Warning: Permanently added '10.128.0.142' (ED25519) to the list of known hosts. 2026/07/09 19:21:47 parsed 1 programs 2026/07/09 19:21:47 serving rpc on tcp://35573 [ 25.193782][ T30] audit: type=1400 audit(1783624907.605:64): 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 [ 25.214858][ T30] audit: type=1400 audit(1783624907.605:65): 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 [ 26.224349][ T30] audit: type=1400 audit(1783624908.635:66): 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 [ 26.228554][ T299] cgroup: Unknown subsys name 'net' [ 26.247299][ T30] audit: type=1400 audit(1783624908.635:67): 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 [ 26.274929][ T30] audit: type=1400 audit(1783624908.655:68): 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 [ 26.275493][ T299] cgroup: Unknown subsys name 'devices' [ 26.475464][ T299] cgroup: Unknown subsys name 'hugetlb' [ 26.481109][ T299] cgroup: Unknown subsys name 'rlimit' [ 26.631353][ T30] audit: type=1400 audit(1783624909.035:69): 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 [ 26.654602][ T30] audit: type=1400 audit(1783624909.035:70): 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 [ 26.675095][ T30] audit: type=1400 audit(1783624909.035:71): 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 [ 26.695373][ T303] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 26.704038][ T30] audit: type=1400 audit(1783624909.035:72): 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 [ 26.724283][ T30] audit: type=1400 audit(1783624909.035:73): 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 [ 26.751537][ T299] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 27.191951][ T305] request_module fs-gadgetfs succeeded, but still no fs? [ 27.534706][ T324] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.541801][ T324] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.549308][ T324] device bridge_slave_0 entered promiscuous mode [ 27.556290][ T324] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.563361][ T324] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.570742][ T324] device bridge_slave_1 entered promiscuous mode [ 27.613845][ T324] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.620915][ T324] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.628272][ T324] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.635331][ T324] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.654826][ T45] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.662306][ T45] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.670029][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 27.677936][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.687131][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.695471][ T45] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.702512][ T45] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.722422][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.730679][ T45] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.737758][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.745244][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.761380][ T324] device veth0_vlan entered promiscuous mode [ 27.773579][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.782204][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.790395][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.797862][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.805913][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.814210][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.823722][ T324] device veth1_macvtap entered promiscuous mode [ 27.832537][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.843974][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.874097][ T324] syz-executor (324) used greatest stack depth: 21184 bytes left 2026/07/09 19:21:50 executed programs: 0 [ 28.531952][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.539075][ T368] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.546571][ T368] device bridge_slave_0 entered promiscuous mode [ 28.553516][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.560545][ T368] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.568557][ T368] device bridge_slave_1 entered