rocess permissive=1 [ 14.482831][ T28] audit: type=1400 audit(1781179477.171:63): avc: denied { siginh } for pid=225 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.47' (ED25519) to the list of known hosts. 2026/06/11 12:04:47 parsed 1 programs [ 24.655091][ T28] audit: type=1400 audit(1781179487.351:64): avc: denied { node_bind } for pid=296 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 24.675940][ T28] audit: type=1400 audit(1781179487.351:65): avc: denied { module_request } for pid=296 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 [ 25.794801][ T28] audit: type=1400 audit(1781179488.491:66): avc: denied { mounton } for pid=303 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 [ 25.798153][ T303] cgroup: Unknown subsys name 'net' [ 25.817477][ T28] audit: type=1400 audit(1781179488.491:67): avc: denied { mount } for pid=303 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 [ 25.844840][ T28] audit: type=1400 audit(1781179488.521:68): avc: denied { unmount } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 25.845264][ T303] cgroup: Unknown subsys name 'devices' [ 26.001088][ T303] cgroup: Unknown subsys name 'hugetlb' [ 26.006755][ T303] cgroup: Unknown subsys name 'rlimit' [ 26.149622][ T28] audit: type=1400 audit(1781179488.851:69): avc: denied { setattr } for pid=303 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 [ 26.172847][ T28] audit: type=1400 audit(1781179488.851:70): avc: denied { create } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 26.193574][ T28] audit: type=1400 audit(1781179488.851:71): avc: denied { write } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 26.214505][ T28] audit: type=1400 audit(1781179488.851:72): avc: denied { read } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 26.222299][ T306] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). Setting up swapspace version 1, size = 127995904 bytes [ 26.234887][ T28] audit: type=1400 audit(1781179488.851:73): avc: denied { mounton } for pid=303 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 [ 26.302105][ T303] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 26.972272][ T309] request_module fs-gadgetfs succeeded, but still no fs? [ 27.051543][ T309] syz-executor (309) used greatest stack depth: 22112 bytes left [ 27.423462][ T333] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.430775][ T333] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.438224][ T333] device bridge_slave_0 entered promiscuous mode [ 27.446204][ T333] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.453552][ T333] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.461074][ T333] device bridge_slave_1 entered promiscuous mode [ 27.512360][ T333] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.519454][ T333] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.526742][ T333] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.533824][ T333] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.554699][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.562423][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.570110][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.579582][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.587795][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.594891][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.603939][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.612224][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.619276][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.632167][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.641353][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.655481][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.666984][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.675159][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.682934][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.691413][ T333] device veth0_vlan entered promiscuous mode [ 27.702109][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.711279][ T333] device veth1_macvtap entered promiscuous mode [ 27.721107][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.731281][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.766508][ T333] syz-executor (333) used greatest stack depth: 21984 bytes left 2026/06/11 12:04:51 executed programs: 0 [ 28.345414][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.352651][ T370] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.360225][ T370] device bridge_slave_0 entered promiscuous mode [ 28.367228][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.374327][ T370] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.381749][ T370] device bridge_slave_1 entered promiscuous mode [ 28.427453][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.434521][ T370] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.441829][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.449066][ T370] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.469568][ T337] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.477334][ T337] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.484966][ T337] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.494127][ T337] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.502472][ T337] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.509528][ T337] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.518734][ T337] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.527571][ T337] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.534836][ T337] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.547863][ T337] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 28.557371][ T337] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 28.577856][ T337] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 28.590440][ T337] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 28.598628][ T337] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 28.606387][ T337] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 28.619955][ T370] device veth0_vlan entered promiscuous mode [ 28.630305][ T337] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 28.639912][ T370] device veth1_macvtap entered promiscuous mode [ 28.649821][ T337] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.660715][ T337] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 28.691215][ T375] ================================================================== [ 28.699330][ T375] BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 [ 28.706112][ T375] Write of size 8 at addr ffff88812df8ed50 by task syz.2.17/375 [ 28.713744][ T375] [ 28.716077][ T375] CPU: 0 PID: 375 Comm: syz.2.17 Not tainted syzkaller #0 [ 28.723184][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 28.733250][ T375] Call Trace: [ 28.736525][ T375] [ 28.739467][ T375] __dump_stack+0x21/0x24 [ 28.743826][ T375] dump_stack_lvl+0x110/0x170 [ 28.748508][ T375] ? __cfi_dump_stack_lvl+0x8/0x8 [ 28.753536][ T375] ? mutex_lock+0x86/0x1b0 [ 28.757958][ T375] print_address_description+0x71/0x200 [ 28.763505][ T375] print_report+0x4a/0x60 [ 28.767833][ T375] kasan_report+0x122/0x150 [ 28.772340][ T375] ? mutex_lock+0x86/0x1b0 [ 28.776765][ T375] kasan_check_range+0x249/0x2a0 [ 28.781708][ T375] __kasan_check_write+0x14/0x20 [ 28.786652][ T375] mutex_lock+0x86/0x1b0 [ 28.790896][ T375] ? __cfi_mutex_lock+0x10/0x10 [ 28.795757][ T375] ? l2tp_session_put+0xaf/0x1a0 [ 28.800707][ T375] ? l2tp_session_delete+0x3f0/0x4e0 [ 28.806252][ T375] pppol2tp_release+0x194/0x2d0 [ 28.811111][ T375] sock_close+0xf1/0x290 [ 28.815358][ T375] ? __cfi_sock_close+0x10/0x10 [ 28.820223][ T375] __fput+0x1fc/0x8f0 [ 28.824227][ T375] ____fput+0x15/0x20 [ 28.828205][ T375] task_work_run+0x1e1/0x250 [ 28.832883][ T375] ? __cfi_task_work_run+0x10/0x10 [ 28.837997][ T375] ? __cfi___close_range+0x10/0x10 [ 28.843107][ T375] exit_to_user_mode_loop+0x9b/0xb0 [ 28.848315][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 28.853786][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 28.859273][ T375] do_syscall_64+0x58/0xa0 [ 28.863738][ T375] ? clear_bhb_loop+0x30/0x80 [ 28.868433][ T375] ? clear_bhb_loop+0x30/0x80 [ 28.873119][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.879034][ T375] RIP: 0033:0x7f03f639ce59 [ 28.883481][ T375] 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 [ 28.903095][ T375] RSP: 002b:00007ffca86672e8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 28.911525][ T375] RAX: 0000000000000000 RBX: 00007ffca86673d0 RCX: 00007f03f639ce59 [ 28.919509][ T375] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 28.927516][ T375] RBP: 0000000000006ff4 R08: 0000000000000001 R09: 0000000000000000 [ 28.935501][ T375] R10: 0000001b33120000 R11: 0000000000000246 R12: 0000000000000000 [ 28.943482][ T375] R13: 00007f03f6615fac R14: 00007f03f6615fa8 R15: 00007f03f6615fa0 [ 28.951474][ T375] [ 28.954502][ T375] [ 28.956836][ T375] Allocated by task 375: [ 28.961080][ T375] kasan_set_track+0x4b/0x70 [ 28.965687][ T375] kasan_save_alloc_info+0x25/0x30 [ 28.970807][ T375] __kasan_kmalloc+0x95/0xb0 [ 28.975416][ T375] __kmalloc+0xb1/0x1e0 [ 28.979587][ T375] l2tp_session_create+0x38/0xbe0 [ 