Warning: Permanently added '10.128.1.49' (ED25519) to the list of known hosts. 2026/08/30 11:43:52 parsed 1 programs 2026/08/30 11:43:52 serving rpc on tcp://40049 [ 23.570972][ T30] audit: type=1400 audit(1788090232.912:64): avc: denied { node_bind } for pid=293 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 23.592607][ T30] audit: type=1400 audit(1788090232.912:65): avc: denied { module_request } for pid=293 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 [ 24.658830][ T30] audit: type=1400 audit(1788090234.002:66): avc: denied { mounton } for pid=299 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 [ 24.663346][ T299] cgroup: Unknown subsys name 'net' [ 24.682394][ T30] audit: type=1400 audit(1788090234.002:67): avc: denied { mount } for pid=299 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 [ 24.710566][ T30] audit: type=1400 audit(1788090234.042:68): avc: denied { unmount } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 24.711092][ T299] cgroup: Unknown subsys name 'devices' [ 24.825102][ T299] cgroup: Unknown subsys name 'hugetlb' [ 24.830889][ T299] cgroup: Unknown subsys name 'rlimit' [ 25.012525][ T30] audit: type=1400 audit(1788090234.352:69): avc: denied { setattr } for pid=299 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=254 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 25.036090][ T30] audit: type=1400 audit(1788090234.362:70): avc: denied { create } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.057372][ T30] audit: type=1400 audit(1788090234.362:71): avc: denied { write } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.080172][ T30] audit: type=1400 audit(1788090234.362:72): avc: denied { read } for pid=299 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 [ 25.101038][ T30] audit: type=1400 audit(1788090234.362:73): avc: denied { mounton } for pid=299 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 [ 25.114774][ T303] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 25.173627][ T299] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 25.637994][ T306] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.645486][ T306] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.653326][ T306] device bridge_slave_0 entered promiscuous mode [ 25.660732][ T306] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.667955][ T306] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.675554][ T306] device bridge_slave_1 entered promiscuous mode [ 25.739483][ T306] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.746708][ T306] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.754584][ T306] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.762202][ T306] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.782255][ T43] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.789597][ T43] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.797250][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 25.805397][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.815242][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.823688][ T43] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.831156][ T43] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.841315][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.849906][ T43] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.858379][ T43] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.872169][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.883532][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.899025][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.910815][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.919791][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.927876][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.936920][ T306] device veth0_vlan entered promiscuous mode [ 25.948247][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.957802][ T306] device veth1_macvtap entered promiscuous mode [ 25.967648][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.978070][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 25.997942][ T306] request_module fs-gadgetfs succeeded, but still no fs? [ 26.028252][ T306] syz-executor (306) used greatest stack depth: 20864 bytes left [ 26.497713][ T43] device bridge_slave_1 left promiscuous mode [ 26.504208][ T43] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.521106][ T43] device bridge_slave_0 left promiscuous mode [ 26.527846][ T43] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.536659][ T43] device veth1_macvtap left promiscuous mode [ 26.542825][ T43] device veth0_vlan left promiscuous mode 2026/08/30 11:43:56 executed programs: 0 [ 27.007278][ T366] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.015263][ T366] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.022857][ T366] device bridge_slave_0 entered promiscuous mode [ 27.030285][ T366] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.037590][ T366] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.045413][ T366] device bridge_slave_1 entered promiscuous mode [ 27.089895][ T366] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.097080][ T366] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.104687][ T366] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.112214][ T366] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.132628][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.140955][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.148583][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.167080][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.175392][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.182526][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.191772][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.200162][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.207500][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.227370][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.236798][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.251577][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.264545][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.273396][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.281115][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.289052][ T366] device veth0_vlan entered promiscuous mode [ 27.309514][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.319005][ T366] device veth1_macvtap entered promiscuous mode [ 27.331572][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.350117][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.378242][ T370] ================================================================== [ 27.386614][ T370] BUG: KASAN: use-after-free in mutex_lock+0x8e/0x1c0 [ 27.393418][ T370] Write of size 8 at addr ffff8881103b1550 by task syz.2.17/370 [ 27.401360][ T370] [ 27.403703][ T370] CPU: 1 PID: 370 Comm: syz.2.17 Not tainted syzkaller #0 [ 27.410906][ T370] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 27.421381][ T370] Call Trace: [ 27.424671][ T370] [ 27.427910][ T370] __dump_stack+0x21/0x30 [ 27.432255][ T370] dump_stack_lvl+0x110/0x170 [ 27.437527][ T370] ? show_regs_print_info+0x20/0x20 [ 27.442752][ T370] ? load_image+0x3f0/0x3f0 [ 27.447394][ T370] print_address_description+0x7f/0x2c0 [ 27.452980][ T370] ? mutex_lock+0x8e/0x1c0 [ 27.457884][ T370] kasan_report+0x10f/0x150 [ 27.462607][ T370] ? mutex_lock+0x8e/0x1c0 [ 27.467144][ T370] kasan_check_range+0x249/0x2a0 [ 27.472103][ T370] __kasan_check_write+0x14/0x20 [ 27.477235][ T370] mutex_lock+0x8e/0x1c0 [ 27.481499][ T370] ? wait_for_completion_killable_timeout+0x10/0x10 [ 27.488316][ T370] ? l2tp_session_put+0xaf/0x1a0 [ 27.493708][ T370] ? l2tp_session_delete+0x3a9/0x4a0 [ 27.499250][ T370] pppol2tp_release+0x178/0x2b0 [ 27.504168][ T370] sock_close+0xb8/0x200 [ 27.508421][ T370] ? sock_mmap+0xa0/0xa0 [ 27.512701][ T370] __fput+0x22b/0x900 [ 27.516725][ T370] ____fput+0x15/0x20 [ 27.520910][ T370] task_work_run+0x127/0x190 [ 27.525506][ T370] exit_to_user_mode_loop+0xd0/0xe0 [ 27.530739][ T370] exit_to_user_mode_prepare+0x87/0xd0 [ 27.536424][ T370] syscall_exit_to_user_mode+0x1a/0x30 [ 27.542268][ T370] do_syscall_64+0x58/0xa0 [ 27.546811][ T370] ? clear_bhb_loop+0x50/0xa0 [ 27.551850][ T370] ? clear_bhb_loop+0x50/0xa0 [ 27.556556][ T370] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 27.562587][ T370] RIP: 0033:0x7f71e60b3159 [ 27.567117][ T370] 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 [ 27.587306][ T370] RSP: 002b:00007fff5e64ab58 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 27.595951][ T370] RAX: 0000000000000000 RBX: 00007fff5e64ac40 