Warning: Permanently added '10.128.0.17' (ED25519) to the list of known hosts. 2026/08/04 07:51:07 parsed 1 programs 2026/08/04 07:51:07 serving rpc on tcp://41557 [ 23.333824][ T28] audit: type=1400 audit(1785829867.862:64): avc: denied { node_bind } for pid=294 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 23.354896][ T28] audit: type=1400 audit(1785829867.862:65): avc: denied { module_request } for pid=294 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 [ 24.116250][ T28] audit: type=1400 audit(1785829868.642:66): avc: denied { mounton } for pid=300 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 [ 24.117303][ T300] cgroup: Unknown subsys name 'net' [ 24.139643][ T28] audit: type=1400 audit(1785829868.642:67): avc: denied { mount } for pid=300 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 [ 24.167065][ T28] audit: type=1400 audit(1785829868.672:68): avc: denied { unmount } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 24.167244][ T300] cgroup: Unknown subsys name 'devices' [ 24.314797][ T300] cgroup: Unknown subsys name 'hugetlb' [ 24.326251][ T300] cgroup: Unknown subsys name 'rlimit' [ 24.438530][ T28] audit: type=1400 audit(1785829868.962:69): avc: denied { setattr } for pid=300 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 [ 24.461855][ T28] audit: type=1400 audit(1785829868.962:70): avc: denied { create } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.482335][ T28] audit: type=1400 audit(1785829868.962:71): avc: denied { write } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.502607][ T28] audit: type=1400 audit(1785829868.962:72): avc: denied { read } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.519598][ T304] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). Setting up swapspace version 1, size = 127995904 bytes [ 24.522824][ T28] audit: type=1400 audit(1785829868.962:73): avc: denied { mounton } for pid=300 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 [ 24.574301][ T300] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 25.280081][ T307] request_module fs-gadgetfs succeeded, but still no fs? [ 25.491586][ T332] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.498705][ T332] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.506158][ T332] device bridge_slave_0 entered promiscuous mode [ 25.513154][ T332] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.520245][ T332] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.527788][ T332] device bridge_slave_1 entered promiscuous mode [ 25.565560][ T332] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.572617][ T332] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.579942][ T332] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.586987][ T332] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.604941][ T333] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.612237][ T333] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.619674][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 25.627510][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.636920][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.645225][ T333] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.652256][ T333] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.662077][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.670457][ T333] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.677551][ T333] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.688922][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.698651][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.713682][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.724589][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.732601][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.740700][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.749037][ T332] device veth0_vlan entered promiscuous mode [ 25.758539][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.768433][ T332] device veth1_macvtap entered promiscuous mode [ 25.777815][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.787581][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 25.815077][ T332] syz-executor (332) used greatest stack depth: 21024 bytes left 2026/08/04 07:51:10 executed programs: 0 [ 26.277529][ T369] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.284624][ T369] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.291937][ T369] device bridge_slave_0 