Warning: Permanently added '10.128.1.134' (ED25519) to the list of known hosts. 2026/07/31 05:12:04 parsed 1 programs 2026/07/31 05:12:04 serving rpc on tcp://33407 [ 24.292129][ T24] audit: type=1400 audit(1785474724.400:64): avc: denied { node_bind } for pid=287 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 24.312864][ T24] audit: type=1400 audit(1785474724.400:65): avc: denied { create } for pid=287 comm="syz-execprog" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=rawip_socket permissive=1 [ 24.332401][ T24] audit: type=1400 audit(1785474724.400:66): avc: denied { module_request } for pid=287 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 [ 24.908068][ T24] audit: type=1400 audit(1785474725.010:67): avc: denied { mounton } for pid=293 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 [ 24.909065][ T293] cgroup: Unknown subsys name 'net' [ 24.930809][ T24] audit: type=1400 audit(1785474725.010:68): avc: denied { mount } for pid=293 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 [ 24.958054][ T24] audit: type=1400 audit(1785474725.050:69): avc: denied { unmount } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 24.958217][ T293] cgroup: Unknown subsys name 'devices' [ 25.100762][ T293] cgroup: Unknown subsys name 'hugetlb' [ 25.106356][ T293] cgroup: Unknown subsys name 'rlimit' [ 25.219650][ T24] audit: type=1400 audit(1785474725.330:70): avc: denied { setattr } for pid=293 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=253 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 25.242947][ T24] audit: type=1400 audit(1785474725.330:71): avc: denied { create } for pid=293 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 [ 25.248013][ T297] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 25.263494][ T24] audit: type=1400 audit(1785474725.330:72): avc: denied { write } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.292086][ T24] audit: type=1400 audit(1785474725.330:73): avc: denied { read } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.320720][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 25.715206][ T299] request_module fs-gadgetfs succeeded, but still no fs? [ 25.725645][ T299] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 26.226219][ T348] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.233977][ T348] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.241414][ T348] device bridge_slave_0 entered promiscuous mode [ 26.248219][ T348] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.255302][ T348] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.262789][ T348] device bridge_slave_1 entered promiscuous mode [ 26.294187][ T348] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.301235][ T348] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.308464][ T348] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.315483][ T348] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.330670][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.338227][ T112] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.345840][ T112] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.354277][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.362511][ T112] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.369540][ T112] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.382606][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.390758][ T112] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.397753][ T112] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.409034][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.418024][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.435732][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.453082][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.461161][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.468483][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.476547][ T348] device veth0_vlan entered promiscuous mode [ 26.492447][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.501419][ T348] device veth1_macvtap entered promiscuous mode [ 26.509925][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.523393][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/07/31 05:12:06 executed programs: 0 [ 26.729975][ T364] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.737006][ T364] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.744510][ T364] device bridge_slave_0 entered promiscuous mode [ 26.752108][ T364] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.759136][ T364] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.766552][ T364] device bridge_slave_1 entered promiscuous mode [ 26.802797][ T364] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.809847][ T364] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.817056][ T364] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.824087][ T364] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.844025][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.859475][ T112] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.866702][ T112] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.881076][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.889977][ T112] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.897002][ T112] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.904419][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.912873][ T112] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.919912][ T112] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.927287][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.935421][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.948498][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 26.956857][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.967469][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 26.975502][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.983887][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.991293][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.000119][ T364] device veth0_vlan entered promiscuous mode [ 27.009063][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 27.017189][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.026135][ T364] device veth1_macvtap entered promiscuous mode [ 27.034704][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 27.042456][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 27.050629][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.059977][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 27.068152][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.088272][ T407] ================================================================== [ 27.096458][ T407] BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 [ 27.103114][ T407] Write of size 8 at addr ffff888111424550 by task syz.2.17/407 [ 27.110710][ T407] [ 27.113025][ T407] CPU: 1 PID: 407 Comm: syz.2.17 Not tainted syzkaller #0 [ 27.120100][ T407] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 27.130127][ T407] Call Trace: [ 27.133393][ T407] __dump_stack+0x21/0x24 [ 27.137713][ T407] dump_stack_lvl+0x1a7/0x208 [ 27.142365][ T407] ? show_regs_print_info+0x18/0x18 [ 27.147534][ T407] ? thaw_kernel_threads+0x220/0x220 [ 27.152795][ T407] ? debug_smp_processor_id+0x17/0x20 [ 27.158137][ T407] print_address_description+0x7f/0x2c0 [ 27.163652][ T407] ? mutex_lock+0x85/0xf0 [ 27.167967][ T407] kasan_report+0x100/0x140 [ 27.172440][ T407] ? mutex_lock+0x85/0xf0 [ 27.176753][ T407] kasan_check_range+0x249/0x2a0 [ 27.181667][ T407] __kasan_check_write+0x14/0x20 [ 27.186573][ T407] mutex_lock+0x85/0xf0 [ 27.190697][ T407] ? mutex_trylock+0xb0/0xb0 [ 27.195258][ T407] ? l2tp_session_put+0xb2/0x1a0 [ 27.200168][ T407] ? l2tp_session_delete+0x3a9/0x4a0 [ 27.205442][ T407] pppol2tp_release+0x178/0x2b0 [ 27.210269][ T407] sock_close+0xb8/0x200 [ 27.214483][ T407] ? sock_mmap+0xa0/0xa0 [ 27.218720][ T407] __fput+0x2dc/0x730 [ 27.222676][ T407] ____fput+0x15/0x20 [ 27.226631][ T407] task_work_run+0x127/0x190 [ 27.231195][ T407] exit_to_user_mode_loop+0xcb/0xe0 [ 27.236378][ T407] exit_to_user_mode_prepare+0x76/0xa0 [ 27.241815][ T407] syscall_exit_to_user_mode+0x1d/0x40 [ 27.247265][ T407] do_syscall_64+0x3d/0x40 [ 27.251677][ T407] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 27.257543][ T407] RIP: 0033:0x7f4c11d0b019 [ 27.261931][ T407] 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 [ 27.281632][ T407] RSP: 002b:00007ffceaff4908 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 27.290035][ T407] RAX: 0000000000000000 RBX: 00007ffceaff49f0 RCX: 00007f4c11d0b019 [ 27.297989][ T407] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 27.305944][ T407] RBP: 00000000000069bb R08: 0000000000000001 R09: 0000000000000000 [ 27.313889][ T407] R10: 0000001b32b20000 R11: 0000000000000246 R12: 0000000000000000 [ 27.321836][ T407] R13: 00007f4c11f92fac R14: 00007f4c11f92fa8 R15: 00007f4c11f92fa0 [ 27.329912][ T407] [ 27.332219][ T407] Allocated by task 407: [ 27.336443][ T407] __kasan_kmalloc+0xd4/0x100 [ 27.341107][ T407] __kmalloc+0x19f/0x330 [ 27.345324][ T407] l2tp_session_create+0x39/0xb60 [ 27.350321][ T407] pppol2tp_connect+0xbf5/0x1640 [ 27.355228][ T407] __sys_connect+0x3ce/0x450 [ 27.359788][ T407] __x64_sys_connect+0x7a/0x90 [ 27.364536][ T407] do_syscall_64+0x31/0x40 [ 27.368938][ T407] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 27.374813][ T407] [ 27.377118][ T407] Freed by task 407: [ 27.380989][ T407] kasan_set_track+0x4a/0x70 [ 27.385546][ T407] kasan_set_free_info+0x23/0x40 [ 27.390471][ T407] ____kasan_slab_free+0x125/0x160 [ 27.395553][ T407] __kasan_slab_free+0x11/0x20 [ 27.400284][ T407] slab_free_freelist_hook+0xc5/0x190 [ 27.405646][ T407] kfree+0xc0/0x270 [ 27.409555][ T407] l2tp_session_put+0xb2/0x1a0 [ 27.414287][ T407] l2tp_session_delete+0x3a9/0x4a0 [ 27.419367][ T407] pppol2tp_release+0x169/0x2b0 [ 27.424188][ T407] sock_close+0xb8/0x200 [ 27.428417][ T407] __fput+0x2dc/0x730 [ 27.432370][ T407] ____fput+0x15/0x20 [ 27.436321][ T407] task_work_run+0x127/0x190 [ 27.440879][ T407] exit_to_user_mode_loop+0xcb/0xe0 [ 27.446044][ T407] exit_to_user_mode_prepare+0x76/0xa0 [ 27.451475][ T407] syscall_exit_to_user_mode+0x1d/0x40 [ 27.456903][ T407] do_syscall_64+0x3d/0x40 [ 27.461290][ T407] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 27.467152][ T407] [ 27.469460][ T407] The buggy address belongs to the object at ffff888111424400 [ 27.469460][ T407] which belongs to the cache kmalloc-512 of size 512 [ 27.483492][ T407] The buggy address is located 336 bytes inside of [ 27.483492][ T407] 512-byte region [ffff888111424400, ffff888111424600) [ 27.496731][ T407] The buggy address belongs to the page: [ 27.502359][ T407] page:ffffea0004450900 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x111424 [ 27.512563][ T407] head:ffffea0004450900 order:2 compound_mapcount:0 compound_pincount:0 [ 27.520859][ T407] flags: 0x4000000000010200(slab|head) [ 27.526295][ T407] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 27.534853][ T407] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 27.543405][ T407] page dumped because: kasan: bad access detected [ 27.549790][ T407] page_owner tracks the page as allocated [ 27.555504][ T407] 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 364, ts 27080037867, free_ts 26983406282 [ 27.575870][ T407] prep_new_page+0x176/0x190 [ 27.580604][ T407] get_page_from_freelist+0x225f/0x23f0 [ 27.586150][ T407] __alloc_pages_nodemask+0x29a/0x640 [ 27.591501][ T407] new_slab+0x84/0x3f0 [ 27.595548][ T407] ___slab_alloc+0x2f8/0x4c0 [ 27.600110][ T407] __slab_alloc+0x63/0xa0 [ 27.604418][ T407] kmem_cache_alloc_trace+0x1a8/0x2e0 [ 27.609765][ T407] rtnl_newlink+0x14b/0x1830 [ 27.614328][ T407] rtnetlink_rcv_msg+0x9e9/0xca0 [ 27.619405][ T407] netlink_rcv_skb+0x1e9/0x430 [ 27.624150][ T407] rtnetlink_rcv+0x1c/0x20 [ 27.628549][ T407] netlink_unicast+0x86c/0xa30 [ 27.633290][ T407] netlink_sendmsg+0x949/0xb70 [ 27.638031][ T407] __sys_sendto+0x467/0x620 [ 27.642509][ T407] __x64_sys_sendto+0xe5/0x100 [ 27.647247][ T407] do_syscall_64+0x31/0x40 [ 27.651640][ T407] page last free stack trace: [ 27.656299][ T407] __free_pages_ok+0x80b/0x830 [ 27.661037][ T407] __free_pages+0xd8/0x390 [ 27.665429][ T407] __free_slab+0xcf/0x190 [ 27.669730][ T407] unfreeze_partials+0x150/0x180 [ 27.674642][ T407] put_cpu_partial+0xc1/0x180 [ 27.679294][ T407] __slab_free+0x2c9/0x3a0 [ 27.683693][ T407] ___cache_free+0x10e/0x130 [ 27.688256][ T407] qlink_free+0x50/0x90 [ 27.692385][ T407] qlist_free_all+0x5f/0xb0 [ 27.696868][ T407] kasan_quarantine_reduce+0x14a/0x160 [ 27.702301][ T407] __kasan_slab_alloc+0x2f/0xe0 [ 27.707124][ T407] slab_post_alloc_hook+0x5d/0x2f0 [ 27.712210][ T407] kmem_cache_alloc_trace+0x155/0x2e0 [ 27.717554][ T407] syslog_print+0x127/0x720 [ 27.722027][ T407] do_syslog+0x94c/0x9a0 [ 27.726244][ T407] __x64_sys_syslog+0x7c/0x90 [ 27.730888][ T407] [ 27.733187][ T407] Memory state around the buggy address: [ 27.738790][ T407] ffff888111424400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.746828][ T407] ffff888111424480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.754863][ T407] >ffff888111424500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.762894][ T407] ^ [ 27.769537][ T407] ffff888111424580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.777571][ T407] ffff888111424600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.785602][ T407] ================================================================== [ 27.793639][ T407] Disabling lock debugging due to kernel taint