Warning: Permanently added '10.128.1.144' (ED25519) to the list of known hosts. 2026/10/24 05:09:41 parsed 1 programs 2026/10/24 05:09:41 serving rpc on tcp://34679 [ 23.647714][ T28] audit: type=1400 audit(1792818581.495:64): avc: denied { node_bind } for pid=295 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 23.668566][ T28] audit: type=1400 audit(1792818581.495:65): avc: denied { module_request } for pid=295 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 [ 24.387794][ T28] audit: type=1400 audit(1792818582.235:66): avc: denied { mounton } for pid=303 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1 [ 24.388786][ T303] cgroup: Unknown subsys name 'net' [ 24.410473][ T28] audit: type=1400 audit(1792818582.235:67): avc: denied { mount } for pid=303 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 [ 24.437730][ T28] audit: type=1400 audit(1792818582.265:68): avc: denied { unmount } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 24.437944][ T303] cgroup: Unknown subsys name 'devices' [ 24.584732][ T303] cgroup: Unknown subsys name 'hugetlb' [ 24.590355][ T303] cgroup: Unknown subsys name 'rlimit' [ 24.727674][ T28] audit: type=1400 audit(1792818582.575:69): avc: denied { setattr } for pid=303 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=258 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 24.750965][ T28] audit: type=1400 audit(1792818582.575:70): avc: denied { create } for pid=303 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 [ 24.768625][ T306] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 24.779958][ T28] audit: type=1400 audit(1792818582.575:71): avc: denied { write } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.800357][ T28] audit: type=1400 audit(1792818582.575:72): avc: denied { read } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.821021][ T28] audit: type=1400 audit(1792818582.575:73): avc: denied { mounton } for pid=303 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 [ 24.824632][ T303] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 25.525887][ T308] request_module fs-gadgetfs succeeded, but still no fs? [ 25.947274][ T347] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.954360][ T347] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.961665][ T347] device bridge_slave_0 entered promiscuous mode [ 25.969688][ T347] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.976755][ T347] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.984038][ T347] device bridge_slave_1 entered promiscuous mode [ 26.019359][ T347] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.026418][ T347] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.033705][ T347] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.040722][ T347] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.058981][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.066537][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.073777][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.082346][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.090913][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.097967][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.107262][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.115483][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.122507][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.133959][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.142973][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.158413][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.168994][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.177384][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.184925][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.192843][ T347] device veth0_vlan entered promiscuous mode [ 26.204399][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.213472][ T347] device veth1_macvtap entered promiscuous mode [ 26.222107][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.231894][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.257883][ T347] syz-executor (347) used greatest stack depth: 21024 bytes left 2026/10/24 05:09:44 executed programs: 0 [ 26.510373][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.517555][ T370] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.524976][ T370] device bridge_slave_0 entered promiscuous mode [ 26.531873][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.539079][ T370] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.546717][ T370] device bridge_slave_1 entered promiscuous mode [ 26.582556][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.589624][ T370] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.596900][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.603937][ T370] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.629019][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.637045][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.644347][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.654217][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.662361][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.669411][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.681823][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.690050][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.697084][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.708756][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.717912][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.737331][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.748220][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.756363][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.763859][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.771802][ T370] device veth0_vlan entered promiscuous mode [ 26.781382][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.796279][ T370] device veth1_macvtap entered promiscuous mode [ 26.805635][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.815566][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.843789][ C1] ================================================================== [ 26.851881][ C1] BUG: KASAN: use-after-free in rcu_cblist_dequeue+0x6c/0xb0 [ 26.859255][ C1] Read of size 8 at addr ffff88812ac11990 by task ksoftirqd/1/23 [ 26.866951][ C1] [ 26.869256][ C1] CPU: 1 PID: 23 Comm: ksoftirqd/1 Not tainted syzkaller #0 [ 26.876519][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 [ 26.886562][ C1] Call Trace: [ 26.889821][ C1] [ 26.892736][ C1] __dump_stack+0x21/0x24 [ 26.897055][ C1] dump_stack_lvl+0x110/0x170 [ 26.901710][ C1] ? __cfi_dump_stack_lvl+0x8/0x8 [ 26.906714][ C1] ? debug_smp_processor_id+0x17/0x20 [ 26.912071][ C1] ? rcu_cblist_dequeue+0x6c/0xb0 [ 26.917079][ C1] print_address_description+0x71/0x200 [ 26.922609][ C1] print_report+0x4a/0x60 [ 26.926927][ C1] kasan_report+0x122/0x150 [ 26.931419][ C1] ? rcu_cblist_dequeue+0x6c/0xb0 [ 26.936427][ C1] __asan_report_load8_noabort+0x14/0x20 [ 26.942043][ C1] rcu_cblist_dequeue+0x6c/0xb0 [ 26.946875][ C1] rcu_do_batch+0x40d/0xc30 [ 26.951364][ C1] ? __this_cpu_preempt_check+0x13/0x20 [ 26.956893][ C1] ? __raise_softirq_irqoff+0x17/0xd0 [ 26.962247][ C1] ? __cfi_raise_softirq+0x10/0x10 [ 26.967342][ C1] ? rcu_core+0xf00/0xf00 [ 26.971652][ C1] ? _raw_spin_unlock_irqrestore+0x5a/0x80 [ 26.977437][ C1] ? rcu_report_qs_rnp+0x2b9/0x390 [ 26.982533][ C1] rcu_core+0x486/0xf00 [ 26.986671][ C1] ? rcu_cpu_kthread_park+0x90/0x90 [ 26.991854][ C1] ? __this_cpu_preempt_check+0x13/0x20 [ 26.997397][ C1] ? rcu_softirq_qs+0xd5/0x340 [ 27.002144][ C1] ? __cfi_rcu_softirq_qs+0x10/0x10 [ 27.007325][ C1] ? __schedule+0xcbb/0x1700 [ 27.011898][ C1] rcu_core_si+0x9/0x10 [ 27.016045][ C1] handle_softirqs+0x1dd/0x5f0 [ 27.020793][ C1] ? __cfi_run_ksoftirqd+0x10/0x10 [ 27.025889][ C1] run_ksoftirqd+0x28/0x30 [ 27.030290][ C1] smpboot_thread_fn+0x48c/0x8e0 [ 27.035216][ C1] kthread+0x281/0x320 [ 27.039265][ C1] ? __cfi_smpboot_thread_fn+0x10/0x10 [ 27.044714][ C1] ? __cfi_kthread+0x10/0x10 [ 27.049286][ C1] ret_from_fork+0x1f/0x30 [ 27.053692][ C1] [ 27.056694][ C1] [ 27.058994][ C1] Allocated by task 374: [ 27.063210][ C1] kasan_set_track+0x4b/0x70 [ 27.067783][ C1] kasan_save_alloc_info+0x1f/0x30 [ 27.072872][ C1] __kasan_kmalloc+0x95/0xb0 [ 27.077447][ C1] __kmalloc+0xb4/0x1e0 [ 27.081591][ C1] l2tp_session_create+0x38/0xbd0 [ 27.086597][ C1] pppol2tp_connect+0xbf5/0x1640 [ 27.091519][ C1] __sys_connect+0x3da/0x460 [ 27.096093][ C1] __x64_sys_connect+0x7a/0x90 [ 27.100838][ C1] x64_sys_call+0x88d/0x9a0 [ 27.105327][ C1] do_syscall_64+0x4c/0xa0 [ 27.109721][ C1] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 27.115596][ C1] [ 27.117899][ C1] Freed by task 352: [ 27.121764][ C1] kasan_set_track+0x4b/0x70 [ 27.126334][ C1] kasan_save_free_info+0x2b/0x40 [ 27.131337][ C1] ____kasan_slab_free+0x132/0x180 [ 