Warning: Permanently added '10.128.1.9' (ED25519) to the list of known hosts.
2026/04/21 03:02:20 parsed 1 programs
[ 224.364719][ T30] audit: type=1400 audit(1776740540.339:64): avc: denied { node_bind } for pid=280 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1
[ 224.385724][ T30] audit: type=1400 audit(1776740540.339:65): avc: denied { module_request } for pid=280 comm="syz-execprog" kmod="net-pf-2-proto-262-type-1" scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:kernel_t tclass=system permissive=1
[ 224.970467][ T30] audit: type=1400 audit(1776740540.939:66): avc: denied { mounton } for pid=287 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=2023 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1
[ 224.971570][ T287] cgroup: Unknown subsys name 'net'
[ 224.993152][ T30] audit: type=1400 audit(1776740540.939:67): avc: denied { mount } for pid=287 comm="syz-executor" name="/" dev="cgroup2" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1
[ 225.020539][ T30] audit: type=1400 audit(1776740540.969:68): avc: denied { unmount } for pid=287 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1
[ 225.020715][ T287] cgroup: Unknown subsys name 'devices'
[ 225.193510][ T287] cgroup: Unknown subsys name 'hugetlb'
[ 225.199125][ T287] cgroup: Unknown subsys name 'rlimit'
[ 225.401434][ T30] audit: type=1400 audit(1776740541.369:69): avc: denied { setattr } for pid=287 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=254 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1
[ 225.424788][ T30] audit: type=1400 audit(1776740541.379:70): avc: denied { create } for pid=287 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 225.445304][ T30] audit: type=1400 audit(1776740541.379:71): avc: denied { write } for pid=287 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 225.446352][ T290] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped).
[ 225.466013][ T30] audit: type=1400 audit(1776740541.379:72): avc: denied { read } for pid=287 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
Setting up swapspace version 1, size = 127995904 bytes
[ 225.494879][ T30] audit: type=1400 audit(1776740541.379:73): avc: denied { mounton } for pid=287 comm="syz-executor" path="/proc/sys/fs/binfmt_misc" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=dir permissive=1
[ 225.536035][ T287] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 225.960152][ T293] request_module fs-gadgetfs succeeded, but still no fs?
[ 226.184372][ T311] bridge0: port 1(bridge_slave_0) entered blocking state
[ 226.191408][ T311] bridge0: port 1(bridge_slave_0) entered disabled state
[ 226.199341][ T311] device bridge_slave_0 entered promiscuous mode
[ 226.206345][ T311] bridge0: port 2(bridge_slave_1) entered blocking state
[ 226.213399][ T311] bridge0: port 2(bridge_slave_1) entered disabled state
[ 226.220650][ T311] device bridge_slave_1 entered promiscuous mode
[ 226.253993][ T311] bridge0: port 2(bridge_slave_1) entered blocking state
[ 226.261024][ T311] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 226.268376][ T311] bridge0: port 1(bridge_slave_0) entered blocking state
[ 226.275540][ T311] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 226.291507][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 226.299310][ T45] bridge0: port 1(bridge_slave_0) entered disabled state
[ 226.307015][ T45] bridge0: port 2(bridge_slave_1) entered disabled state
[ 226.316065][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 226.324306][ T45] bridge0: port 1(bridge_slave_0) entered blocking state
[ 226.331372][ T45] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 226.340584][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 226.348923][ T317] bridge0: port 2(bridge_slave_1) entered blocking state
[ 226.355969][ T317] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 226.368239][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 226.377350][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 226.389742][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 226.400715][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 226.408740][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 226.416271][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 226.425212][ T311] device veth0_vlan entered promiscuous mode
[ 226.434543][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 226.443626][ T311] device veth1_macvtap entered promiscuous mode
[ 226.452381][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 226.463626][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
2026/04/21 03:02:22 executed programs: 0
[ 227.046082][ T356] bridge0: port 1(bridge_slave_0) entered blocking state
[ 227.053262][ T356] bridge0: port 1(bridge_slave_0) entered disabled state
[ 227.060542][ T356] device bridge_slave_0 entered promiscuous mode
[ 227.070984][ T356] bridge0: port 2(bridge_slave_1) entered blocking state
[ 227.078072][ T356] bridge0: port 2(bridge_slave_1) entered disabled state
[ 227.085506][ T356] device bridge_slave_1 entered promiscuous mode
[ 227.122513][ T356] bridge0: port 2(bridge_slave_1) entered blocking state
[ 227.129682][ T356] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 227.136997][ T356] bridge0: port 1(bridge_slave_0) entered blocking state
[ 227.144043][ T356] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 227.163415][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 227.170978][ T8] bridge0: port 1(bridge_slave_0) entered disabled state
[ 227.178434][ T8] bridge0: port 2(bridge_slave_1) entered disabled state
[ 227.187000][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[ 227.195341][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 227.203491][ T8] bridge0: port 1(bridge_slave_0) entered blocking state
[ 227.210491][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 227.219251][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
[ 227.228189][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 227.236335][ T8] bridge0: port 2(bridge_slave_1) entered blocking state
[ 227.243372][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 227.252402][ T10] device bridge_slave_1 left promiscuous mode
[ 227.258793][ T10] bridge0: port 2(bridge_slave_1) entered disabled state
[ 227.266362][ T10] device bridge_slave_0 left promiscuous mode
[ 227.272537][ T10] bridge0: port 1(bridge_slave_0) entered disabled state
[ 227.280360][ T10] device veth1_macvtap left promiscuous mode
[ 227.286537][ T10] device veth0_vlan left promiscuous mode
[ 227.360080][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready
[ 227.368169][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 227.377076][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready
[ 227.385143][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 227.397760][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready
[ 227.406241][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 227.417481][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready
[ 227.425405][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 227.433712][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 227.441405][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 227.449987][ T356] device veth0_vlan entered promiscuous mode
[ 227.459492][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready
[ 227.467726][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 227.476746][ T356] device veth1_macvtap entered promiscuous mode
[ 227.485063][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready
[ 227.492882][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
[ 227.501014][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 227.510785][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
[ 227.519048][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 227.681783][ C0] hrtimer: interrupt took 18016 ns
[ 229.091730][ C1] sched: RT throttling activated
[ 235.095211][ T30] kauditd_printk_skb: 34 callbacks suppressed
[ 235.095223][ T30] audit: type=1400 audit(1776740551.069:108): avc: denied { prog_load } for pid=360 comm="syz.2.17" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1
2026/04/21 03:02:31 executed programs: 3
[ 335.161683][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU
[ 335.168358][ C1] rcu: 1-....: (1 GPs behind) idle=3dd/1/0x4000000000000000 softirq=3058/3082 fqs=4497 last_accelerate: e65b/0d6c dyntick_enabled: 1
[ 335.182055][ C1] (t=10002 jiffies g=1201 q=327)
[ 335.187177][ C1] NMI backtrace for cpu 1
[ 335.191500][ C1] CPU: 1 PID: 361 Comm: syz.2.18 Not tainted syzkaller #0
[ 335.199048][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 335.209204][ C1] Call Trace:
[ 335.212561][ C1]
[ 335.215409][ C1] __dump_stack+0x21/0x30
[ 335.219731][ C1] dump_stack_lvl+0x110/0x170
[ 335.224398][ C1] ? show_regs_print_info+0x20/0x20
[ 335.229666][ C1] ? __wake_up_klogd+0xe3/0x110
[ 335.234592][ C1] ? vprintk_emit+0x175/0x320
[ 335.239258][ C1] dump_stack+0x15/0x20
[ 335.243484][ C1] nmi_cpu_backtrace+0x2af/0x2c0
[ 335.248495][ C1] ? nmi_trigger_cpumask_backtrace+0x240/0x240
[ 335.254631][ C1] ? __kasan_check_write+0x14/0x20
[ 335.259720][ C1] ? _raw_spin_lock_irqsave+0xc2/0x130
[ 335.265160][ C1] ? _raw_spin_lock+0xf0/0xf0
[ 335.269826][ C1] ? _printk+0xda/0x130
[ 335.273962][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 335.280007][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 335.286083][ C1] nmi_trigger_cpumask_backtrace+0x138/0x240
[ 335.292040][ C1] arch_trigger_cpumask_backtrace+0x10/0x20
[ 335.297921][ C1] rcu_dump_cpu_stacks+0x1c7/0x300
[ 335.303113][ C1] print_cpu_stall+0x320/0x600
[ 335.307858][ C1] rcu_sched_clock_irq+0x759/0x12c0
[ 335.313032][ C1] ? rcu_boost_kthread_setaffinity+0x320/0x320
[ 335.319274][ C1] ? raise_softirq+0x7d/0xf0
[ 335.323866][ C1] ? __raise_softirq_irqoff+0xd0/0xd0
[ 335.329214][ C1] ? hrtimer_run_queues+0x166/0x430
[ 335.334389][ C1] update_process_times+0x198/0x200
[ 335.339563][ C1] tick_sched_timer+0x17c/0x240
[ 335.344488][ C1] ? tick_setup_sched_timer+0x450/0x450
[ 335.350135][ C1] __hrtimer_run_queues+0x39f/0x8c0
[ 335.355351][ C1] ? hrtimer_interrupt+0x8c0/0x8c0
[ 335.360454][ C1] ? ktime_get_update_offsets_now+0x2fa/0x310
[ 335.366499][ C1] hrtimer_interrupt+0x3c7/0x8c0
[ 335.371416][ C1] __sysvec_apic_timer_interrupt+0xfa/0x3e0
[ 335.377282][ C1] sysvec_apic_timer_interrupt+0x53/0xc0
[ 335.382899][ C1] asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 335.388862][ C1] RIP: 0010:__stack_depot_save+0x177/0x480
[ 335.394642][ C1] Code: 29 cd 48 8b 3d 02 3d a5 04 45 89 e9 41 81 e1 ff 0f 00 00 4e 8b 24 cf 4d 85 e4 74 5c 44 89 f1 eb 09 4d 8b 24 24 4d 85 e4 74 4e <45> 39 6c 24 08 75 f0 45 39 74 24 0c 75 e9 31 d2 48 8b 34 d3 49 3b
[ 335.414231][ C1] RSP: 0018:ffffc900001d0698 EFLAGS: 00010286
[ 335.420273][ C1] RAX: 0000000000000000 RBX: ffffc900001d0700 RCX: 0000000000000015
[ 335.428235][ C1] RDX: 0000000016c5f5ba RSI: 000000000e280a3d RDI: ffff88823fec0000
[ 335.436196][ C1] RBP: ffffc900001d06f0 R08: 0000000000000001 R09: 0000000000000fe1
[ 335.444295][ C1] R10: 000000008103d108 R11: fffff5200003a0c5 R12: ffff88810b8ac330
[ 335.452264][ C1] R13: 0000000055ab2fe1 R14: 0000000000000015 R15: 0000000000000800
[ 335.460250][ C1] ? __stack_depot_save+0x34/0x480
[ 335.465352][ C1] kasan_set_track+0x5b/0x70
[ 335.469952][ C1] ? kasan_set_track+0x4a/0x70
[ 335.474789][ C1] ? kasan_set_free_info+0x23/0x40
[ 335.479903][ C1] ? ____kasan_slab_free+0x125/0x160
[ 335.485174][ C1] ? __kasan_slab_free+0x11/0x20
[ 335.490212][ C1] ? slab_free_freelist_hook+0xc2/0x190
[ 335.495826][ C1] ? kfree+0xc4/0x270
[ 335.499782][ C1] ? skb_release_data+0x814/0xa10
[ 335.504784][ C1] ? consume_skb+0xab/0x1f0
[ 335.509402][ C1] ? netlink_broadcast_filtered+0x113a/0x1230
[ 335.515455][ C1] ? nlmsg_notify+0xed/0x1b0
[ 335.520123][ C1] ? rtnl_notify+0x9a/0xc0
[ 335.524647][ C1] ? __neigh_notify+0xd3/0x130
[ 335.529482][ C1] ? neigh_timer_handler+0xae1/0xef0
[ 335.534742][ C1] ? call_timer_fn+0x38/0x290
[ 335.539409][ C1] ? __run_timers+0x650/0x9e0
[ 335.544060][ C1] ? run_timer_softirq+0x6a/0xf0
[ 335.548969][ C1] ? handle_softirqs+0x250/0x560
[ 335.553877][ C1] ? __irq_exit_rcu+0x52/0xf0
[ 335.558541][ C1] ? irq_exit_rcu+0x9/0x10
[ 335.562931][ C1] ? sysvec_apic_timer_interrupt+0xa9/0xc0
[ 335.568882][ C1] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 335.575043][ C1] ? generic_exec_single+0x2ab/0x3a0
[ 335.580394][ C1] ? smp_call_function_single+0x1d9/0x490
[ 335.586083][ C1] ? perf_install_in_context+0x4b8/0x760
[ 335.591685][ C1] ? __se_sys_perf_event_open+0x12b1/0x1bb0
[ 335.597553][ C1] ? __x64_sys_perf_event_open+0xbf/0xd0
[ 335.603153][ C1] ? x64_sys_call+0x50d/0x9a0
[ 335.607800][ C1] ? do_syscall_64+0x4c/0xa0
[ 335.612363][ C1] ? entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 335.618404][ C1] ? kfree+0xc4/0x270
[ 335.622392][ C1] kasan_set_free_info+0x23/0x40
[ 335.627310][ C1] ____kasan_slab_free+0x125/0x160
[ 335.632406][ C1] __kasan_slab_free+0x11/0x20
[ 335.637155][ C1] slab_free_freelist_hook+0xc2/0x190
[ 335.642520][ C1] ? skb_release_data+0x814/0xa10
[ 335.647629][ C1] kfree+0xc4/0x270
[ 335.651409][ C1] ? skb_release_data+0x814/0xa10
[ 335.656519][ C1] skb_release_data+0x814/0xa10
[ 335.661440][ C1] consume_skb+0xab/0x1f0
