Warning: Permanently added '10.128.0.178' (ED25519) to the list of known hosts. 2026/07/27 18:24:27 parsed 1 programs 2026/07/27 18:24:27 serving rpc on tcp://44239 [ 20.388211][ T24] audit: type=1400 audit(1785176667.440:64): 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 [ 20.409177][ T24] audit: type=1400 audit(1785176667.440:65): 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 [ 20.428720][ T24] audit: type=1400 audit(1785176667.440:66): 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 [ 20.979240][ T24] audit: type=1400 audit(1785176668.030:67): 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 [ 20.980270][ T293] cgroup: Unknown subsys name 'net' [ 21.001983][ T24] audit: type=1400 audit(1785176668.030:68): 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 [ 21.029182][ T24] audit: type=1400 audit(1785176668.060:69): 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 [ 21.029355][ T293] cgroup: Unknown subsys name 'devices' [ 21.141232][ T293] cgroup: Unknown subsys name 'hugetlb' [ 21.146806][ T293] cgroup: Unknown subsys name 'rlimit' [ 21.260175][ T24] audit: type=1400 audit(1785176668.320:70): 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 [ 21.283366][ T24] audit: type=1400 audit(1785176668.320:71): 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 [ 21.288483][ T298] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 21.303836][ T24] audit: type=1400 audit(1785176668.320:72): 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 [ 21.332536][ T24] audit: type=1400 audit(1785176668.320:73): 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 [ 21.360075][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 21.702526][ T300] request_module fs-gadgetfs succeeded, but still no fs? [ 21.712667][ T300] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 21.926919][ T327] bridge0: port 1(bridge_slave_0) entered blocking state [ 21.934119][ T327] bridge0: port 1(bridge_slave_0) entered disabled state [ 21.941531][ T327] device bridge_slave_0 entered promiscuous mode [ 21.948339][ T327] bridge0: port 2(bridge_slave_1) entered blocking state [ 21.955558][ T327] bridge0: port 2(bridge_slave_1) entered disabled state [ 21.962868][ T327] device bridge_slave_1 entered promiscuous mode [ 21.996203][ T327] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.003248][ T327] bridge0: port 2(bridge_slave_1) entered forwarding state [ 22.010547][ T327] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.017547][ T327] bridge0: port 1(bridge_slave_0) entered forwarding state [ 22.033369][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 22.040853][ T49] bridge0: port 1(bridge_slave_0) entered disabled state [ 22.047946][ T49] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.056636][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 22.064785][ T49] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.071936][ T49] bridge0: port 1(bridge_slave_0) entered forwarding state [ 22.081280][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 22.089478][ T49] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.096513][ T49] bridge0: port 2(bridge_slave_1) entered forwarding state [ 22.107022][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 22.116543][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 22.128525][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 22.140306][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 22.148212][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 22.155715][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 22.163694][ T327] device veth0_vlan entered promiscuous mode [ 22.174423][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 22.183596][ T327] device veth1_macvtap entered promiscuous mode [ 22.192932][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 22.203405][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/07/27 18:24:29 executed programs: 0 [ 22.756289][ T366] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.763379][ T366] bridge0: port 1(bridge_slave_0) entered disabled state [ 22.770946][ T366] device bridge_slave_0 entered promiscuous mode [ 22.778485][ T366] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.785852][ T366] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.793246][ T366] device bridge_slave_1 entered promiscuous mode [ 22.829578][ T366] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.836614][ T366] bridge0: port 2(bridge_slave_1) entered