Warning: Permanently added '10.128.1.133' (ED25519) to the list of known hosts. 2026/06/11 04:45:23 parsed 1 programs [ 22.912654][ T28] audit: type=1400 audit(1781153123.062:64): avc: denied { node_bind } for pid=294 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 22.933431][ T28] audit: type=1400 audit(1781153123.062:65): avc: denied { module_request } for pid=294 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 [ 24.040886][ T28] audit: type=1400 audit(1781153124.192:66): avc: denied { mounton } for pid=302 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 [ 24.044140][ T302] cgroup: Unknown subsys name 'net' [ 24.068826][ T28] audit: type=1400 audit(1781153124.192:67): avc: denied { mount } for pid=302 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 [ 24.091217][ T302] cgroup: Unknown subsys name 'devices' [ 24.091344][ T28] audit: type=1400 audit(1781153124.232:68): avc: denied { unmount } for pid=302 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 24.208559][ T302] cgroup: Unknown subsys name 'hugetlb' [ 24.214182][ T302] cgroup: Unknown subsys name 'rlimit' [ 24.336929][ T28] audit: type=1400 audit(1781153124.492:69): avc: denied { setattr } for pid=302 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=258 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 24.360171][ T28] audit: type=1400 audit(1781153124.492:70): avc: denied { create } for pid=302 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.380614][ T28] audit: type=1400 audit(1781153124.492:71): avc: denied { write } for pid=302 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.400991][ T28] audit: type=1400 audit(1781153124.492:72): avc: denied { read } for pid=302 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 [ 24.421377][ T28] audit: type=1400 audit(1781153124.492:73): avc: denied { mounton } for pid=302 comm="syz-executor" path="/proc/sys/fs/binfmt_misc" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=dir permissive=1 [ 24.431192][ T305] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 24.481249][ T302] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 25.139930][ T307] request_module fs-gadgetfs succeeded, but still no fs? [ 25.268941][ T312] syz-executor (312) used greatest stack depth: 22112 bytes left [ 25.747865][ T346] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.754961][ T346] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.762515][ T346] device bridge_slave_0 entered promiscuous mode [ 25.769508][ T346] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.776736][ T346] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.784136][ T346] device bridge_slave_1 entered promiscuous mode [ 25.829797][ T346] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.836907][ T346] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.844193][ T346] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.851274][ T346] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.871901][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.879585][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.887280][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.896333][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.904654][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.911701][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.921034][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.929266][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.936296][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.948885][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.958665][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.973382][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.984921][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.993330][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.001188][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.009622][ T346] device veth0_vlan entered promiscuous mode [ 26.020183][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.033833][ T346] device veth1_macvtap entered promiscuous mode [ 26.043665][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.053995][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.091247][ T346] syz-executor (346) used greatest stack depth: 21952 bytes left 2026/06/11 04:45:26 executed programs: 0 [ 26.498672][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.505729][ T370] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.513449][ T370] device bridge_slave_0 entered promiscuous mode [ 