[ 335.665828][ C1] netlink_broadcast_filtered+0x113a/0x1230
[ 335.671693][ C1] nlmsg_notify+0xed/0x1b0
[ 335.676094][ C1] rtnl_notify+0x9a/0xc0
[ 335.680307][ C1] __neigh_notify+0xd3/0x130
[ 335.685006][ C1] neigh_timer_handler+0xae1/0xef0
[ 335.690085][ C1] ? neigh_release+0x90/0x90
[ 335.694649][ C1] call_timer_fn+0x38/0x290
[ 335.699126][ C1] ? neigh_release+0x90/0x90
[ 335.703689][ C1] __run_timers+0x650/0x9e0
[ 335.708230][ C1] ? sched_clock_cpu+0x18/0x3c0
[ 335.713050][ C1] ? calc_index+0x200/0x200
[ 335.717524][ C1] ? asm_common_interrupt+0x27/0x40
[ 335.722705][ C1] run_timer_softirq+0x6a/0xf0
[ 335.727458][ C1] handle_softirqs+0x250/0x560
[ 335.732290][ C1] __irq_exit_rcu+0x52/0xf0
[ 335.736769][ C1] irq_exit_rcu+0x9/0x10
[ 335.741040][ C1] sysvec_apic_timer_interrupt+0xa9/0xc0
[ 335.746648][ C1]
[ 335.749560][ C1]
[ 335.752654][ C1] asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 335.758634][ C1] RIP: 0010:generic_exec_single+0x2ab/0x3a0
[ 335.764524][ C1] Code: 74 71 e8 f8 57 0a 00 43 0f b6 04 3e 84 c0 0f 85 c7 00 00 00 41 c7 04 24 00 00 00 00 bb fa ff ff ff eb 11 e8 d7 57 0a 00 31 db <49> bf 00 00 00 00 00 fc ff df 48 c7 44 24 20 0e 36 e0 45 4b c7 44
[ 335.784434][ C1] RSP: 0018:ffffc90000a77a20 EFLAGS: 00000293
[ 335.790494][ C1] RAX: ffffffff815f6e9d RBX: 0000000000000000 RCX: ffff88810e0362c0
[ 335.798457][ C1] RDX: 0000000000000000 RSI: 0000000000000200 RDI: 0000000000000000
[ 335.806409][ C1] RBP: ffffc90000a77ad0 R08: ffffc90000a76af7 R09: fffff5200014ee90
[ 335.814457][ C1] R10: dffffc0000000000 R11: fffff5200014ed5f R12: ffffc90000a77b28
[ 335.822594][ C1] R13: 1ffff9200014ef48 R14: ffffc90000a77c60 R15: 0000000000000200
[ 335.830557][ C1] ? generic_exec_single+0x23d/0x3a0
[ 335.836028][ C1] ? memcpy+0x56/0x70
[ 335.839999][ C1] ? event_function+0x2e0/0x2e0
[ 335.844833][ C1] ? smp_call_function_single+0x490/0x490
[ 335.850537][ C1] ? avc_has_perm_noaudit+0x30b/0x490
[ 335.855883][ C1] ? __kasan_check_write+0x14/0x20
[ 335.860973][ C1] smp_call_function_single+0x1d9/0x490
[ 335.866508][ C1] ? event_function+0x2e0/0x2e0
[ 335.871341][ C1] ? flush_smp_call_function_from_idle+0x1b0/0x1b0
[ 335.877830][ C1] ? _raw_spin_unlock_irqrestore+0x5b/0x80
[ 335.883624][ C1] ? event_function+0x2e0/0x2e0
[ 335.888453][ C1] ? selinux_capable+0x2b6/0x3b0
[ 335.893365][ C1] ? memcpy+0x56/0x70
[ 335.897329][ C1] perf_install_in_context+0x4b8/0x760
[ 335.902764][ C1] ? exclusive_event_installable+0x230/0x230
[ 335.908730][ C1] ? add_event_to_ctx+0xd80/0xd80
[ 335.913787][ C1] ? __kasan_check_write+0x14/0x20
[ 335.918900][ C1] ? mutex_lock+0x9b/0x1c0
[ 335.923295][ C1] ? wait_for_completion_killable_timeout+0x10/0x10
[ 335.929854][ C1] ? capable+0x8a/0xe0
[ 335.933906][ C1] ? exclusive_event_installable+0x7c/0x230
[ 335.939791][ C1] ? perf_event__header_size+0x163/0x230
[ 335.945498][ C1] __se_sys_perf_event_open+0x12b1/0x1bb0
[ 335.951295][ C1] ? __x64_sys_perf_event_open+0xd0/0xd0
[ 335.956967][ C1] __x64_sys_perf_event_open+0xbf/0xd0
[ 335.962542][ C1] x64_sys_call+0x50d/0x9a0
[ 335.967040][ C1] do_syscall_64+0x4c/0xa0
[ 335.971623][ C1] ? clear_bhb_loop+0x50/0xa0
[ 335.976289][ C1] ? clear_bhb_loop+0x50/0xa0
[ 335.980994][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 335.986884][ C1] RIP: 0033:0x7f6709b0f819
[ 335.991282][ C1] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
[ 336.011092][ C1] RSP: 002b:00007ffdc4ab99f8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
[ 336.019489][ C1] RAX: ffffffffffffffda RBX: 00007f6709d88fa0 RCX: 00007f6709b0f819
[ 336.027456][ C1] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000100
[ 336.035502][ C1] RBP: 00007f6709ba5c91 R08: 0000000000000000 R09: 0000000000000000
[ 336.043693][ C1] R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
[ 336.051657][ C1] R13: 00007f6709d88fac R14: 00007f6709d88fa0 R15: 00007f6709d88fa0
[ 336.059652][ C1]
[ 337.680009][ T366] bridge0: port 1(bridge_slave_0) entered blocking state
[ 337.687111][ T366] bridge0: port 1(bridge_slave_0) entered disabled state
[ 337.694889][ T366] device bridge_slave_0 entered promiscuous mode
[ 337.702281][ T366] bridge0: port 2(bridge_slave_1) entered blocking state
[ 337.709314][ T366] bridge0: port 2(bridge_slave_1) entered disabled state
[ 337.716988][ T366] device bridge_slave_1 entered promiscuous mode
[ 337.785277][ T366] bridge0: port 2(bridge_slave_1) entered blocking state
[ 337.792464][ T366] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 337.799771][ T366] bridge0: port 1(bridge_slave_0) entered blocking state
[ 337.806855][ T366] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 338.181893][ T317] bridge0: port 1(bridge_slave_0) entered disabled state
[ 438.201651][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 438.208708][ C0] (detected by 0, t=10002 jiffies, g=1205, q=890)
[ 438.215186][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10002 (4294981036-4294971034), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 438.228530][ C0] rcu: rcu_preempt kthread starved for 10002 jiffies! g1205 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
[ 438.239613][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
[ 438.249560][ C0] rcu: RCU grace-period kthread stack dump:
[ 438.255430][ C0] task:rcu_preempt state:R running task stack:28688 pid: 14 ppid: 2 flags:0x00004000
[ 438.266286][ C0] Call Trace:
[ 438.269550][ C0]
[ 438.272572][ C0] __schedule+0xb6e/0x14c0
[ 438.276976][ C0] ? release_firmware_map_entry+0x190/0x190
[ 438.283015][ C0] ? _raw_spin_unlock_irqrestore+0x5b/0x80
[ 438.288815][ C0] ? __mod_timer+0x7da/0xb50
[ 438.293504][ C0] schedule+0x11e/0x1e0
[ 438.297659][ C0] schedule_timeout+0x159/0x340
[ 438.302503][ C0] ? console_conditional_schedule+0x30/0x30
[ 438.308552][ C0] ? update_process_times+0x200/0x200
[ 438.313908][ C0] ? prepare_to_swait_event+0x308/0x320
[ 438.319435][ C0] rcu_gp_fqs_loop+0x2ae/0xf80
[ 438.324362][ C0] ? __kasan_check_write+0x14/0x20
[ 438.329463][ C0] ? debug_smp_processor_id+0x17/0x20
[ 438.334928][ C0] ? __note_gp_changes+0x4e2/0x9e0
[ 438.340024][ C0] ? rcu_gp_init+0xc00/0xc00
[ 438.344719][ C0] ? _raw_spin_unlock_irq+0x4e/0x70
[ 438.349981][ C0] ? rcu_gp_init+0x9a7/0xc00
[ 438.354557][ C0] rcu_gp_kthread+0x9b/0x360
[ 438.359126][ C0] ? _raw_spin_lock+0xf0/0xf0
[ 438.363780][ C0] ? wake_nocb_gp+0x1d0/0x1d0
[ 438.369044][ C0] ? __kasan_check_read+0x11/0x20
[ 438.374045][ C0] ? __kthread_parkme+0xac/0x200
[ 438.378955][ C0] kthread+0x411/0x500
[ 438.382993][ C0] ? wake_nocb_gp+0x1d0/0x1d0
[ 438.387644][ C0] ? kthread_blkcg+0xd0/0xd0
[ 438.392226][ C0] ret_from_fork+0x1f/0x30
[ 438.396618][ C0]
[ 438.399718][ C0] rcu: Stack dump where RCU GP kthread last ran:
[ 438.406010][ C0] NMI backtrace for cpu 0
[ 438.410312][ C0] CPU: 0 PID: 361 Comm: syz.2.18 Not tainted syzkaller #0
[ 438.417402][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 438.427625][ C0] Call Trace:
[ 438.430986][ C0]
[ 438.433912][ C0] __dump_stack+0x21/0x30
[ 438.438249][ C0] dump_stack_lvl+0x110/0x170
[ 438.442917][ C0] ? show_regs_print_info+0x20/0x20
[ 438.448107][ C0] dump_stack+0x15/0x20
[ 438.452279][ C0] nmi_cpu_backtrace+0x2af/0x2c0
[ 438.457307][ C0] ? nmi_trigger_cpumask_backtrace+0x240/0x240
[ 438.463450][ C0] ? load_image+0x3e0/0x3e0
[ 438.467953][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 438.474001][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 438.480053][ C0] nmi_trigger_cpumask_backtrace+0x138/0x240
[ 438.486013][ C0] arch_trigger_cpumask_backtrace+0x10/0x20
[ 438.491888][ C0] rcu_check_gp_kthread_starvation+0x1e0/0x260
[ 438.498017][ C0] print_other_cpu_stall+0xe33/0x1010
[ 438.503375][ C0] ? hrtimer_forward+0x18f/0x2a0
[ 438.508351][ C0] ? print_cpu_stall+0x600/0x600
[ 438.513434][ C0] ? tick_nohz_handler+0x300/0x300
[ 438.518528][ C0] ? accumulate_nsecs_to_secs+0xb1/0x250
[ 438.524236][ C0] ? timekeeping_update+0x397/0x470
[ 438.529415][ C0] ? memcpy+0x56/0x70
[ 438.533375][ C0] rcu_sched_clock_irq+0x8b2/0x12c0
[ 438.538575][ C0] ? rcu_boost_kthread_setaffinity+0x320/0x320
[ 438.544709][ C0] ? raise_softirq+0x7d/0xf0
[ 438.549283][ C0] ? __raise_softirq_irqoff+0xd0/0xd0
[ 438.554645][ C0] ? hrtimer_run_queues+0x166/0x430
[ 438.560001][ C0] update_process_times+0x198/0x200
[ 438.565175][ C0] tick_sched_timer+0x17c/0x240
[ 438.570008][ C0] ? tick_setup_sched_timer+0x450/0x450
[ 438.575543][ C0] __hrtimer_run_queues+0x39f/0x8c0
[ 438.580728][ C0] ? hrtimer_interrupt+0x8c0/0x8c0
[ 438.585834][ C0] ? ktime_get_update_offsets_now+0x2fa/0x310
[ 438.592010][ C0] hrtimer_interrupt+0x3c7/0x8c0
[ 438.596937][ C0] __sysvec_apic_timer_interrupt+0xfa/0x3e0
[ 438.602831][ C0] sysvec_apic_timer_interrupt+0x53/0xc0
[ 438.608457][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 438.614436][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x5c/0x60
[ 438.620663][ C0] Code: 38 0b 00 00 83 fa 02 75 21 48 8b 91 40 0b 00 00 48 8b 32 48 8d 7e 01 8b 89 3c 0b 00 00 48 39 cf 73 08 48 89 44 f2 08 48 89 3a <5d> c3 66 90 55 48 89 e5 48 8b 45 08 65 48 8b 0d 30 a6 98 7e 65 8b
[ 438.640254][ C0] RSP: 0018:ffffc900000072d0 EFLAGS: 00000246
[ 438.646315][ C0] RAX: ffffffff83c0a846 RBX: ffff88823fee6000 RCX: ffff88810e0362c0
[ 438.654280][ C0] RDX: 0000000000000100 RSI: ffff88810f950000 RDI: ffff88823fee6000
[ 438.662231][ C0] RBP: ffffc900000072d0 R08: 1ffff11047fdcc0e R09: 1ffff11047fdcc0e
[ 438.670179][ C0] R10: dffffc0000000000 R11: fffffbfff0db242b R12: 1ffff11021bdef18
[ 438.678127][ C0] R13: dffffc0000000000 R14: ffff88810def78c4 R15: dffffc0000000000
[ 438.686094][ C0] ? validate_xmit_skb+0x76/0xbf0
[ 438.691098][ C0] validate_xmit_skb+0x76/0xbf0
[ 438.695921][ C0] ? __ip6_finish_output+0x61e/0x7d0
[ 438.701181][ C0] ? ip6_finish_output+0x31/0x240
[ 438.706181][ C0] ? ip6_output+0x1fa/0x410
[ 438.710656][ C0] ? ndisc_send_skb+0x80d/0xd10
[ 438.715479][ C0] ? ndisc_send_rs+0x6e5/0x960
[ 438.720218][ C0] ? addrconf_rs_timer+0x2cf/0x610
[ 438.725310][ C0] ? validate_xmit_skb_list+0x120/0x120
[ 438.730844][ C0] ? __irq_exit_rcu+0x52/0xf0
[ 438.735570][ C0] ? irq_exit_rcu+0x9/0x10
[ 438.739966][ C0] ? sysvec_apic_timer_interrupt+0xa9/0xc0
[ 438.745772][ C0] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 438.751918][ C0] ? finish_task_switch+0x173/0x780
[ 438.757107][ C0] ? netdev_core_pick_tx+0xd6/0x310
[ 438.762293][ C0] __dev_queue_xmit+0x125c/0x2da0
[ 438.767388][ C0] ? dev_queue_xmit+0x20/0x20
[ 438.772048][ C0] ? __kasan_check_write+0x14/0x20
[ 438.777147][ C0] ? _raw_write_lock_bh+0x94/0xf0
[ 438.782234][ C0] ? _raw_write_lock_irq+0xf0/0xf0
[ 438.787415][ C0] ? ndisc_constructor+0x69d/0x8b0
[ 438.792582][ C0] ? __local_bh_enable_ip+0x58/0x80
[ 438.797751][ C0] ? _raw_write_unlock_bh+0x2f/0x48
[ 438.802920][ C0] ? ___neigh_create+0x16ab/0x1be0
[ 438.808004][ C0] dev_queue_xmit+0x17/0x20
[ 438.812577][ C0] neigh_connected_output+0x432/0x460
[ 438.817920][ C0] ip6_finish_output2+0x10b6/0x17a0
[ 438.823090][ C0] ? __ip6_finish_output+0x7d0/0x7d0
[ 438.828346][ C0] ? ip6t_do_table+0x131f/0x14e0
[ 438.833256][ C0] __ip6_finish_output+0x61e/0x7d0
[ 438.838425][ C0] ip6_finish_output+0x31/0x240
[ 438.843249][ C0] ? ip6_output+0x3ea/0x410
[ 438.847735][ C0] ip6_output+0x1fa/0x410
[ 438.852054][ C0] ? ac6_seq_show+0xf0/0xf0
[ 438.856727][ C0] ? ip6_output+0x410/0x410
[ 438.861393][ C0] ndisc_send_skb+0x80d/0xd10
[ 438.866059][ C0] ? ndisc_alloc_skb+0x2b0/0x2b0
[ 438.871126][ C0] ? ndisc_error_report+0xc0/0xc0
[ 438.876223][ C0] ? slab_post_alloc_hook+0x4f/0x2b0
[ 438.881492][ C0] ? should_failslab+0x9/0x20
[ 438.886151][ C0] ndisc_send_rs+0x6e5/0x960
[ 438.890716][ C0] addrconf_rs_timer+0x2cf/0x610
[ 438.895629][ C0] ? addrconf_disable_policy_idev+0x360/0x360
[ 438.901670][ C0] ? _raw_spin_lock_irq+0x95/0xf0
[ 438.906666][ C0] ? _raw_spin_lock_irqsave+0x130/0x130
[ 438.912189][ C0] ? addrconf_disable_policy_idev+0x360/0x360
[ 438.918320][ C0] call_timer_fn+0x38/0x290
[ 438.922799][ C0] ? addrconf_disable_policy_idev+0x360/0x360
[ 438.928843][ C0] __run_timers+0x650/0x9e0
[ 438.933531][ C0] ? calc_index+0x200/0x200
[ 438.938008][ C0] ? __irq_exit_rcu+0x5e/0xf0
[ 438.942676][ C0] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 438.948813][ C0] run_timer_softirq+0x6a/0xf0
[ 438.953566][ C0] handle_softirqs+0x250/0x560
[ 438.958317][ C0] __irq_exit_rcu+0x52/0xf0
[ 438.962927][ C0] irq_exit_rcu+0x9/0x10
[ 438.967160][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0
[ 438.972775][ C0]
[ 438.975693][ C0]
[ 438.978599][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 438.984565][ C0] RIP: 0010:finish_task_switch+0x173/0x780
[ 438.990446][ C0] Code: 80 3c 2b 00 74 08 4c 89 f7 e8 d9 64 60 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 15 a5 6b 03 fb 49 8d 9f 38 0b 00 00 <48> 89 d8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df 42 0f b6 04 28
[ 439.010031][ C0] RSP: 0018:ffffc90000a77880 EFLAGS: 00000282
[ 439.016087][ C0] RAX: 0000000080000001 RBX: ffff88810e036df8 RCX: 0000000000000000
[ 439.024037][ C0] RDX: 0000000040000000 RSI: 0000000000000000 RDI: 00000000ffffffff
[ 439.031993][ C0] RBP: ffffc90000a778d0 R08: ffffffff86e94f93 R09: 1ffffffff0dd29f2
[ 439.039938][ C0] R10: dffffc0000000000 R11: fffffbfff0dd29f3 R12: ffff8881f70378c0
[ 439.042032][ T17] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...