entered promiscuous mode [ 26.298895][ T369] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.306056][ T369] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.313965][ T369] device bridge_slave_1 entered promiscuous mode [ 26.352422][ T369] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.359487][ T369] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.366791][ T369] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.373837][ T369] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.390426][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.398020][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.405578][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.418841][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.427038][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.434140][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.442748][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.452436][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.459504][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.476834][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.486353][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 26.494616][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.510246][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 26.518898][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.530588][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 26.539162][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.547631][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.555593][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.564596][ T369] device veth0_vlan entered promiscuous mode [ 26.577150][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 26.585837][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.595350][ T369] device veth1_macvtap entered promiscuous mode [ 26.604316][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 26.612066][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 26.620450][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.630129][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 26.638574][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.693682][ C0] ================================================================== [ 26.701776][ C0] BUG: KASAN: use-after-free in rcu_cblist_dequeue+0x6c/0xb0 [ 26.709205][ C0] Read of size 8 at addr ffff8881216aad90 by task ksoftirqd/0/13 [ 26.717109][ C0] [ 26.719451][ C0] CPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted syzkaller #0 [ 26.726739][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 26.736951][ C0] Call Trace: [ 26.740278][ C0] [ 26.743222][ C0] __dump_stack+0x21/0x24 [ 26.747580][ C0] dump_stack_lvl+0x110/0x170 [ 26.752376][ C0] ? __cfi_dump_stack_lvl+0x8/0x8 [ 26.757426][ C0] ? debug_smp_processor_id+0x17/0x20 [ 26.762843][ C0] ? rcu_cblist_dequeue+0x6c/0xb0 [ 26.767883][ C0] print_address_description+0x71/0x200 [ 26.773480][ C0] print_report+0x4a/0x60 [ 26.777826][ C0] kasan_report+0x122/0x150 [ 26.782357][ C0] ? rcu_cblist_dequeue+0x6c/0xb0 [ 26.787443][ C0] __asan_report_load8_noabort+0x14/0x20 [ 26.793126][ C0] rcu_cblist_dequeue+0x6c/0xb0 [ 26.798001][ C0] rcu_do_batch+0x4bc/0xc30 [ 26.802531][ C0] ? rcu_core+0xf00/0xf00 [ 26.806878][ C0] ? swake_up_one_online+0x66/0x110 [ 26.812096][ C0] ? rcu_report_qs_rnp+0x37b/0x390 [ 26.817214][ C0] rcu_core+0x486/0xf00 [ 26.821376][ C0] ? rcu_cpu_kthread_park+0x90/0x90 [ 26.826714][ C0] ? __this_cpu_preempt_check+0x13/0x20 [ 26.832275][ C0] ? rcu_softirq_qs+0xd5/0x340 [ 26.837091][ C0] ? __cfi_rcu_softirq_qs+0x10/0x10 [ 26.842291][ C0] ? irqtime_account_irq+0x75/0x240 [ 26.847574][ C0] rcu_core_si+0x9/0x10 [ 26.851753][ C0] handle_softirqs+0x1d7/0x600 [ 26.856526][ C0] ? __cfi_run_ksoftirqd+0x10/0x10 [ 26.861636][ C0] run_ksoftirqd+0x28/0x30 [ 26.866050][ C0] smpboot_thread_fn+0x48c/0x8e0 [ 26.871024][ C0] kthread+0x281/0x320 [ 26.875087][ C0] ? __cfi_smpboot_thread_fn+0x10/0x10 [ 26.880546][ C0] ? __cfi_kthread+0x10/0x10 [ 26.885229][ C0] ret_from_fork+0x1f/0x30 [ 26.889783][ C0] [ 26.892795][ C0] [ 26.895104][ C0] Allocated by task 374: [ 26.899327][ C0] kasan_set_track+0x4b/0x70 [ 26.903914][ C0] kasan_save_alloc_info+0x1f/0x30 [ 26.909653][ C0] __kasan_kmalloc+0x95/0xb0 [ 26.914254][ C0] __kmalloc+0xb4/0x1e0 [ 26.918404][ C0] l2tp_session_create+0x38/0xbd0 [ 26.923422][ C0] pppol2tp_connect+0xbf5/0x1640 [ 26.928351][ C0] __sys_connect+0x3da/0x460 [ 26.932932][ C0] __x64_sys_connect+0x7a/0x90 [ 26.937691][ C0] x64_sys_call+0x88d/0x9a0 [ 26.942193][ C0] do_syscall_64+0x4c/0xa0 [ 26.946601][ C0] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.952503][ C0] [ 26.954831][ C0] Freed by task 333: [ 26.958706][ C0] kasan_set_track+0x4b/0x70 [ 26.963392][ C0] kasan_save_free_info+0x2b/0x40 [ 26.968417][ C0] ____kasan_slab_free+0x132/0x180 [ 26.973526][ C0] __kasan_slab_free+0x11/0x20 [ 26.978283][ C0] slab_free_freelist_hook+0xc2/0x190 [ 26.983644][ C0] __kmem_cache_free+0xb7/0x1b0 [ 26.988489][ C0] kfree+0x6f/0xf0 [ 26.992257][ C0] l2tp_session_put+0xaf/0x1a0 [ 26.997009][ C0] l2tp_session_delete+0x3df/0x4d0 [ 27.002110][ C0] l2tp_tunnel_del_work+0x199/0x410 [ 27.007324][ C0] process_one_work+0x717/0xc30 [ 27.012166][ C0] worker_thread+0xa4d/0x11d0 [ 27.016860][ C0] kthread+0x281/0x320 [ 27.021095][ C0] ret_from_fork+0x1f/0x30 [ 27.025700][ C0] [ 27.028098][ C0] Last potentially related work creation: [ 27.033798][ C0] kasan_save_stack+0x3a/0x60 [ 27.038473][ C0] __kasan_record_aux_stack+0xb6/0xc0 [ 27.043857][ C0] kasan_record_aux_stack_noalloc+0xb/0x10 [ 27.049652][ C0] call_rcu+0xcf/0xf50 [ 27.053728][ C0] pppol2tp_release+0x1e3/0x2b0 [ 27.058583][ C0] sock_close+0xc9/0x220 [ 27.063198][ C0] __fput+0x1fd/0x8f0 [ 27.067221][ C0] ____fput+0x15/0x20 [ 27.071208][ C0] task_work_run+0x1e1/0x250 [ 27.075797][ C0] exit_to_user_mode_loop+0x9b/0xb0 [ 27.081015][ C0] exit_to_user_mode_prepare+0x87/0xd0 [ 27.086465][ C0] syscall_exit_to_user_mode+0x1a/0x30 [ 27.091917][ C0] do_syscall_64+0x58/0xa0 [ 27.096329][ C0] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 27.102221][ C0] [ 27.104535][ C0] The buggy address belongs to the object at ffff8881216aac00 [ 27.104535][ C0] which belongs to the cache kmalloc-512 of size 512 [ 27.118572][ C0] The buggy address is located 400 bytes inside of [ 27.118572][ C0] 512-byte region [ffff8881216aac00, ffff8881216aae00) [ 27.131942][ C0] [ 27.134257][ C0] The buggy address belongs to the physical page: [ 27.140661][ C0] page:ffffea000485aa00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1216a8 [ 27.150977][ C0] head:ffffea000485aa00 order:2 compound_mapcount:0 compound_pincount:0 [ 27.159292][ C0] flags: 0x4000000000010200(slab|head|zone=1) [ 27.165542][ C0] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 27.174202][ C0] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 27.182793][ C0] page dumped because: kasan: bad access detected [ 27.189194][ C0] page_owner tracks the page as allocated [ 27.194912][ C0] 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 369, tgid 369 (syz-executor), ts 26654956209, free_ts 26013524660 [ 27.217656][ C0] post_alloc_hook+0x1f5/0x210 [ 27.222439][ C0] prep_new_page+0x1c/0x110 [ 27.226933][ C0] get_page_from_freelist+0x2ca9/0x2d20 [ 27.232579][ C0] __alloc_pages+0x1fa/0x610 [ 27.237196][ C0] alloc_slab_page+0x6e/0xf0 [ 27.241820][ C0] new_slab+0x98/0x3e0 [ 27.245886][ C0] ___slab_alloc+0x70f/0xb70 [ 27.250472][ C0] __slab_alloc+0x5e/0xa0 [ 27.254801][ C0] __kmem_cache_alloc_node+0x204/0x2d0 [ 27.260265][ C0] kmalloc_trace+0x29/0xb0 [ 27.264680][ C0] find_css_set+0x937/0x15c0 [ 27.269288][ C0] cgroup_migrate_prepare_dst+0xc4/0xa00 [ 27.274925][ C0] cgroup_attach_task+0x298/0x520 [ 27.279954][ C0] __cgroup_procs_write+0x2b1/0x2e0 [ 27.285138][ C0] cgroup_procs_write+0x27/0x50 [ 27.289979][ C0] cgroup_file_write+0x2a2/0x590 [ 27.294926][ C0] page last free stack trace: [ 27.299580][ C0] free_unref_page_prepare+0x80c/0x820 [ 27.305032][ C0] free_unref_page+0x93/0x530 [ 27.309708][ C0] __free_pages+0x67/0x100 [ 27.314129][ C0] __vunmap+0xa3c/0xc00 [ 27.318274][ C0] vfree+0x61/0x90 [ 27.322081][ C0] kcov_close+0x2b/0x50 [ 27.326235][ C0] __fput+0x1fd/0x8f0 [ 27.330232][ C0] ____fput+0x15/0x20 [ 27.334209][ C0] task_work_run+0x1e1/0x250 [ 27.338790][ C0] do_exit+0xaf2/0x2850 [ 27.342938][ C0] do_group_exit+0x21b/0x2e0 [ 27.347605][ C0] get_signal+0x167c/0x1700 [ 27.352199][ C0] arch_do_signal_or_restart+0xd1/0x11c0 [ 27.357840][ C0] exit_to_user_mode_loop+0x7a/0xb0 [ 27.363028][ C0] exit_to_user_mode_prepare+0x87/0xd0 [ 27.368510][ C0] syscall_exit_to_user_mode+0x1a/0x30 [ 27.373977][ C0] [ 27.376651][ C0] Memory state around the buggy address: [ 27.382264][ C0] ffff8881216aac80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.390315][ C0] ffff8881216aad00: fb fb fb fb fb fb fb fb fb fb fb