Warning: Permanently added '10.128.0.107' (ED25519) to the list of known hosts. 2026/10/02 15:19:40 parsed 1 programs 2026/10/02 15:19:40 serving rpc on tcp://42215 [ 30.333820][ T28] audit: type=1400 audit(1790954380.328:64): 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 [ 30.354710][ T28] audit: type=1400 audit(1790954380.328:65): 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 [ 31.204328][ T28] audit: type=1400 audit(1790954381.198:66): 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 [ 31.205484][ T300] cgroup: Unknown subsys name 'net' [ 31.228319][ T28] audit: type=1400 audit(1790954381.198:67): 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 [ 31.257557][ T28] audit: type=1400 audit(1790954381.248:68): 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 [ 31.257734][ T300] cgroup: Unknown subsys name 'devices' [ 31.404894][ T300] cgroup: Unknown subsys name 'hugetlb' [ 31.411084][ T300] cgroup: Unknown subsys name 'rlimit' [ 31.548761][ T28] audit: type=1400 audit(1790954381.538:69): 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 [ 31.573300][ T28] audit: type=1400 audit(1790954381.538:70): 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 [ 31.594013][ T28] audit: type=1400 audit(1790954381.538:71): 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 [ 31.602761][ T305] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 31.614463][ T28] audit: type=1400 audit(1790954381.538:72): 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 Setting up swapspace version 1, size = 127995904 bytes [ 31.643512][ T28] audit: type=1400 audit(1790954381.538:73): 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 [ 31.677477][ T300] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 32.468782][ T307] request_module fs-gadgetfs succeeded, but still no fs? [ 32.792153][ T324] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.799535][ T324] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.807937][ T324] device bridge_slave_0 entered promiscuous mode [ 32.816927][ T324] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.824490][ T324] bridge0: port 2(bridge_slave_1) entered disabled state [ 32.832077][ T324] device bridge_slave_1 entered promiscuous mode [ 32.871692][ T324] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.879081][ T324] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.887121][ T324] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.895319][ T324] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.917746][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.925276][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 32.932776][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 32.940371][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.949629][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 32.958414][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.965572][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.976402][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 32.984924][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.992109][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 33.005302][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 33.014694][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 33.030077][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 33.042359][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 33.050984][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 33.058771][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 33.069976][ T324] device veth0_vlan entered promiscuous mode [ 33.081582][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 33.091035][ T324] device veth1_macvtap entered promiscuous mode [ 33.101796][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 33.112363][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/10/02 15:19:43 executed programs: 0 [ 33.677057][ T369] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.684515][ T369] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.693669][ T369] device bridge_slave_0 entered promiscuous mode [ 33.703917][ T369] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.711796][ T369] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.720361][ T369] device bridge_slave_1 entered promiscuous mode [ 33.763404][ T369] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.770707][ T369] bridge0: port 2(bridge_slave_1) entered forwarding state [ 33.778020][ T369] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.785421][ T369] bridge0: port 1(bridge_slave_0) entered forwarding state [ 33.804182][ T8] device bridge_slave_1 left promiscuous mode [ 33.810866][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.818705][ T8] device bridge_slave_0 left promiscuous mode [ 33.825098][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.833252][ T8] device veth1_macvtap left promiscuous mode [ 33.839311][ T8] device veth0_vlan left promiscuous mode [ 33.926341][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.934228][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.944352][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 