[ 439.047886][ C0] R13: 0000000000000000 R14: ffff8881f7038408 R15: ffff88810e0362c0
[ 439.047907][ C0] ? __switch_to_asm+0x3a/0x60
[ 439.056498][ T17] } 10086 jiffies s: 1205 root: 0x1/.
[ 439.064404][ C0] __schedule+0xb76/0x14c0
[ 439.064424][ C0] ? release_firmware_map_entry+0x190/0x190
[ 439.069152][ T17] rcu: blocking rcu_node structures (internal RCU debug):
[ 439.074678][ C0] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 439.074699][ C0] ? preempt_schedule+0xbc/0xd0
[ 439.079092][ T17] Task dump for CPU 0:
[ 439.084942][ C0] preempt_schedule_common+0x9b/0xf0
[ 439.084958][ C0] preempt_schedule+0xbc/0xd0
[ 439.092072][ T17] task:syz.2.18 state:R
[ 439.098167][ C0] ? schedule_preempt_disabled+0x20/0x20
[ 439.102995][ T17] running task
[ 439.107021][ C0] ? event_function+0x2e0/0x2e0
[ 439.112317][ T17] stack:26720 pid: 361 ppid: 356 flags:0x0000400c
[ 439.116938][ C0] ? smp_call_function_single+0x490/0x490
[ 439.121683][ T17] Call Trace:
[ 439.127273][ C0] preempt_schedule_thunk+0x16/0x18
[ 439.131145][ T17]
[ 439.135965][ C0] ? smp_call_function_single+0x3f2/0x490
[ 439.135984][ C0] smp_call_function_single+0x3f7/0x490
[ 439.142740][ T17] __schedule+0xb76/0x14c0
[ 439.148401][ C0] ? event_function+0x2e0/0x2e0
[ 439.151670][ T17] ? release_firmware_map_entry+0x190/0x190
[ 439.156825][ C0] ? flush_smp_call_function_from_idle+0x1b0/0x1b0
[ 439.159733][ T17] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 439.165425][ C0] ? _raw_spin_unlock_irqrestore+0x5b/0x80
[ 439.165443][ C0] ? event_function+0x2e0/0x2e0
[ 439.170953][ T17] ? preempt_schedule+0xbc/0xd0
[ 439.175339][ C0] ? selinux_capable+0x2b6/0x3b0
[ 439.175356][ C0] ? memcpy+0x56/0x70
[ 439.180180][ T17] preempt_schedule_common+0x9b/0xf0
[ 439.186043][ C0] perf_install_in_context+0x4b8/0x760
[ 439.186061][ C0] ? exclusive_event_installable+0x230/0x230
[ 439.192579][ T17] preempt_schedule+0xbc/0xd0
[ 439.198657][ C0] ? add_event_to_ctx+0xd80/0xd80
[ 439.204449][ T17] ? schedule_preempt_disabled+0x20/0x20
[ 439.209256][ C0] ? __kasan_check_write+0x14/0x20
[ 439.214090][ T17] ? event_function+0x2e0/0x2e0
[ 439.218980][ C0] ? mutex_lock+0x9b/0x1c0
[ 439.222942][ T17] ? smp_call_function_single+0x490/0x490
[ 439.228183][ C0] ? wait_for_completion_killable_timeout+0x10/0x10
[ 439.233622][ T17] preempt_schedule_thunk+0x16/0x18
[ 439.239559][ C0] ? capable+0x8a/0xe0
[ 439.244241][ T17] ? smp_call_function_single+0x3f2/0x490
[ 439.249205][ C0] ? exclusive_event_installable+0x7c/0x230
[ 439.254816][ T17] smp_call_function_single+0x3f7/0x490
[ 439.259895][ C0] ? perf_event__header_size+0x163/0x230
[ 439.264727][ T17] ? event_function+0x2e0/0x2e0
[ 439.269104][ C0] __se_sys_perf_event_open+0x12b1/0x1bb0
[ 439.274822][ T17] ? flush_smp_call_function_from_idle+0x1b0/0x1b0
[ 439.281374][ C0] ? __x64_sys_perf_event_open+0xd0/0xd0
[ 439.286548][ T17] ? _raw_spin_unlock_irqrestore+0x5b/0x80
[ 439.290584][ C0] __x64_sys_perf_event_open+0xbf/0xd0
[ 439.296293][ T17] ? event_function+0x2e0/0x2e0
[ 439.302181][ C0] x64_sys_call+0x50d/0x9a0
[ 439.307700][ T17] ? selinux_capable+0x2b6/0x3b0
[ 439.313301][ C0] do_syscall_64+0x4c/0xa0
[ 439.318132][ T17] ? memcpy+0x56/0x70
[ 439.323817][ C0] ? clear_bhb_loop+0x50/0xa0
[ 439.323832][ C0] ? clear_bhb_loop+0x50/0xa0
[ 439.330299][ T17] perf_install_in_context+0x4b8/0x760
[ 439.335899][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 439.341698][ T17] ? exclusive_event_installable+0x230/0x230
[ 439.347198][ C0] RIP: 0033:0x7f6709b0f819
[ 439.352113][ T17] ? add_event_to_ctx+0xd80/0xd80
[ 439.356579][ C0] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
[ 439.361516][ T17] ? __kasan_check_write+0x14/0x20
[ 439.365905][ C0] RSP: 002b:00007ffdc4ab99f8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
[ 439.365922][ C0] RAX: ffffffffffffffda RBX: 00007f6709d88fa0 RCX: 00007f6709b0f819
[ 439.369868][ T17] ? mutex_lock+0x9b/0x1c0
[ 439.374598][ C0] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000100
[ 439.374609][ C0] RBP: 00007f6709ba5c91 R08: 0000000000000000 R09: 0000000000000000
[ 439.379252][ T17] ? wait_for_completion_killable_timeout+0x10/0x10
[ 439.384683][ C0] R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
[ 439.384694][ C0] R13: 00007f6709d88fac R14: 00007f6709d88fa0 R15: 00007f6709d88fa0
[ 439.390556][ T17] ? capable+0x8a/0xe0
[ 439.396516][ C0]
[ 439.497765][ T17] ? exclusive_event_installable+0x7c/0x230
[ 439.503672][ T17] ? perf_event__header_size+0x163/0x230
[ 439.509296][ T17] __se_sys_perf_event_open+0x12b1/0x1bb0
[ 439.515046][ T17] ? __x64_sys_perf_event_open+0xd0/0xd0
[ 439.520678][ T17] __x64_sys_perf_event_open+0xbf/0xd0
[ 439.526136][ T17] x64_sys_call+0x50d/0x9a0
[ 439.530632][ T17] do_syscall_64+0x4c/0xa0
[ 439.535048][ T17] ? clear_bhb_loop+0x50/0xa0
[ 439.539723][ T17] ? clear_bhb_loop+0x50/0xa0
[ 439.544406][ T17] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 439.550304][ T17] RIP: 0033:0x7f6709b0f819
[ 439.554729][ T17] RSP: 002b:00007ffdc4ab99f8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
[ 439.563138][ T17] RAX: ffffffffffffffda RBX: 00007f6709d88fa0 RCX: 00007f6709b0f819
[ 439.571108][ T17] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000100
[ 439.579115][ T17] RBP: 00007f6709ba5c91 R08: 0000000000000000 R09: 0000000000000000
[ 439.587129][ T17] R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
[ 439.595219][ T17] R13: 00007f6709d88fac R14: 00007f6709d88fa0 R15: 00007f6709d88fa0
[ 439.603204][ T17]
[ 458.881720][ T31] INFO: task kworker/u4:1:10 blocked for more than 122 seconds.
[ 458.889380][ T31] Not tainted syzkaller #0
[ 458.895739][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 458.904672][ T31] task:kworker/u4:1 state:D stack:24960 pid: 10 ppid: 2 flags:0x00004000
[ 458.914014][ T31] Workqueue: netns cleanup_net
[ 458.918785][ T31] Call Trace:
[ 458.922207][ T31]
[ 458.925135][ T31] __schedule+0xb6e/0x14c0
[ 458.929548][ T31] ? release_firmware_map_entry+0x190/0x190
[ 458.935598][ T31] ? kthread_data+0x50/0xc0
[ 458.940098][ T31] ? wq_worker_sleeping+0x60/0x200
[ 458.945377][ T31] schedule+0x11e/0x1e0
[ 458.949528][ T31] schedule_timeout+0xba/0x340
[ 458.954428][ T31] ? console_conditional_schedule+0x30/0x30
[ 458.960320][ T31] ? generic_exec_single+0x236/0x3a0
[ 458.965771][ T31] ? __prepare_to_swait+0xa8/0x130
[ 458.970881][ T31] wait_for_common+0x277/0x440
[ 458.975869][ T31] ? wait_for_completion+0x20/0x20
[ 458.980979][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 458.987739][ T31] ? do_softirq+0xe9/0x130
[ 458.992273][ T31] wait_for_completion+0x18/0x20
[ 458.997222][ T31] rcu_barrier+0x373/0x400
[ 459.001812][ T31] l2tp_exit_net+0x13c/0x1e0
[ 459.006403][ T31] ? pde_put+0x14e/0x1a0
[ 459.010760][ T31] ? l2tp_init_net+0x110/0x110
[ 459.015806][ T31] cleanup_net+0x593/0xae0
[ 459.020228][ T31] ? ops_init+0x4a0/0x4a0
[ 459.024797][ T31] process_one_work+0x6be/0xba0
[ 459.029658][ T31] worker_thread+0xa59/0x1200
[ 459.034540][ T31] kthread+0x411/0x500
[ 459.038614][ T31] ? worker_clr_flags+0x190/0x190
[ 459.043802][ T31] ? kthread_blkcg+0xd0/0xd0
[ 459.048391][ T31] ret_from_fork+0x1f/0x30
[ 459.053150][ T31]
[ 459.056207][ T31] NMI backtrace for cpu 1
[ 459.060520][ T31] CPU: 1 PID: 31 Comm: khungtaskd Not tainted syzkaller #0
[ 459.067712][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 459.077754][ T31] Call Trace:
[ 459.081020][ T31]
[ 459.083946][ T31] __dump_stack+0x21/0x30
[ 459.088360][ T31] dump_stack_lvl+0x110/0x170
[ 459.093027][ T31] ? show_regs_print_info+0x20/0x20
[ 459.098222][ T31] dump_stack+0x15/0x20
[ 459.102365][ T31] nmi_cpu_backtrace+0x2af/0x2c0
[ 459.107298][ T31] ? rcu_read_unlock_special+0xb2/0x420
[ 459.112831][ T31] ? nmi_trigger_cpumask_backtrace+0x240/0x240
[ 459.118983][ T31] ? __rcu_read_unlock+0xa0/0xa0
[ 459.123914][ T31] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 459.130006][ T31] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 459.136079][ T31] nmi_trigger_cpumask_backtrace+0x138/0x240
[ 459.142153][ T31] arch_trigger_cpumask_backtrace+0x10/0x20
[ 459.148057][ T31] watchdog+0xd92/0xee0
[ 459.152216][ T31] ? hungtask_pm_notify+0x50/0x50
[ 459.157238][ T31] ? __kasan_check_read+0x11/0x20
[ 459.162265][ T31] ? __kthread_parkme+0xac/0x200
[ 459.167197][ T31] kthread+0x411/0x500
[ 459.171263][ T31] ? hungtask_pm_notify+0x50/0x50
[ 459.176282][ T31] ? kthread_blkcg+0xd0/0xd0
[ 459.180865][ T31] ret_from_fork+0x1f/0x30
[ 459.185280][ T31]
[ 459.188347][ T31] Sending NMI from CPU 1 to CPUs 0:
[ 459.193566][ C0] NMI backtrace for cpu 0
[ 459.193575][ C0] CPU: 0 PID: 361 Comm: syz.2.18 Not tainted syzkaller #0
[ 459.193589][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 459.193597][ C0] RIP: 0010:unwind_get_return_address+0x0/0x90
[ 459.193618][ C0] Code: 5e 41 5f 5d c3 48 c7 c1 a0 6a 6d 86 80 e1 07 80 c1 03 38 c1 7c af 48 c7 c7 a0 6a 6d 86 e8 a8 4a 77 00 eb a1 00 00 cc cc 00 00 <55> 48 89 e5 41 57 41 56 53 48 89 fb 49 be 00 00 00 00 00 fc ff df
[ 459.193630][ C0] RSP: 0018:ffffc90000006978 EFLAGS: 00000006
[ 459.193647][ C0] RAX: ffffffff8100f8b2 RBX: ffffc900000069e0 RCX: ffff88810e0362c0
[ 459.193658][ C0] RDX: 0000000000010100 RSI: 1ffff92000000d3d RDI: ffffc900000069e0
[ 459.193668][ C0] RBP: ffffc90000006ab0 R08: ffffc90000006a01 R09: ffffc900000069e0
[ 459.193678][ C0] R10: dffffc0000000000 R11: fffff52000000d48 R12: dffffc0000000000
[ 459.193693][ C0] R13: 000000000000007f R14: ffffffff8100790a R15: 1ffff92000000d61
[ 459.193703][ C0] FS: 000055557ce00500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[ 459.193716][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 459.193725][ C0] CR2: 00007ff0503fbda0 CR3: 0000000122466000 CR4: 00000000003506b0
[ 459.193738][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 459.193746][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 459.193759][ C0] Call Trace:
[ 459.193770][ C0]
[ 459.193774][ C0] ? perf_callchain_kernel+0x2bf/0x620
[ 459.193791][ C0] ? arch_perf_update_userpage+0x3c0/0x3c0
[ 459.193807][ C0] ? smp_call_function_single+0x3f7/0x490
[ 459.193824][ C0] ? debug_smp_processor_id+0x17/0x20
[ 459.193837][ C0] ? get_callchain_entry+0x170/0x380
[ 459.193853][ C0] get_perf_callchain+0x356/0x460
[ 459.193867][ C0] ? put_callchain_entry+0xb0/0xb0
[ 459.193881][ C0] ? perf_event_output_forward+0x12e/0x1a0
[ 459.193897][ C0] ? __perf_event_header__init_id+0x46a/0x5a0
[ 459.193912][ C0] ? kvm_is_in_guest+0x28/0x40
[ 459.193926][ C0] perf_prepare_sample+0x355/0x1a40
[ 459.193943][ C0] ? perf_callchain+0x1c0/0x1c0
[ 459.193958][ C0] perf_event_output_forward+0xd1/0x1a0
[ 459.193973][ C0] ? perf_get_page_size+0x3a0/0x3a0