forwarding state [ 22.843860][ T366] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.850875][ T366] bridge0: port 1(bridge_slave_0) entered forwarding state [ 22.869218][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 22.877598][ T49] bridge0: port 1(bridge_slave_0) entered disabled state [ 22.885295][ T49] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.894061][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 22.902379][ T49] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.909389][ T49] bridge0: port 1(bridge_slave_0) entered forwarding state [ 22.923490][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 22.932037][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 22.940599][ T49] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.947615][ T49] bridge0: port 2(bridge_slave_1) entered forwarding state [ 22.954988][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 22.963392][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 22.971407][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 22.979365][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 22.991152][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 22.999431][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 23.010498][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 23.018349][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 23.026401][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 23.034189][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 23.042204][ T366] device veth0_vlan entered promiscuous mode [ 23.051999][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 23.060298][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 23.069385][ T366] device veth1_macvtap entered promiscuous mode [ 23.077772][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 23.085890][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 23.094254][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 23.103589][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 23.111750][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 23.131415][ T387] ================================================================== [ 23.139518][ T387] BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 [ 23.146172][ T387] Write of size 8 at addr ffff888110b39d50 by task syz.2.17/387 [ 23.153771][ T387] [ 23.156082][ T387] CPU: 1 PID: 387 Comm: syz.2.17 Not tainted syzkaller #0 [ 23.163155][ T387] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 23.173178][ T387] Call Trace: [ 23.176458][ T387] __dump_stack+0x21/0x24 [ 23.180759][ T387] dump_stack_lvl+0x1a7/0x208 [ 23.185404][ T387] ? show_regs_print_info+0x18/0x18 [ 23.190587][ T387] ? thaw_kernel_threads+0x220/0x220 [ 23.195860][ T387] ? debug_smp_processor_id+0x17/0x20 [ 23.201205][ T387] print_address_description+0x7f/0x2c0 [ 23.206717][ T387] ? mutex_lock+0x85/0xf0 [ 23.211014][ T387] kasan_report+0x100/0x140 [ 23.215483][ T387] ? mutex_lock+0x85/0xf0 [ 23.219779][ T387] kasan_check_range+0x249/0x2a0 [ 23.224683][ T387] __kasan_check_write+0x14/0x20 [ 23.229586][ T387] mutex_lock+0x85/0xf0 [ 23.233799][ T387] ? mutex_trylock+0xb0/0xb0 [ 23.238365][ T387] ? l2tp_session_put+0xb2/0x1a0 [ 23.243272][ T387] ? l2tp_session_delete+0x3a9/0x4a0 [ 23.248523][ T387] pppol2tp_release+0x178/0x2b0 [ 23.253350][ T387] sock_close+0xb8/0x200 [ 23.257560][ T387] ? sock_mmap+0xa0/0xa0 [ 23.261784][ T387] __fput+0x2dc/0x730 [ 23.265768][ T387] ____fput+0x15/0x20 [ 23.269788][ T387] task_work_run+0x127/0x190 [ 23.274366][ T387] exit_to_user_mode_loop+0xcb/0xe0 [ 23.279590][ T387] exit_to_user_mode_prepare+0x76/0xa0 [ 23.285031][ T387] syscall_exit_to_user_mode+0x1d/0x40 [ 23.290475][ T387] do_syscall_64+0x3d/0x40 [ 23.294866][ T387] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.300741][ T387] RIP: 0033:0x7fb2bba72e99 [ 23.305129][ T387] 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 [ 23.324732][ T387] RSP: 002b:00007ffe6ac978e8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 23.333125][ T387] RAX: 0000000000000000 RBX: 00007ffe6ac979d0 RCX: 00007fb2bba72e99 [ 23.341076][ T387] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 23.349036][ T387] RBP: 0000000000005a46 R08: 0000000000000001 R09: 0000000000000000 [ 23.356984][ T387] R10: 0000001b32d20000 R11: 0000000000000246 R12: 0000000000000000 [ 23.364964][ T387] R13: 00007fb2bbcfafac R14: 00007fb2bbcfafa8 R15: 00007fb2bbcfafa0 [ 23.372905][ T387] [ 23.375222][ T387] Allocated by task 387: [ 23.379435][ T387] __kasan_kmalloc+0xd4/0x100 [ 23.384085][ T387] __kmalloc+0x19f/0x330 [ 23.388326][ T387] l2tp_session_create+0x39/0xb60 [ 23.393321][ T387] pppol2tp_connect+0xbf5/0x1640 [ 23.398229][ T387] __sys_connect+0x3ce/0x450 [ 23.402789][ T387] __x64_sys_connect+0x7a/0x90 [ 23.407521][ T387] do_syscall_64+0x31/0x40 [ 23.411932][ T387] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.417822][ T387] [ 23.420144][ T387] Freed by task 387: [ 23.424011][ T387] kasan_set_track+0x4a/0x70 [ 23.428701][ T387] kasan_set_free_info+0x23/0x40 [ 23.433637][ T387] ____kasan_slab_free+0x125/0x160 [ 23.438725][ T387] __kasan_slab_free+0x11/0x20 [ 23.443637][ T387] slab_free_freelist_hook+0xc5/0x190 [ 23.448983][ T387] kfree+0xc0/0x270 [ 23.452779][ T387] l2tp_session_put+0xb2/0x1a0 [ 23.457542][ T387] l2tp_session_delete+0x3a9/0x4a0 [ 23.462659][ T387] pppol2tp_release+0x169/0x2b0 [ 23.467500][ T387] sock_close+0xb8/0x200 [ 23.471803][ T387] __fput+0x2dc/0x730 [ 23.475786][ T387] ____fput+0x15/0x20 [ 23.479742][ T387] task_work_run+0x127/0x190 [ 23.484331][ T387] exit_to_user_mode_loop+0xcb/0xe0 [ 23.489497][ T387] exit_to_user_mode_prepare+0x76/0xa0 [ 23.494926][ T387] syscall_exit_to_user_mode+0x1d/0x40 [ 23.500350][ T387] do_syscall_64+0x3d/0x40 [ 23.504731][ T387] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.510588][ T387] [ 23.512890][ T387] The buggy address belongs to the object at ffff888110b39c00 [ 23.512890][ T387] which belongs to the cache kmalloc-512 of size 512 [ 23.526932][ T387] The buggy address is located 336 bytes inside of [ 23.526932][ T387] 512-byte region [ffff888110b39c00, ffff888110b39e00) [ 23.540295][ T387] The buggy address belongs to the page: [ 23.545927][ T387] page:ffffea000442ce00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x110b38 [ 23.556312][ T387] head:ffffea000442ce00 order:2 compound_mapcount:0 compound_pincount:0 [ 23.564616][ T387] flags: 0x4000000000010200(slab|head) [ 23.570066][ T387] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 23.578635][ T387] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 23.587200][ T387] page dumped because: kasan: bad access detected [ 23.593582][ T387] page_owner tracks the page as allocated [ 23.599297][ T387] 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 366, ts 23123907320, free_ts 23050226506 [ 23.619668][ T387] prep_new_page+0x176/0x190 [ 23.624232][ T387] get_page_from_freelist+0x225f/0x23f0 [ 23.629760][ T387] __alloc_pages_nodemask+0x29a/0x640 [ 23.635103][ T387] new_slab+0x84/0x3f0 [ 23.639143][ T387] ___slab_alloc+0x2f8/0x4c0 [ 23.643698][ T387] __slab_alloc+0x63/0xa0 [ 23.647995][ T387] __kmalloc_track_caller+0x1e4/0x310 [ 23.653345][ T387] __alloc_skb+0xdc/0x520 [ 23.657741][ T387] netlink_sendmsg+0x693/0xb70 [ 23.662474][ T387] __sys_sendto+0x467/0x620 [ 23.666947][ T387] __x64_sys_sendto+0xe5/0x100 [ 23.671682][ T387] do_syscall_64+0x31/0x40 [ 23.676080][ T387] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.681950][ T387] page last free stack trace: [ 23.686754][ T387] __free_pages_ok+0x80b/0x830 [ 23.691504][ T387] __free_pages+0xd8/0x390 [ 23.695924][ T387] __free_slab+0xcf/0x190 [ 23.700231][ T387] unfreeze_partials+0x150/0x180 [ 23.705150][ T387] put_cpu_partial+0xc1/0x180 [ 23.709794][ T387] __slab_free+0x2c9/0x3a0 [ 23.714179][ T387] ___cache_free+0x10e/0x130 [ 23.718738][ T387] qlink_free+0x50/0x90 [ 23.722859][ T387] qlist_free_all+0x5f/0xb0 [ 23.727342][ T387] kasan_quarantine_reduce+0x14a/0x160 [ 23.732788][ T387] __kasan_slab_alloc+0x2f/0xe0 [ 23.737633][ T387] slab_post_alloc_hook+0x5d/0x2f0 [ 23.742734][ T387] kmem_cache_alloc+0x15a/0x2d0 [ 23.747562][ T387] __alloc_skb+0x9e/0x520 [ 23.751976][ T387] netlink_ack+0x35c/0xb30 [ 23.756363][ T387] netlink_rcv_skb+0x267/0x430 [ 23.761102][ T387] [ 23.763411][ T387] Memory state around the buggy address: [ 23.769017][ T387] ffff888110b39c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.777050][ T387] ffff888110b39c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.785085][ T387] >ffff888110b39d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.793116][ T387] ^ [ 23.799766][ T387] ffff888110b39d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.807804][ T387] ffff888110b39e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.815840][ T387] ================================================================== [ 23.823885][ T387] Disabling lock debugging due to kernel taint