promiscuous mode [ 28.622680][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 28.630161][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.639098][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 28.647616][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.655949][ T330] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.663043][ T330] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.671819][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 28.679583][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 28.688249][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.696487][ T330] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.703538][ T330] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.715527][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 28.725419][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 28.739223][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 28.750400][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 28.758602][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 28.766236][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 28.774572][ T368] device veth0_vlan entered promiscuous mode [ 28.784839][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 28.794307][ T368] device veth1_macvtap entered promiscuous mode [ 28.804539][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.814616][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 28.837931][ T372] ================================================================== [ 28.846063][ T372] BUG: KASAN: use-after-free in mutex_lock+0x8e/0x1c0 [ 28.852875][ T372] Write of size 8 at addr ffff88811dead150 by task syz.2.17/372 [ 28.860521][ T372] [ 28.862899][ T372] CPU: 1 PID: 372 Comm: syz.2.17 Not tainted syzkaller #0 [ 28.870548][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 28.880620][ T372] Call Trace: [ 28.883911][ T372] [ 28.886861][ T372] __dump_stack+0x21/0x30 [ 28.891199][ T372] dump_stack_lvl+0x110/0x170 [ 28.895877][ T372] ? show_regs_print_info+0x20/0x20 [ 28.901087][ T372] ? load_image+0x3f0/0x3f0 [ 28.905603][ T372] print_address_description+0x7f/0x2c0 [ 28.911152][ T372] ? mutex_lock+0x8e/0x1c0 [ 28.915568][ T372] kasan_report+0x10f/0x150 [ 28.920071][ T372] ? mutex_lock+0x8e/0x1c0 [ 28.924574][ T372] kasan_check_range+0x249/0x2a0 [ 28.929513][ T372] __kasan_check_write+0x14/0x20 [ 28.934448][ T372] mutex_lock+0x8e/0x1c0 [ 28.938696][ T372] ? wait_for_completion_killable_timeout+0x10/0x10 [ 28.945284][ T372] ? l2tp_session_put+0xaf/0x1a0 [ 28.950221][ T372] ? l2tp_session_delete+0x3a9/0x4a0 [ 28.955532][ T372] pppol2tp_release+0x178/0x2b0 [ 28.960382][ T372] sock_close+0xb8/0x200 [ 28.964799][ T372] ? sock_mmap+0xa0/0xa0 [ 28.969062][ T372] __fput+0x22b/0x900 [ 28.973070][ T372] ____fput+0x15/0x20 [ 28.977087][ T372] task_work_run+0x127/0x190 [ 28.981711][ T372] exit_to_user_mode_loop+0xd0/0xe0 [ 28.986917][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 28.992401][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 28.997885][ T372] do_syscall_64+0x58/0xa0 [ 29.002334][ T372] ? clear_bhb_loop+0x50/0xa0 [ 29.007015][ T372] ? clear_bhb_loop+0x50/0xa0 [ 29.011711][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 29.017610][ T372] RIP: 0033:0x7fb9ad87ae59 [ 29.022040][ 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 [ 29.041772][ T372] RSP: 002b:00007ffc8b8e5e88 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 29.050215][ T372] RAX: 0000000000000000 RBX: 00007ffc8b8e5f70 RCX: 00007fb9ad87ae59 [ 29.058209][ T372] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 29.066190][ T372] RBP: 0000000000007083 R08: 0000000000000001 R09: 0000000000000000 [ 29.074417][ T372] R10: 0000001b32f20000 R11: 0000000000000246 R12: 0000000000000000 [ 29.082400][ T372] R13: 00007fb9adb02fac R14: 00007fb9adb02fa8 R15: 00007fb9adb02fa0 [ 29.090527][ T372] [ 29.093738][ T372] [ 29.096061][ T372] Allocated by task 372: [ 29.100292][ T372] __kasan_kmalloc+0xd4/0x100 [ 29.104995][ T372] __kmalloc+0x13d/0x2c0 [ 29.109264][ T372] l2tp_session_create+0x39/0xb60 [ 29.114289][ T372] pppol2tp_connect+0xbf5/0x1640 [ 29.119234][ T372] __sys_connect+0x3cb/0x450 [ 29.123847][ T372] __x64_sys_connect+0x7a/0x90 [ 29.128616][ T372] x64_sys_call+0x7c/0x9a0 [ 