[ 459.193988][ C0] ? perf_trace_run_bpf_submit+0x1c0/0x1c0
[ 459.194004][ C0] ? __this_cpu_preempt_check+0x13/0x20
[ 459.194023][ C0] ? __perf_event_account_interrupt+0x1a4/0x2c0
[ 459.194039][ C0] __perf_event_overflow+0x1f9/0x380
[ 459.194055][ C0] perf_swevent_hrtimer+0x41b/0x5b0
[ 459.194069][ C0] ? cpu_clock_event_read+0x50/0x50
[ 459.194087][ C0] ? timerqueue_del+0xd3/0x120
[ 459.194100][ C0] ? cpu_clock_event_read+0x50/0x50
[ 459.194113][ C0] __hrtimer_run_queues+0x39f/0x8c0
[ 459.194132][ C0] ? hrtimer_interrupt+0x8c0/0x8c0
[ 459.194146][ C0] ? ktime_get_update_offsets_now+0x2fa/0x310
[ 459.194161][ C0] hrtimer_interrupt+0x3c7/0x8c0
[ 459.194179][ C0] __sysvec_apic_timer_interrupt+0xfa/0x3e0
[ 459.194194][ C0] sysvec_apic_timer_interrupt+0x53/0xc0
[ 459.194207][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 459.194224][ C0] RIP: 0010:__dev_queue_xmit+0x8c4/0x2da0
[ 459.194240][ C0] Code: 0f 1f 44 00 00 e8 fc ef a8 fd 4d 89 ee 49 c1 ee 03 48 b8 00 00 00 00 00 fc ff df 41 80 3c 06 00 74 08 4c 89 ef e8 8c 1e e8 fd <49> 83 7d 00 00 74 53 48 b9 00 00 00 00 00 fc ff df 48 8b 44 24 70
[ 459.194254][ C0] RSP: 0018:ffffc900000073c0 EFLAGS: 00010246
[ 459.194265][ C0] RAX: dffffc0000000000 RBX: ffff88810fe6f9c8 RCX: ffff88810e0362c0
[ 459.194275][ C0] RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000002
[ 459.194283][ C0] RBP: ffffc90000007590 R08: 0000000000000000 R09: 0000000000000002
[ 459.194292][ C0] R10: 0000000000000003 R11: 0000000000000100 R12: ffff88810fe6f9c0
[ 459.194301][ C0] R13: ffff88810f215400 R14: 1ffff11021e42a80 R15: ffff88810dc363c0
[ 459.194316][ C0] ? dev_queue_xmit+0x20/0x20
[ 459.194328][ C0] ? __kasan_check_write+0x14/0x20
[ 459.194342][ C0] ? _raw_write_lock_bh+0x94/0xf0
[ 459.194357][ C0] ? _raw_write_lock_irq+0xf0/0xf0
[ 459.194372][ C0] ? eth_header+0x123/0x210
[ 459.194386][ C0] ? memcpy+0x56/0x70
[ 459.194399][ C0] dev_queue_xmit+0x17/0x20
[ 459.194412][ C0] neigh_resolve_output+0x6cf/0x770
[ 459.194428][ C0] ip6_finish_output2+0x10b6/0x17a0
[ 459.194446][ C0] ? __ip6_finish_output+0x7d0/0x7d0
[ 459.194461][ C0] ? ip6t_do_table+0x131f/0x14e0
[ 459.194476][ C0] __ip6_finish_output+0x61e/0x7d0
[ 459.194491][ C0] ip6_finish_output+0x31/0x240
[ 459.194505][ C0] ? ip6_output+0x3ea/0x410
[ 459.194519][ C0] ip6_output+0x1fa/0x410
[ 459.194532][ C0] ? ac6_seq_show+0xf0/0xf0
[ 459.194546][ C0] ? ip6_output+0x410/0x410
[ 459.194566][ C0] ndisc_send_skb+0x80d/0xd10
[ 459.194581][ C0] ? ndisc_alloc_skb+0x2b0/0x2b0
[ 459.194594][ C0] ? ndisc_error_report+0xc0/0xc0
[ 459.194609][ C0] ? ndisc_send_rs+0x5fc/0x960
[ 459.194621][ C0] ? memcpy+0x56/0x70
[ 459.194634][ C0] ndisc_send_rs+0x6e5/0x960
[ 459.194652][ C0] addrconf_rs_timer+0x2cf/0x610
[ 459.194666][ C0] ? addrconf_disable_policy_idev+0x360/0x360
[ 459.194681][ C0] ? addrconf_disable_policy_idev+0x360/0x360
[ 459.194694][ C0] call_timer_fn+0x38/0x290
[ 459.194708][ C0] ? addrconf_disable_policy_idev+0x360/0x360
[ 459.194722][ C0] __run_timers+0x650/0x9e0
[ 459.194738][ C0] ? calc_index+0x200/0x200
[ 459.194751][ C0] ? __irq_exit_rcu+0x5e/0xf0
[ 459.194766][ C0] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 459.194784][ C0] run_timer_softirq+0x6a/0xf0
[ 459.194798][ C0] handle_softirqs+0x250/0x560
[ 459.194814][ C0] __irq_exit_rcu+0x52/0xf0
[ 459.194827][ C0] irq_exit_rcu+0x9/0x10
[ 459.194840][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0
[ 459.194853][ C0]
[ 459.194857][ C0]
[ 459.194861][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 459.194877][ C0] RIP: 0010:finish_task_switch+0x173/0x780
[ 459.194893][ C0] Code: 80 3c 2b 00 74 08 4c 89 f7 e8 d9 64 60 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 15 a5 6b 03 fb 49 8d 9f 38 0b 00 00 <48> 89 d8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df 42 0f b6 04 28
[ 459.194904][ C0] RSP: 0018:ffffc90000a77880 EFLAGS: 00000282
[ 459.194914][ C0] RAX: 0000000080000001 RBX: ffff88810e036df8 RCX: 0000000000000000
[ 459.194923][ C0] RDX: 0000000040000000 RSI: 0000000000000000 RDI: 00000000ffffffff
[ 459.194932][ C0] RBP: ffffc90000a778d0 R08: ffffffff86e94f93 R09: 1ffffffff0dd29f2
[ 459.194942][ C0] R10: dffffc0000000000 R11: fffffbfff0dd29f3 R12: ffff8881f70378c0
[ 459.194952][ C0] R13: 0000000000000000 R14: ffff8881f7038408 R15: ffff88810e0362c0
[ 459.194964][ C0] ? __switch_to_asm+0x3a/0x60
[ 459.194977][ C0] __schedule+0xb76/0x14c0
[ 459.194991][ C0] ? release_firmware_map_entry+0x190/0x190
[ 459.195009][ C0] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 459.195026][ C0] ? preempt_schedule+0xbc/0xd0
[ 459.195038][ C0] preempt_schedule_common+0x9b/0xf0
[ 459.195051][ C0] preempt_schedule+0xbc/0xd0
[ 459.195063][ C0] ? schedule_preempt_disabled+0x20/0x20
[ 459.195076][ C0] ? event_function+0x2e0/0x2e0
[ 459.195087][ C0] ? smp_call_function_single+0x490/0x490
[ 459.195103][ C0] preempt_schedule_thunk+0x16/0x18
[ 459.195116][ C0] ? smp_call_function_single+0x3f2/0x490
[ 459.195131][ C0] smp_call_function_single+0x3f7/0x490
[ 459.195146][ C0] ? event_function+0x2e0/0x2e0
[ 459.195158][ C0] ? flush_smp_call_function_from_idle+0x1b0/0x1b0
[ 459.195173][ C0] ? _raw_spin_unlock_irqrestore+0x5b/0x80
[ 459.195188][ C0] ? event_function+0x2e0/0x2e0
[ 459.195200][ C0] ? selinux_capable+0x2b6/0x3b0
[ 459.195214][ C0] ? memcpy+0x56/0x70
[ 459.195227][ C0] perf_install_in_context+0x4b8/0x760
[ 459.195241][ C0] ? exclusive_event_installable+0x230/0x230
[ 459.195253][ C0] ? add_event_to_ctx+0xd80/0xd80
[ 459.195266][ C0] ? __kasan_check_write+0x14/0x20
[ 459.195279][ C0] ? mutex_lock+0x9b/0x1c0
[ 459.195291][ C0] ? wait_for_completion_killable_timeout+0x10/0x10
[ 459.195306][ C0] ? capable+0x8a/0xe0
[ 459.195317][ C0] ? exclusive_event_installable+0x7c/0x230
[ 459.195330][ C0] ? perf_event__header_size+0x163/0x230
[ 459.195343][ C0] __se_sys_perf_event_open+0x12b1/0x1bb0
[ 459.195357][ C0] ? __x64_sys_perf_event_open+0xd0/0xd0
[ 459.195372][ C0] __x64_sys_perf_event_open+0xbf/0xd0
[ 459.195384][ C0] x64_sys_call+0x50d/0x9a0
[ 459.195397][ C0] do_syscall_64+0x4c/0xa0
[ 459.195411][ C0] ? clear_bhb_loop+0x50/0xa0
[ 459.195422][ C0] ? clear_bhb_loop+0x50/0xa0
[ 459.195434][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 459.195449][ C0] RIP: 0033:0x7f6709b0f819
[ 459.195462][ C0] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
[ 459.195472][ C0] RSP: 002b:00007ffdc4ab99f8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
[ 459.195485][ C0] RAX: ffffffffffffffda RBX: 00007f6709d88fa0 RCX: 00007f6709b0f819
[ 459.195495][ C0] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000100
[ 459.195505][ C0] RBP: 00007f6709ba5c91 R08: 0000000000000000 R09: 0000000000000000
[ 459.195513][ C0] R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
[ 459.195522][ C0] R13: 00007f6709d88fac R14: 00007f6709d88fa0 R15: 00007f6709d88fa0
[ 459.195534][ C0]
[ 480.641702][ T31] INFO: task kworker/u4:1:10 blocked for more than 144 seconds.
[ 480.649364][ T31] Not tainted syzkaller #0
[ 480.654735][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 480.663659][ T31] task:kworker/u4:1 state:D stack:24960 pid: 10 ppid: 2 flags:0x00004000
[ 480.672992][ T31] Workqueue: netns cleanup_net
[ 480.677756][ T31] Call Trace:
[ 480.681026][ T31]
[ 480.684281][ T31] __schedule+0xb6e/0x14c0
[ 480.688704][ T31] ? release_firmware_map_entry+0x190/0x190
[ 480.695220][ T31] ? kthread_data+0x50/0xc0
[ 480.699720][ T31] ? wq_worker_sleeping+0x60/0x200
[ 480.705183][ T31] schedule+0x11e/0x1e0
[ 480.709337][ T31] schedule_timeout+0xba/0x340
[ 480.714270][ T31] ? console_conditional_schedule+0x30/0x30
[ 480.720168][ T31] ? generic_exec_single+0x236/0x3a0
[ 480.725689][ T31] ? __prepare_to_swait+0xa8/0x130
[ 480.730803][ T31] wait_for_common+0x277/0x440
[ 480.735761][ T31] ? wait_for_completion+0x20/0x20
[ 480.740872][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 480.747705][ T31] ? do_softirq+0xe9/0x130
[ 480.752392][ T31] wait_for_completion+0x18/0x20
[ 480.757327][ T31] rcu_barrier+0x373/0x400
[ 480.761923][ T31] l2tp_exit_net+0x13c/0x1e0
[ 480.766509][ T31] ? pde_put+0x14e/0x1a0
[ 480.770743][ T31] ? l2tp_init_net+0x110/0x110
[ 480.775710][ T31] cleanup_net+0x593/0xae0
[ 480.780127][ T31] ? ops_init+0x4a0/0x4a0
[ 480.784670][ T31] process_one_work+0x6be/0xba0
[ 480.789522][ T31] worker_thread+0xa59/0x1200
[ 480.794346][ T31] kthread+0x411/0x500
[ 480.798408][ T31] ? worker_clr_flags+0x190/0x190
[ 480.803646][ T31] ? kthread_blkcg+0xd0/0xd0
[ 480.808243][ T31] ret_from_fork+0x1f/0x30
[ 480.812843][ T31]
[ 480.815874][ T31] INFO: task kworker/1:1:42 blocked for more than 124 seconds.
[ 480.823573][ T31] Not tainted syzkaller #0
[ 480.828494][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 480.837305][ T31] task:kworker/1:1 state:D stack:24448 pid: 42 ppid: 2 flags:0x00004000
[ 480.846654][ T31] Workqueue: ipv6_addrconf addrconf_dad_work
[ 480.852759][ T31] Call Trace:
[ 480.856153][ T31]
[ 480.859105][ T31] __schedule+0xb6e/0x14c0
[ 480.863721][ T31] ? release_firmware_map_entry+0x190/0x190
[ 480.869610][ T31] ? __mutex_add_waiter+0xcc/0x280
[ 480.874873][ T31] ? _raw_spin_unlock_irq+0x4e/0x70
[ 480.880071][ T31] ? wq_worker_sleeping+0x196/0x200
[ 480.885450][ T31] schedule+0x11e/0x1e0
[ 480.889601][ T31] schedule_preempt_disabled+0x13/0x20
[ 480.895172][ T31] __mutex_lock+0x81f/0x12d0
[ 480.899762][ T31] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 480.906681][ T31] ? kvm_sched_clock_read+0x18/0x40
[ 480.911977][ T31] ? sched_clock+0x9/0x10
[ 480.916303][ T31] ? sched_clock_cpu+0x18/0x3c0
[ 480.921154][ T31] ? raw_spin_rq_lock_nested+0x24/0x30
[ 480.926877][ T31] ? sched_balance_newidle+0x879/0xc60
[ 480.932452][ T31] __mutex_lock_slowpath+0xe/0x10
[ 480.937561][ T31] mutex_lock+0x112/0x1c0
[ 480.942063][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 480.948910][ T31] ? __this_cpu_preempt_check+0x13/0x20
[ 480.954794][ T31] ? __perf_event_task_sched_in+0x213/0x290
[ 480.960794][ T31] rtnl_lock+0x15/0x20
[ 480.965161][ T31] addrconf_dad_work+0xca/0x1560
[ 480.970102][ T31] ? perf_sched_cb_inc+0x240/0x240
[ 480.975366][ T31] ? finish_task_switch+0x16b/0x780
[ 480.980561][ T31] ? ipv6_get_saddr_eval+0xf70/0xf70
[ 480.986011][ T31] ? __switch_to_asm+0x3a/0x60
[ 480.990791][ T31] ? __schedule+0xb76/0x14c0
[ 480.995542][ T31] process_one_work+0x6be/0xba0
[ 481.000392][ T31] worker_thread+0xa59/0x1200
[ 481.005344][ T31] ? _raw_spin_lock_irqsave+0xc2/0x130
[ 481.010808][ T31] kthread+0x411/0x500
[ 481.015278][ T31] ? worker_clr_flags+0x190/0x190
[ 481.020303][ T31] ? kthread_blkcg+0xd0/0xd0
[ 481.025065][ T31] ret_from_fork+0x1f/0x30
[ 481.029480][ T31]
[ 481.032654][ T31] INFO: task kworker/u4:3:317 blocked for more than 124 seconds.
