Warning: Permanently added '10.128.1.114' (ED25519) to the list of known hosts. 2026/07/23 21:33:08 parsed 1 programs 2026/07/23 21:33:08 serving rpc on tcp://35723 [ 23.128767][ T28] audit: type=1400 audit(1784842388.239:64): 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 [ 23.149575][ T28] audit: type=1400 audit(1784842388.239:65): 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 [ 23.900267][ T28] audit: type=1400 audit(1784842389.009:66): avc: denied { mounton } for pid=301 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 [ 23.901317][ T301] cgroup: Unknown subsys name 'net' [ 23.922945][ T28] audit: type=1400 audit(1784842389.009:67): avc: denied { mount } for pid=301 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 [ 23.950238][ T28] audit: type=1400 audit(1784842389.039:68): avc: denied { unmount } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 23.950369][ T301] cgroup: Unknown subsys name 'devices' [ 24.090532][ T301] cgroup: Unknown subsys name 'hugetlb' [ 24.096162][ T301] cgroup: Unknown subsys name 'rlimit' [ 24.204125][ T28] audit: type=1400 audit(1784842389.309:69): avc: denied { setattr } for pid=301 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 [ 24.227356][ T28] audit: type=1400 audit(1784842389.309:70): avc: denied { create } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.247817][ T28] audit: type=1400 audit(1784842389.309:71): avc: denied { write } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.257025][ T305] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 24.268142][ T28] audit: type=1400 audit(1784842389.309:72): avc: denied { read } for pid=301 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 [ 24.296859][ T28] audit: type=1400 audit(1784842389.309:73): avc: denied { mounton } for pid=301 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 [ 24.328684][ T301] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 25.017444][ T308] request_module fs-gadgetfs succeeded, but still no fs? [ 25.587865][ T359] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.594962][ T359] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.602680][ T359] device bridge_slave_0 entered promiscuous mode [ 25.609725][ T359] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.616758][ T359] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.624289][ T359] device bridge_slave_1 entered promiscuous mode [ 25.661065][ T359] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.668122][ T359] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.675407][ T359] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.682438][ T359] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.700310][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.708024][ T333] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.715301][ T333] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.723932][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.732303][ T333] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.739357][ T333] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.747938][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.756275][ T333] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.763340][ T333] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.775153][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.784438][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.797729][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.809260][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.817278][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.824784][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.833235][ T359] device veth0_vlan entered promiscuous mode [ 25.842924][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.851961][ T359] device veth1_macvtap entered promiscuous mode [ 25.861370][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.871325][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 25.898265][ T359] syz-executor (359) used greatest stack depth: 22176 bytes left 2026/07/23 21:33:11 executed programs: 0 [ 26.065247][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.072315][ T370] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.079688][ T370] device bridge_slave_0 entered promiscuous mode [ 26.086547][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.093821][ T370] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.101333][ T370] device bridge_slave_1 entered promiscuous mode [ 26.150549][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.157596][ T370] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.164948][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.171992][ T370] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.189559][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.197228][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.204830][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.219119][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.227359][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.234407][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.242865][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.251216][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.258252][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.275072][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.284338][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.297403][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.308119][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.316584][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.324265][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.336524][ T370] device veth0_vlan entered promiscuous mode [ 26.346118][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.355278][ T370] device veth1_macvtap entered promiscuous mode [ 26.364495][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.374369][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.459519][ T376] ================================================================== [ 26.467623][ T376] BUG: KASAN: use-after-free in pppol2tp_sock_to_session+0x1a0/0x1b0 [ 26.475717][ T376] Read of size 4 at addr ffff88812d5c9c00 by task syz.2.17/376 [ 26.483262][ T376] [ 26.485597][ T376] CPU: 0 PID: 376 Comm: syz.2.17 Not tainted syzkaller #0 [ 26.492716][ T376] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 26.502785][ T376] Call Trace: [ 26.506059][ T376] [ 26.508976][ T376] __dump_stack+0x21/0x24 [ 26.513297][ T376] dump_stack_lvl+0x110/0x170 [ 26.517957][ T376] ? __cfi_dump_stack_lvl+0x8/0x8 [ 26.522987][ T376] ? _raw_spin_lock_bh+0x94/0xf0 [ 26.527910][ T376] ? pppol2tp_sock_to_session+0x1a0/0x1b0 [ 26.533615][ T376] print_address_description+0x71/0x200 [ 26.539154][ T376] print_report+0x4a/0x60 [ 26.543467][ T376] kasan_report+0x122/0x150 [ 26.547957][ T376] ? pppol2tp_sock_to_session+0x1a0/0x1b0 [ 26.555253][ T376] __asan_report_load4_noabort+0x14/0x20 [ 26.560889][ T376] pppol2tp_sock_to_session+0x1a0/0x1b0 [ 26.566445][ T376] pppol2tp_release+0x150/0x2b0 [ 26.571288][ T376] sock_close+0xc9/0x220 [ 26.575607][ T376] ? __cfi_sock_close+0x10/0x10 [ 26.580481][ T376] __fput+0x1fd/0x8f0 [ 26.584450][ T376] ____fput+0x15/0x20 [ 26.588415][ T376] task_work_run+0x1e1/0x250 [ 26.593005][ T376] ? __cfi_task_work_run+0x10/0x10 [ 26.598100][ T376] ? free_nsproxy+0x21f/0x270 [ 26.602764][ T376] do_exit+0xaf2/0x2850 [ 26.606911][ T376] ? __cfi_do_exit+0x10/0x10 [ 26.611489][ T376] ? __mmdrop+0x31b/0x600 [ 26.615809][ T376] ? __kasan_check_write+0x14/0x20 [ 26.620902][ T376] ? _raw_spin_lock_irq+0x95/0xf0 [ 26.625914][ T376] ? __cfi__raw_spin_lock_irq+0x10/0x10 [ 26.631443][ T376] do_group_exit+0x21b/0x2e0 [ 26.636021][ T376] ? __kasan_check_write+0x14/0x20 [ 26.641119][ T376] ? recalc_sigpending+0x180/0x1c0 [ 26.646215][ T376] get_signal+0x167c/0x1700 [ 26.650741][ T376] ? __cfi_get_signal+0x10/0x10 [ 26.655585][ T376] ? usleep_range_state+0x130/0x130 [ 26.660770][ T376] arch_do_signal_or_restart+0xd1/0x11c0 [ 26.666391][ T376] ? hrtimer_nanosleep+0x18f/0x340 [ 26.671506][ T376] ? __cfi_hrtimer_nanosleep+0x10/0x10 [ 26.676955][ T376] ? __cfi_hrtimer_wakeup+0x10/0x10 [ 26.682139][ T376] ? get_timespec64+0x116/0x1b0 [ 26.686972][ T376] ? __cfi_arch_do_signal_or_restart+0x10/0x10 [ 26.693133][ T376] ? __x64_sys_clock_nanosleep+0xb0/0xb0 [ 26.698835][ T376] ? do_user_addr_fault+0x9a5/0x1030 [ 26.704107][ T376] exit_to_user_mode_loop+0x7a/0xb0 [ 26.709319][ T376] exit_to_user_mode_prepare+0x87/0xd0 [ 26.714785][ T376] syscall_exit_to_user_mode+0x1a/0x30 [ 26.720334][ T376] do_syscall_64+0x58/0xa0 [ 26.724738][ T376] ? clear_bhb_loop+0x30/0x80 [ 26.729399][ T376] ? clear_bhb_loop+0x30/0x80 [ 26.734058][ T376] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.739938][ T376] RIP: 0033:0x7f1ebeb5e6ce [ 26.744352][ T376] Code: Unable to access opcode bytes at 0x7f1ebeb5e6a4. [ 26.751350][ T376] RSP: 002b:00007f1ebf9c5e78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6 [ 26.759760][ T376] RAX: fffffffffffffdfc RBX: 00007f1ebf9c66c0 RCX: 00007f1ebeb5e6ce [ 26.767720][ T376] RDX: 00007f1ebf9c5ed0 RSI: 0000000000000000 RDI: 0000000000000000 [ 26.775673][ T376] RBP: 00007f1ebec33eaf R08: 0000000000000000 R09: 0000000000000000 [ 26.783662][ T376] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 