29.133031][ T372] do_syscall_64+0x4c/0xa0 [ 29.137465][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 29.143363][ T372] [ 29.145715][ T372] Freed by task 372: [ 29.149743][ T372] kasan_set_track+0x4a/0x70 [ 29.154349][ T372] kasan_set_free_info+0x23/0x40 [ 29.159291][ T372] ____kasan_slab_free+0x125/0x160 [ 29.164402][ T372] __kasan_slab_free+0x11/0x20 [ 29.169170][ T372] slab_free_freelist_hook+0xc2/0x190 [ 29.174542][ T372] kfree+0xc4/0x270 [ 29.178347][ T372] l2tp_session_put+0xaf/0x1a0 [ 29.183108][ T372] l2tp_session_delete+0x3a9/0x4a0 [ 29.188344][ T372] pppol2tp_release+0x169/0x2b0 [ 29.193273][ T372] sock_close+0xb8/0x200 [ 29.197541][ T372] __fput+0x22b/0x900 [ 29.201524][ T372] ____fput+0x15/0x20 [ 29.205510][ T372] task_work_run+0x127/0x190 [ 29.210102][ T372] exit_to_user_mode_loop+0xd0/0xe0 [ 29.215320][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 29.220784][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 29.226240][ T372] do_syscall_64+0x58/0xa0 [ 29.230681][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 29.236574][ T372] [ 29.238920][ T372] The buggy address belongs to the object at ffff88811dead000 [ 29.238920][ T372] which belongs to the cache kmalloc-512 of size 512 [ 29.252996][ T372] The buggy address is located 336 bytes inside of [ 29.252996][ T372] 512-byte region [ffff88811dead000, ffff88811dead200) [ 29.266298][ T372] The buggy address belongs to the page: [ 29.271928][ T372] page:ffffea000477ab00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11deac [ 29.282335][ T372] head:ffffea000477ab00 order:2 compound_mapcount:0 compound_pincount:0 [ 29.290674][ T372] flags: 0x4000000000010200(slab|head|zone=1) [ 29.296786][ T372] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 29.305382][ T372] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 29.313959][ T372] page dumped because: kasan: bad access detected [ 29.320365][ T372] page_owner tracks the page as allocated [ 29.326085][ 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 372, ts 28837384527, free_ts 27423434293 [ 29.346486][ T372] post_alloc_hook+0x192/0x1b0 [ 29.351254][ T372] prep_new_page+0x1c/0x110 [ 29.355756][ T372] get_page_from_freelist+0x2c3a/0x2cd0 [ 29.361304][ T372] __alloc_pages+0x1a2/0x460 [ 29.365927][ T372] new_slab+0xa0/0x4d0 [ 29.369999][ T372] ___slab_alloc+0x3ac/0x840 [ 29.375033][ T372] __slab_alloc+0x49/0x90 [ 29.379359][ T372] kmem_cache_alloc_trace+0x146/0x270 [ 29.384737][ T372] l2tp_tunnel_create+0x97/0x460 [ 29.389674][ T372] pppol2tp_connect+0x7ef/0x1640 [ 29.394628][ T372] __sys_connect+0x3cb/0x450 [ 29.399218][ T372] __x64_sys_connect+0x7a/0x90 [ 29.404004][ T372] x64_sys_call+0x7c/0x9a0 [ 29.408424][ T372] do_syscall_64+0x4c/0xa0 [ 29.412841][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 29.418767][ T372] page last free stack trace: [ 29.423432][ T372] free_unref_page_prepare+0x5fa/0x600 [ 29.428893][ T372] free_unref_page+0xae/0x540 [ 29.433568][ T372] __free_pages+0x6c/0x100 [ 29.437997][ T372] __vunmap+0x801/0x980 [ 29.442180][ T372] vfree+0x8b/0xc0 [ 29.445900][ T372] kcov_close+0x2b/0x50 [ 29.450057][ T372] __fput+0x22b/0x900 [ 29.454039][ T372] ____fput+0x15/0x20 [ 29.458017][ T372] task_work_run+0x127/0x190 [ 29.462604][ T372] do_exit+0xb70/0x29a0 [ 29.466759][ T372] do_group_exit+0x149/0x310 [ 29.471342][ T372] get_signal+0x64f/0x1430 [ 29.475756][ T372] arch_do_signal_or_restart+0xe2/0x1100 [ 29.481384][ T372] exit_to_user_mode_loop+0xa7/0xe0 [ 29.486595][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 29.492051][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 29.497525][ T372] [ 29.499847][ T372] Memory state around the buggy address: [ 29.505558][ T372] ffff88811dead000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.513613][ T372] ffff88811dead080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.521671][ T372] >ffff88811dead100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.529727][ T372] ^ [ 29.536398][ T372] ffff88811dead180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.544453][ T372] ffff88811dead200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.552514][ T372] ================================================================== [ 29.560570][ T372] Disabling lock debugging due to kernel taint