[ 481.040798][ T31] Not tainted syzkaller #0
[ 481.047303][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 481.056097][ T31] task:kworker/u4:3 state:D stack:21248 pid: 317 ppid: 2 flags:0x00004000
[ 481.065441][ T31] Workqueue: events_unbound linkwatch_event
[ 481.071461][ T31] Call Trace:
[ 481.074898][ T31]
[ 481.077825][ T31] __schedule+0xb6e/0x14c0
[ 481.082406][ T31] ? release_firmware_map_entry+0x190/0x190
[ 481.088302][ T31] ? kthread_data+0x50/0xc0
[ 481.092942][ T31] ? wq_worker_sleeping+0x60/0x200
[ 481.098050][ T31] schedule+0x11e/0x1e0
[ 481.102329][ T31] synchronize_rcu_expedited+0x4b6/0x640
[ 481.108053][ T31] ? synchronize_rcu+0x140/0x140
[ 481.113169][ T31] ? kmem_cache_free+0x100/0x320
[ 481.118161][ T31] ? rcu_exp_handler+0x370/0x370
[ 481.123237][ T31] ? __kasan_check_write+0x14/0x20
[ 481.128341][ T31] ? __this_cpu_preempt_check+0x13/0x20
[ 481.134029][ T31] ? io_schedule+0xe0/0xe0
[ 481.138637][ T31] ? _raw_spin_lock+0x94/0xf0
[ 481.143485][ T31] ? __kasan_check_read+0x11/0x20
[ 481.148505][ T31] synchronize_net+0x2d/0x40
[ 481.153236][ T31] dev_deactivate_many+0x690/0xb90
[ 481.158354][ T31] dev_deactivate+0x114/0x1b0
[ 481.163291][ T31] ? dev_reset_queue+0x130/0x130
[ 481.168331][ T31] ? veth_set_features+0x2d0/0x2d0
[ 481.173826][ T31] ? _raw_write_unlock+0x2b/0x60
[ 481.178858][ T31] linkwatch_do_dev+0x10d/0x160
[ 481.183851][ T31] __linkwatch_run_queue+0x4b1/0x7c0
[ 481.189134][ T31] ? linkwatch_run_queue+0x20/0x20
[ 481.194422][ T31] ? __schedule+0xb76/0x14c0
[ 481.199006][ T31] linkwatch_event+0x4c/0x60
[ 481.203860][ T31] process_one_work+0x6be/0xba0
[ 481.208712][ T31] worker_thread+0xa59/0x1200
[ 481.213529][ T31] ? _raw_spin_lock_irqsave+0xc2/0x130
[ 481.218985][ T31] ? __kthread_parkme+0xac/0x200
[ 481.224059][ T31] kthread+0x411/0x500
[ 481.228122][ T31] ? worker_clr_flags+0x190/0x190
[ 481.233464][ T31] ? kthread_blkcg+0xd0/0xd0
[ 481.238063][ T31] ret_from_fork+0x1f/0x30
[ 481.242743][ T31]
[ 481.245764][ T31] INFO: task syz-executor:366 blocked for more than 124 seconds.
[ 481.253714][ T31] Not tainted syzkaller #0
[ 481.258643][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 481.267533][ T31] task:syz-executor state:D stack:21952 pid: 366 ppid: 1 flags:0x00004004
[ 481.276871][ T31] Call Trace:
[ 481.280145][ T31]
[ 481.283270][ T31] __schedule+0xb6e/0x14c0
[ 481.287693][ T31] ? release_firmware_map_entry+0x190/0x190
[ 481.293749][ T31] ? __mutex_add_waiter+0x180/0x280
[ 481.299031][ T31] ? __kasan_check_write+0x14/0x20
[ 481.304310][ T31] ? __ww_mutex_check_waiters+0x350/0x350
[ 481.310032][ T31] schedule+0x11e/0x1e0
[ 481.314383][ T31] schedule_preempt_disabled+0x13/0x20
[ 481.319848][ T31] __mutex_lock+0x81f/0x12d0
[ 481.324609][ T31] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 481.331367][ T31] ? selinux_capable+0x2b6/0x3b0
[ 481.336890][ T31] ? selinux_capset+0xf0/0xf0
[ 481.342088][ T31] ? is_bpf_text_address+0x177/0x190
[ 481.347528][ T31] ? cap_capable+0x1aa/0x230
[ 481.352320][ T31] __mutex_lock_slowpath+0xe/0x10
[ 481.357361][ T31] mutex_lock+0x112/0x1c0
[ 481.361939][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 481.368524][ T31] ? ns_capable+0x8c/0xf0
[ 481.373036][ T31] ? netlink_net_capable+0x125/0x160
[ 481.378323][ T31] rtnetlink_rcv_msg+0x579/0xce0
[ 481.383458][ T31] ? rtnetlink_bind+0x80/0x80
[ 481.388134][ T31] ? avc_has_perm_noaudit+0x391/0x490
[ 481.393670][ T31] ? memcpy+0x56/0x70
[ 481.397652][ T31] ? avc_has_perm_noaudit+0x30b/0x490
[ 481.403274][ T31] ? arch_stack_walk+0xee/0x140
[ 481.408130][ T31] ? avc_denied+0x1b0/0x1b0
[ 481.412874][ T31] ? stack_trace_save+0xa6/0xf0
[ 481.417722][ T31] ? avc_has_perm+0x163/0x250
[ 481.422638][ T31] ? avc_has_perm_noaudit+0x490/0x490
[ 481.428014][ T31] ? do_syscall_64+0x4c/0xa0
[ 481.432805][ T31] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 481.438177][ T31] netlink_rcv_skb+0x1f5/0x440
[ 481.443454][ T31] ? rtnetlink_bind+0x80/0x80
[ 481.448133][ T31] ? netlink_ack+0xb50/0xb50
[ 481.452916][ T31] ? __netlink_lookup+0x387/0x3b0
[ 481.457945][ T31] rtnetlink_rcv+0x1c/0x20
[ 481.462520][ T31] netlink_unicast+0x876/0xa40
[ 481.467298][ T31] netlink_sendmsg+0x879/0xb80
[ 481.472251][ T31] ? netlink_getsockopt+0x530/0x530
[ 481.477445][ T31] ? security_socket_sendmsg+0x82/0xa0
[ 481.483063][ T31] __sys_sendto+0x46d/0x620
[ 481.487568][ T31] ? __ia32_sys_getpeername+0x90/0x90
[ 481.493149][ T31] ? __fput+0x63f/0x8b0
[ 481.497314][ T31] ? unlock_page_memcg+0x130/0x130
[ 481.502849][ T31] ? ____fput+0x15/0x20
[ 481.507024][ T31] __x64_sys_sendto+0xe5/0x100
[ 481.511987][ T31] x64_sys_call+0x178/0x9a0
[ 481.516659][ T31] do_syscall_64+0x4c/0xa0
[ 481.521176][ T31] ? clear_bhb_loop+0x50/0xa0
[ 481.526084][ T31] ? clear_bhb_loop+0x50/0xa0
[ 481.530799][ T31] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 481.536868][ T31] RIP: 0033:0x7fb45eec7997
[ 481.541275][ T31] RSP: 002b:00007ffd303f14d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 481.549852][ T31] RAX: ffffffffffffffda RBX: 00005555948b8500 RCX: 00007fb45eec7997
[ 481.557931][ T31] RDX: 0000000000000028 RSI: 00007fb45fcb4670 RDI: 0000000000000003
[ 481.566038][ T31] RBP: 0000000000000001 R08: 00007ffd303f1534 R09: 000000000000000c
[ 481.574110][ T31] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 481.582431][ T31] R13: 0000000000000000 R14: 00007fb45fcb4670 R15: 0000000000000000
[ 481.590409][ T31]
[ 481.593710][ T31] NMI backtrace for cpu 1
[ 481.598028][ T31] CPU: 1 PID: 31 Comm: khungtaskd Not tainted syzkaller #0
[ 481.605215][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 481.615348][ T31] Call Trace:
[ 481.618635][ T31]
[ 481.621559][ T31] __dump_stack+0x21/0x30
[ 481.625993][ T31] dump_stack_lvl+0x110/0x170
[ 481.630761][ T31] ? show_regs_print_info+0x20/0x20
[ 481.635968][ T31] dump_stack+0x15/0x20
[ 481.640114][ T31] nmi_cpu_backtrace+0x2af/0x2c0
[ 481.645046][ T31] ? rcu_read_unlock_special+0xb2/0x420
[ 481.650590][ T31] ? nmi_trigger_cpumask_backtrace+0x240/0x240
[ 481.656748][ T31] ? __rcu_read_unlock+0xa0/0xa0
[ 481.661677][ T31] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 481.667735][ T31] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 481.673804][ T31] nmi_trigger_cpumask_backtrace+0x138/0x240
[ 481.679779][ T31] arch_trigger_cpumask_backtrace+0x10/0x20
[ 481.685704][ T31] watchdog+0xd92/0xee0
[ 481.689863][ T31] ? hungtask_pm_notify+0x50/0x50
[ 481.694878][ T31] ? __kasan_check_read+0x11/0x20
[ 481.699895][ T31] ? __kthread_parkme+0xac/0x200
[ 481.704844][ T31] kthread+0x411/0x500
[ 481.708912][ T31] ? hungtask_pm_notify+0x50/0x50
[ 481.713936][ T31] ? kthread_blkcg+0xd0/0xd0
[ 481.718517][ T31] ret_from_fork+0x1f/0x30
[ 481.723010][ T31]
[ 481.726083][ T31] Sending NMI from CPU 1 to CPUs 0:
[ 481.731277][ C0] NMI backtrace for cpu 0
[ 481.731285][ C0] CPU: 0 PID: 361 Comm: syz.2.18 Not tainted syzkaller #0
[ 481.731299][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 481.731307][ C0] RIP: 0010:check_preemption_disabled+0x6/0x120
[ 481.731326][ C0] Code: c3 00 00 cc 55 48 89 e5 48 c7 c7 20 9c 63 85 48 c7 c6 60 9c 63 85 e8 09 00 00 00 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 <41> 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 45 d8
[ 481.731338][ C0] RSP: 0018:ffffc900000077f8 EFLAGS: 00000046
[ 481.731350][ C0] RAX: 1ffffffff0d332d7 RBX: 1ffff92000000f08 RCX: ffff88810e0362c0
[ 481.731366][ C0] RDX: 0000000000010100 RSI: ffffffff85639c60 RDI: ffffffff85639c20
[ 481.731376][ C0] RBP: ffffc90000007800 R08: ffffffff86e947ef R09: 1ffffffff0dd28fd
[ 481.731386][ C0] R10: dffffc0000000000 R11: fffffbfff0dd28fe R12: ffff8881100a3c18
[ 481.731397][ C0] R13: dffffc0000000000 R14: ffffffff869996b8 R15: 0000607e08c0c7c8
[ 481.731407][ C0] FS: 000055557ce00500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[ 481.731420][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 481.731429][ C0] CR2: 00007ff0503fbda0 CR3: 0000000122466000 CR4: 00000000003506b0
[ 481.731442][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 481.731450][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 481.731458][ C0] Call Trace:
[ 481.731462][ C0]
[ 481.731466][ C0] debug_smp_processor_id+0x17/0x20
[ 481.731479][ C0] perf_trace_msr_trace_class+0xc6/0x360
[ 481.731494][ C0] ? trace_event_raw_event_msr_trace_class+0x2b0/0x2b0
[ 481.731508][ C0] ? __hrtimer_run_queues+0x85e/0x8c0
[ 481.731526][ C0] do_trace_write_msr+0xb4/0x100
[ 481.731538][ C0] native_apic_msr_write+0x46/0x50
[ 481.731554][ C0] lapic_next_event+0x5f/0x70
[ 481.731567][ C0] clockevents_program_event+0x1c7/0x300
[ 481.731581][ C0] tick_program_event+0xa3/0x120
[ 481.731595][ C0] hrtimer_interrupt+0x501/0x8c0
[ 481.731613][ C0] __sysvec_apic_timer_interrupt+0xfa/0x3e0
[ 481.731626][ C0] sysvec_apic_timer_interrupt+0x53/0xc0
[ 481.731639][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 481.731656][ C0] RIP: 0010:ipv6_get_lladdr+0xac/0x200
[ 481.731672][ C0] Code: e8 39 b3 81 fd 4d 8b 24 24 49 39 dc 0f 84 03 01 00 00 4c 89 6d d0 4d 8d ac 24 3a ff ff ff 4c 89 e8 48 c1 e8 03 42 0f b6 04 30 <84> c0 0f 85 9f 00 00 00 45 0f b7 6d 00 bf 20 00 00 00 44 89 ee e8
[ 481.731683][ C0] RSP: 0018:ffffc90000007c18 EFLAGS: 00000a06
[ 481.731694][ C0] RAX: 0000000000000000 RBX: ffff88810fcc2008 RCX: ffffffff84b439df
[ 481.731703][ C0] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88810fcc2368
[ 481.731712][ C0] RBP: ffffc90000007c50 R08: ffff88810fcc236b R09: 1ffff11021f9846d
[ 481.731722][ C0] R10: dffffc0000000000 R11: ffffed1021f9846e R12: ffff88812bfca8f8
[ 481.731732][ C0] R13: ffff88812bfca832 R14: dffffc0000000000 R15: 0000000000000040
[ 481.731743][ C0] ? _raw_read_lock_bh+0x1f/0x40
[ 481.731758][ C0] ? ipv6_get_lladdr+0x68/0x200
[ 481.731773][ C0] addrconf_rs_timer+0x270/0x610
[ 481.731785][ C0] ? __queue_work+0x913/0xc60
[ 481.731800][ C0] ? addrconf_disable_policy_idev+0x360/0x360
[ 481.731815][ C0] ? addrconf_disable_policy_idev+0x360/0x360
[ 481.731828][ C0] call_timer_fn+0x38/0x290
[ 481.731842][ C0] ? addrconf_disable_policy_idev+0x360/0x360
[ 481.731856][ C0] __run_timers+0x650/0x9e0
[ 481.731872][ C0] ? calc_index+0x200/0x200
[ 481.731885][ C0] ? __irq_exit_rcu+0x5e/0xf0
[ 481.731900][ C0] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 481.731918][ C0] run_timer_softirq+0x6a/0xf0
[ 481.731932][ C0] handle_softirqs+0x250/0x560
[ 481.731947][ C0] __irq_exit_rcu+0x52/0xf0
[ 481.731961][ C0] irq_exit_rcu+0x9/0x10
[ 481.731974][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0
[ 481.731986][ C0]
[ 481.731990][ C0]
[ 481.731994][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 481.732010][ C0] RIP: 0010:finish_task_switch+0x173/0x780
[ 481.732026][ C0] Code: 80 3c 2b 00 74 08 4c 89 f7 e8 d9 64 60 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 15 a5 6b 03 fb 49 8d 9f 38 0b 00 00 <48> 89 d8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df 42 0f b6 04 28
[ 481.732037][ C0] RSP: 0018:ffffc90000a77880 EFLAGS: 00000282
[ 481.732055][ C0] RAX: 0000000080000001 RBX: ffff88810e036df8 RCX: 0000000000000000
[ 481.732065][ C0] RDX: 0000000040000000 RSI: 0000000000000000 RDI: 00000000ffffffff
[ 481.732073][ C0] RBP: ffffc90000a778d0 R08: ffffffff86e94f93 R09: 1ffffffff0dd29f2
[ 481.732084][ C0] R10: dffffc0000000000 R11: fffffbfff0dd29f3 R12: ffff8881f70378c0
[ 481.732094][ C0] R13: 0000000000000000 R14: ffff8881f7038408 R15: ffff88810e0362c0
[ 481.732106][ C0] ? __switch_to_asm+0x3a/0x60
[ 481.732119][ C0] __schedule+0xb76/0x14c0
[ 481.732133][ C0] ? release_firmware_map_entry+0x190/0x190
[ 481.732146][ C0] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 481.732162][ C0] ? preempt_schedule+0xbc/0xd0
[ 481.732175][ C0] preempt_schedule_common+0x9b/0xf0
[ 481.732188][ C0] preempt_schedule+0xbc/0xd0
[ 481.732199][ C0] ? schedule_preempt_disabled+0x20/0x20
[ 481.732212][ C0] ? event_function+0x2e0/0x2e0
[ 481.732225][ C0] ? smp_call_function_single+0x490/0x490
[ 481.732241][ C0] preempt_schedule_thunk+0x16/0x18
[ 481.732254][ C0] ? smp_call_function_single+0x3f2/0x490
[ 481.732269][ C0] smp_call_function_single+0x3f7/0x490
[ 481.732284][ C0] ? event_function+0x2e0/0x2e0
[ 481.732296][ C0] ? flush_smp_call_function_from_idle+0x1b0/0x1b0
[ 481.732311][ C0] ? _raw_spin_unlock_irqrestore+0x5b/0x80
[ 481.732326][ C0] ? event_function+0x2e0/0x2e0
[ 481.732338][ C0] ? selinux_capable+0x2b6/0x3b0
[ 481.732352][ C0] ? memcpy+0x56/0x70
[ 481.732373][ C0] perf_install_in_context+0x4b8/0x760
[ 481.732386][ C0] ? exclusive_event_installable+0x230/0x230
[ 481.732399][ C0] ? add_event_to_ctx+0xd80/0xd80
[ 481.732412][ C0] ? __kasan_check_write+0x14/0x20
[ 481.732425][ C0] ? mutex_lock+0x9b/0x1c0
[ 481.732437][ C0] ? wait_for_completion_killable_timeout+0x10/0x10
[ 481.732451][ C0] ? capable+0x8a/0xe0
[ 481.732463][ C0] ? exclusive_event_installable+0x7c/0x230
[ 481.732475][ C0] ? perf_event__header_size+0x163/0x230
[ 481.732489][ C0] __se_sys_perf_event_open+0x12b1/0x1bb0
[ 481.732502][ C0] ? __x64_sys_perf_event_open+0xd0/0xd0
[ 481.732517][ C0] __x64_sys_perf_event_open+0xbf/0xd0
[ 481.732530][ C0] x64_sys_call+0x50d/0x9a0
[ 481.732543][ C0] do_syscall_64+0x4c/0xa0
[ 481.732557][ C0] ? clear_bhb_loop+0x50/0xa0
[ 481.732568][ C0] ? clear_bhb_loop+0x50/0xa0
[ 481.732580][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 481.732595][ C0] RIP: 0033:0x7f6709b0f819
[ 481.732607][ C0] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
[ 481.732618][ C0] RSP: 002b:00007ffdc4ab99f8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
[ 481.732631][ C0] RAX: ffffffffffffffda RBX: 00007f6709d88fa0 RCX: 00007f6709b0f819
[ 481.732641][ C0] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000100
[ 481.732651][ C0] RBP: 00007f6709ba5c91 R08: 0000000000000000 R09: 0000000000000000
[ 481.732659][ C0] R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
[ 481.732668][ C0] R13: 00007f6709d88fac R14: 00007f6709d88fa0 R15: 00007f6709d88fa0
[ 481.732680][ C0]
[ 503.041728][ T31] INFO: task kworker/u4:1:10 blocked for more than 166 seconds.