28.984622][ T375] pppol2tp_connect+0xbef/0x1620 [ 28.989573][ T375] __sys_connect+0x3da/0x460 [ 28.994180][ T375] __x64_sys_connect+0x7a/0x90 [ 28.998957][ T375] x64_sys_call+0x88d/0x9a0 [ 29.003473][ T375] do_syscall_64+0x4c/0xa0 [ 29.007903][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 29.013824][ T375] [ 29.016164][ T375] Freed by task 375: [ 29.020074][ T375] kasan_set_track+0x4b/0x70 [ 29.024716][ T375] kasan_save_free_info+0x31/0x50 [ 29.029765][ T375] ____kasan_slab_free+0x132/0x180 [ 29.034903][ T375] __kasan_slab_free+0x11/0x20 [ 29.039686][ T375] slab_free_freelist_hook+0xc2/0x190 [ 29.045066][ T375] __kmem_cache_free+0xb7/0x1b0 [ 29.049933][ T375] kfree+0x6f/0xf0 [ 29.053692][ T375] l2tp_session_put+0xaf/0x1a0 [ 29.058466][ T375] l2tp_session_delete+0x3f0/0x4e0 [ 29.063592][ T375] pppol2tp_release+0x185/0x2d0 [ 29.068474][ T375] sock_close+0xf1/0x290 [ 29.072736][ T375] __fput+0x1fc/0x8f0 [ 29.076756][ T375] ____fput+0x15/0x20 [ 29.080760][ T375] task_work_run+0x1e1/0x250 [ 29.085388][ T375] exit_to_user_mode_loop+0x9b/0xb0 [ 29.090603][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 29.096093][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 29.101561][ T375] do_syscall_64+0x58/0xa0 [ 29.105993][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 29.111906][ T375] [ 29.114244][ T375] The buggy address belongs to the object at ffff88812df8ec00 [ 29.114244][ T375] which belongs to the cache kmalloc-512 of size 512 [ 29.128307][ T375] The buggy address is located 336 bytes inside of [ 29.128307][ T375] 512-byte region [ffff88812df8ec00, ffff88812df8ee00) [ 29.141590][ T375] [ 29.143919][ T375] The buggy address belongs to the physical page: [ 29.150348][ T375] page:ffffea0004b7e300 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12df8c [ 29.160603][ T375] head:ffffea0004b7e300 order:2 compound_mapcount:0 compound_pincount:0 [ 29.169020][ T375] flags: 0x4000000000010200(slab|head|zone=1) [ 29.175113][ T375] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 29.183720][ T375] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 29.192319][ T375] page dumped because: kasan: bad access detected [ 29.198748][ T375] page_owner tracks the page as allocated [ 29.204468][ T375] page last allocated via order 2, migratetype Unmovable, gfp_mask 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 19, tgid 19 (kworker/0:1), ts 28679549135, free_ts 28113992960 [ 29.224707][ T375] post_alloc_hook+0x1f5/0x210 [ 29.229493][ T375] prep_new_page+0x1c/0x110 [ 29.234021][ T375] get_page_from_freelist+0x2d12/0x2d80 [ 29.239586][ T375] __alloc_pages+0x1fa/0x610 [ 29.244190][ T375] alloc_slab_page+0x6e/0xf0 [ 29.248787][ T375] new_slab+0x98/0x3d0 [ 29.252861][ T375] ___slab_alloc+0x6bd/0xb20 [ 29.257465][ T375] __slab_alloc+0x5e/0xa0 [ 29.261820][ T375] __kmem_cache_alloc_node+0x203/0x2c0 [ 29.267292][ T375] __kmalloc+0xa1/0x1e0 [ 29.271461][ T375] ___neigh_create+0x6f6/0x1e20 [ 29.276511][ T375] __neigh_create+0x31/0x40 [ 29.281028][ T375] ip6_finish_output2+0xa56/0x18a0 [ 29.286158][ T375] ip6_finish_output+0x5f9/0xbb0 [ 29.291109][ T375] ip6_output+0x1fa/0x410 [ 29.295452][ T375] ndisc_send_skb+0x7dc/0xcc0 [ 29.300236][ T375] page last free stack trace: [ 29.304916][ T375] free_unref_page_prepare+0x7f8/0x800 [ 29.310390][ T375] free_unref_page+0x95/0x540 [ 29.315172][ T375] __free_pages+0x67/0x100 [ 29.319609][ T375] free_pages+0x82/0x90 [ 29.323783][ T375] kasan_depopulate_vmalloc_pte+0x6b/0x90 [ 29.329518][ T375] __apply_to_page_range+0x8de/0xc80 [ 29.334827][ T375] apply_to_existing_page_range+0x38/0x50 [ 29.340566][ T375] kasan_release_vmalloc+0x97/0xb0 [ 29.345691][ T375] __purge_vmap_area_lazy+0xf15/0x1870 [ 29.351172][ T375] drain_vmap_area_work+0x3e/0xd0 [ 29.356207][ T375] process_one_work+0x71f/0xc40 [ 29.361065][ T375] worker_thread+0xa29/0x11e0 [ 29.365757][ T375] kthread+0x281/0x320 [ 29.369842][ T375] ret_from_fork+0x1f/0x30 [ 29.374272][ T375] [ 29.376604][ T375] Memory state around the buggy address: [ 29.382237][ T375] ffff88812df8ec00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.390319][ T375] ffff88812df8ec80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.398386][ T375] >ffff88812df8ed00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.406449][ T375] ^ [ 29.413819][ T375] ffff88812df8ed80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.421888][ T375] ffff88812df8ee00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.429956][ T375] ================================================================== [ 29.438453][ T375] Disabling lock debugging due to kernel taint