rocess permissive=1 [ 10.629379][ T24] audit: type=1400 audit(1782723505.590:63): avc: denied { siginh } for pid=214 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.0.22' (ED25519) to the list of known hosts. 2026/06/29 08:58:35 parsed 1 programs 2026/06/29 08:58:35 serving rpc on tcp://34709 [ 20.028527][ T24] audit: type=1400 audit(1782723515.010:64): 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 [ 20.033329][ T24] audit: type=1400 audit(1782723515.010:65): 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 [ 20.038589][ T24] audit: type=1400 audit(1782723515.010:66): 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 [ 20.603379][ T24] audit: type=1400 audit(1782723515.580:67): 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 [ 20.604425][ T294] cgroup: Unknown subsys name 'net' [ 20.626045][ T24] audit: type=1400 audit(1782723515.590:68): 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 [ 20.653251][ T24] audit: type=1400 audit(1782723515.610:69): 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 [ 20.653413][ T294] cgroup: Unknown subsys name 'devices' [ 20.765031][ T294] cgroup: Unknown subsys name 'hugetlb' [ 20.770633][ T294] cgroup: Unknown subsys name 'rlimit' [ 20.894136][ T24] audit: type=1400 audit(1782723515.880:70): 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 [ 20.917596][ T24] audit: type=1400 audit(1782723515.880:71): 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 [ 20.922911][ T297] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 20.938089][ T24] audit: type=1400 audit(1782723515.880:72): 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 [ 20.966928][ T24] audit: type=1400 audit(1782723515.880:73): 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 [ 20.992738][ T294] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 21.373945][ T299] request_module fs-gadgetfs succeeded, but still no fs? [ 21.384349][ T299] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 21.543220][ T320] bridge0: port 1(bridge_slave_0) entered blocking state [ 21.550354][ T320] bridge0: port 1(bridge_slave_0) entered disabled state [ 21.558084][ T320] device bridge_slave_0 entered promiscuous mode [ 21.566245][ T320] bridge0: port 2(bridge_slave_1) entered blocking state [ 21.573249][ T320] bridge0: port 2(bridge_slave_1) entered disabled state [ 21.580554][ T320] device bridge_slave_1 entered promiscuous mode [ 21.612705][ T320] bridge0: port 2(bridge_slave_1) entered blocking state [ 21.619745][ T320] bridge0: port 2(bridge_slave_1) entered forwarding state [ 21.627015][ T320] bridge0: port 1(bridge_slave_0) entered blocking state [ 21.634031][ T320] bridge0: port 1(bridge_slave_0) entered forwarding state [ 21.648947][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 21.656489][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 21.664017][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 21.674022][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 21.682149][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 21.689181][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 21.697840][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 21.706151][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 21.713168][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 21.724926][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 21.734167][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 21.747737][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 21.758235][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 21.766483][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 21.773931][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 21.783472][ T320] device veth0_vlan entered promiscuous mode [ 21.792651][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 21.802818][ T320] device veth1_macvtap entered promiscuous mode [ 21.811354][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 21.820849][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/06/29 08:58:37 executed programs: 0 [ 22.429056][ T369] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.436284][ T369] bridge0: port 1(bridge_slave_0) entered disabled state [ 22.443502][ T369] device bridge_slave_0 entered promiscuous mode [ 22.450362][ T369] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.457637][ T369] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.465037][ T369] device bridge_slave_1 entered promiscuous mode [ 22.499473][ T369] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.506513][ T369] bridge0: port 2(bridge_slave_1) entered forwarding state [ 22.524182][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.531648][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 22.539061][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 22.547699][ T9] device bridge_slave_1 left promiscuous mode [ 22.554157][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.561467][ T9] device bridge_slave_0 left promiscuous mode [ 22.567678][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 22.575331][ T9] device veth1_macvtap left promiscuous mode [ 22.581336][ T9] device veth0_vlan left promiscuous mode [ 22.687338][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 22.695633][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 22.703797][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.710802][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 22.719159][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 22.727453][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.734501][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 22.746137][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 22.754877][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 22.767179][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 22.777926][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 22.786196][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 22.793645][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 22.801506][ T369] device veth0_vlan entered promiscuous mode [ 22.810473][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 22.819420][ T369] device veth1_macvtap entered promiscuous mode [ 22.827943][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 22.837436][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 22.861040][ T374] ================================================================== [ 22.869139][ T374] BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 [ 22.875787][ T374] Write of size 8 at addr ffff88810f946150 by task syz.2.17/374 [ 22.883379][ T374] [ 22.885697][ T374] CPU: 0 PID: 374 Comm: syz.2.17 Not tainted syzkaller #0 [ 22.892774][ T374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 22.902801][ T374] Call Trace: [ 22.906065][ T374] __dump_stack+0x21/0x24 [ 22.910365][ T374] dump_stack_lvl+0x1a7/0x208 [ 22.915016][ T374] ? show_regs_print_info+0x18/0x18 [ 22.920186][ T374] ? thaw_kernel_threads+0x220/0x220 [ 22.925447][ T374] ? debug_smp_processor_id+0x17/0x20 [ 22.930791][ T374] print_address_description+0x7f/0x2c0 [ 22.936312][ T374] ? mutex_lock+0x85/0xf0 [ 22.940615][ T374] kasan_report+0x100/0x140 [ 22.945179][ T374] ? mutex_lock+0x85/0xf0 [ 22.949491][ T374] kasan_check_range+0x249/0x2a0 [ 22.954423][ T374] __kasan_check_write+0x14/0x20 [ 22.959340][ T374] mutex_lock+0x85/0xf0 [ 22.963463][ T374] ? mutex_trylock+0xb0/0xb0 [ 22.968058][ T374] ? l2tp_session_put+0xb2/0x1a0 [ 22.972967][ T374] ? l2tp_session_delete+0x3a9/0x4a0 [ 22.978228][ T374] pppol2tp_release+0x178/0x2b0 [ 22.983056][ T374] sock_close+0xb8/0x200 [ 22.987267][ T374] ? sock_mmap+0xa0/0xa0 [ 22.991491][ T374] __fput+0x2dc/0x730 [ 22.995446][ T374] ____fput+0x15/0x20 [ 22.999398][ T374] task_work_run+0x127/0x190 [ 23.003959][ T374] exit_to_user_mode_loop+0xcb/0xe0 [ 23.009129][ T374] exit_to_user_mode_prepare+0x76/0xa0 [ 23.014560][ T374] syscall_exit_to_user_mode+0x1d/0x40 [ 23.019985][ T374] do_syscall_64+0x3d/0x40 [ 23.024370][ T374] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.030232][ T374] RIP: 0033:0x7f1432a76e59 [ 23.034618][ T374] 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 [ 23.054198][ T374] RSP: 002b:00007ffed7367068 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 23.062584][ T374] RAX: 0000000000000000 RBX: 00007ffed7367150 RCX: 00007f1432a76e59 [ 23.070527][ T374] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 