[ 503.049388][ T31] Not tainted syzkaller #0
[ 503.054780][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 503.063606][ T31] task:kworker/u4:1 state:D stack:24960 pid: 10 ppid: 2 flags:0x00004000
[ 503.072972][ T31] Workqueue: netns cleanup_net
[ 503.077743][ T31] Call Trace:
[ 503.081011][ T31]
[ 503.084209][ T31] __schedule+0xb6e/0x14c0
[ 503.088627][ T31] ? release_firmware_map_entry+0x190/0x190
[ 503.094739][ T31] ? kthread_data+0x50/0xc0
[ 503.099252][ T31] ? wq_worker_sleeping+0x60/0x200
[ 503.104680][ T31] schedule+0x11e/0x1e0
[ 503.108844][ T31] schedule_timeout+0xba/0x340
[ 503.113766][ T31] ? console_conditional_schedule+0x30/0x30
[ 503.119659][ T31] ? generic_exec_single+0x236/0x3a0
[ 503.125360][ T31] ? __prepare_to_swait+0xa8/0x130
[ 503.130491][ T31] wait_for_common+0x277/0x440
[ 503.135483][ T31] ? wait_for_completion+0x20/0x20
[ 503.140596][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 503.147437][ T31] ? do_softirq+0xe9/0x130
[ 503.151999][ T31] wait_for_completion+0x18/0x20
[ 503.156932][ T31] rcu_barrier+0x373/0x400
[ 503.161342][ T31] l2tp_exit_net+0x13c/0x1e0
[ 503.166135][ T31] ? pde_put+0x14e/0x1a0
[ 503.170378][ T31] ? l2tp_init_net+0x110/0x110
[ 503.175273][ T31] cleanup_net+0x593/0xae0
[ 503.179685][ T31] ? ops_init+0x4a0/0x4a0
[ 503.184170][ T31] process_one_work+0x6be/0xba0
[ 503.189035][ T31] worker_thread+0xa59/0x1200
[ 503.193875][ T31] kthread+0x411/0x500
[ 503.197944][ T31] ? worker_clr_flags+0x190/0x190
[ 503.203125][ T31] ? kthread_blkcg+0xd0/0xd0
[ 503.207713][ T31] ret_from_fork+0x1f/0x30
[ 503.212281][ T31]
[ 503.215309][ T31] INFO: task kworker/1:1:42 blocked for more than 146 seconds.
[ 503.223132][ T31] Not tainted syzkaller #0
[ 503.228176][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 503.237024][ T31] task:kworker/1:1 state:D stack:24448 pid: 42 ppid: 2 flags:0x00004000
[ 503.246564][ T31] Workqueue: ipv6_addrconf addrconf_dad_work
[ 503.252928][ T31] Call Trace:
[ 503.256217][ T31]
[ 503.259140][ T31] __schedule+0xb6e/0x14c0
[ 503.263786][ T31] ? release_firmware_map_entry+0x190/0x190
[ 503.269683][ T31] ? __mutex_add_waiter+0xcc/0x280
[ 503.274942][ T31] ? _raw_spin_unlock_irq+0x4e/0x70
[ 503.280147][ T31] ? wq_worker_sleeping+0x196/0x200
[ 503.285609][ T31] schedule+0x11e/0x1e0
[ 503.289850][ T31] schedule_preempt_disabled+0x13/0x20
[ 503.295446][ T31] __mutex_lock+0x81f/0x12d0
[ 503.300123][ T31] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 503.307090][ T31] ? kvm_sched_clock_read+0x18/0x40
[ 503.312411][ T31] ? sched_clock+0x9/0x10
[ 503.316775][ T31] ? sched_clock_cpu+0x18/0x3c0
[ 503.321772][ T31] ? raw_spin_rq_lock_nested+0x24/0x30
[ 503.327239][ T31] ? sched_balance_newidle+0x879/0xc60
[ 503.332921][ T31] __mutex_lock_slowpath+0xe/0x10
[ 503.337946][ T31] mutex_lock+0x112/0x1c0
[ 503.342457][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 503.349138][ T31] ? __this_cpu_preempt_check+0x13/0x20
[ 503.354940][ T31] ? __perf_event_task_sched_in+0x213/0x290
[ 503.361363][ T31] rtnl_lock+0x15/0x20
[ 503.366527][ T31] addrconf_dad_work+0xca/0x1560
[ 503.371466][ T31] ? perf_sched_cb_inc+0x240/0x240
[ 503.376771][ T31] ? finish_task_switch+0x16b/0x780
[ 503.382083][ T31] ? ipv6_get_saddr_eval+0xf70/0xf70
[ 503.387363][ T31] ? __switch_to_asm+0x3a/0x60
[ 503.392377][ T31] ? __schedule+0xb76/0x14c0
[ 503.396987][ T31] process_one_work+0x6be/0xba0
[ 503.402031][ T31] worker_thread+0xa59/0x1200
[ 503.406708][ T31] ? _raw_spin_lock_irqsave+0xc2/0x130
[ 503.412708][ T31] kthread+0x411/0x500
[ 503.416802][ T31] ? worker_clr_flags+0x190/0x190
[ 503.422126][ T31] ? kthread_blkcg+0xd0/0xd0
[ 503.426775][ T31] ret_from_fork+0x1f/0x30
[ 503.431183][ T31]
[ 503.434442][ T31] INFO: task kworker/u4:3:317 blocked for more than 146 seconds.
[ 503.442357][ T31] Not tainted syzkaller #0
[ 503.447285][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 503.456124][ T31] task:kworker/u4:3 state:D stack:21248 pid: 317 ppid: 2 flags:0x00004000
[ 503.465472][ T31] Workqueue: events_unbound linkwatch_event
[ 503.471507][ T31] Call Trace:
[ 503.474929][ T31]
[ 503.477861][ T31] __schedule+0xb6e/0x14c0
[ 503.482453][ T31] ? release_firmware_map_entry+0x190/0x190
[ 503.488433][ T31] ? kthread_data+0x50/0xc0
[ 503.493203][ T31] ? wq_worker_sleeping+0x60/0x200
[ 503.498411][ T31] schedule+0x11e/0x1e0
[ 503.502750][ T31] synchronize_rcu_expedited+0x4b6/0x640
[ 503.508562][ T31] ? synchronize_rcu+0x140/0x140
[ 503.513859][ T31] ? kmem_cache_free+0x100/0x320
[ 503.518889][ T31] ? rcu_exp_handler+0x370/0x370
[ 503.524279][ T31] ? __kasan_check_write+0x14/0x20
[ 503.529417][ T31] ? __this_cpu_preempt_check+0x13/0x20
[ 503.535139][ T31] ? io_schedule+0xe0/0xe0
[ 503.539554][ T31] ? _raw_spin_lock+0x94/0xf0
[ 503.544392][ T31] ? __kasan_check_read+0x11/0x20
[ 503.549416][ T31] synchronize_net+0x2d/0x40
[ 503.554166][ T31] dev_deactivate_many+0x690/0xb90
[ 503.559282][ T31] dev_deactivate+0x114/0x1b0
[ 503.564554][ T31] ? dev_reset_queue+0x130/0x130
[ 503.569512][ T31] ? veth_set_features+0x2d0/0x2d0
[ 503.575239][ T31] ? _raw_write_unlock+0x2b/0x60
[ 503.580184][ T31] linkwatch_do_dev+0x10d/0x160
[ 503.585248][ T31] __linkwatch_run_queue+0x4b1/0x7c0
[ 503.590536][ T31] ? linkwatch_run_queue+0x20/0x20
[ 503.595819][ T31] ? __schedule+0xb76/0x14c0
[ 503.600410][ T31] linkwatch_event+0x4c/0x60
[ 503.605143][ T31] process_one_work+0x6be/0xba0
[ 503.609993][ T31] worker_thread+0xa59/0x1200
[ 503.614952][ T31] ? _raw_spin_lock_irqsave+0xc2/0x130
[ 503.620499][ T31] ? __kthread_parkme+0xac/0x200
[ 503.625806][ T31] kthread+0x411/0x500
[ 503.629875][ T31] ? worker_clr_flags+0x190/0x190
[ 503.635054][ T31] ? kthread_blkcg+0xd0/0xd0
[ 503.639640][ T31] ret_from_fork+0x1f/0x30
[ 503.644333][ T31]
[ 503.647362][ T31] INFO: task syz-executor:366 blocked for more than 147 seconds.
