Warning: Permanently added '10.128.0.41' (ED25519) to the list of known hosts. 2026/07/23 22:56:03 parsed 1 programs 2026/07/23 22:56:03 serving rpc on tcp://45713 [ 29.748705][ T24] audit: type=1400 audit(1784847363.230:64): 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 [ 29.769893][ T24] audit: type=1400 audit(1784847363.230:65): 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 [ 29.789458][ T24] audit: type=1400 audit(1784847363.240:66): 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 [ 30.689885][ T24] audit: type=1400 audit(1784847364.170:67): 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 [ 30.693034][ T293] cgroup: Unknown subsys name 'net' [ 30.712722][ T24] audit: type=1400 audit(1784847364.180:68): 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 [ 30.739854][ T24] audit: type=1400 audit(1784847364.210:69): 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 [ 30.740291][ T293] cgroup: Unknown subsys name 'devices' [ 30.882264][ T293] cgroup: Unknown subsys name 'hugetlb' [ 30.887978][ T293] cgroup: Unknown subsys name 'rlimit' [ 31.036429][ T24] audit: type=1400 audit(1784847364.520:70): 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 [ 31.059615][ T24] audit: type=1400 audit(1784847364.520:71): 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 [ 31.080059][ T24] audit: type=1400 audit(1784847364.520:72): 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 [ 31.098131][ T297] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 31.100538][ T24] audit: type=1400 audit(1784847364.520:73): 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 [ 31.143304][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 31.552425][ T300] request_module fs-gadgetfs succeeded, but still no fs? [ 31.563380][ T300] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 31.854409][ T323] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.861560][ T323] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.868912][ T323] device bridge_slave_0 entered promiscuous mode [ 31.875883][ T323] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.883025][ T323] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.890519][ T323] device bridge_slave_1 entered promiscuous mode [ 31.930651][ T323] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.937705][ T323] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.947174][ T323] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.954232][ T323] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.973254][ T324] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.980564][ T324] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.987881][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 31.995706][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.005633][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 32.013909][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.020975][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.029591][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 32.037845][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.044889][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.061239][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 32.069220][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 32.084680][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 32.095718][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 32.104163][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 32.111661][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 32.120025][ T323] device veth0_vlan entered promiscuous mode [ 32.129887][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 32.139592][ T323] device veth1_macvtap entered promiscuous mode [ 32.149590][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 32.159613][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/07/23 22:56:06 executed programs: 0 [ 32.778074][ T364] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.785599][ T364] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.793379][ T364] device bridge_slave_0 entered promiscuous mode [ 32.800414][ T364] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.807564][ T364] bridge0: port 2(bridge_slave_1) entered disabled state [ 32.815398][ T364] device bridge_slave_1 entered promiscuous mode [ 32.868200][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 32.875865][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.886790][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 32.895148][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 