Warning: Permanently added '10.128.1.74' (ED25519) to the list of known hosts. 2026/09/13 17:48:00 parsed 1 programs 2026/09/13 17:48:00 serving rpc on tcp://41103 [ 24.077850][ T24] audit: type=1400 audit(1789321680.910:64): avc: denied { node_bind } for pid=287 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 24.099247][ T24] audit: type=1400 audit(1789321680.920:65): avc: denied { create } for pid=287 comm="syz-execprog" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=rawip_socket permissive=1 [ 24.119081][ T24] audit: type=1400 audit(1789321680.920:66): avc: denied { module_request } for pid=287 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 [ 25.061395][ T24] audit: type=1400 audit(1789321681.900:67): avc: denied { mounton } for pid=293 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 [ 25.064719][ T293] cgroup: Unknown subsys name 'net' [ 25.084146][ T24] audit: type=1400 audit(1789321681.900:68): avc: denied { mount } for pid=293 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 [ 25.111397][ T24] audit: type=1400 audit(1789321681.930:69): avc: denied { unmount } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 25.111892][ T293] cgroup: Unknown subsys name 'devices' [ 25.250401][ T293] cgroup: Unknown subsys name 'hugetlb' [ 25.256016][ T293] cgroup: Unknown subsys name 'rlimit' [ 25.435137][ T24] audit: type=1400 audit(1789321682.270:70): avc: denied { setattr } for pid=293 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=253 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 25.458373][ T24] audit: type=1400 audit(1789321682.270:71): avc: denied { create } for pid=293 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 [ 25.478806][ T24] audit: type=1400 audit(1789321682.270:72): avc: denied { write } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.495689][ T298] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 25.499506][ T24] audit: type=1400 audit(1789321682.270:73): avc: denied { read } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.538924][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 25.952894][ T300] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.960092][ T300] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.967659][ T300] device bridge_slave_0 entered promiscuous mode [ 25.974946][ T300] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.982187][ T300] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.989895][ T300] device bridge_slave_1 entered promiscuous mode [ 26.048257][ T300] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.055347][ T300] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.062708][ T300] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.069892][ T300] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.089594][ T112] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.096878][ T112] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.104525][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 26.113198][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.122111][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.130349][ T112] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.137442][ T112] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.146336][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.154733][ T112] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.161816][ T112] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.174267][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.183602][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.198187][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.209990][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.218129][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.225788][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.234215][ T300] device veth0_vlan entered promiscuous mode [ 26.244610][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.253721][ T300] device veth1_macvtap entered promiscuous mode [ 26.263427][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.273692][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.292492][ T300] request_module fs-gadgetfs succeeded, but still no fs? [ 26.303054][ T300] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 26.691537][ T112] device bridge_slave_1 left promiscuous mode [ 26.697736][ T112] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.709805][ T112] device bridge_slave_0 left promiscuous mode [ 26.716076][ T112] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.724586][ T112] device veth1_macvtap left promiscuous mode [ 26.730801][ T112] device veth0_vlan left promiscuous mode 2026/09/13 17:48:04 executed programs: 0 [ 27.276725][ T363] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.283879][ T363] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.291369][ T363] device bridge_slave_0 entered promiscuous mode [ 27.298230][ T363] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.305315][ T363] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.312648][ T363] device bridge_slave_1 entered promiscuous mode [ 27.358784][ T363] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.365872][ T363] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.373163][ T363] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.380209][ T363] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.406347][ T318] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.413917][ T318] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.421593][ T318] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.436678][ T318] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.444937][ T318] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.451977][ T318] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.460990][ T318] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.469155][ T318] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.476168][ T318] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.493856][ T318] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.503075][ T318] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.516050][ T318] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.533089][ T318] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.541395][ T318] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.549293][ T318] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.557651][ T363] device veth0_vlan entered promiscuous mode [ 27.574375][ T318] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.583436][ T363] device veth1_macvtap entered promiscuous mode [ 27.592567][ T318] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.605179][ T318] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.678660][ C1] ================================================================== [ 27.686920][ C1] BUG: KASAN: use-after-free in rcu_cblist_dequeue+0x6c/0xb0 [ 27.694421][ C1] Read of size 8 at addr ffff8881118b0990 by task kworker/u4:2/112 [ 27.702320][ C1] [ 27.704799][ C1] CPU: 1 PID: 112 Comm: kworker/u4:2 Not tainted syzkaller #0 [ 27.712272][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 27.722367][ C1] Workqueue: netns cleanup_net [ 27.727154][ C1] Call Trace: [ 27.730451][ C1] [ 27.733322][ C1] __dump_stack+0x21/0x24 [ 27.737664][ C1] dump_stack_lvl+0x1a7/0x208 [ 27.742361][ C1] ? show_regs_print_info+0x18/0x18 [ 27.747580][ C1] ? thaw_kernel_threads+0x220/0x220 [ 27.752886][ C1] print_address_description+0x7f/0x2c0 [ 27.758451][ C1] ? rcu_cblist_dequeue+0x6c/0xb0 [ 27.763490][ C1] kasan_report+0x100/0x140 [ 27.768003][ C1] ? rcu_cblist_dequeue+0x6c/0xb0 [ 27.773042][ C1] __asan_report_load8_noabort+0x14/0x20 [ 27.778700][ C1] rcu_cblist_dequeue+0x6c/0xb0 [ 27.783569][ C1] rcu_do_batch+0x448/0xaf0 [ 27.788085][ C1] ? local_bh_enable+0x20/0x20 [ 27.792875][ C1] ? note_gp_changes+0x140/0x230 [ 27.797832][ C1] rcu_core+0x50a/0xca0 [ 27.802002][ C1] ? rcu_cpu_kthread_park+0x90/0x90 [ 27.807222][ C1] ? run_rebalance_domains+0xf7/0x1c0 [ 27.812605][ C1] rcu_core_si+0x9/0x10 [ 27.816781][ C1] __do_softirq+0x255/0x563 [ 27.821293][ C1] ? __this_cpu_preempt_check+0x13/0x20 [ 27.826853][ C1] asm_call_irq_on_stack+0xf/0x20 [ 27.831881][ C1] [ 27.834831][ C1] do_softirq_own_stack+0x60/0x80 [ 27.839876][ C1] __irq_exit_rcu+0x128/0x150 [ 27.844569][ C1] irq_exit_rcu+0x9/0x10 [ 27.848850][ C1] sysvec_apic_timer_interrupt+0xbf/0xe0 [ 27.854501][ C1] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 27.860506][ C1] RIP: 0010:kasan_byte_accessible+0x16/0x20 [ 27.866406][ C1] Code: eb 96 bb 06 00 00 00 eb 89 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df 0f b6 04 07 <3c> 08 0f 92 c0 5d c3 0f 1f 00 55 48 89 e5 e8 b7 19 00 00 5d c3 0f [ 27.886031][ C1] RSP: 0018:ffffc90000cb7b28 EFLAGS: 00000a02 [ 27.892118][ C1] RAX: 0000000000000000 RBX: ffff88810ccb5540 RCX: ffff88810ccb5000 [ 27.900107][ C1] RDX: 0000000000000000 RSI: ffff88810ccb5540 RDI: 1ffff11021996aa8 [ 27.908092][ C1] RBP: ffffc90000cb7b28 R08: 0000000000000000 R09: ffffffff8100458f [ 27.916078][ C1] R10: 0000000000000001 R11: 00000000d2a9cac8 R12: 0000000000000001 [ 27.924064][ C1] R13: 0000000000000000 R14: ffff888100043b00 R15: ffffffff819eb640 [ 27.932056][ C1] ? kfree+0xc0/0x270 [ 27.936057][ C1] ? ret_from_fork+0x1f/0x30 [ 27.940670][ C1] ? kfree+0xc0/0x270 [ 27.944671][ C1] ____kasan_slab_free+0xef/0x160 [ 27.949714][ C1] __kasan_slab_free+0x11/0x20 [ 27.954497][ C1] slab_free_freelist_hook+0xc5/0x190 [ 27.959889][ C1] ? cleanup_net+0x787/0xb80 [ 27.964490][ C1] kfree+0xc0/0x270 [ 27.968316][ C1] cleanup_net+0x787/0xb80 [ 27.972763][ C1] ? ops_init+0x470/0x470 [ 27.977136][ C1] ? __kasan_check_read+0x11/0x20 [ 27.982172][ C1] ? read_word_at_a_time+0x12/0x20 [ 27.987289][ C1] ? strscpy+0x9b/0x290 [ 27.991458][ C1] process_one_work+0x6fd/0xbc0 [ 27.996339][ C1] worker_thread+0xa8e/0x13c0 [ 28.001027][ C1] ? __kthread_parkme+0xb3/0x1b0 [ 28.005971][ C1] kthread+0x324/0x3b0 [ 28.010046][ C1] ? worker_clr_flags+0x190/0x190 [ 28.015098][ C1] ? kthread_blkcg+0xd0/0xd0 [ 28.019695][ C1] ret_from_fork+0x1f/0x30 [ 28.024135][ C1] [ 28.026465][ C1] Allocated by task 401: [ 28.030722][ C1] __kasan_kmalloc+0xd4/0x100 [ 28.035411][ C1] __kmalloc+0x19f/0x330 [ 28.039653][ C1] l2tp_session_create+0x39/0xb60 [ 28.044686][ C1] pppol2tp_connect+0xbf5/0x1640 [ 28.049624][ C1] __sys_connect+0x3ce/0x450 [ 28.054213][ C1] __x64_sys_connect+0x7a/0x90 [ 28.058977][ C1] do_syscall_64+0x31/0x40 [ 28.063396][ C1] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.069286][ C1] [ 28.071625][ C1] Freed by task 318: [ 28.075536][ C1] kasan_set_track+0x4a/0x70 [ 28.080127][ C1] kasan_set_free_info+0x23/0x40 [ 28.085067][ C1] ____kasan_slab_free+0x125/0x160 [ 28.090180][ C1] __kasan_slab_free+0x11/0x20 [ 28.094944][ C1] slab_free_freelist_hook+0xc5/0x190 [ 28.100318][ C1] kfree+0xc0/0x270 [ 28.104131][ C1] l2tp_session_put+0xb2/0x1a0 [ 28.108900][ C1] l2tp_session_delete+0x3a9/0x4a0 [ 28.114010][ C1] l2tp_tunnel_del_work+0x180/0x3d0 [ 28.119210][ C1] process_one_work+0x6fd/0xbc0 [ 28.124070][ C1] worker_thread+0xa8e/0x13c0 [ 28.128753][ C1] kthread+0x324/0x3b0 [ 28.132826][ C1] ret_from_fork+0x1f/0x30 [ 28.137244][ C1] [ 28.139581][ C1] Last potentially related work creation: [ 28.145301][ C1] kasan_save_stack+0x3a/0x60 [ 28.149980][ C1] __kasan_record_aux_stack+0xd2/0x100 [ 28.155446][ C1] kasan_record_aux_stack_noalloc+0xb/0x10 [ 28.161255][ C1] call_rcu+0x11a/0x1090 [ 28.165506][ C1] pppol2tp_release+0x1e3/0x2b0 [ 28.170369][ C1] sock_close+0xb8/0x200 [ 28.174612][ C1] __fput+0x2dc/0x730 [ 28.178600][ C1] ____fput+0x15/0x20 [ 28.182585][ C1] task_work_run+0x127/0x190 [ 28.187176][ C1] exit_to_user_mode_loop+0xcb/0xe0 [ 28.192398][ C1] exit_to_user_mode_prepare+0x76/0xa0 [ 28.197873][ C1] syscall_exit_to_user_mode+0x1d/0x40 [ 28.203444][ C1] do_syscall_64+0x3d/0x40 [ 28.207953][ C1] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.213839][ C1] [ 28.216183][ C1] The buggy address belongs to the object at ffff8881118b0800 [ 28.216183][ C1] which belongs to the cache kmalloc-512 of size 512 [ 28.230240][ C1] The buggy address is located 400 bytes inside of [ 28.230240][ C1] 512-byte region [ffff8881118b0800, ffff8881118b0a00) [ 28.243508][ C1] The buggy address belongs to the page: [ 28.249170][ C1] page:ffffea0004462c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1118b0 [ 28.259407][ C1] head:ffffea0004462c00 order:2 compound_mapcount:0 compound_pincount:0 [ 28.267752][ C1] flags: 0x4000000000010200(slab|head) [ 28.273217][ C1] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 28.281993][ C1] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 28.290581][ C1] page dumped because: kasan: bad access detected [ 28.296998][ C1] page_owner tracks the page as allocated [ 28.302869][ C1] page last allocated via order 2, migratetype Unmovable, gfp_mask 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 112, ts 27628594881, free_ts 27627226016 [ 28.321178][ C1] prep_new_page+0x176/0x190 [ 28.325769][ C1] get_page_from_freelist+0x225f/0x23f0 [ 28.331327][ C1] __alloc_pages_nodemask+0x29a/0x640 [ 28.336700][ C1] new_slab+0x84/0x3f0 [ 28.340807][ C1] ___slab_alloc+0x2f8/0x4c0 [ 28.345404][ C1] __slab_alloc+0x63/0xa0 [ 28.349737][ C1] __kmalloc+0x1f9/0x330 [ 28.353987][ C1] ___neigh_create+0x6ec/0x1a70 [ 28.358840][ C1] __neigh_create+0x31/0x40 [ 28.363348][ C1] ip6_finish_output2+0x8fe/0x1540 [ 28.368461][ C1] __ip6_finish_output+0x5fd/0x790 [ 28.373579][ C1] ip6_finish_output+0x33/0x1e0 [ 28.378444][ C1] ip6_output+0x1fa/0x420 [ 28.382774][ C1] mld_sendpack+0x61e/0xb00 [ 28.387301][ C1] mld_ifc_timer_expire+0x862/0xc60 [ 28.392506][ C1] call_timer_fn+0x38/0x290 [ 28.397095][ C1] page last free stack trace: [ 28.401775][ C1] __free_pages_ok+0x80b/0x830 [ 28.406548][ C1] __free_pages+0xd8/0x390 [ 28.410990][ C1] __free_slab+0xcf/0x190 [ 28.415326][ C1] unfreeze_partials+0x150/0x180 [ 28.420263][ C1] put_cpu_partial+0xc1/0x180 [ 28.424969][ C1] __slab_free+0x2c9/0x3a0 [ 28.429395][ C1] ___cache_free+0x10e/0x130 [ 28.433988][ C1] qlink_free+0x50/0x90 [ 28.438146][ C1] qlist_free_all+0x5f/0xb0 [ 28.442657][ C1] kasan_quarantine_reduce+0x14a/0x160 [ 28.448122][ C1] __kasan_slab_alloc+0x2f/0xe0 [ 28.452974][ C1] slab_post_alloc_hook+0x5d/0x2f0 [ 28.458086][ C1] __kmalloc_track_caller+0x176/0x310 [ 28.463461][ C1] strndup_user+0x74/0x150 [ 28.467882][ C1] __se_sys_mount+0xdf/0x390 [ 28.472477][ C1] __x64_sys_mount+0xbf/0xd0 [ 28.477065][ C1] [ 28.479399][ C1] Memory state around the buggy address: [ 28.485058][ C1] ffff8881118b0880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.493124][ C1] ffff8881118b0900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.501213][ C1] >ffff8881118b0980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.509274][ C1] ^ [ 28.513891][ C1] ffff8881118b0a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.521956][ C1] ffff8881118b0a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.530018][ C1] ====