Warning: Permanently added '10.128.0.195' (ED25519) to the list of known hosts. 2026/08/08 17:37:54 parsed 1 programs 2026/08/08 17:37:54 serving rpc on tcp://36961 [ 23.108463][ T28] audit: type=1400 audit(1786210674.707:64): 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 [ 23.129301][ T28] audit: type=1400 audit(1786210674.707:65): 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 [ 23.892658][ T28] audit: type=1400 audit(1786210675.497:66): avc: denied { mounton } for pid=303 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 [ 23.893738][ T303] cgroup: Unknown subsys name 'net' [ 23.915517][ T28] audit: type=1400 audit(1786210675.497:67): avc: denied { mount } for pid=303 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 [ 23.943150][ T28] audit: type=1400 audit(1786210675.527:68): avc: denied { unmount } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 23.943334][ T303] cgroup: Unknown subsys name 'devices' [ 24.083550][ T303] cgroup: Unknown subsys name 'hugetlb' [ 24.089335][ T303] cgroup: Unknown subsys name 'rlimit' [ 24.197100][ T28] audit: type=1400 audit(1786210675.797:69): avc: denied { setattr } for pid=303 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 [ 24.220488][ T28] audit: type=1400 audit(1786210675.797:70): avc: denied { create } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.241363][ T28] audit: type=1400 audit(1786210675.797:71): avc: denied { write } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.250226][ T305] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 24.261810][ T28] audit: type=1400 audit(1786210675.797:72): avc: denied { read } for pid=303 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 [ 24.290719][ T28] audit: type=1400 audit(1786210675.797:73): avc: denied { mounton } for pid=303 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 [ 24.334923][ T303] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 25.045442][ T307] request_module fs-gadgetfs succeeded, but still no fs? [ 25.289591][ T323] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.296698][ T323] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.304841][ T323] device bridge_slave_0 entered promiscuous mode [ 25.312715][ T323] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.319842][ T323] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.327836][ T323] device bridge_slave_1 entered promiscuous mode [ 25.363992][ T323] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.371054][ T323] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.378377][ T323] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.385443][ T323] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.404293][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.412621][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.420132][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 25.427734][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.437794][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.446268][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.453328][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.463903][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.472205][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.479223][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.491980][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.501455][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.515099][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.526975][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.535182][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.543740][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.551971][ T323] device veth0_vlan entered promiscuous mode [ 25.561685][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.571951][ T323] device veth1_macvtap entered promiscuous mode [ 25.580788][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.590709][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 25.627138][ T323] syz-executor (323) used greatest stack depth: 22112 bytes left 2026/08/08 17:37:57 executed programs: 0 [ 26.186915][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.194170][ T370] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.201715][ T370] device bridge_slave_0 entered promiscuous mode [ 26.208673][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.215793][ T370] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.223337][ T370] device bridge_slave_1 entered promiscuous mode [ 26.266263][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.273344][ T370] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.280651][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.287739][ T370] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.308878][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.316847][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.325359][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.335173][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 26.343925][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.352354][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.359503][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.368060][ T43] device bridge_slave_1 left promiscuous mode [ 26.374419][ T43] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.381937][ T43] device bridge_slave_0 left promiscuous mode [ 26.388079][ T43] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.396372][ T43] device veth1_macvtap left promiscuous mode [ 26.402801][ T43] device veth0_vlan left promiscuous mode [ 26.477266][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 26.485710][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.494149][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.501679][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.515199][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 26.523715][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.532137][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 26.540180][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.553609][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 26.561988][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.572861][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 26.580918][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.589680][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.597482][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.605685][ T370] device veth0_vlan entered promiscuous mode [ 26.615181][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 26.623500][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.632613][ T370] device veth1_macvtap entered promiscuous mode [ 26.642234][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 26.650001][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 26.658606][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.668081][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 26.677129][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.703311][ T375] ================================================================== [ 26.711421][ T375] BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 [ 26.718389][ T375] Write of size 8 at addr ffff888121885d50 by task syz.2.17/375 [ 26.726016][ T375] [ 26.728351][ T375] CPU: 0 PID: 375 Comm: syz.2.17 Not tainted syzkaller #0 [ 26.735623][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 26.745685][ T375] Call Trace: [ 26.749054][ T375] [ 26.751993][ T375] __dump_stack+0x21/0x24 [ 26.756341][ T375] dump_stack_lvl+0x110/0x170 [ 26.761271][ T375] ? __cfi_dump_stack_lvl+0x8/0x8 [ 26.766305][ T375] ? mutex_lock+0x86/0x1b0 [ 26.770901][ T375] print_address_description+0x71/0x200 [ 26.776466][ T375] print_report+0x4a/0x60 [ 26.780872][ T375] kasan_report+0x122/0x150 [ 26.785372][ T375] ? mutex_lock+0x86/0x1b0 [ 26.789817][ T375] kasan_check_range+0x249/0x2a0 [ 26.794752][ T375] __kasan_check_write+0x14/0x20 [ 26.799772][ T375] mutex_lock+0x86/0x1b0 [ 26.804021][ T375] ? __cfi_mutex_lock+0x10/0x10 [ 26.808872][ T375] ? kfree+0x6f/0xf0 [ 26.812758][ T375] ? l2tp_session_put+0xaf/0x1a0 [ 26.817687][ T375] ? l2tp_session_delete+0x3df/0x4d0 [ 26.822964][ T375] pppol2tp_release+0x178/0x2b0 [ 26.827850][ T375] sock_close+0xc9/0x220 [ 26.832101][ T375] ? __cfi_sock_close+0x10/0x10 [ 26.836950][ T375] __fput+0x1fd/0x8f0 [ 26.840959][ T375] ____fput+0x15/0x20 [ 26.844940][ T375] task_work_run+0x1e1/0x250 [ 26.849558][ T375] ? __cfi_task_work_run+0x10/0x10 [ 26.854674][ T375] ? __cfi___close_range+0x10/0x10 [ 26.859794][ T375] exit_to_user_mode_loop+0x9b/0xb0 [ 26.865006][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 26.870477][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 26.876036][ T375] do_syscall_64+0x58/0xa0 [ 26.880546][ T375] ? clear_bhb_loop+0x30/0x80 [ 26.885253][ T375] ? clear_bhb_loop+0x30/0x80 [ 26.889971][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.895865][ T375] RIP: 0033:0x7f194079e0d9 [ 26.900289][ 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 [ 26.920147][ T375] RSP: 002b:00007ffc0e9f9148 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 26.929012][ T375] RAX: 0000000000000000 RBX: 00007ffc0e9f9230 RCX: 00007f194079e0d9 [ 26.937006][ T375] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 26.944974][ T375] RBP: 0000000000006838 R08: 0000000000000001 R09: 0000000000000000 [ 26.952938][ T375] R10: 0000001b33120000 R11: 0000000000000246 R12: 0000000000000000 [ 26.962117][ T375] R13: 00007f1940a25fac R14: 00007f1940a25fa8 R15: 00007f1940a25fa0 [ 26.970138][ T375] [ 26.973158][ T375] [ 26.975532][ T375] Allocated by task 375: [ 26.979774][ T375] kasan_set_track+0x4b/0x70 [ 26.984486][ T375] kasan_save_alloc_info+0x1f/0x30 [ 26.989694][ T375] __kasan_kmalloc+0x95/0xb0 [ 26.994306][ T375] __kmalloc+0xb4/0x1e0 [ 26.998570][ T375] l2tp_session_create+0x38/0xbd0 [ 27.003688][ T375] pppol2tp_connect+0xbf5/0x1640 [ 27.008703][ T375] __sys_connect+0x3da/0x460 [ 27.013290][ T375] __x64_sys_connect+0x7a/0x90 [ 27.018065][ T375] x64_sys_call+0x88d/0x9a0 [ 27.022577][ T375] do_syscall_64+0x4c/0xa0 [ 27.027082][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 27.032979][ T375] [ 27.035322][ T375] Freed by task 375: [ 27.039200][ T375] kasan_set_track+0x4b/0x70 [ 27.043783][ T375] kasan_save_free_info+0x2b/0x40 [ 27.048809][ T375] ____kasan_slab_free+0x132/0x180 [ 27.053918][ T375] __kasan_slab_free+0x11/0x20 [ 27.058677][ T375] slab_free_freelist_hook+0xc2/0x190 [ 27.064037][ T375] __kmem_cache_free+0xb7/0x1b0 [ 27.068888][ T375] kfree+0x6f/0xf0 [ 27.072695][ T375] l2tp_session_put+0xaf/0x1a0 [ 27.077451][ T375] l2tp_session_delete+0x3df/0x4d0 [ 27.082562][ T375] pppol2tp_release+0x169/0x2b0 [ 27.087441][ T375] sock_close+0xc9/0x220 [ 27.091681][ T375] __fput+0x1fd/0x8f0 [ 27.095655][ T375] ____fput+0x15/0x20 [ 27.099628][ T375] task_work_run+0x1e1/0x250 [ 27.104247][ T375] exit_to_user_mode_loop+0x9b/0xb0 [ 27.109960][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 27.115410][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 27.120947][ T375] do_syscall_64+0x58/0xa0 [ 27.125391][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 27.131277][ T375] [ 27.133594][ T375] The buggy address belongs to the object at ffff888121885c00 [ 27.133594][ T375] which belongs to the cache kmalloc-512 of size 512 [ 27.147641][ T375] The buggy address is located 336 bytes inside of [ 27.147641][ T375] 512-byte region [ffff888121885c00, ffff888121885e00) [ 27.161093][ T375] [ 27.163414][ T375] The buggy address belongs to the physical page: [ 27.169818][ T375] page:ffffea0004862100 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x121884 [ 27.180048][ T375] head:ffffea0004862100 order:2 compound_mapcount:0 compound_pincount:0 [ 27.188365][ T375] flags: 0x4000000000010200(slab|head|zone=1) [ 27.194446][ T375] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 27.203028][ T375] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 27.211599][ T375] page dumped because: kasan: bad access detected [ 27.218002][ T375] page_owner tracks the page as allocated [ 27.223716][ 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 43, tgid 43 (kworker/u4:2), ts 26697877544, free_ts 25939270180 [ 27.246109][ T375] post_alloc_hook+0x1f5/0x210 [ 27.251317][ T375] prep_new_page+0x1c/0x110 [ 27.255859][ T375] get_page_from_freelist+0x2ca9/0x2d20 [ 27.261407][ T375] __alloc_pages+0x1fa/0x610 [ 27.266011][ T375] alloc_slab_page+0x6e/0xf0 [ 27.270679][ T375] new_slab+0x98/0x3e0 [ 27.275518][ T375] ___slab_alloc+0x70f/0xb70 [ 27.280107][ T375] __slab_alloc+0x5e/0xa0 [ 27.284433][ T375] __kmem_cache_alloc_node+0x204/0x2d0 [ 27.289900][ T375] __kmalloc_node_track_caller+0xa1/0x1e0 [ 27.295652][ T375] __alloc_skb+0x226/0x4a0 [ 27.300082][ T375] inet_netconf_notify_devconf+0x169/0x220 [ 27.305903][ T375] devinet_exit_net+0x10e/0x220 [ 27.310748][ T375] cleanup_net+0x5b0/0xb10 [ 27.315160][ T375] process_one_work+0x717/0xc30 [ 27.320112][ T375] worker_thread+0xa4d/0x11d0 [ 27.325928][ T375] page last free stack trace: [ 27.330600][ T375] free_unref_page_prepare+0x80c/0x820 [ 27.336055][ T375] free_unref_page+0x93/0x530 [ 27.340723][ T375] __free_pages+0x67/0x100 [ 27.345162][ T375] __vunmap+0xa3c/0xc00 [ 27.349307][ T375] vfree+0x61/0x90 [ 27.353018][ T375] kcov_close+0x2b/0x50 [ 27.357169][ T375] __fput+0x1fd/0x8f0 [ 27.361144][ T375] ____fput+0x15/0x20 [ 27.365124][ T375] task_work_run+0x1e1/0x250 [ 27.369711][ T375] do_exit+0xaf2/0x2850 [ 27.373876][ T375] do_group_exit+0x21b/0x2e0 [ 27.378471][ T375] get_signal+0x167c/0x1700 [ 27.382982][ T375] arch_do_signal_or_restart+0xd1/0x11c0 [ 27.388609][ T375] exit_to_user_mode_loop+0x7a/0xb0 [ 27.393807][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 27.399344][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 27.404814][ T375] [ 27.407125][ T375] Memory state around the buggy address: [ 27.412743][ T375] ffff888121885c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.420789][ T375] ffff888121885c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.428846][ T375] >ffff888121885d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.436894][ T375] ^ [ 27.443563][ T375] ffff888121885d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.451611][ T375] ffff888121885e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.459883][ T375] ================================================================== [ 27.474834][ T375] Disabling lock debugging due to kernel taint