RCX: 00007f71e60b3159 [ 27.604142][ T370] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 27.612239][ T370] RBP: 0000000000006ad0 R08: 0000000000000001 R09: 0000000000000000 [ 27.620354][ T370] R10: 0000001b32d20000 R11: 0000000000000246 R12: 0000000000000000 [ 27.628354][ T370] R13: 00007f71e633afac R14: 00007f71e633afa8 R15: 00007f71e633afa0 [ 27.636586][ T370] [ 27.639793][ T370] [ 27.642119][ T370] Allocated by task 370: [ 27.646359][ T370] __kasan_kmalloc+0xd4/0x100 [ 27.651070][ T370] __kmalloc+0x13d/0x2c0 [ 27.655373][ T370] l2tp_session_create+0x39/0xb60 [ 27.660412][ T370] pppol2tp_connect+0xbf5/0x1640 [ 27.665611][ T370] __sys_connect+0x3cb/0x450 [ 27.670343][ T370] __x64_sys_connect+0x7a/0x90 [ 27.675569][ T370] x64_sys_call+0x7c/0x9a0 [ 27.680129][ T370] do_syscall_64+0x4c/0xa0 [ 27.685112][ T370] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 27.691106][ T370] [ 27.693573][ T370] Freed by task 370: [ 27.697690][ T370] kasan_set_track+0x4a/0x70 [ 27.702676][ T370] kasan_set_free_info+0x23/0x40 [ 27.707826][ T370] ____kasan_slab_free+0x125/0x160 [ 27.713057][ T370] __kasan_slab_free+0x11/0x20 [ 27.718130][ T370] slab_free_freelist_hook+0xc2/0x190 [ 27.723605][ T370] kfree+0xc4/0x270 [ 27.727435][ T370] l2tp_session_put+0xaf/0x1a0 [ 27.732357][ T370] l2tp_session_delete+0x3a9/0x4a0 [ 27.737750][ T370] pppol2tp_release+0x169/0x2b0 [ 27.742717][ T370] sock_close+0xb8/0x200 [ 27.746998][ T370] __fput+0x22b/0x900 [ 27.751025][ T370] ____fput+0x15/0x20 [ 27.755545][ T370] task_work_run+0x127/0x190 [ 27.760339][ T370] exit_to_user_mode_loop+0xd0/0xe0 [ 27.765970][ T370] exit_to_user_mode_prepare+0x87/0xd0 [ 27.771992][ T370] syscall_exit_to_user_mode+0x1a/0x30 [ 27.777611][ T370] do_syscall_64+0x58/0xa0 [ 27.782306][ T370] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 27.788316][ T370] [ 27.790648][ T370] The buggy address belongs to the object at ffff8881103b1400 [ 27.790648][ T370] which belongs to the cache kmalloc-512 of size 512 [ 27.804901][ T370] The buggy address is located 336 bytes inside of [ 27.804901][ T370] 512-byte region [ffff8881103b1400, ffff8881103b1600) [ 27.818326][ T370] The buggy address belongs to the page: [ 27.824013][ T370] page:ffffea000440ec00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1103b0 [ 27.834493][ T370] head:ffffea000440ec00 order:2 compound_mapcount:0 compound_pincount:0 [ 27.843577][ T370] flags: 0x4000000000010200(slab|head|zone=1) [ 27.850089][ T370] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100042f00 [ 27.858903][ T370] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 27.868839][ T370] page dumped because: kasan: bad access detected [ 27.875606][ T370] page_owner tracks the page as allocated [ 27.881601][ T370] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 106, ts 6394579653, free_ts 0 [ 27.900708][ T370] post_alloc_hook+0x192/0x1b0 [ 27.905501][ T370] prep_new_page+0x1c/0x110 [ 27.910049][ T370] get_page_from_freelist+0x2c3a/0x2cd0 [ 27.915705][ T370] __alloc_pages+0x1a2/0x460 [ 27.920508][ T370] new_slab+0xa0/0x4d0 [ 27.924803][ T370] ___slab_alloc+0x3ac/0x840 [ 27.929552][ T370] __slab_alloc+0x49/0x90 [ 27.934025][ T370] __kmalloc_track_caller+0x169/0x2c0 [ 27.939613][ T370] __alloc_skb+0x210/0x730 [ 27.944203][ T370] alloc_skb_with_frags+0xa8/0x620 [ 27.949447][ T370] sock_alloc_send_pskb+0x87f/0x9a0 [ 27.954678][ T370] unix_dgram_sendmsg+0x6f3/0x19b0 [ 27.960222][ T370] sock_write_iter+0x2a6/0x3a0 [ 27.965020][ T370] vfs_write+0x831/0xfd0 [ 27.969457][ T370] ksys_write+0x14a/0x260 [ 27.973798][ T370] __x64_sys_write+0x7b/0x90 [ 27.978712][ T370] page_owner free stack trace missing [ 27.984281][ T370] [ 27.986723][ T370] Memory state around the buggy address: [ 27.992536][ T370] ffff8881103b1400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.000697][ T370] ffff8881103b1480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.009295][ T370] >ffff8881103b1500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.017374][ T370] ^ [ 28.024229][ T370] ffff8881103b1580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.032835][ T370] ffff8881103b1600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.041436][ T370] ================================================================== [ 28.049711][ T370] Disabling lock debugging due to kernel taint