[ 503.655244][ T31] Not tainted syzkaller #0
[ 503.660181][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 503.669037][ T31] task:syz-executor state:D stack:21952 pid: 366 ppid: 1 flags:0x00004004
[ 503.678484][ T31] Call Trace:
[ 503.681965][ T31]
[ 503.684894][ T31] __schedule+0xb6e/0x14c0
[ 503.689348][ T31] ? release_firmware_map_entry+0x190/0x190
[ 503.695553][ T31] ? __mutex_add_waiter+0x180/0x280
[ 503.700778][ T31] ? __kasan_check_write+0x14/0x20
[ 503.706180][ T31] ? __ww_mutex_check_waiters+0x350/0x350
[ 503.712269][ T31] schedule+0x11e/0x1e0
[ 503.716464][ T31] schedule_preempt_disabled+0x13/0x20
[ 503.722189][ T31] __mutex_lock+0x81f/0x12d0
[ 503.726782][ T31] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 503.733721][ T31] ? selinux_capable+0x2b6/0x3b0
[ 503.738658][ T31] ? selinux_capset+0xf0/0xf0
[ 503.743496][ T31] ? is_bpf_text_address+0x177/0x190
[ 503.748935][ T31] ? cap_capable+0x1aa/0x230
[ 503.753847][ T31] __mutex_lock_slowpath+0xe/0x10
[ 503.758967][ T31] mutex_lock+0x112/0x1c0
[ 503.763569][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 503.770157][ T31] ? ns_capable+0x8c/0xf0
[ 503.774662][ T31] ? netlink_net_capable+0x125/0x160
[ 503.779948][ T31] rtnetlink_rcv_msg+0x579/0xce0
[ 503.785068][ T31] ? rtnetlink_bind+0x80/0x80
[ 503.789743][ T31] ? avc_has_perm_noaudit+0x391/0x490
[ 503.795385][ T31] ? memcpy+0x56/0x70
[ 503.799367][ T31] ? avc_has_perm_noaudit+0x30b/0x490
[ 503.804895][ T31] ? arch_stack_walk+0xee/0x140
[ 503.809747][ T31] ? avc_denied+0x1b0/0x1b0
[ 503.814446][ T31] ? stack_trace_save+0xa6/0xf0
[ 503.819296][ T31] ? avc_has_perm+0x163/0x250
[ 503.824168][ T31] ? avc_has_perm_noaudit+0x490/0x490
[ 503.829543][ T31] ? do_syscall_64+0x4c/0xa0
[ 503.834363][ T31] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 503.839738][ T31] netlink_rcv_skb+0x1f5/0x440
[ 503.844695][ T31] ? rtnetlink_bind+0x80/0x80
[ 503.849375][ T31] ? netlink_ack+0xb50/0xb50
[ 503.854109][ T31] ? __netlink_lookup+0x387/0x3b0
[ 503.859129][ T31] rtnetlink_rcv+0x1c/0x20
[ 503.863707][ T31] netlink_unicast+0x876/0xa40
[ 503.868475][ T31] netlink_sendmsg+0x879/0xb80
[ 503.873686][ T31] ? netlink_getsockopt+0x530/0x530
[ 503.878889][ T31] ? security_socket_sendmsg+0x82/0xa0
[ 503.884574][ T31] __sys_sendto+0x46d/0x620
[ 503.889086][ T31] ? __ia32_sys_getpeername+0x90/0x90
[ 503.894707][ T31] ? __fput+0x63f/0x8b0
[ 503.898862][ T31] ? unlock_page_memcg+0x130/0x130
[ 503.904248][ T31] ? ____fput+0x15/0x20
[ 503.908429][ T31] __x64_sys_sendto+0xe5/0x100
[ 503.913353][ T31] x64_sys_call+0x178/0x9a0
[ 503.917856][ T31] do_syscall_64+0x4c/0xa0
[ 503.922921][ T31] ? clear_bhb_loop+0x50/0xa0
[ 503.927624][ T31] ? clear_bhb_loop+0x50/0xa0
[ 503.932500][ T31] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 503.938493][ T31] RIP: 0033:0x7fb45eec7997
[ 503.943090][ T31] RSP: 002b:00007ffd303f14d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 503.951593][ T31] RAX: ffffffffffffffda RBX: 00005555948b8500 RCX: 00007fb45eec7997
[ 503.959824][ T31] RDX: 0000000000000028 RSI: 00007fb45fcb4670 RDI: 0000000000000003
[ 503.968051][ T31] RBP: 0000000000000001 R08: 00007ffd303f1534 R09: 000000000000000c
[ 503.976142][ T31] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 503.984236][ T31] R13: 0000000000000000 R14: 00007fb45fcb4670 R15: 0000000000000000
[ 503.992460][ T31]
[ 503.995576][ T31] NMI backtrace for cpu 1
[ 503.999986][ T31] CPU: 1 PID: 31 Comm: khungtaskd Not tainted syzkaller #0
[ 504.007261][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 504.017405][ T31] Call Trace:
[ 504.020687][ T31]
[ 504.023607][ T31] __dump_stack+0x21/0x30
[ 504.027936][ T31] dump_stack_lvl+0x110/0x170
[ 504.032692][ T31] ? show_regs_print_info+0x20/0x20
[ 504.037885][ T31] dump_stack+0x15/0x20
[ 504.042041][ T31] nmi_cpu_backtrace+0x2af/0x2c0
[ 504.046969][ T31] ? rcu_read_unlock_special+0xb2/0x420
[ 504.053006][ T31] ? nmi_trigger_cpumask_backtrace+0x240/0x240
[ 504.059171][ T31] ? __rcu_read_unlock+0xa0/0xa0
[ 504.064107][ T31] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 504.070177][ T31] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 504.076328][ T31] nmi_trigger_cpumask_backtrace+0x138/0x240
[ 504.082346][ T31] arch_trigger_cpumask_backtrace+0x10/0x20
[ 504.088332][ T31] watchdog+0xd92/0xee0
[ 504.092493][ T31] ? hungtask_pm_notify+0x50/0x50
[ 504.097600][ T31] ? __kasan_check_read+0x11/0x20
[ 504.102619][ T31] ? __kthread_parkme+0xac/0x200
[ 504.107701][ T31] kthread+0x411/0x500
[ 504.111761][ T31] ? hungtask_pm_notify+0x50/0x50
[ 504.116777][ T31] ? kthread_blkcg+0xd0/0xd0
[ 504.121373][ T31] ret_from_fork+0x1f/0x30
[ 504.125791][ T31]
[ 504.129056][ T31] Sending NMI from CPU 1 to CPUs 0:
[ 504.134274][ C0] NMI backtrace for cpu 0
[ 504.134284][ C0] CPU: 0 PID: 361 Comm: syz.2.18 Not tainted syzkaller #0
[ 504.134298][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 504.134306][ C0] RIP: 0010:perf_misc_flags+0x47/0x130
[ 504.134326][ C0] Code: 48 c7 c0 60 ac 0f 87 48 c1 e8 03 42 80 3c 20 00 74 0c 48 c7 c7 60 ac 0f 87 e8 b5 e7 a7 00 4c 8b 35 7e 9e 0e 06 4d 85 f6 74 68 <4c> 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 93 e7 a7 00
[ 504.134338][ C0] RSP: 0018:ffffc900000069d0 EFLAGS: 00000082
[ 504.134351][ C0] RAX: 1ffffffff0e1f58c RBX: ffff8881f70343c0 RCX: ffff88810e0362c0
[ 504.134362][ C0] RDX: 0000000000010100 RSI: ffffc90000006d40 RDI: ffff8881f70343c0
[ 504.134372][ C0] RBP: ffffc900000069f0 R08: ffffc90000006b57 R09: ffffc90000006b20
[ 504.134382][ C0] R10: dffffc0000000000 R11: fffff52000000d6b R12: dffffc0000000000
[ 504.134392][ C0] R13: ffffc90000006b86 R14: ffffffff8667cfe0 R15: ffffc90000006b84
[ 504.134403][ C0] FS: 000055557ce00500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[ 504.134415][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 504.134425][ C0] CR2: 00007ff0503fbda0 CR3: 0000000122466000 CR4: 00000000003506b0
[ 504.134437][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 504.134445][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 504.134454][ C0] Call Trace:
[ 504.134458][ C0]
[ 504.134463][ C0] perf_prepare_sample+0x132/0x1a40
[ 504.134481][ C0] ? perf_callchain+0x1c0/0x1c0
[ 504.134497][ C0] perf_event_output_forward+0xd1/0x1a0
[ 504.134512][ C0] ? perf_get_page_size+0x3a0/0x3a0
[ 504.134527][ C0] ? perf_output_begin_forward+0x663/0x8f0
[ 504.134543][ C0] ? __this_cpu_preempt_check+0x13/0x20
[ 504.134557][ C0] ? __perf_event_account_interrupt+0x1a4/0x2c0
[ 504.134573][ C0] __perf_event_overflow+0x1f9/0x380
[ 504.134589][ C0] perf_swevent_event+0x4b2/0x530
[ 504.134604][ C0] perf_tp_event+0x76c/0xa30
[ 504.134620][ C0] ? perf_trace_run_bpf_submit+0x1c0/0x1c0
[ 504.134645][ C0] ? cpu_clock_event_read+0x50/0x50
[ 504.134661][ C0] perf_trace_run_bpf_submit+0xf3/0x1c0
[ 504.134678][ C0] perf_trace_msr_trace_class+0x2b0/0x360
[ 504.134692][ C0] ? trace_event_raw_event_msr_trace_class+0x2b0/0x2b0
[ 504.134706][ C0] ? __hrtimer_run_queues+0x85e/0x8c0
[ 504.134724][ C0] do_trace_write_msr+0xb4/0x100
[ 504.134736][ C0] native_apic_msr_write+0x46/0x50
[ 504.134752][ C0] lapic_next_event+0x5f/0x70
[ 504.134765][ C0] clockevents_program_event+0x1c7/0x300
[ 504.134779][ C0] tick_program_event+0xa3/0x120
[ 504.134793][ C0] hrtimer_interrupt+0x501/0x8c0
[ 504.134811][ C0] __sysvec_apic_timer_interrupt+0xfa/0x3e0
[ 504.134825][ C0] sysvec_apic_timer_interrupt+0x53/0xc0
[ 504.134838][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 504.134855][ C0] RIP: 0010:__dev_queue_xmit+0x8c4/0x2da0
[ 504.134870][ C0] Code: 0f 1f 44 00 00 e8 fc ef a8 fd 4d 89 ee 49 c1 ee 03 48 b8 00 00 00 00 00 fc ff df 41 80 3c 06 00 74 08 4c 89 ef e8 8c 1e e8 fd <49> 83 7d 00 00 74 53 48 b9 00 00 00 00 00 fc ff df 48 8b 44 24 70
[ 504.134881][ C0] RSP: 0018:ffffc900000073c0 EFLAGS: 00010246
[ 504.134892][ C0] RAX: dffffc0000000000 RBX: ffff88810fda0008 RCX: ffff88810e0362c0
[ 504.134902][ C0] RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
[ 504.134910][ C0] RBP: ffffc90000007590 R08: 0000000000000000 R09: 0000000000000002
[ 504.134919][ C0] R10: 0000000000000003 R11: 0000000000000100 R12: ffff88810fda0000
[ 504.134928][ C0] R13: ffff88810f214000 R14: 1ffff11021e42800 R15: ffff88810dc36140
[ 504.134943][ C0] ? dev_queue_xmit+0x20/0x20
[ 504.134957][ C0] ? __kasan_check_write+0x14/0x20
[ 504.134971][ C0] ? _raw_write_lock_bh+0x94/0xf0
[ 504.134986][ C0] ? _raw_write_lock_irq+0xf0/0xf0
[ 504.135000][ C0] ? eth_header+0x123/0x210
[ 504.135015][ C0] ? memcpy+0x56/0x70
[ 504.135028][ C0] dev_queue_xmit+0x17/0x20
[ 504.135041][ C0] neigh_resolve_output+0x6cf/0x770
[ 504.135057][ C0] ip6_finish_output2+0x10b6/0x17a0
[ 504.135076][ C0] ? __ip6_finish_output+0x7d0/0x7d0
[ 504.135090][ C0] ? ip6t_do_table+0x131f/0x14e0
[ 504.135105][ C0] __ip6_finish_output+0x61e/0x7d0
[ 504.135122][ C0] ip6_finish_output+0x31/0x240
[ 504.135135][ C0] ? ip6_output+0x3ea/0x410
[ 504.135150][ C0] ip6_output+0x1fa/0x410
[ 504.135164][ C0] ? ac6_seq_show+0xf0/0xf0
[ 504.135178][ C0] ? ip6_output+0x410/0x410
[ 504.135193][ C0] ndisc_send_skb+0x80d/0xd10
[ 504.135208][ C0] ? ndisc_alloc_skb+0x2b0/0x2b0
[ 504.135220][ C0] ? ndisc_error_report+0xc0/0xc0
[ 504.135236][ C0] ? ndisc_send_rs+0x5fc/0x960
[ 504.135248][ C0] ? memcpy+0x56/0x70
[ 504.135261][ C0] ndisc_send_rs+0x6e5/0x960
[ 504.135274][ C0] addrconf_rs_timer+0x2cf/0x610
[ 504.135288][ C0] ? addrconf_disable_policy_idev+0x360/0x360
[ 504.135303][ C0] ? _raw_spin_lock_irq+0x95/0xf0
[ 504.135317][ C0] ? _raw_spin_lock_irqsave+0x130/0x130
[ 504.135333][ C0] ? addrconf_disable_policy_idev+0x360/0x360
[ 504.135346][ C0] call_timer_fn+0x38/0x290
[ 504.135361][ C0] ? addrconf_disable_policy_idev+0x360/0x360
[ 504.135375][ C0] __run_timers+0x650/0x9e0
[ 504.135391][ C0] ? calc_index+0x200/0x200
[ 504.135404][ C0] ? __irq_exit_rcu+0x5e/0xf0
[ 504.135419][ C0] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 504.135437][ C0] run_timer_softirq+0x6a/0xf0
[ 504.135452][ C0] handle_softirqs+0x250/0x560
[ 504.135467][ C0] __irq_exit_rcu+0x52/0xf0
[ 504.135481][ C0] irq_exit_rcu+0x9/0x10
[ 504.135494][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0
[ 504.135507][ C0]
[ 504.135510][ C0]
[ 504.135515][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 504.135530][ C0] RIP: 0010:finish_task_switch+0x173/0x780
[ 504.135546][ C0] Code: 80 3c 2b 00 74 08 4c 89 f7 e8 d9 64 60 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 15 a5 6b 03 fb 49 8d 9f 38 0b 00 00 <48> 89 d8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df 42 0f b6 04 28
[ 504.135557][ C0] RSP: 0018:ffffc90000a77880 EFLAGS: 00000282
[ 504.135568][ C0] RAX: 0000000080000001 RBX: ffff88810e036df8 RCX: 0000000000000000
[ 504.135578][ C0] RDX: 0000000040000000 RSI: 0000000000000000 RDI: 00000000ffffffff
[ 504.135587][ C0] RBP: ffffc90000a778d0 R08: ffffffff86e94f93 R09: 1ffffffff0dd29f2
[ 504.135597][ C0] R10: dffffc0000000000 R11: fffffbfff0dd29f3 R12: ffff8881f70378c0
[ 504.135608][ C0] R13: 0000000000000000 R14: ffff8881f7038408 R15: ffff88810e0362c0
[ 504.135620][ C0] ? __switch_to_asm+0x3a/0x60
[ 504.135639][ C0] __schedule+0xb76/0x14c0
[ 504.135653][ C0] ? release_firmware_map_entry+0x190/0x190
[ 504.135666][ C0] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 504.135687][ C0] ? preempt_schedule+0xbc/0xd0
[ 504.135699][ C0] preempt_schedule_common+0x9b/0xf0
[ 504.135713][ C0] preempt_schedule+0xbc/0xd0
[ 504.135725][ C0] ? schedule_preempt_disabled+0x20/0x20
[ 504.135738][ C0] ? event_function+0x2e0/0x2e0
[ 504.135750][ C0] ? smp_call_function_single+0x490/0x490
[ 504.135766][ C0] preempt_schedule_thunk+0x16/0x18
[ 504.135780][ C0] ? smp_call_function_single+0x3f2/0x490
[ 504.135795][ C0] smp_call_function_single+0x3f7/0x490
[ 504.135810][ C0] ? event_function+0x2e0/0x2e0
[ 504.135822][ C0] ? flush_smp_call_function_from_idle+0x1b0/0x1b0
[ 504.135838][ C0] ? _raw_spin_unlock_irqrestore+0x5b/0x80
[ 504.135854][ C0] ? event_function+0x2e0/0x2e0
[ 504.135866][ C0] ? selinux_capable+0x2b6/0x3b0
[ 504.135880][ C0] ? memcpy+0x56/0x70
[ 504.135893][ C0] perf_install_in_context+0x4b8/0x760
[ 504.135907][ C0] ? exclusive_event_installable+0x230/0x230
[ 504.135920][ C0] ? add_event_to_ctx+0xd80/0xd80
[ 504.135933][ C0] ? __kasan_check_write+0x14/0x20
[ 504.135947][ C0] ? mutex_lock+0x9b/0x1c0
[ 504.135959][ C0] ? wait_for_completion_killable_timeout+0x10/0x10
[ 504.135974][ C0] ? capable+0x8a/0xe0
[ 504.135986][ C0] ? exclusive_event_installable+0x7c/0x230
[ 504.135999][ C0] ? perf_event__header_size+0x163/0x230
[ 504.136012][ C0] __se_sys_perf_event_open+0x12b1/0x1bb0
[ 504.136026][ C0] ? __x64_sys_perf_event_open+0xd0/0xd0
[ 504.136042][ C0] __x64_sys_perf_event_open+0xbf/0xd0
[ 504.136054][ C0] x64_sys_call+0x50d/0x9a0
[ 504.136111][ C0] do_syscall_64+0x4c/0xa0
[ 504.136128][ C0] ? clear_bhb_loop+0x50/0xa0
[ 504.136140][ C0] ? clear_bhb_loop+0x50/0xa0
[ 504.136152][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 504.136167][ C0] RIP: 0033:0x7f6709b0f819
[ 504.136179][ C0] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
[ 504.136191][ C0] RSP: 002b:00007ffdc4ab99f8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
[ 504.136205][ C0] RAX: ffffffffffffffda RBX: 00007f6709d88fa0 RCX: 00007f6709b0f819
[ 504.136215][ C0] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000100
[ 504.136225][ C0] RBP: 00007f6709ba5c91 R08: 0000000000000000 R09: 0000000000000000
[ 504.136234][ C0] R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
[ 504.136243][ C0] R13: 00007f6709d88fac R14: 00007f6709d88fa0 R15: 00007f6709d88fa0
[ 504.136255][ C0]
[ 525.441680][ T31] INFO: task kworker/u4:1:10 blocked for more than 189 seconds.