33.952027][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 33.962522][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 33.971449][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 33.979907][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.987284][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 33.998323][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 34.007307][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 34.016326][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.023568][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.035886][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 34.044017][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 34.053265][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 34.061423][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 34.075542][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 34.084406][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 34.096293][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 34.104523][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 34.113494][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 34.121333][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 34.130955][ T369] device veth0_vlan entered promiscuous mode [ 34.140973][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 34.149691][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 34.159112][ T369] device veth1_macvtap entered promiscuous mode [ 34.169896][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 34.177889][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 34.186517][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 34.206823][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 34.215769][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 34.231060][ T375] ================================================================== [ 34.239172][ T375] BUG: KASAN: use-after-free in rcu_segcblist_enqueue+0x9c/0xb0 [ 34.246802][ T375] Write of size 8 at addr ffff8881096b8d90 by task syz.2.17/375 [ 34.254419][ T375] [ 34.256732][ T375] CPU: 1 PID: 375 Comm: syz.2.17 Not tainted syzkaller #0 [ 34.264098][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 34.274360][ T375] Call Trace: [ 34.277642][ T375] [ 34.280641][ T375] __dump_stack+0x21/0x24 [ 34.285076][ T375] dump_stack_lvl+0x110/0x170 [ 34.289865][ T375] ? __cfi_dump_stack_lvl+0x8/0x8 [ 34.294998][ T375] ? rcu_segcblist_enqueue+0x9c/0xb0 [ 34.300290][ T375] print_address_description+0x71/0x200 [ 34.306007][ T375] print_report+0x4a/0x60 [ 34.310517][ T375] kasan_report+0x122/0x150 [ 34.315378][ T375] ? rcu_segcblist_enqueue+0x9c/0xb0 [ 34.320949][ T375] __asan_report_store8_noabort+0x17/0x20 [ 34.326684][ T375] rcu_segcblist_enqueue+0x9c/0xb0 [ 34.331940][ T375] call_rcu+0x554/0xf50 [ 34.336096][ T375] ? __cfi_call_rcu+0x10/0x10 [ 34.340988][ T375] ? __kasan_check_write+0x14/0x20 [ 34.346393][ T375] ? selinux_inode_free_security+0x21f/0x230 [ 34.352739][ T375] security_inode_free+0xc5/0xe0 [ 34.357885][ T375] __destroy_inode+0x175/0x500 [ 34.363325][ T375] evict+0x777/0x8c0 [ 34.367260][ T375] ? proc_nr_inodes+0x2f0/0x2f0 [ 34.372249][ T375] ? _raw_spin_lock+0x94/0xf0 [ 34.377112][ T375] ? __cfi__raw_spin_lock+0x10/0x10 [ 34.383450][ T375] ? __kasan_check_write+0x14/0x20 [ 34.388584][ T375] iput+0x633/0x690 [ 34.392411][ T375] dentry_unlink_inode+0x346/0x3f0 [ 34.397901][ T375] __dentry_kill+0x46c/0x680 [ 34.403303][ T375] dentry_kill+0xc0/0x2a0 [ 34.407760][ T375] dput+0x42/0x80 [ 34.411534][ T375] __fput+0x5c0/0x8f0 [ 34.416338][ T375] ____fput+0x15/0x20 [ 34.420629][ T375] task_work_run+0x1e1/0x250 [ 34.425406][ T375] ? __cfi_task_work_run+0x10/0x10 [ 34.430966][ T375] ? __cfi___close_range+0x10/0x10 [ 34.436082][ T375] exit_to_user_mode_loop+0x9b/0xb0 [ 34.441879][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 34.447859][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 34.453324][ T375] do_syscall_64+0x58/0xa0 [ 34.457884][ T375] ? clear_bhb_loop+0x30/0x80 [ 34.462853][ T375] ? clear_bhb_loop+0x30/0x80 [ 34.468234][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 34.474607][ T375] RIP: 0033:0x7f794699e159 [ 34.479037][ T375] 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 [ 34.498647][ T375] RSP: 002b:00007fff14ca7a38 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 34.507169][ T375] RAX: 0000000000000000 RBX: 00007fff14ca7b20 RCX: 00007f794699e159 [ 34.515583][ T375] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 34.523641][ T375] RBP: 000000000000859f R08: 0000000000000001 R09: 0000000000000000 [ 34.531876][ T375] R10: 0000001b33020000 R11: 0000000000000246 R12: 0000000000000000 [ 34.539847][ T375] R13: 00007f7946c25fac R14: 00007f7946c25fa8 R15: 00007f7946c25fa0 [ 34.547995][ T375] [ 34.551116][ T375] [ 34.553434][ T375] Allocated by task 375: [ 34.557667][ T375] kasan_set_track+0x4b/0x70 [ 34.562348][ T375] kasan_save_alloc_info+0x1f/0x30 [ 34.567557][ T375] __kasan_kmalloc+0x95/0xb0 [ 34.572192][ T375] __kmalloc+0xb4/0x1e0 [ 