.371259][ C1] rcu_dump_cpu_stacks+0x183/0x1cf [ 352.376443][ C1] ? find_next_bit+0x107/0x130 [ 352.381224][ C1] rcu_sched_clock_irq.cold+0x509/0xc0d [ 352.386869][ C1] ? raise_softirq+0x138/0x340 [ 352.391704][ C1] update_process_times+0x2d/0x70 [ 352.396803][ C1] tick_sched_handle+0xa2/0x190 [ 352.402621][ C1] tick_sched_timer+0x53/0x140 [ 352.407526][ C1] __hrtimer_run_queues+0x364/0xe40 [ 352.412970][ C1] ? tick_sched_do_timer+0x1b0/0x1b0 [ 352.418304][ C1] ? hrtimer_init+0x330/0x330 [ 352.423049][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 352.428946][ C1] ? ktime_get_update_offsets_now+0x2ce/0x430 [ 352.435320][ C1] hrtimer_interrupt+0x314/0x770 [ 352.440401][ C1] smp_apic_timer_interrupt+0x160/0x610 [ 352.446038][ C1] apic_timer_interrupt+0xf/0x20 [ 352.451138][ C1] [ 352.454232][ C1] RIP: 0010:lock_is_held_type+0xb3/0x320 [ 352.459911][ C1] Code: 0f 84 0a 02 00 00 9c 58 0f 1f 44 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 45 c0 48 c7 c0 a0 33 93 89 48 c1 e8 03 80 3c 10 00 <0f> 85 42 02 00 00 48 83 3d 4f 02 39 08 00 0f 84 d4 01 00 00 fa 66 [ 352.479734][ C1] RSP: 0018:ffffc9000204eeb8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 352.488344][ C1] RAX: 1ffffffff1326674 RBX: ffff8880a11c6100 RCX: ffffffff86767ccb [ 352.496417][ C1] RDX: dffffc0000000000 RSI: 00000000ffffffff RDI: ffff88808f906c94 [ 352.504396][ C1] RBP: ffffc9000204ef00 R08: ffff88808f906400 R09: ffffc9000204ef28 [ 352.512406][ C1] R10: fffff52000409de7 R11: ffffc9000204ef3f R12: ffff88808f906400 [ 352.520625][ C1] R13: 00000000bfffffff R14: ffff8880a6bd9a38 R15: ffffc9000204f030 [ 352.528690][ C1] ? hash_ip4_del+0xab/0xce0 [ 352.533488][ C1] hash_ip4_del+0xa3a/0xce0 [ 352.538006][ C1] hash_ip4_uadt+0x546/0x7a0 [ 352.542654][ C1] ? hash_ip6_del+0xe70/0xe70 [ 352.547399][ C1] ? hash_ip6_uadt+0x670/0x670 [ 352.552199][ C1] ? __kasan_check_write+0x14/0x20 [ 352.557467][ C1] call_ad+0x1a0/0x5a0 [ 352.561647][ C1] ? start_msg+0x220/0x220 [ 352.566147][ C1] ? nla_memcpy+0xb0/0xb0 [ 352.570488][ C1] ? __nla_parse+0x43/0x60 [ 352.574903][ C1] ip_set_ad.isra.0+0x572/0xb20 [ 352.579756][ C1] ? ip_set_nfnl_get_byindex+0x460/0x460 [ 352.585403][ C1] ? nla_memcpy+0xb0/0xb0 [ 352.589721][ C1] ? lock_downgrade+0x920/0x920 [ 352.594577][ C1] ip_set_udel+0x3a/0x50 [ 352.598825][ C1] ? ip_set_ad.isra.0+0xb20/0xb20 [ 352.603970][ C1] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 352.608903][ C1] ? nfnetlink_bind+0x2c0/0x2c0 [ 352.613759][ C1] ? __kasan_check_read+0x11/0x20 [ 352.618783][ C1] ? __lock_acquire+0x8a0/0x4a00 [ 352.623733][ C1] ? save_stack+0x5c/0x90 [ 352.628049][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 352.634518][ C1] ? apparmor_capable+0x497/0x900 [ 352.639680][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 352.645942][ C1] ? __kasan_check_read+0x11/0x20 [ 352.650964][ C1] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 352.656614][ C1] netlink_rcv_skb+0x177/0x450 [ 352.661478][ C1] ? nfnetlink_bind+0x2c0/0x2c0 [ 352.666348][ C1] ? netlink_ack+0xb50/0xb50 [ 352.670954][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 