Warning: Permanently added '10.128.0.231' (ED25519) to the list of known hosts. 2026/09/08 01:45:09 parsed 1 programs 2026/09/08 01:45:09 serving rpc on tcp://45469 [ 19.780350][ T30] audit: type=1400 audit(1788831909.878:64): 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 [ 19.784069][ T30] audit: type=1400 audit(1788831909.878:65): 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 [ 20.394510][ T30] audit: type=1400 audit(1788831910.488:66): 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 [ 20.395624][ T299] cgroup: Unknown subsys name 'net' [ 20.417180][ T30] audit: type=1400 audit(1788831910.488:67): 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 [ 20.444438][ T30] audit: type=1400 audit(1788831910.518:68): 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 [ 20.444612][ T299] cgroup: Unknown subsys name 'devices' [ 20.561539][ T299] cgroup: Unknown subsys name 'hugetlb' [ 20.567160][ T299] cgroup: Unknown subsys name 'rlimit' [ 20.707824][ T30] audit: type=1400 audit(1788831910.798:69): 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 [ 20.731116][ T30] audit: type=1400 audit(1788831910.798:70): 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 [ 20.751562][ T30] audit: type=1400 audit(1788831910.798:71): 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 [ 20.757276][ T303] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 20.771849][ T30] audit: type=1400 audit(1788831910.798:72): 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 [ 20.800600][ T30] audit: type=1400 audit(1788831910.798:73): 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 [ 20.832701][ T299] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 21.199623][ T305] request_module fs-gadgetfs succeeded, but still no fs? [ 21.329972][ T316] bridge0: port 1(bridge_slave_0) entered blocking state [ 21.337030][ T316] bridge0: port 1(bridge_slave_0) entered disabled state [ 21.344484][ T316] device bridge_slave_0 entered promiscuous mode [ 21.351353][ T316] bridge0: port 2(bridge_slave_1) entered blocking state [ 21.358365][ T316] bridge0: port 2(bridge_slave_1) entered disabled state [ 21.365792][ T316] device bridge_slave_1 entered promiscuous mode [ 21.400271][ T316] bridge0: port 2(bridge_slave_1) entered blocking state [ 21.407318][ T316] bridge0: port 2(bridge_slave_1) entered forwarding state [ 21.414613][ T316] bridge0: port 1(bridge_slave_0) entered blocking state [ 21.421653][ T316] bridge0: port 1(bridge_slave_0) entered forwarding state [ 21.438945][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 21.446247][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 21.453918][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 21.461302][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 21.471222][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 21.479355][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 21.486394][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 21.493788][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 21.502080][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 21.509124][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 21.520492][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 21.529655][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 21.542610][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 21.554354][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 21.562641][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 21.570113][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 21.578043][ T316] device veth0_vlan entered promiscuous mode [ 21.588230][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 21.597069][ T316] device veth1_macvtap entered promiscuous mode [ 21.605603][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 21.615278][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 21.641844][ T316] syz-executor (316) used greatest stack depth: 20800 bytes left 2026/09/08 01:45:12 executed programs: 0 [ 22.296781][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.304075][ T368] bridge0: port 1(bridge_slave_0) entered disabled state [ 22.311431][ T368] device bridge_slave_0 entered promiscuous mode [ 22.318231][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.325276][ T368] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.332567][ T368] device bridge_slave_1 entered promiscuous mode [ 22.378988][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 22.386470][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 22.398550][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 22.406974][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 