Warning: Permanently added '10.128.0.108' (ED25519) to the list of known hosts. 2026/07/23 20:10:25 parsed 1 programs 2026/07/23 20:10:25 serving rpc on tcp://44313 [ 32.788238][ T30] audit: type=1400 audit(1784837425.659:64): 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 [ 32.809336][ T30] audit: type=1400 audit(1784837425.659:65): 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 [ 33.827065][ T30] audit: type=1400 audit(1784837426.689:66): 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 [ 33.831276][ T299] cgroup: Unknown subsys name 'net' [ 33.850774][ T30] audit: type=1400 audit(1784837426.699:67): 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 [ 33.878710][ T30] audit: type=1400 audit(1784837426.729:68): 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 [ 33.879069][ T299] cgroup: Unknown subsys name 'devices' [ 34.019851][ T299] cgroup: Unknown subsys name 'hugetlb' [ 34.025787][ T299] cgroup: Unknown subsys name 'rlimit' [ 34.205551][ T30] audit: type=1400 audit(1784837427.069:69): 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 [ 34.229537][ T30] audit: type=1400 audit(1784837427.069:70): 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 [ 34.250637][ T30] audit: type=1400 audit(1784837427.069:71): 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 [ 34.271750][ T30] audit: type=1400 audit(1784837427.069:72): 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 [ 34.292389][ T30] audit: type=1400 audit(1784837427.069:73): 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 [ 34.311914][ T303] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). Setting up swapspace version 1, size = 127995904 bytes [ 34.383414][ T299] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 34.814913][ T305] request_module fs-gadgetfs succeeded, but still no fs? [ 35.265406][ T335] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.272803][ T335] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.280659][ T335] device bridge_slave_0 entered promiscuous mode [ 35.287939][ T335] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.294992][ T335] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.302616][ T335] device bridge_slave_1 entered promiscuous mode [ 35.359844][ T335] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.367476][ T335] bridge0: port 2(bridge_slave_1) entered forwarding state [ 35.375047][ T335] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.382235][ T335] bridge0: port 1(bridge_slave_0) entered forwarding state [ 35.402854][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.410460][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.418129][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 35.425951][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 35.437162][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 35.445544][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.452671][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 35.460618][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 35.469874][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.476962][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 35.489801][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 35.499175][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 35.512956][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 35.524165][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 35.532628][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 35.540328][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 35.549545][ T335] device veth0_vlan entered promiscuous mode [ 35.560471][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 35.569756][ T335] device veth1_macvtap entered promiscuous mode [ 35.579794][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 35.590158][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 35.621866][ T335] syz-executor (335) used greatest stack depth: 21096 bytes left 2026/07/23 20:10:29 executed programs: 0 [ 36.209289][ T367] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.216462][ T367] bridge0: port 1(bridge_slave_0) entered disabled state [ 36.224969][ T367] device bridge_slave_0 entered promiscuous mode [ 36.232277][ T367] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.239389][ T367] bridge0: port 2(bridge_slave_1) entered disabled state [ 36.247054][ T367] device bridge_slave_1 entered promiscuous mode [ 36.289909][ T367] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.297060][ T367] bridge0: port 2(bridge_slave_1) entered forwarding state [ 36.304606][ T367] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.311674][ T367] bridge0: port 1(bridge_slave_0) entered forwarding state [ 36.321762][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 36.329472][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 36.349267][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 36.356814][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 36.365902][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 36.374472][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 36.382848][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.389936][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 36.406077][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 36.414715][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 36.423043][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.430243][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 36.442205][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 36.450482][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 36.465319][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 36.474043][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 36.489417][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 36.498173][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 36.515744][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 36.524078][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 36.532694][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 36.540406][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 36.553732][ T367] device veth0_vlan entered promiscuous mode [ 36.564115][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 36.572415][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 36.583797][ T367] device veth1_macvtap entered promiscuous mode [ 36.592872][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 36.601248][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 36.609697][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 36.624395][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 36.632812][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 36.661844][ T371] ================================================================== [ 36.670063][ T371] BUG: KASAN: use-after-free in mutex_lock+0x8e/0x1c0 [ 36.676870][ T371] Write of size 8 at addr ffff88811fa46150 by task syz.2.17/371 [ 36.684912][ T371] [ 36.687271][ T371] CPU: 0 PID: 371 Comm: syz.2.17 Not tainted syzkaller #0 [ 36.694411][ T371] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/13/2026 [ 36.704767][ T371] Call Trace: [ 36.708063][ T371] [ 36.711013][ T371] __dump_stack+0x21/0x30 [ 36.715349][ T371] dump_stack_lvl+0x110/0x170 [ 36.720036][ T371] ? show_regs_print_info+0x20/0x20 [ 36.725253][ T371] ? load_image+0x3f0/0x3f0 [ 36.730201][ T371] print_address_description+0x7f/0x2c0 [ 36.736225][ T371] ? mutex_lock+0x8e/0x1c0 [ 36.740812][ T371] kasan_report+0x10f/0x150 [ 36.745453][ T371] ? mutex_lock+0x8e/0x1c0 [ 36.749879][ T371] kasan_check_range+0x249/0x2a0 [ 36.754821][ T371] __kasan_check_write+0x14/0x20 [ 36.759764][ T371] mutex_lock+0x8e/0x1c0 [ 36.764016][ T371] ? wait_for_completion_killable_timeout+0x10/0x10 [ 36.770699][ T371] ? l2tp_session_put+0xaf/0x1a0 [ 36.775764][ T371] ? l2tp_session_delete+0x3a9/0x4a0 [ 36.781186][ T371] pppol2tp_release+0x178/0x2b0 [ 36.786084][ T371] sock_close+0xb8/0x200 [ 36.790363][ T371] ? sock_mmap+0xa0/0xa0 [ 36.794807][ T371] __fput+0x22b/0x900 [ 36.798890][ T371] ____fput+0x15/0x20 [ 36.803073][ T371] task_work_run+0x127/0x190 [ 36.807680][ T371] exit_to_user_mode_loop+0xd0/0xe0 [ 36.813007][ T371] exit_to_user_mode_prepare+0x87/0xd0 [ 36.818476][ T371] syscall_exit_to_user_mode+0x1a/0x30 [ 36.823950][ T371] do_syscall_64+0x58/0xa0 [ 36.828377][ T371] ? clear_bhb_loop+0x50/0xa0 [ 36.833151][ T371] ? clear_bhb_loop+0x50/0xa0 [ 36.837975][ T371] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 36.844059][ T371] RIP: 0033:0x7f2802c8ee99 [ 36.848874][ T371] 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 [ 36.868750][ T371] RSP: 002b:00007fffb0965d78 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 36.877369][ T371] RAX: 0000000000000000 RBX: 00007fffb0965e60 RCX: 00007f2802c8ee99 [ 36.885629][ T371] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 36.893704][ T371] RBP: 0000000000008f19 R08: 0000000000000001 R09: 0000000000000000 [ 36.901780][ T371] R10: 0000001b32e20000 R11: 0000000000000246 R12: 0000000000000000 [ 36.909773][ T371] R13: 00007f2802f16fac R14: 00007f2802f16fa8 R15: 00007f2802f16fa0 [ 36.917768][ T371] [ 36.920906][ T371] [ 36.923243][ T371] Allocated by task 371: [ 36.927505][ T371] __kasan_kmalloc+0xd4/0x100 [ 36.932201][ T371] __kmalloc+0x13d/0x2c0 [ 36.936461][ T371] l2tp_session_create+0x39/0xb60 [ 36.941505][ T371] pppol2tp_connect+0xbf5/0x1640 [ 36.946480][ T371] __sys_connect+0x3cb/0x450 [ 36.951097][ T371] __x64_sys_connect+0x7a/0x90 [ 36.955886][ T371] x64_sys_call+0x7c/0x9a0 [ 36.960416][ T371] do_syscall_64+0x4c/0xa0 [ 36.964935][ T371] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 36.970984][ T371] [ 36.973317][ T371] Freed by task 371: [ 36.977338][ T371] kasan_set_track+0x4a/0x70 [ 36.982033][ T371] kasan_set_free_info+0x23/0x40 [ 36.986981][ T371] ____kasan_slab_free+0x125/0x160 [ 36.992104][ T371] __kasan_slab_free+0x11/0x20 [ 36.996968][ T371] slab_free_freelist_hook+0xc2/0x190 [ 37.002450][ T371] kfree+0xc4/0x270 [ 37.006300][ T371] l2tp_session_put+0xaf/0x1a0 [ 37.011183][ T371] l2tp_session_delete+0x3a9/0x4a0 [ 37.016394][ T371] pppol2tp_release+0x169/0x2b0 [ 37.021263][ T371] sock_close+0xb8/0x200 [ 37.025552][ T371] __fput+0x22b/0x900 [ 37.029589][ T371] ____fput+0x15/0x20 [ 37.033745][ T371] task_work_run+0x127/0x190 [ 37.038534][ T371] exit_to_user_mode_loop+0xd0/0xe0 [ 37.043925][ T371] exit_to_user_mode_prepare+0x87/0xd0 [ 37.049415][ T371] syscall_exit_to_user_mode+0x1a/0x30 [ 37.055000][ T371] do_syscall_64+0x58/0xa0 [ 37.059430][ T371] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 37.065342][ T371] [ 37.067696][ T371] The buggy address belongs to the object at ffff88811fa46000 [ 37.067696][ T371] which belongs to the cache kmalloc-512 of size 512 [ 37.082009][ T371] The buggy address is located 336 bytes inside of [ 37.082009][ T371] 512-byte region [ffff88811fa46000, ffff88811fa46200) [ 37.095313][ T371] The buggy address belongs to the page: [ 37.101164][ T371] page:ffffea00047e9100 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11fa44 [ 37.111709][ T371] head:ffffea00047e9100 order:2 compound_mapcount:0 compound_pincount:0 [ 37.120046][ T371] flags: 0x4000000000010200(slab|head|zone=1) [ 37.126318][ T371] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 37.135083][ T371] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 37.143789][ T371] page dumped because: kasan: bad access detected [ 37.150207][ T371] page_owner tracks the page as allocated [ 37.155948][ T371] 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 371, ts 36661622647, free_ts 35770415512 [ 37.176580][ T371] post_alloc_hook+0x192/0x1b0 [ 37.181382][ T371] prep_new_page+0x1c/0x110 [ 37.186002][ T371] get_page_from_freelist+0x2c3a/0x2cd0 [ 37.191658][ T371] __alloc_pages+0x1a2/0x460 [ 37.196433][ T371] new_slab+0xa0/0x4d0 [ 37.200605][ T371] ___slab_alloc+0x3ac/0x840 [ 37.205305][ T371] __slab_alloc+0x49/0x90 [ 37.209653][ T371] kmem_cache_alloc_trace+0x146/0x270 [ 37.215052][ T371] l2tp_tunnel_create+0x97/0x460 [ 37.220196][ T371] pppol2tp_connect+0x7ef/0x1640 [ 37.225287][ T371] __sys_connect+0x3cb/0x450 [ 37.229905][ T371] __x64_sys_connect+0x7a/0x90 [ 37.234947][ T371] x64_sys_call+0x7c/0x9a0 [ 37.239391][ T371] do_syscall_64+0x4c/0xa0 [ 37.243920][ T371] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 37.249841][ T371] page last free stack trace: [ 37.254702][ T371] free_unref_page_prepare+0x5fa/0x600 [ 37.260192][ T371] free_unref_page+0xae/0x540 [ 37.264903][ T371] __free_pages+0x6c/0x100 [ 37.269948][ T371] __vunmap+0x801/0x980 [ 37.274215][ T371] vfree+0x8b/0xc0 [ 37.278047][ T371] kcov_close+0x2b/0x50 [ 37.282227][ T371] __fput+0x22b/0x900 [ 37.286329][ T371] ____fput+0x15/0x20 [ 37.290443][ T371] task_work_run+0x127/0x190 [ 37.295058][ T371] do_exit+0xb70/0x29a0 [ 37.299239][ T371] do_group_exit+0x149/0x310 [ 37.303970][ T371] get_signal+0x64f/0x1430 [ 37.308552][ T371] arch_do_signal_or_restart+0xe2/0x1100 [ 37.314643][ T371] exit_to_user_mode_loop+0xa7/0xe0 [ 37.320143][ T371] exit_to_user_mode_prepare+0x87/0xd0 [ 37.325710][ T371] syscall_exit_to_user_mode+0x1a/0x30 [ 37.331391][ T371] [ 37.333733][ T371] Memory state around the buggy address: [ 37.339739][ T371] ffff88811fa46000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 37.348000][ T371] ffff88811fa46080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 37.356097][ T371] >ffff88811fa46100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 37.364615][ T371] ^ [ 37.371677][ T371] ffff88811fa46180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 37.379863][ T371] ffff88811fa46200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 37.388028][ T371] ================================================================== [ 37.396466][ T371] Disabling lock debugging due to kernel taint