34.576353][ T375] l2tp_session_create+0x38/0xbd0 [ 34.581396][ T375] pppol2tp_connect+0xbf5/0x1640 [ 34.586444][ T375] __sys_connect+0x3da/0x460 [ 34.591081][ T375] __x64_sys_connect+0x7a/0x90 [ 34.595954][ T375] x64_sys_call+0x88d/0x9a0 [ 34.600553][ T375] do_syscall_64+0x4c/0xa0 [ 34.604997][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 34.611091][ T375] [ 34.613427][ T375] Freed by task 10: [ 34.617429][ T375] kasan_set_track+0x4b/0x70 [ 34.622134][ T375] kasan_save_free_info+0x2b/0x40 [ 34.627801][ T375] ____kasan_slab_free+0x132/0x180 [ 34.633061][ T375] __kasan_slab_free+0x11/0x20 [ 34.638022][ T375] slab_free_freelist_hook+0xc2/0x190 [ 34.643404][ T375] __kmem_cache_free+0xb7/0x1b0 [ 34.648931][ T375] kfree+0x6f/0xf0 [ 34.652765][ T375] l2tp_session_put+0xaf/0x1a0 [ 34.657552][ T375] l2tp_session_delete+0x3df/0x4d0 [ 34.663047][ T375] l2tp_tunnel_del_work+0x199/0x410 [ 34.668475][ T375] process_one_work+0x717/0xc30 [ 34.673412][ T375] worker_thread+0xa4d/0x11d0 [ 34.678494][ T375] kthread+0x281/0x320 [ 34.682605][ T375] ret_from_fork+0x1f/0x30 [ 34.687400][ T375] [ 34.690075][ T375] Last potentially related work creation: [ 34.696149][ T375] kasan_save_stack+0x3a/0x60 [ 34.700857][ T375] __kasan_record_aux_stack+0xb6/0xc0 [ 34.706975][ T375] kasan_record_aux_stack_noalloc+0xb/0x10 [ 34.713162][ T375] call_rcu+0xcf/0xf50 [ 34.717620][ T375] pppol2tp_release+0x1e3/0x2b0 [ 34.722879][ T375] sock_close+0xc9/0x220 [ 34.727248][ T375] __fput+0x1fd/0x8f0 [ 34.731431][ T375] ____fput+0x15/0x20 [ 34.735434][ T375] task_work_run+0x1e1/0x250 [ 34.740046][ T375] exit_to_user_mode_loop+0x9b/0xb0 [ 34.745418][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 34.751193][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 34.757748][ T375] do_syscall_64+0x58/0xa0 [ 34.762197][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 34.768938][ T375] [ 34.771364][ T375] The buggy address belongs to the object at ffff8881096b8c00 [ 34.771364][ T375] which belongs to the cache kmalloc-512 of size 512 [ 34.785604][ T375] The buggy address is located 400 bytes inside of [ 34.785604][ T375] 512-byte region [ffff8881096b8c00, ffff8881096b8e00) [ 34.798982][ T375] [ 34.801306][ T375] The buggy address belongs to the physical page: [ 34.807727][ T375] page:ffffea000425ae00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1096b8 [ 34.818335][ T375] head:ffffea000425ae00 order:2 compound_mapcount:0 compound_pincount:0 [ 34.826845][ T375] flags: 0x4000000000010200(slab|head|zone=1) [ 34.833211][ T375] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 34.841886][ T375] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 34.850996][ T375] page dumped because: kasan: bad access detected [ 34.858302][ T375] page_owner tracks the page as allocated [ 34.864303][ T375] 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 34225767043, free_ts 33232770283 [ 34.889764][ T375] post_alloc_hook+0x1f5/0x210 [ 34.895606][ T375] prep_new_page+0x1c/0x110 [ 34.900777][ T375] get_page_from_freelist+0x2ca9/0x2d20 [ 34.906794][ T375] __alloc_pages+0x1fa/0x610 [ 34.911506][ T375] alloc_slab_page+0x6e/0xf0 [ 34.916796][ T375] new_slab+0x98/0x3e0 [ 34.920887][ T375] ___slab_alloc+0x70f/0xb70 [ 34.925729][ T375] __slab_alloc+0x5e/0xa0 [ 34.930237][ T375] __kmem_cache_alloc_node+0x204/0x2d0 [ 34.935965][ T375] __kmalloc_node_track_caller+0xa1/0x1e0 [ 34.942125][ T375] __alloc_skb+0x226/0x4a0 [ 34.946596][ T375] inet_netconf_notify_devconf+0x169/0x220 [ 34.952425][ T375] devinet_exit_net+0x10e/0x220 [ 34.957287][ T375] cleanup_net+0x5b0/0xb10 [ 34.961795][ T375] process_one_work+0x717/0xc30 [ 34.967364][ T375] worker_thread+0xa4d/0x11d0 [ 34.972146][ T375] page last free stack trace: [ 34.976910][ T375] free_unref_page_prepare+0x81b/0x820 [ 34.982918][ T375] free_unref_page+0x93/0x530 [ 34.987997][ T375] __free_pages+0x67/0x100 [ 34.992539][ T375] free_pages+0x82/0x90 [ 34.996881][ T375] kasan_depopulate_vmalloc_pte+0x6b/0x90 [ 35.002798][ T375] __apply_to_page_range+0x8db/0xc80 [ 35.008098][ T375] apply_to_existing_page_range+0x38/0x50 [ 35.013823][ T375] kasan_release_vmalloc+0x97/0xb0 [ 35.018959][ T375] __purge_vmap_area_lazy+0xf09/0x1870 [ 35.024532][ T375] drain_vmap_area_work+0x3e/0xd0 [ 35.029562][ T375] process_one_work+0x717/0xc30 [ 35.034452][ T375] worker_thread+0xa4d/0x11d0 [ 35.039247][ T375] kthread+0x281/0x320 [ 35.043382][ T375] ret_from_fork+0x1f/0x30 [ 35.047901][ T375] [ 35.050224][ T375] Memory state around the buggy address: [ 35.055849][ T375] ffff8881096b8c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 35.064088][ T375] ffff8881096b8d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 35.072325][ T375] >ffff8881096b8d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 35.080645][ T375] ^ [ 35.085348][ T375] ffff8881096b8e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 35.093435][ T375] ffff8881096b8e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 35.101677][ T375] ================================================================== [ 35.109905][ T375] Disabling lock debugging due to kernel taint