Warning: Permanently added '10.128.0.94' (ED25519) to the list of known hosts. 2026/06/27 09:51:31 parsed 1 programs 2026/06/27 09:51:31 serving rpc on tcp://46425 [ 25.097289][ T24] audit: type=1400 audit(1782553891.010:64): 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 [ 25.118613][ T24] audit: type=1400 audit(1782553891.010:65): 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 [ 25.138274][ T24] audit: type=1400 audit(1782553891.010:66): 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 [ 26.037239][ T24] audit: type=1400 audit(1782553891.950:67): avc: denied { mounton } for pid=294 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 [ 26.040658][ T294] cgroup: Unknown subsys name 'net' [ 26.060009][ T24] audit: type=1400 audit(1782553891.950:68): avc: denied { mount } for pid=294 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 [ 26.087499][ T24] audit: type=1400 audit(1782553891.980:69): avc: denied { unmount } for pid=294 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 26.088056][ T294] cgroup: Unknown subsys name 'devices' [ 26.256853][ T294] cgroup: Unknown subsys name 'hugetlb' [ 26.262515][ T294] cgroup: Unknown subsys name 'rlimit' [ 26.441352][ T24] audit: type=1400 audit(1782553892.350:70): avc: denied { setattr } for pid=294 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 [ 26.464737][ T24] audit: type=1400 audit(1782553892.350:71): avc: denied { create } for pid=294 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 [ 26.481405][ T297] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 26.485811][ T24] audit: type=1400 audit(1782553892.350:72): avc: denied { write } for pid=294 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 26.514138][ T24] audit: type=1400 audit(1782553892.350:73): avc: denied { read } for pid=294 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 26.539942][ T294] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 26.956744][ T299] request_module fs-gadgetfs succeeded, but still no fs? [ 26.967788][ T299] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 27.544971][ T341] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.552066][ T341] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.559890][ T341] device bridge_slave_0 entered promiscuous mode [ 27.567002][ T341] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.574062][ T341] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.581708][ T341] device bridge_slave_1 entered promiscuous mode [ 27.624771][ T341] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.631905][ T341] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.639258][ T341] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.646315][ T341] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.663619][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.671510][ T48] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.678837][ T48] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.689254][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.697620][ T48] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.704662][ T48] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.713566][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.722609][ T48] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.729708][ T48] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.741378][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.750761][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.764646][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.776020][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.784108][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.791795][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.800180][ T341] device veth0_vlan entered promiscuous mode [ 27.809991][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.819072][ T341] device veth1_macvtap entered promiscuous mode [ 27.828720][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.838543][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/06/27 09:51:34 executed programs: 0 [ 28.263782][ T364] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.271132][ T364] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.279110][ T364] device bridge_slave_0 entered promiscuous mode [ 28.286233][ T364] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.293288][ T364] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.300766][ T364] device bridge_slave_1 entered promiscuous mode [ 28.364712][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 28.372404][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.381160][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 28.390354][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.398603][ T48] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.405650][ T48] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.413221][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 28.422494][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 28.430864][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.439094][ T48] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.446176][ T48] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.475729][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 28.483818][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 28.496460][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 28.515665][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 28.523760][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 28.531387][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 28.539790][ T364] device veth0_vlan entered promiscuous mode [ 28.549970][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 28.560106][ T364] device veth1_macvtap entered promiscuous mode [ 28.569778][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.580262][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 28.604230][ T403] ================================================================== [ 28.612370][ T403] BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 [ 28.619063][ T403] Write