352.677201][ C1] ? ns_capable_common+0x93/0x100 [ 352.682235][ C1] ? ns_capable+0x20/0x30 [ 352.686606][ C1] ? __netlink_ns_capable+0x104/0x140 [ 352.691985][ C1] nfnetlink_rcv+0x1ba/0x460 [ 352.696729][ C1] ? nfnetlink_rcv_batch+0x17b0/0x17b0 [ 352.702187][ C1] ? netlink_deliver_tap+0x24a/0xbe0 [ 352.707478][ C1] ? __kasan_check_write+0x14/0x20 [ 352.712629][ C1] netlink_unicast+0x58c/0x7d0 [ 352.717378][ C1] ? netlink_attachskb+0x870/0x870 [ 352.722487][ C1] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 352.728286][ C1] ? __check_object_size+0x3d/0x437 [ 352.733584][ C1] netlink_sendmsg+0x91c/0xea0 [ 352.738358][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 352.743332][ C1] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 352.748880][ C1] ? apparmor_socket_sendmsg+0x2a/0x30 [ 352.754393][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 352.760755][ C1] ? security_socket_sendmsg+0x8d/0xc0 [ 352.766222][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 352.771219][ C1] sock_sendmsg+0xd7/0x130 [ 352.775632][ C1] ____sys_sendmsg+0x753/0x880 [ 352.780397][ C1] ? kernel_sendmsg+0x50/0x50 [ 352.785070][ C1] ? lockdep_init_map+0x1be/0x6d0 [ 352.790274][ C1] ___sys_sendmsg+0x100/0x170 [ 352.794951][ C1] ? sendmsg_copy_msghdr+0x70/0x70 [ 352.800059][ C1] ? __kasan_check_read+0x11/0x20 [ 352.805126][ C1] ? __lock_acquire+0x8a0/0x4a00 [ 352.810334][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 352.816650][ C1] ? __this_cpu_preempt_check+0x35/0x190 [ 352.822296][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 352.828554][ C1] ? percpu_counter_add_batch+0x13c/0x190 [ 352.834309][ C1] ? __fd_install+0x1bc/0x640 [ 352.839031][ C1] ? find_held_lock+0x35/0x130 [ 352.843802][ C1] ? __fd_install+0x1bc/0x640 [ 352.848523][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 352.854770][ C1] ? __fget_light+0x1a9/0x230 [ 352.859438][ C1] ? __fdget+0x1b/0x20 [ 352.863499][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 352.869833][ C1] __sys_sendmsg+0x105/0x1d0 [ 352.874442][ C1] ? __sys_sendmsg_sock+0xc0/0xc0 [ 352.879496][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 352.885053][ C1] ? do_syscall_64+0x26/0x790 [ 352.889717][ C1] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 352.895947][ C1] ? do_syscall_64+0x26/0x790 [ 352.900625][ C1] __x64_sys_sendmsg+0x78/0xb0 [ 352.905394][ C1] do_syscall_64+0xfa/0x790 [ 352.910023][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 352.916875][ C1] RIP: 0033:0x440509 [ 352.920846][ C1] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 352.940883][ C1] RSP: 002b:00007fff17b4c978 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 352.949322][ C1] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440509 [ 352.957302][ C1] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000004 [ 352.965277][ C1] RBP: 00000000006ca018 R08: 0000000000000018 R09: 00000000004002c8 [ 352.973264][ C1] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000401d90 [ 352.981347][ C1] R13: 0000000000401e20 R14: 0000000000000000 R15: 0000000000000000