Warning: Permanently added '10.128.0.18' (ED25519) to the list of known hosts. 2026/09/02 17:35:37 parsed 1 programs 2026/09/02 17:35:37 serving rpc on tcp://42243 [ 25.140015][ T24] audit: type=1400 audit(1788370537.190:64): 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 [ 25.161235][ T24] audit: type=1400 audit(1788370537.190:65): 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 [ 25.181319][ T24] audit: type=1400 audit(1788370537.190:66): 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 [ 26.128742][ T24] audit: type=1400 audit(1788370538.180:67): 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 [ 26.132097][ T293] cgroup: Unknown subsys name 'net' [ 26.151514][ T24] audit: type=1400 audit(1788370538.180:68): 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 [ 26.178750][ T24] audit: type=1400 audit(1788370538.210:69): 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 [ 26.179211][ T293] cgroup: Unknown subsys name 'devices' [ 26.290071][ T293] cgroup: Unknown subsys name 'hugetlb' [ 26.295780][ T293] cgroup: Unknown subsys name 'rlimit' [ 26.442810][ T24] audit: type=1400 audit(1788370538.490:70): 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 [ 26.466026][ T24] audit: type=1400 audit(1788370538.490:71): 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 [ 26.486402][ T24] audit: type=1400 audit(1788370538.490:72): 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 [ 26.506730][ T24] audit: type=1400 audit(1788370538.490:73): 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 [ 26.525793][ T297] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 26.548467][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 26.951564][ T300] request_module fs-gadgetfs succeeded, but still no fs? [ 26.962448][ T300] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 27.552798][ T349] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.560516][ T349] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.567989][ T349] device bridge_slave_0 entered promiscuous mode [ 27.574952][ T349] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.582069][ T349] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.589485][ T349] device bridge_slave_1 entered promiscuous mode [ 27.628422][ T349] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.635478][ T349] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.642795][ T349] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.649837][ T349] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.667571][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.675165][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.682606][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.691411][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.699632][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.706662][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.715337][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.723684][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.730741][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.748546][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.757770][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.771557][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.787182][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.795656][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.803401][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.811788][ T349] device veth0_vlan entered promiscuous mode [ 27.825914][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.834969][ T349] device veth1_macvtap entered promiscuous mode [ 27.849280][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.859151][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/09/02 17:35:40 executed programs: 0 [ 28.168931][ T389] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.176001][ T389] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.184648][ T389] device bridge_slave_0 entered promiscuous mode [ 28.191915][ T389] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.198977][ T389] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.206331][ T389] device bridge_slave_1 entered promiscuous mode [ 28.245654][ T389] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.252761][ T389] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.260181][ T389] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.267213][ T389] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.285721][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.294076][ T311] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.301336][ T311] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.310461][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.319184][ T311] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.326319][ T311] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.334828][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.343101][ T311] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.350153][ T311] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.361876][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 28.374307][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 28.387929][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 28.396398][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 28.410135][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 28.418147][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 28.426236][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 28.433888][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 28.442186][ T389] device veth0_vlan entered promiscuous mode [ 28.454611][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 28.462965][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 28.471978][ T389] device veth1_macvtap entered promiscuous mode [ 28.481020][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 28.488872][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 28.497012][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.509563][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 28.517782][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 28.540390][ T399] ================================================================== [ 28.548503][ T399] BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 [ 28.555173][ T399] Write of size 8 at addr ffff888111a51150 by task syz.2.17/399 [ 28.562803][ T399] [ 28.565138][ T399] CPU: 1 PID: 399 Comm: syz.2.17 Not tainted syzkaller #0 [ 28.572233][ T399] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 28.582302][ T399] Call Trace: [ 28.585592][ T399] __dump_stack+0x21/0x24 [ 28.589915][ T399] dump_stack_lvl+0x1a7/0x208 [ 28.594587][ T399] ? show_regs_print_info+0x18/0x18 [ 28.599783][ T399] ? thaw_kernel_threads+0x220/0x220 [ 28.605064][ T399] ? debug_smp_processor_id+0x17/0x20 [ 28.610428][ T399] print_address_description+0x7f/0x2c0 [ 28.615965][ T399] ? mutex_lock+0x85/0xf0 [ 28.620296][ T399] kasan_report+0x100/0x140 [ 28.624919][ T399] ? mutex_lock+0x85/0xf0 [ 28.629250][ T399] kasan_check_range+0x249/0x2a0 [ 28.634187][ T399] __kasan_check_write+0x14/0x20 [ 28.639132][ T399] mutex_lock+0x85/0xf0 [ 28.643404][ T399] ? mutex_trylock+0xb0/0xb0 [ 28.648003][ T399] ? l2tp_session_put+0xb2/0x1a0 [ 28.653101][ T399] ? l2tp_session_delete+0x3a9/0x4a0 [ 28.658390][ T399] pppol2tp_release+0x178/0x2b0 [ 28.663240][ T399] sock_close+0xb8/0x200 [ 28.667494][ T399] ? sock_mmap+0xa0/0xa0 [ 28.671735][ T399] __fput+0x2dc/0x730 [ 28.675716][ T399] ____fput+0x15/0x20 [ 28.679719][ T399] task_work_run+0x127/0x190 [ 28.684323][ T399] exit_to_user_mode_loop+0xcb/0xe0 [ 28.689515][ T399] exit_to_user_mode_prepare+0x76/0xa0 [ 28.694965][ T399] syscall_exit_to_user_mode+0x1d/0x40 [ 28.700417][ T399] do_syscall_64+0x3d/0x40 [ 28.704828][ T399] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.710713][ T399] RIP: 0033:0x7f9f10fbd159 [ 28.715123][ T399] 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 [ 28.734743][ T399] RSP: 002b:00007fff750bab58 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 28.743181][ T399] RAX: 0000000000000000 RBX: 00007fff750bac40 RCX: 00007f9f10fbd159 [ 28.751267][ T399] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 28.759349][ T399] RBP: 0000000000006f5d R08: 0000000000000001 R09: 0000000000000000 [ 28.767327][ T399] R10: 0000001b2c420000 R11: 0000000000000246 R12: 0000000000000000 [ 28.775321][ T399] R13: 00007f9f11244fac R14: 00007f9f11244fa8 R15: 00007f9f11244fa0 [ 28.783290][ T399] [ 28.785623][ T399] Allocated by task 399: [ 28.789875][ T399] __kasan_kmalloc+0xd4/0x100 [ 28.794544][ T399] __kmalloc+0x19f/0x330 [ 28.798769][ T399] l2tp_session_create+0x39/0xb60 [ 28.803782][ T399] pppol2tp_connect+0xbf5/0x1640 [ 28.808715][ T399] __sys_connect+0x3ce/0x450 [ 28.813293][ T399] __x64_sys_connect+0x7a/0x90 [ 28.818056][ T399] do_syscall_64+0x31/0x40 [ 28.822479][ T399] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.828378][ T399] [ 28.830700][ T399] Freed by task 399: [ 28.834590][ T399] kasan_set_track+0x4a/0x70 [ 28.839184][ T399] kasan_set_free_info+0x23/0x40 [ 28.844111][ T399] ____kasan_slab_free+0x125/0x160 [ 28.849216][ T399] __kasan_slab_free+0x11/0x20 [ 28.854059][ T399] slab_free_freelist_hook+0xc5/0x190 [ 28.859460][ T399] kfree+0xc0/0x270 [ 28.863286][ T399] l2tp_session_put+0xb2/0x1a0 [ 28.868145][ T399] l2tp_session_delete+0x3a9/0x4a0 [ 28.873245][ T399] pppol2tp_release+0x169/0x2b0 [ 28.878088][ T399] sock_close+0xb8/0x200 [ 28.882324][ T399] __fput+0x2dc/0x730 [ 28.886296][ T399] ____fput+0x15/0x20 [ 28.890266][ T399] task_work_run+0x127/0x190 [ 28.894846][ T399] exit_to_user_mode_loop+0xcb/0xe0 [ 28.900035][ T399] exit_to_user_mode_prepare+0x76/0xa0 [ 28.905494][ T399] syscall_exit_to_user_mode+0x1d/0x40 [ 28.910960][ T399] do_syscall_64+0x3d/0x40 [ 28.915370][ T399] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.921248][ T399] [ 28.923570][ T399] The buggy address belongs to the object at ffff888111a51000 [ 28.923570][ T399] which belongs to the cache kmalloc-512 of size 512 [ 28.937614][ T399] The buggy address is located 336 bytes inside of [ 28.937614][ T399] 512-byte region [ffff888111a51000, ffff888111a51200) [ 28.950870][ T399] The buggy address belongs to the page: [ 28.956522][ T399] page:ffffea0004469400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x111a50 [ 28.966898][ T399] head:ffffea0004469400 order:2 compound_mapcount:0 compound_pincount:0 [ 28.975216][ T399] flags: 0x4000000000010200(slab|head) [ 28.980690][ T399] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 28.989277][ T399] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 28.997852][ T399] page dumped because: kasan: bad access detected [ 29.004263][ T399] page_owner tracks the page as allocated [ 29.010010][ T399] 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 389, ts 28529578606, free_ts 28510047038 [ 29.030498][ T399] prep_new_page+0x176/0x190 [ 29.035091][ T399] get_page_from_freelist+0x225f/0x23f0 [ 29.040634][ T399] __alloc_pages_nodemask+0x29a/0x640 [ 29.046033][ T399] new_slab+0x84/0x3f0 [ 29.050104][ T399] ___slab_alloc+0x2f8/0x4c0 [ 29.054782][ T399] __slab_alloc+0x63/0xa0 [ 29.059115][ T399] __kmalloc_track_caller+0x1e4/0x310 [ 29.064489][ T399] __alloc_skb+0xdc/0x520 [ 29.068823][ T399] netlink_ack+0x35c/0xb30 [ 29.073242][ T399] netlink_rcv_skb+0x267/0x430 [ 29.078024][ T399] rtnetlink_rcv+0x1c/0x20 [ 29.082436][ T399] netlink_unicast+0x86c/0xa30 [ 29.087198][ T399] netlink_sendmsg+0x949/0xb70 [ 29.091966][ T399] __sys_sendto+0x467/0x620 [ 29.096475][ T399] __x64_sys_sendto+0xe5/0x100 [ 29.101242][ T399] do_syscall_64+0x31/0x40 [ 29.105654][ T399] page last free stack trace: [ 29.110354][ T399] __free_pages_ok+0x80b/0x830 [ 29.115127][ T399] __free_pages+0xd8/0x390 [ 29.119555][ T399] __free_slab+0xcf/0x190 [ 29.123887][ T399] unfreeze_partials+0x150/0x180 [ 29.128857][ T399] put_cpu_partial+0xc1/0x180 [ 29.133545][ T399] __slab_free+0x2c9/0x3a0 [ 29.137976][ T399] ___cache_free+0x10e/0x130 [ 29.142576][ T399] qlink_free+0x50/0x90 [ 29.146733][ T399] qlist_free_all+0x5f/0xb0 [ 29.151246][ T399] kasan_quarantine_reduce+0x14a/0x160 [ 29.156718][ T399] __kasan_slab_alloc+0x2f/0xe0 [ 29.161578][ T399] slab_post_alloc_hook+0x5d/0x2f0 [ 29.166746][ T399] kmem_cache_alloc+0x15a/0x2d0 [ 29.171613][ T399] __alloc_skb+0x9e/0x520 [ 29.175949][ T399] netlink_ack+0x35c/0xb30 [ 29.180370][ T399] netlink_rcv_skb+0x267/0x430 [ 29.185146][ T399] [ 29.187478][ T399] Memory state around the buggy address: [ 29.193115][ T399] ffff888111a51000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.201182][ T399] ffff888111a51080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.209249][ T399] >ffff888111a51100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.217318][ T399] ^ [ 29.223995][ T399] ffff888111a51180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.232076][ T399] ffff888111a51200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.240133][ T399] ================================================================== [ 29.248193][ T399] Disabling lock debugging due to kernel taint