Warning: Permanently added '10.128.0.64' (ED25519) to the list of known hosts. 2026/06/25 17:48:52 parsed 1 programs 2026/06/25 17:48:52 serving rpc on tcp://43843 [ 24.130435][ T24] audit: type=1400 audit(1782409732.200:64): 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 [ 24.152658][ T24] audit: type=1400 audit(1782409732.200:65): 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 [ 24.172581][ T24] audit: type=1400 audit(1782409732.200:66): 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 [ 25.082784][ T24] audit: type=1400 audit(1782409733.150:67): 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 [ 25.086932][ T293] cgroup: Unknown subsys name 'net' [ 25.105614][ T24] audit: type=1400 audit(1782409733.160:68): 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 [ 25.132927][ T24] audit: type=1400 audit(1782409733.180:69): 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 [ 25.133613][ T293] cgroup: Unknown subsys name 'devices' [ 25.244944][ T293] cgroup: Unknown subsys name 'hugetlb' [ 25.250587][ T293] cgroup: Unknown subsys name 'rlimit' [ 25.401323][ T24] audit: type=1400 audit(1782409733.470:70): 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 [ 25.424565][ T24] audit: type=1400 audit(1782409733.470:71): 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 [ 25.445137][ T24] audit: type=1400 audit(1782409733.470:72): 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 [ 25.458302][ T298] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 25.466011][ T24] audit: type=1400 audit(1782409733.470:73): 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 [ 25.494634][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 25.953214][ T301] request_module fs-gadgetfs succeeded, but still no fs? [ 25.964647][ T301] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 26.080586][ T310] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.087729][ T310] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.095223][ T310] device bridge_slave_0 entered promiscuous mode [ 26.102118][ T310] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.109224][ T310] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.116630][ T310] device bridge_slave_1 entered promiscuous mode [ 26.158599][ T310] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.165685][ T310] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.173026][ T310] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.180069][ T310] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.198715][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.206004][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.213836][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 26.221273][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.230626][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.238954][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.246028][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.255987][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.264302][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.271329][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.283930][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.294150][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.307975][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.319916][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.328270][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.336020][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.345217][ T310] device veth0_vlan entered promiscuous mode [ 26.356364][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.365948][ T310] device veth1_macvtap entered promiscuous mode [ 26.375562][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.386885][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.004638][ T9] device bridge_slave_1 left promiscuous mode [ 27.010918][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.027627][ T9] device bridge_slave_0 left promiscuous mode [ 27.035693][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.044234][ T9] device veth1_macvtap left promiscuous mode [ 27.050263][ T9] device veth0_vlan left promiscuous mode 2026/06/25 17:48:55 executed programs: 0 [ 27.313411][ T365] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.320486][ T365] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.327992][ T365] device bridge_slave_0 entered promiscuous mode [ 27.334859][ T365] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.341888][ T365] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.349354][ T365] device bridge_slave_1 entered promiscuous mode [ 27.391572][ T365] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.398741][ T365] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.406044][ T365] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.413147][ T365] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.429969][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.437863][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.445610][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.455041][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.463366][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.470418][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.488740][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.496962][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.504015][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.511729][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.520213][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.530967][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.544451][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.552454][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.560148][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.569053][ T365] device veth0_vlan entered promiscuous mode [ 27.579154][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.588423][ T365] device veth1_macvtap entered promiscuous mode [ 27.597641][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.607583][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.631633][ T382] ================================================================== [ 27.639801][ T382] BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 [ 27.646481][ T382] Write of size 8 at addr ffff8881115eb550 by task syz.2.17/382 [ 27.654097][ T382] [ 27.656432][ T382] CPU: 0 PID: 382 Comm: syz.2.17 Not tainted syzkaller #0 [ 27.663526][ T382] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 27.673570][ T382] Call Trace: [ 27.676855][ T382] __dump_stack+0x21/0x24 [ 27.681175][ T382] dump_stack_lvl+0x1a7/0x208 [ 27.685852][ T382] ? show_regs_print_info+0x18/0x18 [ 27.691059][ T382] ? thaw_kernel_threads+0x220/0x220 [ 27.696358][ T382] ? debug_smp_processor_id+0x17/0x20 [ 27.701726][ T382] print_address_description+0x7f/0x2c0 [ 27.707265][ T382] ? mutex_lock+0x85/0xf0 [ 27.711586][ T382] kasan_report+0x100/0x140 [ 27.716080][ T382] ? mutex_lock+0x85/0xf0 [ 27.720416][ T382] kasan_check_range+0x249/0x2a0 [ 27.725345][ T382] __kasan_check_write+0x14/0x20 [ 27.730271][ T382] mutex_lock+0x85/0xf0 [ 27.734424][ T382] ? mutex_trylock+0xb0/0xb0 [ 27.738999][ T382] ? l2tp_session_put+0xb2/0x1a0 [ 27.743919][ T382] ? l2tp_session_delete+0x3a9/0x4a0 [ 27.749200][ T382] pppol2tp_release+0x178/0x2b0 [ 27.754040][ T382] sock_close+0xb8/0x200 [ 27.758290][ T382] ? sock_mmap+0xa0/0xa0 [ 27.762543][ T382] __fput+0x2dc/0x730 [ 27.766512][ T382] ____fput+0x15/0x20 [ 27.770483][ T382] task_work_run+0x127/0x190 [ 27.775075][ T382] exit_to_user_mode_loop+0xcb/0xe0 [ 27.780274][ T382] exit_to_user_mode_prepare+0x76/0xa0 [ 27.785742][ T382] syscall_exit_to_user_mode+0x1d/0x40 [ 27.791188][ T382] do_syscall_64+0x3d/0x40 [ 27.795607][ T382] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 27.801509][ T382] RIP: 0033:0x7ff990490e59 [ 27.805927][ T382] 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 [ 27.825533][ T382] RSP: 002b:00007ffd9481dc88 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 27.833939][ T382] RAX: 0000000000000000 RBX: 00007ffd9481dd70 RCX: 00007ff990490e59 [ 27.841925][ T382] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 27.849908][ T382] RBP: 0000000000006bcc R08: 0000000000000001 R09: 0000000000000000 [ 27.857894][ T382] R10: 0000001b32c20000 R11: 0000000000000246 R12: 0000000000000000 [ 27.865860][ T382] R13: 00007ff990709fac R14: 00007ff990709fa8 R15: 00007ff990709fa0 [ 27.873840][ T382] [ 27.876158][ T382] Allocated by task 382: [ 27.880587][ T382] __kasan_kmalloc+0xd4/0x100 [ 27.885338][ T382] __kmalloc+0x19f/0x330 [ 27.889613][ T382] l2tp_session_create+0x39/0xb60 [ 27.894637][ T382] pppol2tp_connect+0xbf5/0x1640 [ 