32.903318][ T324] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.910335][ T324] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.917903][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 32.926826][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 32.935217][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 32.943634][ T324] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.950700][ T324] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.961975][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 32.970020][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 32.978863][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 32.987050][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 32.999645][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 33.008179][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 33.021292][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 33.029252][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 33.037842][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 33.045414][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 33.053846][ T364] device veth0_vlan entered promiscuous mode [ 33.064549][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 33.072799][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 33.081942][ T364] device veth1_macvtap entered promiscuous mode [ 33.092361][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 33.100968][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 33.110141][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 33.118512][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 33.191330][ T387] ================================================================== [ 33.199468][ T387] BUG: KASAN: use-after-free in pppol2tp_sock_to_session+0x1a0/0x1b0 [ 33.207553][ T387] Read of size 4 at addr ffff888110da9c00 by task syz.2.17/387 [ 33.215097][ T387] [ 33.217486][ T387] CPU: 1 PID: 387 Comm: syz.2.17 Not tainted syzkaller #0 [ 33.224608][ T387] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 33.234683][ T387] Call Trace: [ 33.237988][ T387] __dump_stack+0x21/0x24 [ 33.242334][ T387] dump_stack_lvl+0x1a7/0x208 [ 33.247021][ T387] ? show_regs_print_info+0x18/0x18 [ 33.252234][ T387] ? thaw_kernel_threads+0x220/0x220 [ 33.257539][ T387] ? __local_bh_enable_ip+0x53/0x80 [ 33.262756][ T387] print_address_description+0x7f/0x2c0 [ 33.268319][ T387] ? pppol2tp_sock_to_session+0x1a0/0x1b0 [ 33.274052][ T387] kasan_report+0x100/0x140 [ 33.278567][ T387] ? pppol2tp_sock_to_session+0x1a0/0x1b0 [ 33.284300][ T387] __asan_report_load4_noabort+0x14/0x20 [ 33.289945][ T387] pppol2tp_sock_to_session+0x1a0/0x1b0 [ 33.295513][ T387] pppol2tp_release+0x150/0x2b0 [ 33.300380][ T387] sock_close+0xb8/0x200 [ 33.304638][ T387] ? sock_mmap+0xa0/0xa0 [ 33.308905][ T387] __fput+0x2dc/0x730 [ 33.312922][ T387] ____fput+0x15/0x20 [ 33.316957][ T387] task_work_run+0x127/0x190 [ 33.321564][ T387] do_exit+0xa7c/0x24e0 [ 33.325733][ T387] ? finish_task_switch+0x1b7/0x5a0 [ 33.330947][ T387] ? put_task_struct+0x90/0x90 [ 33.335727][ T387] ? remove_hrtimer+0x1aa/0x490 [ 33.340591][ T387] ? __kasan_check_write+0x14/0x20 [ 33.345717][ T387] ? _raw_spin_lock_irq+0x95/0xf0 [ 33.350752][ T387] do_group_exit+0x149/0x310 [ 33.355352][ T387] ? __kasan_check_write+0x14/0x20 [ 33.360476][ T387] ? recalc_sigpending+0x1c4/0x230 [ 33.365607][ T387] get_signal+0xfb1/0x1300 [ 33.370042][ T387] arch_do_signal_or_restart+0xe7/0x11b0 [ 33.375685][ T387] ? nanosleep_copyout+0x120/0x120 [ 33.380807][ T387] ? get_timespec64+0x116/0x1b0 [ 33.385666][ T387] ? __ia32_sys_rt_sigreturn+0x730/0x730 [ 33.391319][ T387] ? __x64_sys_clock_nanosleep+0xb0/0xb0 [ 33.396970][ T387] ? debug_smp_processor_id+0x17/0x20 [ 33.402355][ T387] exit_to_user_mode_loop+0xa2/0xe0 [ 33.407586][ T387] exit_to_user_mode_prepare+0x76/0xa0 [ 33.413066][ T387] syscall_exit_to_user_mode+0x1d/0x40 [ 33.418540][ T387] do_syscall_64+0x3d/0x40 [ 33.422980][ T387] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 33.428897][ T387] RIP: 0033:0x7f069e2bf6ce [ 33.433325][ T387] Code: Unable to access opcode bytes at RIP 0x7f069e2bf6a4. [ 33.440698][ T387] RSP: 002b:00007f069e15fe78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6 [ 33.449128][ T387] RAX: fffffffffffffdfc RBX: 00007f069e1606c0 RCX: 00007f069e2bf6ce [ 33.457119][ T387] RDX: 00007f069e15fed0 RSI: 0000000000000000 RDI: 0000000000000000 [ 33.465099][ T387] RBP: 00007f069e394eaf R08: 0000000000000000 R09: 0000000000000000 [ 33.473080][ T387] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 33.481060][ T387] R13: 00007f069e587038 R14: 00007f069e586fa0 R15: 00007ffec953d978 [ 33.489052][ T387] [ 33.491405][ T387] Allocated by task 386: [ 33.495674][ T387] __kasan_kmalloc+0xd4/0x100 [ 33.500360][ T387] __kmalloc+0x19f/0x330 [ 33.504620][ T387] l2tp_session_create+0x39/0xb60 [ 33.509660][ T387] pppol2tp_connect+0xbf5/0x1640 [ 33.514606][ T387] __sys_connect+0x3ce/0x450 [ 33.519202][ T387] __x64_sys_connect+0x7a/0x90 [ 33.523976][ T387] do_syscall_64+0x31/0x40 [ 33.528400][ T387] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 33.534294][ T387] [ 33.536629][ T387] Freed by task 324: [ 33.540534][ T387] kasan_set_track+0x4a/0x70 [ 33.545138][ T387] kasan_set_free_info+0x23/0x40 [ 33.550081][ T387] ____kasan_slab_free+0x125/0x160 [ 33.555206][ T387] __kasan_slab_free+0x11/0x20 [ 33.559979][ T387] slab_free_freelist_hook+0xc5/0x190 [ 33.565366][ T387] kfree+0xc0/0x270 [ 33.569184][ T387] l2tp_session_put+0xb2/0x1a0 [ 33.573959][ T387] l2tp_session_delete+0x3a9/0x4a0 [ 33.579074][ T387] l2tp_tunnel_del_work+0x180/0x3d0 [ 33.584272][ T387] process_one_work+0x6fd/0xbc0 [ 33.589127][ T387] worker_thread+0xa8e/0x13c0 [ 33.593806][ T387] kthread+0x324/0x3b0 [ 33.597877][ T387] ret_from_fork+0x1f/0x30 [ 33.602292][ T387] [ 33.604628][ T387] The buggy address belongs to the object at ffff888110da9c00 [ 33.604628][ T387] which belongs to the cache kmalloc-512 of size 512 [ 33.618688][ T387] The buggy address is located 0 bytes inside of [ 33.618688][ T387] 512-byte region [ffff888110da9c00, ffff888110da9e00) [ 33.631783][ T387] The buggy address belongs to the page: [ 33.637442][ T387] page:ffffea0004436a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x110da8 [ 33.647678][ T387] head:ffffea0004436a00 order:2 compound_mapcount:0 compound_pincount:0 [ 33.656009][ T387] flags: 0x4000000000010200(slab|head) [ 33.661479][ T387] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 33.670076][ T387] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 33.678657][ T387] page dumped because: kasan: bad access detected [ 33.685074][ T387] page_owner tracks the page as allocated [ 33.690819][ T387] 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 364, ts 33129786826, free_ts 33060122160 [ 33.711218][ T387] prep_new_page+0x176/0x190 [ 33.715830][ T387] get_page_from_freelist+0x225f/0x23f0 [ 33.721384][ T387] __alloc_pages_nodemask+0x29a/0x640 [ 33.726763][ T387] new_slab+0x84/0x3f0 [ 33.730836][ T387] ___slab_alloc+0x2f8/0x4c0 [ 33.735431][ T387] __slab_alloc+0x63/0xa0 [ 33.739866][ T387] __kmalloc_track_caller+0x1e4/0x310 [ 33.745255][ T387] __alloc_skb+0xdc/0x520 [ 33.749596][ T387] netlink_ack+0x35c/0xb30 [ 33.754031][ T387] netlink_rcv_skb+0x267/0x430 [ 33.758812][ T387] rtnetlink_rcv+0x1c/0x20 [ 33.763243][ T387] netlink_unicast+0x86c/0xa30 [ 33.768126][ T387] netlink_sendmsg+0x949/0xb70 [ 33.772899][ T387] __sys_sendto+0x467/0x620 [ 33.777410][ T387] __x64_sys_sendto+0xe5/0x100 [ 33.782181][ T387] do_syscall_64+0x31/0x40 [ 33.786598][ T387] page last free stack trace: [ 33.791289][ T387] __free_pages_ok+0x80b/0x830 [ 33.796063][ T387] __free_pages+0xd8/0x390 [ 33.800483][ T387] __free_slab+0xcf/0x190 [ 33.804820][ T387] unfreeze_partials+0x150/0x180 [ 33.809756][ T387] put_cpu_partial+0xc1/0x180 [ 33.814442][ T387] __slab_free+0x2c9/0x3a0 [ 33.818864][ T387] ___cache_free+0x10e/0x130 [ 33.823468][ T387] qlink_free+0x50/0x90 [ 33.827632][ T387] qlist_free_all+0x5f/0xb0 [ 33.832136][ T387] kasan_quarantine_reduce+0x14a/0x160 [ 33.837597][ T387] __kasan_slab_alloc+0x2f/0xe0 [ 33.842452][ T387] slab_post_alloc_hook+0x5d/0x2f0 [ 33.847568][ T387] kmem_cache_alloc+0x15a/0x2d0 [ 33.852430][ T387] __alloc_skb+0x9e/0x520 [ 33.856768][ T387] netlink_ack+0x35c/0xb30 [ 33.861191][ T387] netlink_rcv_skb+0x267/0x430 [ 33.865971][ T387] [ 33.868306][ T387] Memory state around the buggy address: [ 33.873951][ T387] ffff888110da9b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.882015][ T387] ffff888110da9b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.890080][ T387] >ffff888110da9c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.898146][ T387] ^ [ 33.902219][ T387] ffff888110da9c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.910282][ T387] ffff888110da9d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.918517][ T387] ================================================================== [ 33.926582][ T387] Disabling lock debugging due to kernel taint [ 33.938711][ T387] ------------[ cut here ]------------ [