26.521638][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.528760][ T370] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.536440][ T370] device bridge_slave_1 entered promiscuous mode [ 26.583084][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.590155][ T370] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.597463][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.604514][ T370] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.624308][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.632247][ T43] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.639623][ T43] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.650132][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.658405][ T43] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.665441][ T43] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.674701][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.683086][ T43] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.690174][ T43] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.702863][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.712288][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.726356][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.738125][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.746219][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.754017][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.762789][ T370] device veth0_vlan entered promiscuous mode [ 26.779342][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.788618][ T370] device veth1_macvtap entered promiscuous mode [ 26.798336][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.813498][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.844403][ T374] ================================================================== [ 26.852520][ T374] BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 [ 26.859304][ T374] Write of size 8 at addr ffff888120578150 by task syz.2.17/374 [ 26.867013][ T374] [ 26.869334][ T374] CPU: 1 PID: 374 Comm: syz.2.17 Not tainted syzkaller #0 [ 26.876457][ T374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 26.886519][ T374] Call Trace: [ 26.889797][ T374] [ 26.892744][ T374] __dump_stack+0x21/0x24 [ 26.897080][ T374] dump_stack_lvl+0x110/0x170 [ 26.901788][ T374] ? __cfi_dump_stack_lvl+0x8/0x8 [ 26.906833][ T374] ? mutex_lock+0x86/0x1b0 [ 26.911254][ T374] print_address_description+0x71/0x200 [ 26.916797][ T374] print_report+0x4a/0x60 [ 26.921138][ T374] kasan_report+0x122/0x150 [ 26.925652][ T374] ? mutex_lock+0x86/0x1b0 [ 26.930096][ T374] kasan_check_range+0x249/0x2a0 [ 26.935142][ T374] __kasan_check_write+0x14/0x20 [ 26.940077][ T374] mutex_lock+0x86/0x1b0 [ 26.944321][ T374] ? __cfi_mutex_lock+0x10/0x10 [ 26.949206][ T374] ? l2tp_session_put+0xaf/0x1a0 [ 26.954144][ T374] ? l2tp_session_delete+0x3f0/0x4e0 [ 26.959423][ T374] pppol2tp_release+0x194/0x2d0 [ 26.964272][ T374] sock_close+0xf1/0x290 [ 26.968518][ T374] ? __cfi_sock_close+0x10/0x10 [ 26.973377][ T374] __fput+0x1fc/0x8f0 [ 26.977358][ T374] ____fput+0x15/0x20 [ 26.981339][ T374] task_work_run+0x1e1/0x250 [ 26.985931][ T374] ? __cfi_task_work_run+0x10/0x10 [ 26.991047][ T374] ? __cfi___close_range+0x10/0x10 [ 26.996180][ T374] exit_to_user_mode_loop+0x9b/0xb0 [ 27.001408][ T374] exit_to_user_mode_prepare+0x87/0xd0 [ 27.006877][ T374] syscall_exit_to_user_mode+0x1a/0x30 [ 27.012336][ T374] do_syscall_64+0x58/0xa0 [ 27.016752][ T374] ? clear_bhb_loop+0x30/0x80 [ 27.021435][ T374] ? clear_bhb_loop+0x30/0x80 [ 27.026111][ T374] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 27.032004][ T374] RIP: 0033:0x7f8de9f9ce59 [ 27.036436][ 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 [ 27.056050][ T374] RSP: 002b:00007ffe1b8a2e18 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 27.064567][ T374] RAX: 0000000000000000 RBX: 00007ffe1b8a2f00 RCX: 00007f8de9f9ce59 [ 27.072540][ T374] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 27.080513][ T374] RBP: 00000000000068d4 R08: 0000000000000001 R09: 0000000000000000 [ 27.088484][ T374] R10: 0000001b33120000 R11: 0000000000000246 R12: 0000000000000000 [ 27.096463][ T374] R13: 00007f8dea215fac R14: 00007f8dea215fa8 R15: 00007f8dea215fa0 [ 27.104600][ T374] [ 27.107626][ T374] [ 27.109947][ T374] Allocated by task 374: [ 27.114183][ T374] kasan_set_track+0x4b/0x70 [ 27.118773][ T374] kasan_save_alloc_info+0x25/0x30 [ 27.123883][ T374] __kasan_kmalloc+0x95/0xb0 [ 27.128485][ T374] __kmalloc+0xb1/0x1e0 [ 27.132634][ T374] l2tp_session_create+0x38/0xbe0 [ 27.137659][ T374] pppol2tp_connect+0xbef/0x1620 [ 27.142608][ T374] __sys_connect+0x3da/0x460 [ 27.147210][ T374] __x64_sys_connect+0x7a/0x90 [ 27.152174][ T374] x64_sys_call+0x88d/0x9a0 [ 27.156685][ T374] do_syscall_64+0x4c/0xa0 [ 27.161101][ T374] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 27.166996][ T374] [ 27.169312][ T374] Freed by task 374: [ 27.173196][ T374] kasan_set_track+0x4b/0x70 [ 27.177785][ T374] kasan_save_free_info+0x31/0x50 [ 27.182806][ T374] ____kasan_slab_free+0x132/0x180 [ 27.187915][ T374] __kasan_slab_free+0x11/0x20 [ 27.192674][ T374] slab_free_freelist_hook+0xc2/0x190 [ 27.198042][ T374] __kmem_cache_free+0xb7/0x1b0 [ 27.202895][ T374] kfree+0x6f/0xf0 [ 27.206609][ T374] l2tp_session_put+0xaf/0x1a0 [ 27.211366][ T374] l2tp_session_delete+0x3f0/0x4e0 [ 27.216478][ T374] pppol2tp_release+0x185/0x2d0 [ 27.221330][ T374] sock_close+0xf1/0x290 [ 27.225670][ T374] __fput+0x1fc/0x8f0 [ 27.229674][ T374] ____fput+0x15/0x20 [ 27.233700][ T374] task_work_run+0x1e1/0x250 [ 27.238299][ T374] exit_to_user_mode_loop+0x9b/0xb0 [ 27.243523][ T374] exit_to_user_mode_prepare+0x87/0xd0 [ 27.249002][ T374] syscall_exit_to_user_mode+0x1a/0x30 [ 27.254484][ T374] do_syscall_64+0x58/0xa0 [ 27.258902][ T374] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 27.264797][ T374] [ 27.267118][ T374] The buggy address belongs to the object at ffff888120578000 [ 27.267118][ T374] which belongs to the cache kmalloc-512 of size 512 [ 27.281186][ T374] The buggy address is located 336 bytes inside of [ 27.281186][ T374] 512-byte region [ffff888120578000, ffff888120578200) [ 27.294546][ T374] [ 27.296878][ T374] The buggy address belongs to the physical page: [ 27.303304][ T374] page:ffffea0004815e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x120578 [ 27.313552][ T374] head:ffffea0004815e00 order:2 compound_mapcount:0 compound_pincount:0 [ 27.321870][ T374] flags: 0x4000000000010200(slab|head|zone=1) [ 27.327971][ T374] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 27.336561][ T374] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 27.345224][ T374] page dumped because: kasan: bad access detected [ 27.351641][ T374] page_owner tracks the page as allocated [ 27.357350][ T374] 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 8, tgid 8 (kworker/u4:0), ts 26828971036, free_ts 26219492636 [ 27.379585][ T374] post_alloc_hook+0x1f5/0x210 [ 27.384359][ T374] prep_new_page+0x1c/0x110 [ 27.388863][ T374] get_page_from_freelist+0x2d12/0x2d80 [ 27.394503][ T374] __alloc_pages+0x1fa/0x610 [ 27.399114][ T374] alloc_slab_page+0x6e/0xf0 [ 27.403704][ T374] new_slab+0x98/0x3d0 [ 27.407790][ T374] ___slab_alloc+0x6bd/0xb20 [ 27.412400][ T374] __slab_alloc+0x5e/0xa0 [ 27.416733][ T374] __kmem_cache_alloc_node+0x203/0x2c0 [ 27.422215][ T374] __kmalloc_node_track_caller+0xa0/0x1e0 [ 27.427930][ T374] __alloc_skb+0x236/0x4b0 [ 27.432346][ T374] inet6_netconf_notify_devconf+0x107/0x1c0 [ 27.438244][ T374] addrconf_ifdown+0x1643/0x1950 [ 27.443201][ T374] addrconf_notify+0x39f/0xe40 [ 27.447965][ T374] raw_notifier_call_chain+0xa1/0x110 [ 27.453349][ T374] unregister_netdevice_many+0x102c/0x18e0 [ 27.459248][ T374] page last free stack trace: [ 27.463916][ T374] free_unref_page_prepare+0x7f8/0x800 [ 27.469376][ T374] free_unref_page+0x95/0x540 [ 27.474074][ T374] __free_pages+0x67/0x100 [ 27.478493][ T374] free_pages+0x82/0x90 [ 27.482653][ T374] kasan_depopulate_vmalloc_pte+0x6b/0x90 [ 27.488371][ T374] __apply_to_page_range+0x8de/0xc80 [ 27.493676][ T374] apply_to_existing_page_range+0x38/0x50 [ 27.499396][ T374] kasan_release_vmalloc+0x97/0xb0 [ 27.504508][ T374] __purge_vmap_area_lazy+0xf15/0x1870 [ 27.509963][ T374] drain_vmap_area_work+0x3e/0xd0 [ 27.514994][ T374] process_one_work+0x71f/0xc40 [ 27.519852][ T374] worker_thread+0xa29/0x11e0 [ 27.524523][ T374] kthread+0x281/0x320 [ 27.528585][ T374] ret_from_fork+0x1f/0x30 [ 27.532998][ T374] [ 27.535313][ T374] Memory state around the buggy address: [ 27.541025][ T374] ffff888120578000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.549098][ T374] ffff888120578080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.557156][ T374] >ffff888120578100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.565206][ T374] ^ [ 27.571870][ T374] ffff888120578180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.579948][ T374] ffff888120578200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.588001][ T374] ================================================================== [ 27.599637][ T374] Disabling lock debugging due to kernel taint