Warning: Permanently added '10.128.10.9' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 273.651737][ T9662] Set syz2 is full, maxelem 65536 reached [ 378.660726][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 378.667448][ C1] rcu: 1-...!: (10500 ticks this GP) idle=446/1/0x4000000000000002 softirq=16148/16148 fqs=0 [ 378.677919][ C1] (t=10502 jiffies g=8925 q=349) [ 378.683040][ C1] rcu: rcu_preempt kthread starved for 10503 jiffies! g8925 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 [ 378.694301][ C1] rcu: RCU grace-period kthread stack dump: [ 378.700452][ C1] rcu_preempt I29264 10 2 0x80004000 [ 378.706771][ C1] Call Trace: [ 378.710134][ C1] __schedule+0x934/0x1f90 [ 378.714552][ C1] ? __sched_text_start+0x8/0x8 [ 378.719524][ C1] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 378.725328][ C1] ? schedule_timeout+0x47c/0xc50 [ 378.730418][ C1] ? lockdep_hardirqs_on+0x421/0x5e0 [ 378.735709][ C1] schedule+0xdc/0x2b0 [ 378.739868][ C1] schedule_timeout+0x486/0xc50 [ 378.745418][ C1] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 378.751381][ C1] ? usleep_range+0x170/0x170 [ 378.756241][ C1] ? trace_hardirqs_on+0x67/0x240 [ 378.761338][ C1] ? __next_timer_interrupt+0x1a0/0x1a0 [ 378.766895][ C1] ? swake_up_one+0x60/0x60 [ 378.771460][ C1] rcu_gp_kthread+0x9b2/0x18d0 [ 378.776225][ C1] ? rcu_barrier+0x350/0x350 [ 378.780828][ C1] ? trace_hardirqs_on+0x67/0x240 [ 378.785895][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 378.792313][ C1] ? __kthread_parkme+0x108/0x1c0 [ 378.797403][ C1] ? __kasan_check_read+0x11/0x20 [ 378.802422][ C1] kthread+0x361/0x430 [ 378.806554][ C1] ? rcu_barrier+0x350/0x350 [ 378.811152][ C1] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 378.816965][ C1] ret_from_fork+0x24/0x30 [ 378.821409][ C1] NMI backtrace for cpu 1 [ 378.825729][ C1] CPU: 1 PID: 9663 Comm: syz-executor067 Not tainted 5.5.0-rc6-syzkaller #0 [ 378.834380][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 378.845601][ C1] Call Trace: [ 378.848866][ C1] [ 378.851906][ C1] dump_stack+0x197/0x210 [ 378.856246][ C1] nmi_cpu_backtrace.cold+0x70/0xb2 [ 378.861517][ C1] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 378.867151][ C1] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 378.873127][ C1] arch_trigger_cpumask_backtrace+0x14/0x20 [ 378.879223][ C1] rcu_dump_cpu_stacks+0x183/0x1cf [ 378.884331][ C1] rcu_sched_clock_irq.cold+0x509/0xc0d [ 378.890076][ C1] ? raise_softirq+0x138/0x340 [ 378.894944][ C1] update_process_times+0x2d/0x70 [ 378.900221][ C1] tick_sched_handle+0xa2/0x190 [ 378.905081][ C1] tick_sched_timer+0x53/0x140 [ 378.909844][ C1] __hrtimer_run_queues+0x364/0xe40 [ 378.915062][ C1] ? tick_sched_do_timer+0x1b0/0x1b0 [ 378.920393][ C1] ? hrtimer_init+0x330/0x330 [ 378.925058][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 378.930783][ C1] ? ktime_get_update_offsets_now+0x2ce/0x430 [ 378.936853][ C1] hrtimer_interrupt+0x314/0x770 [ 378.942004][ C1] smp_apic_timer_interrupt+0x160/0x610 [ 378.947539][ C1] apic_timer_interrupt+0xf/0x20 [ 378.952456][ C1] [ 378.955501][ C1] RIP: 0010:hash_ip4_expire.isra.0+0x1ae/0x8d0 [ 378.961651][ C1] Code: 48 89 c8 48 89 4d b0 83 e1 07 48 c1 e8 03 42 0f b6 04 38 38 c8 7f 08 84 c0 0f 85 60 06 00 00 4c 8b 75 c0 31 ff 41 0f b6 5e 19 <89> de e8 9b 50 f9 fa 84 db 0f 84 db 04 00 00 e8 4e 4f f9 fa 49 8d [ 378.981260][ C1] RSP: 0018:ffffc900077c6e28 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 378.989676][ C1] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000001 [ 378.997797][ C1] RDX: 0000000000000000 RSI: ffffffff867bb040 RDI: 0000000000000000 [ 379.005793][ C1] RBP: ffffc900077c6ed8 R08: ffff888096af4440 R09: ffffed10144bfa03 [ 379.013760][ C1] R10: ffffed10144bfa02 R11: ffff8880a25fd017 R12: ffff8880a25fd050 [ 379.021742][ C1] R13: ffff8880a262e600 R14: ffff8880a7726f00 R15: dffffc0000000000 [ 379.029770][ C1] ? hash_ip4_expire.isra.0+0x180/0x8d0 [ 379.035332][ C1] ? hash_ip4_expire.isra.0+0x180/0x8d0 [ 379.040890][ C1] ? retint_kernel+0x2b/0x2b [ 379.045507][ C1] hash_ip4_add+0x178/0x1b6c [ 379.050121][ C1] hash_ip4_uadt+0x546/0x7a0 [ 379.054714][ C1] ? hash_ip6_add+0x1d70/0x1d70 [ 379.059564][ C1] ? hash_ip6_uadt+0x670/0x670 [ 379.064322][ C1] ? __kasan_check_write+0x14/0x20 [ 379.069477][ C1] call_ad+0x1a0/0x5a0 [ 379.073547][ C1] ? start_msg+0x220/0x220 [ 379.078029][ C1] ? nla_memcpy+0xb0/0xb0 [ 379.082377][ C1] ? __nla_parse+0x43/0x60 [ 379.086896][ C1] ip_set_ad.isra.0+0x572/0xb20 [ 379.091754][ C1] ? ip_set_nfnl_get_byindex+0x460/0x460 [ 379.097494][ C1] ? nla_memcpy+0xb0/0xb0 [ 379.102017][ C1] ? lock_downgrade+0x920/0x920 [ 379.106907][ C1] ip_set_uadd+0x37/0x50 [ 379.111165][ C1] ? ip_set_udel+0x50/0x50 [ 379.115639][ C1] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 379.120587][ C1] ? nfnetlink_bind+0x2c0/0x2c0 [ 379.125485][ C1] ? __kasan_check_read+0x11/0x20 [ 379.130547][ C1] ? __lock_acquire+0x8a0/0x4a00 [ 379.135483][ C1] ? save_stack+0x5c/0x90 [ 379.139830][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 379.146119][ C1] ? apparmor_capable+0x497/0x900 [ 379.151134][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 379.157377][ C1] ? __kasan_check_read+0x11/0x20 [ 379.162390][ C1] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 379.167851][ C1] netlink_rcv_skb+0x177/0x450 [ 379.172706][ C1] ? nfnetlink_bind+0x2c0/0x2c0 [ 379.177544][ C1] ? netlink_ack+0xb50/0xb50 [ 379.182217][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 379.188464][ C1] ? ns_capable_common+0x93/0x100 [ 379.193535][ C1] ? ns_capable+0x20/0x30 [ 379.197908][ C1] ? __netlink_ns_capable+0x104/0x140 [ 379.203281][ C1] nfnetlink_rcv+0x1ba/0x460 [ 379.207875][ C1] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 379.213322][ C1] ? netlink_deliver_tap+0x24a/0xbf0 [ 379.218611][ C1] ? __kasan_check_write+0x14/0x20 [ 379.223723][ C1] netlink_unicast+0x59e/0x7e0 [ 379.228538][ C1] ? netlink_attachskb+0x870/0x870 [ 379.233647][ C1] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 379.239403][ C1] ? __check_object_size+0x3d/0x437 [ 379.244591][ C1] netlink_sendmsg+0x91c/0xea0 [ 379.249358][ C1] ? netlink_unicast+0x7e0/0x7e0 [ 379.254284][ C1] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 379.259855][ C1] ? apparmor_socket_sendmsg+0x2a/0x30 [ 379.265440][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 379.271761][ C1] ? security_socket_sendmsg+0x8d/0xc0 [ 379.277213][ C1] ? netlink_unicast+0x7e0/0x7e0 [ 379.282338][ C1] sock_sendmsg+0xd7/0x130 [ 379.287121][ C1] ____sys_sendmsg+0x753/0x880 [ 379.292154][ C1] ? kernel_sendmsg+0x50/0x50 [ 379.296835][ C1] ? lockdep_init_map+0x1be/0x6d0 [ 379.301928][ C1] ___sys_sendmsg+0x100/0x170 [ 379.306612][ C1] ? sendmsg_copy_msghdr+0x70/0x70 [ 379.311723][ C1] ? __kasan_check_read+0x11/0x20 [ 379.316749][ C1] ? __lock_acquire+0x8a0/0x4a00 [ 379.321686][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 379.327976][ C1] ? __this_cpu_preempt_check+0x35/0x190 [ 379.333606][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 379.339839][ C1] ? percpu_counter_add_batch+0x13c/0x190 [ 379.345586][ C1] ? __fd_install+0x1bc/0x640 [ 379.350252][ C1] ? find_held_lock+0x35/0x130 [ 379.355014][ C1] ? __fd_install+0x1bc/0x640 [ 379.359695][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 379.365974][ C1] ? __fget_light+0x1a9/0x230 [ 379.370635][ C1] ? __fdget+0x1b/0x20 [ 379.374703][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 379.380950][ C1] __sys_sendmsg+0x105/0x1d0 [ 379.385566][ C1] ? __sys_sendmsg_sock+0xc0/0xc0 [ 379.390634][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 379.396208][ C1] ? do_syscall_64+0x26/0x790 [ 379.400883][ C1] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 379.406949][ C1] ? do_syscall_64+0x26/0x790 [ 379.411628][ C1] __x64_sys_sendmsg+0x78/0xb0 [ 379.416391][ C1] do_syscall_64+0xfa/0x790 [ 379.420884][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 379.426809][ C1] RIP: 0033:0x441579 [ 379.430718][ C1] Code: e8 fc ab 02 00 48 83 c4 18 c3 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 0f 83 9b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 379.450322][ C1] RSP: 002b:00007fff909b6a18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 379.458728][ C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441579 [ 379.466700][ C1] RDX: 0000000000000000 RSI: 0000000020000d00 RDI: 0000000000000004 [ 379.474689][ C1] RBP: 0000000000042996 R08: 00000000004002c8 R09: 00000000004002c8 [ 379.482670][ C1] R10: 00000000004002c8 R11: 0000000000000246 R12: 00000000004023a0 [ 379.490673][ C1] R13: 0000000000402430 R14: 0000000000000000 R15: 0000000000000000