22.415354][ T317] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.422430][ T317] bridge0: port 1(bridge_slave_0) entered forwarding state [ 22.429922][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 22.438690][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 22.447377][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 22.455737][ T317] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.462908][ T317] bridge0: port 2(bridge_slave_1) entered forwarding state [ 22.471869][ T45] device bridge_slave_1 left promiscuous mode [ 22.478023][ T45] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.485539][ T45] device bridge_slave_0 left promiscuous mode [ 22.491695][ T45] bridge0: port 1(bridge_slave_0) entered disabled state [ 22.499463][ T45] device veth1_macvtap left promiscuous mode [ 22.505495][ T45] device veth0_vlan left promiscuous mode [ 22.574280][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 22.582368][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 22.592502][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 22.600596][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 22.612448][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 22.620901][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 22.632294][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 22.640191][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 22.648317][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 22.655822][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 22.663895][ T368] device veth0_vlan entered promiscuous mode [ 22.672785][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 22.681151][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 22.690541][ T368] device veth1_macvtap entered promiscuous mode [ 22.699025][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 22.706937][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 22.715296][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 22.724861][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 22.733176][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 22.754065][ T372] ================================================================== [ 22.762250][ T372] BUG: KASAN: use-after-free in mutex_lock+0x8e/0x1c0 [ 22.769063][ T372] Write of size 8 at addr ffff88811f2eb550 by task syz.2.17/372 [ 22.776683][ T372] [ 22.779001][ T372] CPU: 0 PID: 372 Comm: syz.2.17 Not tainted syzkaller #0 [ 22.786110][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 22.796164][ T372] Call Trace: [ 22.799432][ T372] [ 22.802353][ T372] __dump_stack+0x21/0x30 [ 22.806664][ T372] dump_stack_lvl+0x110/0x170 [ 22.811315][ T372] ? show_regs_print_info+0x20/0x20 [ 22.816496][ T372] ? load_image+0x3f0/0x3f0 [ 22.821025][ T372] print_address_description+0x7f/0x2c0 [ 22.826585][ T372] ? mutex_lock+0x8e/0x1c0 [ 22.830987][ T372] kasan_report+0x10f/0x150 [ 22.835473][ T372] ? mutex_lock+0x8e/0x1c0 [ 22.839867][ T372] kasan_check_range+0x249/0x2a0 [ 22.844811][ T372] __kasan_check_write+0x14/0x20 [ 22.849728][ T372] mutex_lock+0x8e/0x1c0 [ 22.853949][ T372] ? wait_for_completion_killable_timeout+0x10/0x10 [ 22.860526][ T372] ? l2tp_session_put+0xaf/0x1a0 [ 22.865545][ T372] ? l2tp_session_delete+0x3a9/0x4a0 [ 22.870984][ T372] pppol2tp_release+0x178/0x2b0 [ 22.875844][ T372] sock_close+0xb8/0x200 [ 22.880077][ T372] ? sock_mmap+0xa0/0xa0 [ 22.884324][ T372] __fput+0x22b/0x900 [ 22.888286][ T372] ____fput+0x15/0x20 [ 22.892251][ T372] task_work_run+0x127/0x190 [ 22.896833][ T372] exit_to_user_mode_loop+0xd0/0xe0 [ 22.902016][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 22.907479][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 22.912987][ T372] do_syscall_64+0x58/0xa0 [ 22.917408][ T372] ? clear_bhb_loop+0x50/0xa0 [ 22.922067][ T372] ? clear_bhb_loop+0x50/0xa0 [ 22.926728][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 22.932604][ T372] RIP: 0033:0x7f9045c19159 [ 22.937001][ T372] 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 [ 22.956781][ T372] RSP: 002b:00007ffc061a9918 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 22.965178][ T372] RAX: 0000000000000000 RBX: 00007ffc061a9a00 RCX: 00007f9045c19159 [ 22.973141][ T372] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 22.981100][ T372] RBP: 00000000000058cd R08: 0000000000000001 R09: 0000000000000000 [ 22.989076][ T372] R10: 0000001b32f20000 R11: 0000000000000246 R12: 0000000000000000 [ 22.997051][ T372] R13: 00007f9045ea0fac R14: 00007f9045ea0fa8 R15: 00007f9045ea0fa0 [ 23.005011][ T372] [ 23.008016][ T372] [ 23.010319][ T372] Allocated by task 372: [ 