26.791616][ T376] R13: 00007f1ebee26038 R14: 00007f1ebee25fa0 R15: 00007ffc245097c8 [ 26.799575][ T376] [ 26.802573][ T376] [ 26.804881][ T376] Allocated by task 375: [ 26.809130][ T376] kasan_set_track+0x4b/0x70 [ 26.813713][ T376] kasan_save_alloc_info+0x1f/0x30 [ 26.818809][ T376] __kasan_kmalloc+0x95/0xb0 [ 26.823383][ T376] __kmalloc+0xb4/0x1e0 [ 26.827541][ T376] l2tp_session_create+0x38/0xbd0 [ 26.832550][ T376] pppol2tp_connect+0xbf5/0x1640 [ 26.837467][ T376] __sys_connect+0x3da/0x460 [ 26.842038][ T376] __x64_sys_connect+0x7a/0x90 [ 26.846783][ T376] x64_sys_call+0x88d/0x9a0 [ 26.851275][ T376] do_syscall_64+0x4c/0xa0 [ 26.855707][ T376] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.861589][ T376] [ 26.863893][ T376] Freed by task 10: [ 26.867674][ T376] kasan_set_track+0x4b/0x70 [ 26.872261][ T376] kasan_save_free_info+0x2b/0x40 [ 26.877265][ T376] ____kasan_slab_free+0x132/0x180 [ 26.882359][ T376] __kasan_slab_free+0x11/0x20 [ 26.887106][ T376] slab_free_freelist_hook+0xc2/0x190 [ 26.892467][ T376] __kmem_cache_free+0xb7/0x1b0 [ 26.897363][ T376] kfree+0x6f/0xf0 [ 26.901079][ T376] l2tp_session_put+0xaf/0x1a0 [ 26.905849][ T376] l2tp_session_delete+0x3df/0x4d0 [ 26.910947][ T376] l2tp_tunnel_del_work+0x199/0x410 [ 26.916131][ T376] process_one_work+0x717/0xc30 [ 26.920970][ T376] worker_thread+0xa4d/0x11d0 [ 26.925630][ T376] kthread+0x281/0x320 [ 26.929681][ T376] ret_from_fork+0x1f/0x30 [ 26.934083][ T376] [ 26.936386][ T376] The buggy address belongs to the object at ffff88812d5c9c00 [ 26.936386][ T376] which belongs to the cache kmalloc-512 of size 512 [ 26.950416][ T376] The buggy address is located 0 bytes inside of [ 26.950416][ T376] 512-byte region [ffff88812d5c9c00, ffff88812d5c9e00) [ 26.963502][ T376] [ 26.965901][ T376] The buggy address belongs to the physical page: [ 26.972306][ T376] page:ffffea0004b57200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12d5c8 [ 26.982560][ T376] head:ffffea0004b57200 order:2 compound_mapcount:0 compound_pincount:0 [ 26.990879][ T376] flags: 0x4000000000010200(slab|head|zone=1) [ 26.996971][ T376] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 27.005539][ T376] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 27.014096][ T376] page dumped because: kasan: bad access detected [ 27.020493][ T376] page_owner tracks the page as allocated [ 27.026300][ T376] 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 370, tgid 370 (syz-executor), ts 26393262197, free_ts 25180791364 [ 27.048879][ T376] post_alloc_hook+0x1f5/0x210 [ 27.053635][ T376] prep_new_page+0x1c/0x110 [ 27.058126][ T376] get_page_from_freelist+0x2ca9/0x2d20 [ 27.063667][ T376] __alloc_pages+0x1fa/0x610 [ 27.068250][ T376] alloc_slab_page+0x6e/0xf0 [ 27.072838][ T376] new_slab+0x98/0x3e0 [ 27.076891][ T376] ___slab_alloc+0x70f/0xb70 [ 27.081463][ T376] __slab_alloc+0x5e/0xa0 [ 27.085781][ T376] __kmem_cache_alloc_node+0x204/0x2d0 [ 27.091223][ T376] __kmalloc+0xa4/0x1e0 [ 27.095368][ T376] fib6_info_alloc+0x34/0xe0 [ 27.099941][ T376] ip6_route_info_create+0x51b/0x14d0 [ 27.105299][ T376] ip6_route_add+0x27/0x130 [ 27.109787][ T376] addrconf_prefix_route+0x233/0x310 [ 27.115057][ T376] inet6_addr_add+0x527/0x9c0 [ 27.119720][ T376] inet6_rtm_newaddr+0x74a/0xa10 [ 27.124639][ T376] page last free stack trace: [ 27.129304][ T376] free_unref_page_prepare+0x80c/0x820 [ 27.134763][ T376] free_unref_page+0x93/0x530 [ 27.139437][ T376] __free_pages+0x67/0x100 [ 27.143847][ T376] __vunmap+0xa3c/0xc00 [ 27.147986][ T376] vfree+0x61/0x90 [ 27.151778][ T376] kcov_close+0x2b/0x50 [ 27.155915][ T376] __fput+0x1fd/0x8f0 [ 27.159881][ T376] ____fput+0x15/0x20 [ 27.163850][ T376] task_work_run+0x1e1/0x250 [ 27.168439][ T376] do_exit+0xaf2/0x2850 [ 27.172593][ T376] do_group_exit+0x21b/0x2e0 [ 27.177173][ T376] get_signal+0x167c/0x1700 [ 27.181667][ T376] arch_do_signal_or_restart+0xd1/0x11c0 [ 27.187284][ T376] exit_to_user_mode_loop+0x7a/0xb0 [ 27.192481][ T376] exit_to_user_mode_prepare+0x87/0xd0 [ 27.197929][ T376] syscall_exit_to_user_mode+0x1a/0x30 [ 27.203372][ T376] [ 27.205678][ T376] Memory state around the buggy address: [ 27.211400][ T376] ffff88812d5c9b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.219462][ T376] ffff88812d5c9b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.227501][ T376] >ffff88812d5c9c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.235563][ T376] ^ [ 27.239609][ T376] ffff88812d5c9c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.247649][ T376] ffff88812d5c9d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.255701][ T376] =============================================================