of size 8 at addr ffff88810fddf150 by task syz.2.17/403 [ 28.626701][ T403] [ 28.629048][ T403] CPU: 1 PID: 403 Comm: syz.2.17 Not tainted syzkaller #0 [ 28.636161][ T403] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 28.646223][ T403] Call Trace: [ 28.649527][ T403] __dump_stack+0x21/0x24 [ 28.653863][ T403] dump_stack_lvl+0x1a7/0x208 [ 28.658549][ T403] ? show_regs_print_info+0x18/0x18 [ 28.663751][ T403] ? thaw_kernel_threads+0x220/0x220 [ 28.669040][ T403] ? debug_smp_processor_id+0x17/0x20 [ 28.674417][ T403] print_address_description+0x7f/0x2c0 [ 28.679968][ T403] ? mutex_lock+0x85/0xf0 [ 28.684300][ T403] kasan_report+0x100/0x140 [ 28.688816][ T403] ? mutex_lock+0x85/0xf0 [ 28.693151][ T403] kasan_check_range+0x249/0x2a0 [ 28.698093][ T403] __kasan_check_write+0x14/0x20 [ 28.703030][ T403] mutex_lock+0x85/0xf0 [ 28.707191][ T403] ? mutex_trylock+0xb0/0xb0 [ 28.711790][ T403] ? l2tp_session_put+0xb2/0x1a0 [ 28.716739][ T403] ? l2tp_session_delete+0x3a9/0x4a0 [ 28.722035][ T403] pppol2tp_release+0x178/0x2b0 [ 28.726889][ T403] sock_close+0xb8/0x200 [ 28.731158][ T403] ? sock_mmap+0xa0/0xa0 [ 28.735407][ T403] __fput+0x2dc/0x730 [ 28.739398][ T403] ____fput+0x15/0x20 [ 28.743383][ T403] task_work_run+0x127/0x190 [ 28.747980][ T403] exit_to_user_mode_loop+0xcb/0xe0 [ 28.753185][ T403] exit_to_user_mode_prepare+0x76/0xa0 [ 28.758649][ T403] syscall_exit_to_user_mode+0x1d/0x40 [ 28.764113][ T403] do_syscall_64+0x3d/0x40 [ 28.768535][ T403] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.774433][ T403] RIP: 0033:0x7fbc7ce6fe59 [ 28.778854][ T403] 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 [ 28.798464][ T403] RSP: 002b:00007ffe0dd04068 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 28.806886][ T403] RAX: 0000000000000000 RBX: 00007ffe0dd04150 RCX: 00007fbc7ce6fe59 [ 28.814863][ T403] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 28.822846][ T403] RBP: 0000000000006f97 R08: 0000000000000001 R09: 0000000000000000 [ 28.830827][ T403] R10: 0000001b32b20000 R11: 0000000000000246 R12: 0000000000000000 [ 28.838805][ T403] R13: 00007fbc7d0e8fac R14: 00007fbc7d0e8fa8 R15: 00007fbc7d0e8fa0 [ 28.846785][ T403] [ 28.849123][ T403] Allocated by task 403: [ 28.853378][ T403] __kasan_kmalloc+0xd4/0x100 [ 28.858064][ T403] __kmalloc+0x19f/0x330 [ 28.862311][ T403] l2tp_session_create+0x39/0xb60 [ 28.867343][ T403] pppol2tp_connect+0xbf5/0x1640 [ 28.872307][ T403] __sys_connect+0x3ce/0x450 [ 28.876904][ T403] __x64_sys_connect+0x7a/0x90 [ 28.881696][ T403] do_syscall_64+0x31/0x40 [ 28.886119][ T403] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.892013][ T403] [ 28.894347][ T403] Freed by task 403: [ 28.898251][ T403] kasan_set_track+0x4a/0x70 [ 28.902848][ T403] kasan_set_free_info+0x23/0x40 [ 28.907788][ T403] ____kasan_slab_free+0x125/0x160 [ 28.912907][ T403] __kasan_slab_free+0x11/0x20 [ 28.917782][ T403] slab_free_freelist_hook+0xc5/0x190 [ 28.923165][ T403] kfree+0xc0/0x270 [ 28.926982][ T403] l2tp_session_put+0xb2/0x1a0 [ 28.931777][ T403] l2tp_session_delete+0x3a9/0x4a0 [ 28.936917][ T403] pppol2tp_release+0x169/0x2b0 [ 28.941772][ T403] sock_close+0xb8/0x200 [ 28.946018][ T403] __fput+0x2dc/0x730 [ 28.950003][ T403] ____fput+0x15/0x20 [ 28.953992][ T403] task_work_run+0x127/0x190 [ 28.958588][ T403] exit_to_user_mode_loop+0xcb/0xe0 [ 28.963789][ T403] exit_to_user_mode_prepare+0x76/0xa0 [ 28.969255][ T403] syscall_exit_to_user_mode+0x1d/0x40 [ 28.974715][ T403] do_syscall_64+0x3d/0x40 [ 28.979133][ T403] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.985028][ T403] [ 28.987363][ T403] The buggy address belongs to the object at ffff88810fddf000 [ 28.987363][ T403] which belongs to the cache kmalloc-512 of size 512 [ 29.001421][ T403] The buggy address is located 336 bytes inside of [ 29.001421][ T403] 512-byte region [ffff88810fddf000, ffff88810fddf200) [ 29.014700][ T403] The buggy address belongs to the page: [ 29.020363][ T403] page:ffffea00043f7700 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10fddc [ 29.030606][ T403] head:ffffea00043f7700 order:2 compound_mapcount:0 compound_pincount:0 [ 29.038948][ T403] flags: 0x4000000000010200(slab|head) [ 29.044420][ T403] raw: 4000000000010200 ffffea0004469a00 0000000200000002 ffff888100043080 [ 29.053010][ T403] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 29.061598][ T403] page dumped because: kasan: bad access detected [ 29.068018][ T403] page_owner tracks the page as allocated [ 29.073752][ T403] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 96, ts 5755136574, free_ts 0 [ 29.091723][ T403] prep_new_page+0x176/0x190 [ 29.096322][ T403] get_page_from_freelist+0x225f/0x23f0 [ 29.101870][ T403] __alloc_pages_nodemask+0x29a/0x640 [ 29.107244][ T403] new_slab+0x84/0x3f0 [ 29.111321][ T403] ___slab_alloc+0x2f8/0x4c0 [ 29.115919][ T403] __slab_alloc+0x63/0xa0 [ 29.120252][ T403] __kmalloc_track_caller+0x1e4/0x310 [ 29.125648][ T403] __alloc_skb+0xdc/0x520 [ 29.129986][ T403] alloc_uevent_skb+0x85/0x240 [ 29.134754][ T403] kobject_uevent_net_broadcast+0x335/0x5a0 [ 29.140657][ T403] kobject_uevent_env+0x52b/0x700 [ 29.145684][ T403] kobject_synth_uevent+0x452/0x940 [ 29.150885][ T403] store_uevent+0x16/0x30 [ 29.155223][ T403] module_attr_store+0x5f/0x80 [ 29.159992][ T403] sysfs_kf_write+0x129/0x150 [ 29.164670][ T403] kernfs_fop_write_iter+0x2bd/0x400 [ 29.169954][ T403] page_owner free stack trace missing [ 29.175324][ T403] [ 29.177653][ T403] Memory state around the buggy address: [ 29.183439][ T403] ffff88810fddf000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.191522][ T403] ffff88810fddf080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.199601][ T403] >ffff88810fddf100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.207677][ T403] ^ [ 29.214355][ T403] ffff88810fddf180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.222423][ T403] ffff88810fddf200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.230482][ T403] ================================================================== [ 29.238541][ T403] Disabling lock debugging due to kernel taint