27.136431][ C1] __kasan_slab_free+0x11/0x20 [ 27.141176][ C1] slab_free_freelist_hook+0xc2/0x190 [ 27.146526][ C1] __kmem_cache_free+0xb7/0x1b0 [ 27.151364][ C1] kfree+0x6f/0xf0 [ 27.155071][ C1] l2tp_session_put+0xaf/0x1a0 [ 27.159815][ C1] l2tp_session_delete+0x3df/0x4d0 [ 27.164913][ C1] l2tp_tunnel_del_work+0x199/0x410 [ 27.170093][ C1] process_one_work+0x717/0xc30 [ 27.175010][ C1] worker_thread+0xa4d/0x11d0 [ 27.179668][ C1] kthread+0x281/0x320 [ 27.183718][ C1] ret_from_fork+0x1f/0x30 [ 27.188116][ C1] [ 27.190417][ C1] Last potentially related work creation: [ 27.196129][ C1] kasan_save_stack+0x3a/0x60 [ 27.200806][ C1] __kasan_record_aux_stack+0xb6/0xc0 [ 27.206166][ C1] kasan_record_aux_stack_noalloc+0xb/0x10 [ 27.211966][ C1] call_rcu+0xcf/0xf50 [ 27.216022][ C1] pppol2tp_release+0x1e3/0x2b0 [ 27.220865][ C1] sock_close+0xc9/0x220 [ 27.225097][ C1] __fput+0x1fd/0x8f0 [ 27.229064][ C1] ____fput+0x15/0x20 [ 27.233035][ C1] task_work_run+0x1e1/0x250 [ 27.237609][ C1] exit_to_user_mode_loop+0x9b/0xb0 [ 27.242789][ C1] exit_to_user_mode_prepare+0x87/0xd0 [ 27.248233][ C1] syscall_exit_to_user_mode+0x1a/0x30 [ 27.253673][ C1] do_syscall_64+0x58/0xa0 [ 27.258068][ C1] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 27.263947][ C1] [ 27.266250][ C1] The buggy address belongs to the object at ffff88812ac11800 [ 27.266250][ C1] which belongs to the cache kmalloc-512 of size 512 [ 27.280285][ C1] The buggy address is located 400 bytes inside of [ 27.280285][ C1] 512-byte region [ffff88812ac11800, ffff88812ac11a00) [ 27.293555][ C1] [ 27.295867][ C1] The buggy address belongs to the physical page: [ 27.302252][ C1] page:ffffea0004ab0400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12ac10 [ 27.312485][ C1] head:ffffea0004ab0400 order:2 compound_mapcount:0 compound_pincount:0 [ 27.320794][ C1] flags: 0x4000000000010200(slab|head|zone=1) [ 27.326860][ C1] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 27.335426][ C1] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 27.343983][ C1] page dumped because: kasan: bad access detected [ 27.350396][ C1] page_owner tracks the page as allocated [ 27.356092][ C1] page last allocated via order 2, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 8, tgid 8 (kworker/u4:0), ts 26823729562, free_ts 26377290695 [ 27.378304][ C1] post_alloc_hook+0x1f5/0x210 [ 27.383061][ C1] prep_new_page+0x1c/0x110 [ 27.387551][ C1] get_page_from_freelist+0x2ca9/0x2d20 [ 27.393082][ C1] __alloc_pages+0x1fa/0x610 [ 27.397657][ C1] alloc_slab_page+0x6e/0xf0 [ 27.402230][ C1] new_slab+0x98/0x3e0 [ 27.406279][ C1] ___slab_alloc+0x70f/0xb70 [ 27.410856][ C1] __slab_alloc+0x5e/0xa0 [ 27.415163][ C1] __kmem_cache_alloc_node+0x204/0x2d0 [ 27.420605][ C1] __kmalloc+0xa4/0x1e0 [ 27.424751][ C1] fib6_info_alloc+0x34/0xe0 [ 27.429322][ C1] ip6_route_info_create+0x51b/0x14d0 [ 27.434677][ C1] ip6_route_add+0x27/0x130 [ 27.439171][ C1] addrconf_add_dev+0x388/0x4a0 [ 27.444010][ C1] addrconf_init_auto_addrs+0x7b9/0xbc0 [ 27.449544][ C1] addrconf_notify+0x7fe/0xe30 [ 27.454294][ C1] page last free stack trace: [ 27.458942][ C1] free_unref_page_prepare+0x81b/0x820 [ 27.464387][ C1] free_unref_page+0x93/0x530 [ 27.469048][ C1] __free_pages+0x67/0x100 [ 27.473447][ C1] __vunmap+0xa3c/0xc00 [ 27.477586][ C1] vfree+0x61/0x90 [ 27.481304][ C1] kcov_close+0x2b/0x50 [ 27.485439][ C1] __fput+0x1fd/0x8f0 [ 27.489408][ C1] ____fput+0x15/0x20 [ 27.493372][ C1] task_work_run+0x1e1/0x250 [ 27.497949][ C1] do_exit+0xb0d/0x29f0 [ 27.502091][ C1] do_group_exit+0x21b/0x2e0 [ 27.506667][ C1] get_signal+0x167c/0x1700 [ 27.511157][ C1] arch_do_signal_or_restart+0xd1/0x11c0 [ 27.516772][ C1] exit_to_user_mode_loop+0x7a/0xb0 [ 27.521955][ C1] exit_to_user_mode_prepare+0x87/0xd0 [ 27.527442][ C1] syscall_exit_to_user_mode+0x1a/0x30 [ 27.532908][ C1] [ 27.535263][ C1] Memory state around the buggy address: [ 27.540876][ C1] ffff88812ac11880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.548924][ C1] ffff88812ac11900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.556970][ C1] >ffff88812ac11980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.565007][ C1] ^ [ 27.569576][ C1] ffff88812ac11a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.577616][ C1] ffff88812ac11a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.585658][ C1] ================================================================== [ 27.593738][ C1] Disabling lock debugging due to kernel taint