23.078476][ T374] RBP: 0000000000005933 R08: 0000000000000001 R09: 0000000000000000 [ 23.086423][ T374] R10: 0000001b33020000 R11: 0000000000000246 R12: 0000000000000000 [ 23.094369][ T374] R13: 00007f1432ceffac R14: 00007f1432ceffa8 R15: 00007f1432ceffa0 [ 23.102314][ T374] [ 23.104614][ T374] Allocated by task 374: [ 23.108830][ T374] __kasan_kmalloc+0xd4/0x100 [ 23.113478][ T374] __kmalloc+0x19f/0x330 [ 23.117698][ T374] l2tp_session_create+0x39/0xb60 [ 23.122688][ T374] pppol2tp_connect+0xbf5/0x1640 [ 23.127598][ T374] __sys_connect+0x3ce/0x450 [ 23.132156][ T374] __x64_sys_connect+0x7a/0x90 [ 23.136893][ T374] do_syscall_64+0x31/0x40 [ 23.141279][ T374] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.147136][ T374] [ 23.149437][ T374] Freed by task 374: [ 23.153309][ T374] kasan_set_track+0x4a/0x70 [ 23.157892][ T374] kasan_set_free_info+0x23/0x40 [ 23.162799][ T374] ____kasan_slab_free+0x125/0x160 [ 23.167889][ T374] __kasan_slab_free+0x11/0x20 [ 23.172622][ T374] slab_free_freelist_hook+0xc5/0x190 [ 23.177965][ T374] kfree+0xc0/0x270 [ 23.181747][ T374] l2tp_session_put+0xb2/0x1a0 [ 23.186481][ T374] l2tp_session_delete+0x3a9/0x4a0 [ 23.191557][ T374] pppol2tp_release+0x169/0x2b0 [ 23.196379][ T374] sock_close+0xb8/0x200 [ 23.200591][ T374] __fput+0x2dc/0x730 [ 23.204542][ T374] ____fput+0x15/0x20 [ 23.208495][ T374] task_work_run+0x127/0x190 [ 23.213055][ T374] exit_to_user_mode_loop+0xcb/0xe0 [ 23.218224][ T374] exit_to_user_mode_prepare+0x76/0xa0 [ 23.223653][ T374] syscall_exit_to_user_mode+0x1d/0x40 [ 23.229078][ T374] do_syscall_64+0x3d/0x40 [ 23.233559][ T374] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.239421][ T374] [ 23.241726][ T374] The buggy address belongs to the object at ffff88810f946000 [ 23.241726][ T374] which belongs to the cache kmalloc-512 of size 512 [ 23.255751][ T374] The buggy address is located 336 bytes inside of [ 23.255751][ T374] 512-byte region [ffff88810f946000, ffff88810f946200) [ 23.269023][ T374] The buggy address belongs to the page: [ 23.274676][ T374] page:ffffea00043e5100 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10f944 [ 23.284879][ T374] head:ffffea00043e5100 order:2 compound_mapcount:0 compound_pincount:0 [ 23.293184][ T374] flags: 0x4000000000010200(slab|head) [ 23.298629][ T374] raw: 4000000000010200 ffffea0004444600 0000000400000004 ffff888100043080 [ 23.307185][ T374] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 23.315735][ T374] page dumped because: kasan: bad access detected [ 23.322114][ T374] page_owner tracks the page as allocated [ 23.327815][ T374] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 95, ts 3753388891, free_ts 0 [ 23.345761][ T374] prep_new_page+0x176/0x190 [ 23.350329][ T374] get_page_from_freelist+0x225f/0x23f0 [ 23.355848][ T374] __alloc_pages_nodemask+0x29a/0x640 [ 23.361189][ T374] new_slab+0x84/0x3f0 [ 23.365237][ T374] ___slab_alloc+0x2f8/0x4c0 [ 23.369799][ T374] __slab_alloc+0x63/0xa0 [ 23.374099][ T374] __kmalloc_track_caller+0x1e4/0x310 [ 23.379444][ T374] __alloc_skb+0xdc/0x520 [ 23.383754][ T374] alloc_uevent_skb+0x85/0x240 [ 23.388586][ T374] kobject_uevent_net_broadcast+0x335/0x5a0 [ 23.394455][ T374] kobject_uevent_env+0x52b/0x700 [ 23.399463][ T374] kobject_synth_uevent+0x452/0x940 [ 23.404656][ T374] store_uevent+0x16/0x30 [ 23.408960][ T374] module_attr_store+0x5f/0x80 [ 23.413965][ T374] sysfs_kf_write+0x129/0x150 [ 23.418629][ T374] kernfs_fop_write_iter+0x2bd/0x400 [ 23.423880][ T374] page_owner free stack trace missing [ 23.429219][ T374] [ 23.431517][ T374] Memory state around the buggy address: [ 23.437121][ T374] ffff88810f946000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.445157][ T374] ffff88810f946080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.453198][ T374] >ffff88810f946100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.461232][ T374] ^ [ 23.467886][ T374] ffff88810f946180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.475930][ T374] ffff88810f946200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.483973][ T374] ================================================================== [ 23.492008][ T374] Disabling lock debugging due to kernel taint