23.014554][ T372] __kasan_kmalloc+0xd4/0x100 [ 23.019228][ T372] __kmalloc+0x13d/0x2c0 [ 23.023447][ T372] l2tp_session_create+0x39/0xb60 [ 23.028450][ T372] pppol2tp_connect+0xbf5/0x1640 [ 23.033367][ T372] __sys_connect+0x3cb/0x450 [ 23.037954][ T372] __x64_sys_connect+0x7a/0x90 [ 23.042695][ T372] x64_sys_call+0x7c/0x9a0 [ 23.047110][ T372] do_syscall_64+0x4c/0xa0 [ 23.051504][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 23.057375][ T372] [ 23.059701][ T372] Freed by task 372: [ 23.063604][ T372] kasan_set_track+0x4a/0x70 [ 23.068175][ T372] kasan_set_free_info+0x23/0x40 [ 23.073107][ T372] ____kasan_slab_free+0x125/0x160 [ 23.078195][ T372] __kasan_slab_free+0x11/0x20 [ 23.082936][ T372] slab_free_freelist_hook+0xc2/0x190 [ 23.088303][ T372] kfree+0xc4/0x270 [ 23.092090][ T372] l2tp_session_put+0xaf/0x1a0 [ 23.096827][ T372] l2tp_session_delete+0x3a9/0x4a0 [ 23.101915][ T372] pppol2tp_release+0x169/0x2b0 [ 23.106748][ T372] sock_close+0xb8/0x200 [ 23.110971][ T372] __fput+0x22b/0x900 [ 23.114935][ T372] ____fput+0x15/0x20 [ 23.118903][ T372] task_work_run+0x127/0x190 [ 23.123493][ T372] exit_to_user_mode_loop+0xd0/0xe0 [ 23.128667][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 23.134102][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 23.139540][ T372] do_syscall_64+0x58/0xa0 [ 23.143934][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 23.149818][ T372] [ 23.152121][ T372] The buggy address belongs to the object at ffff88811f2eb400 [ 23.152121][ T372] which belongs to the cache kmalloc-512 of size 512 [ 23.166152][ T372] The buggy address is located 336 bytes inside of [ 23.166152][ T372] 512-byte region [ffff88811f2eb400, ffff88811f2eb600) [ 23.179461][ T372] The buggy address belongs to the page: [ 23.185089][ T372] page:ffffea00047cba00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11f2e8 [ 23.195326][ T372] head:ffffea00047cba00 order:2 compound_mapcount:0 compound_pincount:0 [ 23.203646][ T372] flags: 0x4000000000010200(slab|head|zone=1) [ 23.209700][ T372] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 23.218260][ T372] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 23.226842][ T372] page dumped because: kasan: bad access detected [ 23.233228][ T372] page_owner tracks the page as allocated [ 23.238948][ T372] 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 368, ts 22746107227, free_ts 22118400109 [ 23.259353][ T372] post_alloc_hook+0x192/0x1b0 [ 23.264106][ T372] prep_new_page+0x1c/0x110 [ 23.268598][ T372] get_page_from_freelist+0x2c3a/0x2cd0 [ 23.274118][ T372] __alloc_pages+0x1a2/0x460 [ 23.278682][ T372] new_slab+0xa0/0x4d0 [ 23.282721][ T372] ___slab_alloc+0x3ac/0x840 [ 23.287289][ T372] __slab_alloc+0x49/0x90 [ 23.291590][ T372] __kmalloc_track_caller+0x169/0x2c0 [ 23.296941][ T372] __alloc_skb+0x210/0x730 [ 23.301368][ T372] netlink_ack+0x35c/0xb10 [ 23.305760][ T372] netlink_rcv_skb+0x267/0x430 [ 23.310516][ T372] rtnetlink_rcv+0x1c/0x20 [ 23.314998][ T372] netlink_unicast+0x86c/0xa30 [ 23.319738][ T372] netlink_sendmsg+0x879/0xb80 [ 23.324492][ T372] __sys_sendto+0x46d/0x620 [ 23.328971][ T372] __x64_sys_sendto+0xe5/0x100 [ 23.333721][ T372] page last free stack trace: [ 23.338365][ T372] free_unref_page_prepare+0x5fa/0x600 [ 23.343805][ T372] free_unref_page+0xae/0x540 [ 23.348454][ T372] __free_pages+0x6c/0x100 [ 23.352929][ T372] __vunmap+0x801/0x980 [ 23.357069][ T372] vfree+0x8b/0xc0 [ 23.360762][ T372] kcov_close+0x2b/0x50 [ 23.364897][ T372] __fput+0x22b/0x900 [ 23.368852][ T372] ____fput+0x15/0x20 [ 23.372806][ T372] task_work_run+0x127/0x190 [ 23.377386][ T372] do_exit+0xb70/0x29a0 [ 23.381519][ T372] do_group_exit+0x149/0x310 [ 23.386098][ T372] get_signal+0x64f/0x1430 [ 23.390489][ T372] arch_do_signal_or_restart+0xe2/0x1100 [ 23.396212][ T372] exit_to_user_mode_loop+0xa7/0xe0 [ 23.401498][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 23.406932][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 23.412370][ T372] [ 23.414674][ T372] Memory state around the buggy address: [ 23.420276][ T372] ffff88811f2eb400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.428339][ T372] ffff88811f2eb480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.436381][ T372] >ffff88811f2eb500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.444455][ T372] ^ [ 23.451119][ T372] ffff88811f2eb580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.459153][ T372] ffff88811f2eb600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.467248][ T372] ================================================================== [ 23.475282][ T372] Disabling lock debugging due to kernel taint