27.899567][ T382] __sys_connect+0x3ce/0x450 [ 27.904175][ T382] __x64_sys_connect+0x7a/0x90 [ 27.908934][ T382] do_syscall_64+0x31/0x40 [ 27.913347][ T382] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 27.919234][ T382] [ 27.921577][ T382] Freed by task 382: [ 27.925486][ T382] kasan_set_track+0x4a/0x70 [ 27.930079][ T382] kasan_set_free_info+0x23/0x40 [ 27.935036][ T382] ____kasan_slab_free+0x125/0x160 [ 27.940140][ T382] __kasan_slab_free+0x11/0x20 [ 27.944893][ T382] slab_free_freelist_hook+0xc5/0x190 [ 27.950261][ T382] kfree+0xc0/0x270 [ 27.954214][ T382] l2tp_session_put+0xb2/0x1a0 [ 27.958978][ T382] l2tp_session_delete+0x3a9/0x4a0 [ 27.964091][ T382] pppol2tp_release+0x169/0x2b0 [ 27.968979][ T382] sock_close+0xb8/0x200 [ 27.973254][ T382] __fput+0x2dc/0x730 [ 27.977241][ T382] ____fput+0x15/0x20 [ 27.981224][ T382] task_work_run+0x127/0x190 [ 27.985817][ T382] exit_to_user_mode_loop+0xcb/0xe0 [ 27.991018][ T382] exit_to_user_mode_prepare+0x76/0xa0 [ 27.996483][ T382] syscall_exit_to_user_mode+0x1d/0x40 [ 28.001946][ T382] do_syscall_64+0x3d/0x40 [ 28.006450][ T382] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.012343][ T382] [ 28.014676][ T382] The buggy address belongs to the object at ffff8881115eb400 [ 28.014676][ T382] which belongs to the cache kmalloc-512 of size 512 [ 28.028734][ T382] The buggy address is located 336 bytes inside of [ 28.028734][ T382] 512-byte region [ffff8881115eb400, ffff8881115eb600) [ 28.042007][ T382] The buggy address belongs to the page: [ 28.047677][ T382] page:ffffea0004457a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1115e8 [ 28.057915][ T382] head:ffffea0004457a00 order:2 compound_mapcount:0 compound_pincount:0 [ 28.066260][ T382] flags: 0x4000000000010200(slab|head) [ 28.071728][ T382] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 28.080321][ T382] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 28.088936][ T382] page dumped because: kasan: bad access detected [ 28.095467][ T382] page_owner tracks the page as allocated [ 28.101217][ T382] 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 365, ts 27619172947, free_ts 27617322413 [ 28.121665][ T382] prep_new_page+0x176/0x190 [ 28.126266][ T382] get_page_from_freelist+0x225f/0x23f0 [ 28.131816][ T382] __alloc_pages_nodemask+0x29a/0x640 [ 28.137198][ T382] new_slab+0x84/0x3f0 [ 28.141288][ T382] ___slab_alloc+0x2f8/0x4c0 [ 28.145915][ T382] __slab_alloc+0x63/0xa0 [ 28.150264][ T382] __kmalloc+0x1f9/0x330 [ 28.154543][ T382] qdisc_alloc+0x79/0x720 [ 28.158889][ T382] qdisc_create_dflt+0x6b/0x390 [ 28.163754][ T382] dev_activate+0x292/0x11c0 [ 28.168366][ T382] __dev_open+0x3e9/0x500 [ 28.172715][ T382] __dev_change_flags+0x1e4/0x6a0 [ 28.177745][ T382] dev_change_flags+0x80/0x1a0 [ 28.182513][ T382] do_setlink+0xb19/0x29a0 [ 28.186935][ T382] rtnl_newlink+0x13e6/0x1830 [ 28.191622][ T382] rtnetlink_rcv_msg+0x9e9/0xca0 [ 28.196563][ T382] page last free stack trace: [ 28.201252][ T382] __free_pages_ok+0x80b/0x830 [ 28.206034][ T382] __free_pages+0xd8/0x390 [ 28.210454][ T382] __free_slab+0xcf/0x190 [ 28.214796][ T382] unfreeze_partials+0x150/0x180 [ 28.219736][ T382] put_cpu_partial+0xc1/0x180 [ 28.224421][ T382] __slab_free+0x2c9/0x3a0 [ 28.228853][ T382] ___cache_free+0x10e/0x130 [ 28.233451][ T382] qlink_free+0x50/0x90 [ 28.237612][ T382] qlist_free_all+0x5f/0xb0 [ 28.242120][ T382] kasan_quarantine_reduce+0x14a/0x160 [ 28.247579][ T382] __kasan_slab_alloc+0x2f/0xe0 [ 28.252434][ T382] slab_post_alloc_hook+0x5d/0x2f0 [ 28.257554][ T382] kmem_cache_alloc+0x15a/0x2d0 [ 28.262414][ T382] __alloc_skb+0x9e/0x520 [ 28.266750][ T382] netlink_sendmsg+0x693/0xb70 [ 28.271524][ T382] __sys_sendto+0x467/0x620 [ 28.276025][ T382] [ 28.278353][ T382] Memory state around the buggy address: [ 28.283984][ T382] ffff8881115eb400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.292061][ T382] ffff8881115eb480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.300137][ T382] >ffff8881115eb500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.308203][ T382] ^ [ 28.314882][ T382] ffff8881115eb580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.322982][ T382] ffff8881115eb600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.331046][ T382] ================================================================== [ 28.339105][ T382] Disabling lock debugging due to kernel taint