Warning: Permanently added '10.128.1.25' (ED25519) to the list of known hosts. 2026/08/04 01:48:37 parsed 1 programs 2026/08/04 01:48:37 serving rpc on tcp://46869 [ 23.564341][ T28] audit: type=1400 audit(1785808117.456:64): 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 [ 23.586204][ T28] audit: type=1400 audit(1785808117.456:65): 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 [ 24.397764][ T28] audit: type=1400 audit(1785808118.286:66): avc: denied { mounton } for pid=301 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 [ 24.398758][ T301] cgroup: Unknown subsys name 'net' [ 24.421459][ T28] audit: type=1400 audit(1785808118.286:67): avc: denied { mount } for pid=301 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 [ 24.449107][ T28] audit: type=1400 audit(1785808118.316:68): avc: denied { unmount } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 24.449247][ T301] cgroup: Unknown subsys name 'devices' [ 24.591567][ T301] cgroup: Unknown subsys name 'hugetlb' [ 24.597210][ T301] cgroup: Unknown subsys name 'rlimit' [ 24.745403][ T28] audit: type=1400 audit(1785808118.636:69): avc: denied { setattr } for pid=301 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 [ 24.769572][ T28] audit: type=1400 audit(1785808118.636:70): avc: denied { create } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.790501][ T28] audit: type=1400 audit(1785808118.636:71): avc: denied { write } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.811328][ T28] audit: type=1400 audit(1785808118.636:72): avc: denied { read } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.821285][ T305] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). Setting up swapspace version 1, size = 127995904 bytes [ 24.831845][ T28] audit: type=1400 audit(1785808118.636:73): avc: denied { mounton } for pid=301 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 [ 24.877957][ T301] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 25.686610][ T312] request_module fs-gadgetfs succeeded, but still no fs? [ 25.992939][ T335] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.000272][ T335] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.007939][ T335] device bridge_slave_0 entered promiscuous mode [ 26.015032][ T335] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.022771][ T335] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.031042][ T335] device bridge_slave_1 entered promiscuous mode [ 26.050161][ T331] syz-executor (331) used greatest stack depth: 22624 bytes left [ 26.074756][ T335] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.082001][ T335] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.089887][ T335] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.097076][ T335] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.118039][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.126033][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.133800][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.144966][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.154774][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.162354][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.172861][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.181540][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.188852][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.201887][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.211877][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.225840][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.237260][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.245808][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.253660][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.262068][ T335] device veth0_vlan entered promiscuous mode [ 26.272573][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.282126][ T335] device veth1_macvtap entered promiscuous mode [ 26.292195][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.302634][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.332625][ T335] syz-executor (335) used greatest stack depth: 21792 bytes left 2026/08/04 01:48:40 executed programs: 0 [ 26.860921][ T371] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.868008][ T371] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.875762][ T371] device bridge_slave_0 entered promiscuous mode [ 26.883515][ T371] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.890671][ T371] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.897975][ T371] device bridge_slave_1 entered promiscuous mode [ 26.938502][ T371] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.945673][ T371] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.953067][ T371] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.960227][ T371] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.978788][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.986487][ T43] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.994358][ T43] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.004433][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 27.012914][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.021399][ T43] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.028431][ T43] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.037773][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 27.046326][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.054577][ T43] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.061653][ T43] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.073483][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 27.081850][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.090764][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 27.099018][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.112334][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 27.121080][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.131840][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 27.140415][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.149271][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.157162][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.165358][ T371] device veth0_vlan entered promiscuous mode [ 27.175565][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 27.183804][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.198367][ T371] device veth1_macvtap entered promiscuous mode [ 27.207689][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 27.215674][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 27.224182][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.239797][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 27.248887][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.274852][ T43] ================================================================== [ 27.283455][ T43] BUG: KASAN: use-after-free in rcu_segcblist_enqueue+0x9c/0xb0 [ 27.291636][ T43] Write of size 8 at addr ffff888113e08590 by task kworker/u4:2/43 [ 27.299702][ T43] [ 27.302208][ T43] CPU: 0 PID: 43 Comm: kworker/u4:2 Not tainted syzkaller #0 [ 27.309683][ T43] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 27.320458][ T43] Workqueue: l2tp l2tp_tunnel_del_work [ 27.326288][ T43] Call Trace: [ 27.329731][ T43] [ 27.332685][ T43] __dump_stack+0x21/0x24 [ 27.337046][ T43] dump_stack_lvl+0x110/0x170 [ 27.341781][ T43] ? __cfi_dump_stack_lvl+0x8/0x8 [ 27.346997][ T43] ? rcu_segcblist_enqueue+0x9c/0xb0 [ 27.352379][ T43] print_address_description+0x71/0x200 [ 27.357928][ T43] print_report+0x4a/0x60 [ 27.362266][ T43] kasan_report+0x122/0x150 [ 27.366774][ T43] ? rcu_segcblist_enqueue+0x9c/0xb0 [ 27.372065][ T43] __asan_report_store8_noabort+0x17/0x20 [ 27.377790][ T43] rcu_segcblist_enqueue+0x9c/0xb0 [ 27.383691][ T43] call_rcu+0x554/0xf50 [ 27.388028][ T43] ? __cfi_call_rcu+0x10/0x10 [ 27.392801][ T43] ? debug_smp_processor_id+0x17/0x20 [ 27.398273][ T43] ? kasan_quarantine_put+0x34/0x190 [ 27.403589][ T43] delete_node+0x1c0/0xa60 [ 27.408017][ T43] __radix_tree_delete+0x2c3/0x3a0 [ 27.413135][ T43] radix_tree_delete_item+0x2fc/0x410 [ 27.418923][ T43] idr_remove+0x43/0x60 [ 27.423175][ T43] l2tp_tunnel_del_work+0x385/0x410 [ 27.428377][ T43] process_one_work+0x717/0xc30 [ 27.433914][ T43] worker_thread+0xa4d/0x11d0 [ 27.438612][ T43] kthread+0x281/0x320 [ 27.442709][ T43] ? __cfi_worker_thread+0x10/0x10 [ 27.447841][ T43] ? __cfi_kthread+0x10/0x10 [ 27.452529][ T43] ret_from_fork+0x1f/0x30 [ 27.457051][ T43] [ 27.460071][ T43] [ 27.462396][ T43] Allocated by task 376: [ 27.466649][ T43] kasan_set_track+0x4b/0x70 [ 27.471416][ T43] kasan_save_alloc_info+0x1f/0x30 [ 27.476614][ T43] __kasan_kmalloc+0x95/0xb0 [ 27.481204][ T43] __kmalloc+0xb4/0x1e0 [ 27.485469][ T43] l2tp_session_create+0x38/0xbd0 [ 27.490501][ T43] pppol2tp_connect+0xbf5/0x1640 [ 27.495553][ T43] __sys_connect+0x3da/0x460 [ 27.500237][ T43] __x64_sys_connect+0x7a/0x90 [ 27.505020][ T43] x64_sys_call+0x88d/0x9a0 [ 27.509716][ T43] do_syscall_64+0x4c/0xa0 [ 27.514314][ T43] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 27.520302][ T43] [ 27.522623][ T43] Freed by task 43: [ 27.526422][ T43] kasan_set_track+0x4b/0x70 [ 27.531013][ T43] kasan_save_free_info+0x2b/0x40 [ 