[ 525.449538][ T31] Not tainted syzkaller #0
[ 525.454894][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 525.463883][ T31] task:kworker/u4:1 state:D stack:24960 pid: 10 ppid: 2 flags:0x00004000
[ 525.473691][ T31] Workqueue: netns cleanup_net
[ 525.478627][ T31] Call Trace:
[ 525.482187][ T31]
[ 525.485119][ T31] __schedule+0xb6e/0x14c0
[ 525.489623][ T31] ? release_firmware_map_entry+0x190/0x190
[ 525.495733][ T31] ? kthread_data+0x50/0xc0
[ 525.500235][ T31] ? wq_worker_sleeping+0x60/0x200
[ 525.505521][ T31] schedule+0x11e/0x1e0
[ 525.509769][ T31] schedule_timeout+0xba/0x340
[ 525.514809][ T31] ? console_conditional_schedule+0x30/0x30
[ 525.520710][ T31] ? generic_exec_single+0x236/0x3a0
[ 525.526369][ T31] ? __prepare_to_swait+0xa8/0x130
[ 525.531476][ T31] wait_for_common+0x277/0x440
[ 525.536502][ T31] ? wait_for_completion+0x20/0x20
[ 525.541738][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 525.548339][ T31] ? do_softirq+0xe9/0x130
[ 525.552923][ T31] wait_for_completion+0x18/0x20
[ 525.557856][ T31] rcu_barrier+0x373/0x400
[ 525.562458][ T31] l2tp_exit_net+0x13c/0x1e0
[ 525.567131][ T31] ? pde_put+0x14e/0x1a0
[ 525.571371][ T31] ? l2tp_init_net+0x110/0x110
[ 525.576411][ T31] cleanup_net+0x593/0xae0
[ 525.580941][ T31] ? ops_init+0x4a0/0x4a0
[ 525.585466][ T31] process_one_work+0x6be/0xba0
[ 525.590323][ T31] worker_thread+0xa59/0x1200
[ 525.595191][ T31] kthread+0x411/0x500
[ 525.599257][ T31] ? worker_clr_flags+0x190/0x190
[ 525.604425][ T31] ? kthread_blkcg+0xd0/0xd0
[ 525.609118][ T31] ret_from_fork+0x1f/0x30
[ 525.613819][ T31]
[ 525.616875][ T31] NMI backtrace for cpu 1
[ 525.621198][ T31] CPU: 1 PID: 31 Comm: khungtaskd Not tainted syzkaller #0
[ 525.628390][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 525.638444][ T31] Call Trace:
[ 525.641716][ T31]
[ 525.644639][ T31] __dump_stack+0x21/0x30
[ 525.649000][ T31] dump_stack_lvl+0x110/0x170
[ 525.653743][ T31] ? show_regs_print_info+0x20/0x20
[ 525.658960][ T31] dump_stack+0x15/0x20
[ 525.663129][ T31] nmi_cpu_backtrace+0x2af/0x2c0
[ 525.668066][ T31] ? rcu_read_unlock_special+0xb2/0x420
[ 525.673626][ T31] ? nmi_trigger_cpumask_backtrace+0x240/0x240
[ 525.679775][ T31] ? __rcu_read_unlock+0xa0/0xa0
[ 525.684709][ T31] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 525.690775][ T31] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 525.696838][ T31] nmi_trigger_cpumask_backtrace+0x138/0x240
[ 525.702814][ T31] arch_trigger_cpumask_backtrace+0x10/0x20
[ 525.708700][ T31] watchdog+0xd92/0xee0
[ 525.712862][ T31] ? hungtask_pm_notify+0x50/0x50
[ 525.717894][ T31] ? __kasan_check_read+0x11/0x20
[ 525.722963][ T31] ? __kthread_parkme+0xac/0x200
[ 525.727895][ T31] kthread+0x411/0x500
[ 525.732128][ T31] ? hungtask_pm_notify+0x50/0x50
[ 525.737150][ T31] ? kthread_blkcg+0xd0/0xd0
[ 525.741745][ T31] ret_from_fork+0x1f/0x30
[ 525.746168][ T31]
[ 525.749257][ T31] Sending NMI from CPU 1 to CPUs 0:
[ 525.754483][ C0] NMI backtrace for cpu 0
[ 525.754494][ C0] CPU: 0 PID: 361 Comm: syz.2.18 Not tainted syzkaller #0
[ 525.754510][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 525.754518][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60
[ 525.754540][ C0] Code: 00 00 00 0f 0b 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb e8 13 00 00 00 48 8b 3d 2c 83 7f 05 48 89 de e8 84 75 3e 00 5b 5d c3 00 <55> 48 89 e5 48 8b 45 08 65 48 8b 0d 90 a6 98 7e 65 8b 15 91 a6 98
[ 525.754553][ C0] RSP: 0018:ffffc90000006eb8 EFLAGS: 00000046
[ 525.754566][ C0] RAX: 0000000000000000 RBX: ffffc90000007040 RCX: ffff88810e0362c0
[ 525.754577][ C0] RDX: 0000000000010100 RSI: 0000000000000000 RDI: 0000000000000000
[ 525.754585][ C0] RBP: ffffc90000006fb0 R08: ffffc90000007017 R09: ffffc90000006fe0
[ 525.754596][ C0] R10: dffffc0000000000 R11: fffff52000000e03 R12: dffffc0000000000
[ 525.754607][ C0] R13: ffffc90000007046 R14: 0000000000000000 R15: ffffc90000007200
[ 525.754617][ C0] FS: 000055557ce00500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[ 525.754630][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 525.754640][ C0] CR2: 00007ff0503fbda0 CR3: 0000000122466000 CR4: 00000000003506b0
[ 525.754653][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 525.754661][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 525.754670][ C0] Call Trace:
[ 525.754674][ C0]
[ 525.754679][ C0] ? perf_prepare_sample+0x112d/0x1a40
[ 525.754697][ C0] ? perf_callchain+0x1c0/0x1c0
[ 525.754712][ C0] ? get_perf_callchain+0x391/0x460
[ 525.754728][ C0] perf_event_output_forward+0xd1/0x1a0
[ 525.754743][ C0] ? perf_get_page_size+0x3a0/0x3a0
[ 525.754758][ C0] ? perf_output_begin_forward+0x663/0x8f0
[ 525.754774][ C0] ? __this_cpu_preempt_check+0x13/0x20
[ 525.754789][ C0] ? __perf_event_account_interrupt+0x1a4/0x2c0
[ 525.754805][ C0] __perf_event_overflow+0x1f9/0x380
[ 525.754821][ C0] perf_swevent_event+0x4b2/0x530
[ 525.754837][ C0] perf_tp_event+0x76c/0xa30
[ 525.754867][ C0] ? perf_trace_run_bpf_submit+0x1c0/0x1c0
[ 525.754883][ C0] ? __this_cpu_preempt_check+0x13/0x20
[ 525.754896][ C0] ? __perf_event_account_interrupt+0x1a4/0x2c0
[ 525.754918][ C0] perf_trace_run_bpf_submit+0xf3/0x1c0
[ 525.754935][ C0] perf_trace_msr_trace_class+0x2b0/0x360
[ 525.754949][ C0] ? trace_event_raw_event_msr_trace_class+0x2b0/0x2b0
[ 525.754964][ C0] ? __hrtimer_run_queues+0x85e/0x8c0
[ 525.754982][ C0] do_trace_write_msr+0xb4/0x100
[ 525.754995][ C0] native_apic_msr_write+0x46/0x50
[ 525.755012][ C0] lapic_next_event+0x5f/0x70
[ 525.755025][ C0] clockevents_program_event+0x1c7/0x300
[ 525.755039][ C0] tick_program_event+0xa3/0x120
[ 525.755054][ C0] hrtimer_interrupt+0x501/0x8c0
[ 525.755077][ C0] __sysvec_apic_timer_interrupt+0xfa/0x3e0
[ 525.755091][ C0] sysvec_apic_timer_interrupt+0x53/0xc0
[ 525.755105][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 525.755122][ C0] RIP: 0010:__kfence_alloc+0x21e/0x340
[ 525.755139][ C0] Code: 8b 05 3e 13 dc 04 48 3d 28 2c 85 86 0f 84 c4 00 00 00 e8 e5 ad c0 ff 48 c7 c7 00 2b 85 86 e8 b9 14 ce ff 80 3d 24 39 40 05 00 <0f> 84 b8 00 00 00 4c 8d 74 24 40 4c 89 f7 be 40 00 00 00 31 d2 e8
[ 525.755151][ C0] RSP: 0018:ffffc90000007860 EFLAGS: 00000202
[ 525.755162][ C0] RAX: ffffffff81772e01 RBX: 0000000000000a20 RCX: ffff88810e0362c0
[ 525.755172][ C0] RDX: 0000000000000100 RSI: 0000000000000101 RDI: 0000000000000000
[ 525.755181][ C0] RBP: ffffc90000007b40 R08: ffffc90000007137 R09: ffffc90000007120
[ 525.755192][ C0] R10: dffffc0000000000 R11: fffff52000000e27 R12: dffffc0000000000
[ 525.755202][ C0] R13: 0000000000000001 R14: 0000000000000000 R15: 00000000000000f8
[ 525.755212][ C0] ? irq_work_queue+0x41/0x150
[ 525.755228][ C0] ? kfence_guarded_free+0x810/0x810
[ 525.755249][ C0] ? __should_failslab+0xa4/0xe0
[ 525.755264][ C0] ? should_failslab+0x9/0x20
[ 525.755277][ C0] ? slab_pre_alloc_hook+0x3b/0xe0
[ 525.755292][ C0] ? __alloc_skb+0xe0/0x740
[ 525.755307][ C0] kmem_cache_alloc+0x1b9/0x260
[ 525.755322][ C0] __alloc_skb+0xe0/0x740
[ 525.755336][ C0] ndisc_send_rs+0x2ce/0x960
[ 525.755350][ C0] ? ipv6_get_lladdr+0x1be/0x200
[ 525.755366][ C0] addrconf_rs_timer+0x2cf/0x610
[ 525.755378][ C0] ? __irq_exit_rcu+0x5e/0xf0
[ 525.755394][ C0] ? addrconf_disable_policy_idev+0x360/0x360
[ 525.755409][ C0] ? addrconf_disable_policy_idev+0x360/0x360
[ 525.755422][ C0] call_timer_fn+0x38/0x290
[ 525.755436][ C0] ? addrconf_disable_policy_idev+0x360/0x360
[ 525.755450][ C0] __run_timers+0x650/0x9e0
[ 525.755467][ C0] ? calc_index+0x200/0x200
[ 525.755481][ C0] ? __irq_exit_rcu+0x5e/0xf0
[ 525.755495][ C0] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 525.755513][ C0] run_timer_softirq+0x6a/0xf0
[ 525.755528][ C0] handle_softirqs+0x250/0x560
[ 525.755543][ C0] __irq_exit_rcu+0x52/0xf0
[ 525.755557][ C0] irq_exit_rcu+0x9/0x10
[ 525.755570][ C0] sysvec_apic_timer_interrupt+0xa9/0xc0
[ 525.755583][ C0]
[ 525.755587][ C0]
[ 525.755591][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 525.755607][ C0] RIP: 0010:finish_task_switch+0x173/0x780
[ 525.755624][ C0] Code: 80 3c 2b 00 74 08 4c 89 f7 e8 d9 64 60 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 15 a5 6b 03 fb 49 8d 9f 38 0b 00 00 <48> 89 d8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df 42 0f b6 04 28
[ 525.755636][ C0] RSP: 0018:ffffc90000a77880 EFLAGS: 00000282
[ 525.755647][ C0] RAX: 0000000080000001 RBX: ffff88810e036df8 RCX: 0000000000000000
[ 525.755657][ C0] RDX: 0000000040000000 RSI: 0000000000000000 RDI: 00000000ffffffff
[ 525.755666][ C0] RBP: ffffc90000a778d0 R08: ffffffff86e94f93 R09: 1ffffffff0dd29f2
[ 525.755676][ C0] R10: dffffc0000000000 R11: fffffbfff0dd29f3 R12: ffff8881f70378c0
[ 525.755691][ C0] R13: 0000000000000000 R14: ffff8881f7038408 R15: ffff88810e0362c0
[ 525.755703][ C0] ? __switch_to_asm+0x3a/0x60
[ 525.755718][ C0] __schedule+0xb76/0x14c0
[ 525.755731][ C0] ? release_firmware_map_entry+0x190/0x190
[ 525.755745][ C0] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 525.755761][ C0] ? preempt_schedule+0xbc/0xd0
[ 525.755774][ C0] preempt_schedule_common+0x9b/0xf0
[ 525.755787][ C0] preempt_schedule+0xbc/0xd0
[ 525.755799][ C0] ? schedule_preempt_disabled+0x20/0x20
[ 525.755813][ C0] ? event_function+0x2e0/0x2e0
[ 525.755824][ C0] ? smp_call_function_single+0x490/0x490
[ 525.755841][ C0] preempt_schedule_thunk+0x16/0x18
[ 525.755855][ C0] ? smp_call_function_single+0x3f2/0x490
[ 525.755871][ C0] smp_call_function_single+0x3f7/0x490
[ 525.755886][ C0] ? event_function+0x2e0/0x2e0
[ 525.755898][ C0] ? flush_smp_call_function_from_idle+0x1b0/0x1b0
[ 525.755914][ C0] ? _raw_spin_unlock_irqrestore+0x5b/0x80
[ 525.755929][ C0] ? event_function+0x2e0/0x2e0
[ 525.755941][ C0] ? selinux_capable+0x2b6/0x3b0
[ 525.755955][ C0] ? memcpy+0x56/0x70
[ 525.755969][ C0] perf_install_in_context+0x4b8/0x760
[ 525.755983][ C0] ? exclusive_event_installable+0x230/0x230
[ 525.755995][ C0] ? add_event_to_ctx+0xd80/0xd80
[ 525.756009][ C0] ? __kasan_check_write+0x14/0x20
[ 525.756022][ C0] ? mutex_lock+0x9b/0x1c0
[ 525.756034][ C0] ? wait_for_completion_killable_timeout+0x10/0x10
[ 525.756049][ C0] ? capable+0x8a/0xe0
[ 525.756066][ C0] ? exclusive_event_installable+0x7c/0x230
[ 525.756078][ C0] ? perf_event__header_size+0x163/0x230
[ 525.756092][ C0] __se_sys_perf_event_open+0x12b1/0x1bb0
[ 525.756106][ C0] ? __x64_sys_perf_event_open+0xd0/0xd0
[ 525.756122][ C0] __x64_sys_perf_event_open+0xbf/0xd0
[ 525.756135][ C0] x64_sys_call+0x50d/0x9a0
[ 525.756147][ C0] do_syscall_64+0x4c/0xa0
[ 525.756162][ C0] ? clear_bhb_loop+0x50/0xa0
[ 525.756173][ C0] ? clear_bhb_loop+0x50/0xa0
[ 525.756185][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 525.756202][ C0] RIP: 0033:0x7f6709b0f819
[ 525.756214][ C0] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
[ 525.756231][ C0] RSP: 002b:00007ffdc4ab99f8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
[ 525.756245][ C0] RAX: ffffffffffffffda RBX: 00007f6709d88fa0 RCX: 00007f6709b0f819
[ 525.756255][ C0] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000100
[ 525.756265][ C0] RBP: 00007f6709ba5c91 R08: 0000000000000000 R09: 0000000000000000
[ 525.756274][ C0] R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
[ 525.756283][ C0] R13: 00007f6709d88fac R14: 00007f6709d88fa0 R15: 00007f6709d88fa0
[ 525.756295][ C0]