27.536033][ T43] ____kasan_slab_free+0x132/0x180 [ 27.541153][ T43] __kasan_slab_free+0x11/0x20 [ 27.546318][ T43] slab_free_freelist_hook+0xc2/0x190 [ 27.551770][ T43] __kmem_cache_free+0xb7/0x1b0 [ 27.556622][ T43] kfree+0x6f/0xf0 [ 27.560422][ T43] l2tp_session_put+0xaf/0x1a0 [ 27.565181][ T43] l2tp_session_delete+0x3df/0x4d0 [ 27.570296][ T43] l2tp_tunnel_del_work+0x199/0x410 [ 27.575578][ T43] process_one_work+0x717/0xc30 [ 27.580427][ T43] worker_thread+0xa4d/0x11d0 [ 27.585099][ T43] kthread+0x281/0x320 [ 27.589175][ T43] ret_from_fork+0x1f/0x30 [ 27.593793][ T43] [ 27.596130][ T43] Last potentially related work creation: [ 27.602192][ T43] kasan_save_stack+0x3a/0x60 [ 27.606880][ T43] __kasan_record_aux_stack+0xb6/0xc0 [ 27.612254][ T43] kasan_record_aux_stack_noalloc+0xb/0x10 [ 27.618053][ T43] call_rcu+0xcf/0xf50 [ 27.622119][ T43] pppol2tp_release+0x1e3/0x2b0 [ 27.626970][ T43] sock_close+0xc9/0x220 [ 27.631212][ T43] __fput+0x1fd/0x8f0 [ 27.635283][ T43] ____fput+0x15/0x20 [ 27.639263][ T43] task_work_run+0x1e1/0x250 [ 27.643856][ T43] exit_to_user_mode_loop+0x9b/0xb0 [ 27.649054][ T43] exit_to_user_mode_prepare+0x87/0xd0 [ 27.654512][ T43] syscall_exit_to_user_mode+0x1a/0x30 [ 27.660061][ T43] do_syscall_64+0x58/0xa0 [ 27.664482][ T43] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 27.670552][ T43] [ 27.672872][ T43] The buggy address belongs to the object at ffff888113e08400 [ 27.672872][ T43] which belongs to the cache kmalloc-512 of size 512 [ 27.686921][ T43] The buggy address is located 400 bytes inside of [ 27.686921][ T43] 512-byte region [ffff888113e08400, ffff888113e08600) [ 27.700191][ T43] [ 27.702517][ T43] The buggy address belongs to the physical page: [ 27.708926][ T43] page:ffffea00044f8200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x113e08 [ 27.719421][ T43] head:ffffea00044f8200 order:2 compound_mapcount:0 compound_pincount:0 [ 27.727749][ T43] flags: 0x4000000000010200(slab|head|zone=1) [ 27.733912][ T43] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 27.742595][ T43] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 27.751354][ T43] page dumped because: kasan: bad access detected [ 27.757850][ T43] page_owner tracks the page as allocated [ 27.763758][ T43] page last allocated via order 2, migratetype Unmovable, gfp_mask 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 371, tgid 371 (syz-executor), ts 27263270310, free_ts 26674128501 [ 27.784431][ T43] post_alloc_hook+0x1f5/0x210 [ 27.789231][ T43] prep_new_page+0x1c/0x110 [ 27.793929][ T43] get_page_from_freelist+0x2ca9/0x2d20 [ 27.799673][ T43] __alloc_pages+0x1fa/0x610 [ 27.804370][ T43] alloc_slab_page+0x6e/0xf0 [ 27.809077][ T43] new_slab+0x98/0x3e0 [ 27.813233][ T43] ___slab_alloc+0x70f/0xb70 [ 27.818108][ T43] __slab_alloc+0x5e/0xa0 [ 27.822530][ T43] __kmem_cache_alloc_node+0x204/0x2d0 [ 27.828093][ T43] __kmalloc+0xa4/0x1e0 [ 27.832249][ T43] fib6_info_alloc+0x34/0xe0 [ 27.837013][ T43] ip6_route_info_create+0x51b/0x14d0 [ 27.842486][ T43] ip6_route_add+0x27/0x130 [ 27.847204][ T43] addrconf_permanent_addr+0x635/0x940 [ 27.852696][ T43] addrconf_notify+0x7ca/0xe30 [ 27.857575][ T43] raw_notifier_call_chain+0xa1/0x110 [ 27.863043][ T43] page last free stack trace: [ 27.867817][ T43] free_unref_page_prepare+0x80c/0x820 [ 27.873287][ T43] free_unref_page+0x93/0x530 [ 27.878059][ T43] __free_pages+0x67/0x100 [ 27.882479][ T43] __vunmap+0xa3c/0xc00 [ 27.886720][ T43] vfree+0x61/0x90 [ 27.890441][ T43] kcov_close+0x2b/0x50 [ 27.894593][ T43] __fput+0x1fd/0x8f0 [ 27.898666][ T43] ____fput+0x15/0x20 [ 27.902739][ T43] task_work_run+0x1e1/0x250 [ 27.907331][ T43] do_exit+0xaf2/0x2850 [ 27.911490][ T43] do_group_exit+0x21b/0x2e0 [ 27.916080][ T43] get_signal+0x167c/0x1700 [ 27.920600][ T43] arch_do_signal_or_restart+0xd1/0x11c0 [ 27.926409][ T43] exit_to_user_mode_loop+0x7a/0xb0 [ 27.931795][ T43] exit_to_user_mode_prepare+0x87/0xd0 [ 27.937267][ T43] syscall_exit_to_user_mode+0x1a/0x30 [ 27.942987][ T43] [ 27.945323][ T43] Memory state around the buggy address: [ 27.950946][ T43] ffff888113e08480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.959089][ T43] ffff888113e08500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.967149][ T43] >ffff888113e08580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.975459][ T43] ^ [ 27.980134][ T43] ffff888113e08600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.988192][ T43] ffff888113e08680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.996351][ T43] ================================================================== [ 28.005010][ T43] Disabling lock debugging due to kernel taint