Warning: Permanently added '10.128.0.227' (ED25519) to the list of known hosts. 2026/07/09 01:47:09 parsed 1 programs 2026/07/09 01:47:09 serving rpc on tcp://34985 [ 23.879139][ T30] audit: type=1400 audit(1783561629.157:64): avc: denied { node_bind } for pid=293 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 23.900622][ T30] audit: type=1400 audit(1783561629.157:65): avc: denied { module_request } for pid=293 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 [ 24.545305][ T30] audit: type=1400 audit(1783561629.827:66): avc: denied { mounton } for pid=299 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 [ 24.546502][ T299] cgroup: Unknown subsys name 'net' [ 24.568011][ T30] audit: type=1400 audit(1783561629.827:67): avc: denied { mount } for pid=299 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 [ 24.595636][ T30] audit: type=1400 audit(1783561629.857:68): avc: denied { unmount } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 24.595851][ T299] cgroup: Unknown subsys name 'devices' [ 24.741870][ T299] cgroup: Unknown subsys name 'hugetlb' [ 24.747478][ T299] cgroup: Unknown subsys name 'rlimit' [ 24.952616][ T30] audit: type=1400 audit(1783561630.237:69): avc: denied { setattr } for pid=299 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=254 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 24.975806][ T30] audit: type=1400 audit(1783561630.237:70): avc: denied { create } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.996220][ T30] audit: type=1400 audit(1783561630.237:71): avc: denied { write } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.002833][ T304] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 25.016509][ T30] audit: type=1400 audit(1783561630.237:72): avc: denied { read } for pid=299 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 [ 25.045194][ T30] audit: type=1400 audit(1783561630.237:73): avc: denied { mounton } for pid=299 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 [ 25.095575][ T299] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 25.560126][ T306] request_module fs-gadgetfs succeeded, but still no fs? [ 25.910923][ T328] syz-executor (328) used greatest stack depth: 21440 bytes left [ 26.160539][ T358] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.170617][ T358] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.178189][ T358] device bridge_slave_0 entered promiscuous mode [ 26.185424][ T358] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.193156][ T358] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.200650][ T358] device bridge_slave_1 entered promiscuous mode [ 26.236688][ T358] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.243867][ T358] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.251175][ T358] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.258189][ T358] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.275749][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.283502][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.290984][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.299806][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.307993][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.315030][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.323870][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.332034][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.339045][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.350986][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.359925][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.373169][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.383882][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.392212][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.399661][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.408231][ T358] device veth0_vlan entered promiscuous mode [ 26.418059][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.427114][ T358] device veth1_macvtap entered promiscuous mode [ 26.436153][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.446354][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.475008][ T358] syz-executor (358) used greatest stack depth: 21344 bytes left 2026/07/09 01:47:11 executed programs: 0 [ 26.617801][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.624864][ T368] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.632700][ T368] device bridge_slave_0 entered promiscuous mode [ 26.639555][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.646954][ T368] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.654495][ T368] device bridge_slave_1 entered promiscuous mode [ 26.693881][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.700931][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.708148][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.715862][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.732136][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.739730][ T315] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.746977][ T315] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.764877][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.773006][ T315] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.780039][ T315] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.789535][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.797862][ T315] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.804894][ T315] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.815468][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.824598][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 26.832712][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.849535][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 26.858084][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.868688][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 26.876686][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.885037][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.892521][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.900841][ T368] device veth0_vlan entered promiscuous mode [ 26.909575][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 26.917744][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.930969][ T368] device veth1_macvtap entered promiscuous mode [ 26.939316][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 26.947107][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 26.955433][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.964819][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 26.973039][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.020415][ C1] ================================================================== [ 27.028507][ C1] BUG: KASAN: use-after-free in rcu_cblist_dequeue+0x6c/0xb0 [ 27.035991][ C1] Read of size 8 at addr ffff88811022b590 by task ksoftirqd/1/25 [ 27.043716][ C1] [ 27.046041][ C1] CPU: 1 PID: 25 Comm: ksoftirqd/1 Not tainted syzkaller #0 [ 27.053353][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 27.063414][ C1] Call Trace: [ 27.066684][ C1] [ 27.069597][ C1] __dump_stack+0x21/0x30 [ 27.073913][ C1] dump_stack_lvl+0x110/0x170 [ 27.078571][ C1] ? show_regs_print_info+0x20/0x20 [ 27.083839][ C1] ? load_image+0x3f0/0x3f0 [ 27.088325][ C1] print_address_description+0x7f/0x2c0 [ 27.093854][ C1] ? rcu_cblist_dequeue+0x6c/0xb0 [ 27.098861][ C1] kasan_report+0x10f/0x150 [ 27.103441][ C1] ? rcu_cblist_dequeue+0x6c/0xb0 [ 27.108556][ C1] __asan_report_load8_noabort+0x14/0x20 [ 27.114188][ C1] rcu_cblist_dequeue+0x6c/0xb0 [ 27.119035][ C1] rcu_do_batch+0x47d/0xbf0 [ 27.123537][ C1] ? local_bh_enable+0x20/0x20 [ 27.128303][ C1] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 27.134107][ C1] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 27.139902][ C1] ? rcu_report_qs_rnp+0x37e/0x390 [ 27.145002][ C1] rcu_core+0x4a3/0xef0 [ 27.149142][ C1] ? rcu_cpu_kthread_park+0x90/0x90 [ 27.154324][ C1] ? __this_cpu_preempt_check+0x13/0x20 [ 27.159858][ C1] ? rcu_softirq_qs+0xd7/0x2f0 [ 27.164603][ C1] ? rcu_get_gp_kthreads_prio+0x10/0x10 [ 27.170128][ C1] ? irqtime_account_irq+0x76/0x390 [ 27.175306][ C1] rcu_core_si+0x9/0x10 [ 27.179450][ C1] handle_softirqs+0x250/0x560 [ 27.184199][ C1] ? ksoftirqd_should_run+0x20/0x20 [ 27.189381][ C1] run_ksoftirqd+0x28/0x40 [ 27.193789][ C1] smpboot_thread_fn+0x446/0x880 [ 27.198712][ C1] kthread+0x3f5/0x4f0 [ 27.202761][ C1] ? cpu_report_death+0x1b0/0x1b0 [ 27.207779][ C1] ? kthread_blkcg+0xd0/0xd0 [ 27.212368][ C1] ret_from_fork+0x1f/0x30 [ 27.216787][ C1] [ 27.219791][ C1] [ 27.222097][ C1] Allocated by task 373: [ 27.226315][ C1] __kasan_kmalloc+0xd4/0x100 [ 27.230974][ C1] __kmalloc+0x13d/0x2c0 [ 27.235223][ C1] l2tp_session_create+0x39/0xb60 [ 27.240228][ C1] pppol2tp_connect+0xbf5/0x1640 [ 27.245156][ C1] __sys_connect+0x3cb/0x450 [ 27.249755][ C1] __x64_sys_connect+0x7a/0x90 [ 27.254504][ C1] x64_sys_call+0x7c/0x9a0 [ 27.258905][ C1] do_syscall_64+0x4c/0xa0 [ 27.263309][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 27.269187][ C1] [ 27.271506][ C1] Freed by task 10: [ 27.275292][ C1] kasan_set_track+0x4a/0x70 [ 27.279866][ C1] kasan_set_free_info+0x23/0x40 [ 27.284784][ C1] ____kasan_slab_free+0x125/0x160 [ 27.289873][ C1] __kasan_slab_free+0x11/0x20 [ 27.294617][ C1] slab_free_freelist_hook+0xc2/0x190 [ 27.299965][ C1] kfree+0xc4/0x270 [ 27.303753][ C1] l2tp_session_put+0xaf/0x1a0 [ 27.308498][ C1] l2tp_session_delete+0x3a9/0x4a0 [ 27.313586][ C1] l2tp_tunnel_del_work+0x180/0x3d0 [ 27.318763][ C1] process_one_work+0x6c8/0xbb0 [ 27.323598][ C1] worker_thread+0xaa0/0x1250 [ 27.328258][ C1] kthread+0x3f5/0x4f0 [ 27.332393][ C1] ret_from_fork+0x1f/0x30 [ 27.336790][ C1] [ 27.339091][ C1] Last potentially related work creation: [ 27.344779][ C1] kasan_save_stack+0x3a/0x60 [ 27.349437][ C1] __kasan_record_aux_stack+0xd2/0x100 [ 27.354875][ C1] kasan_record_aux_stack_noalloc+0xb/0x10 [ 27.360667][ C1] call_rcu+0x10b/0xf60 [ 27.364813][ C1] pppol2tp_release+0x1e3/0x2b0 [ 27.369652][ C1] sock_close+0xb8/0x200 [ 27.373880][ C1] __fput+0x22b/0x900 [ 27.377847][ C1] ____fput+0x15/0x20 [ 27.381809][ C1] task_work_run+0x127/0x190 [ 27.386381][ C1] exit_to_user_mode_loop+0xd0/0xe0 [ 27.391563][ C1] exit_to_user_mode_prepare+0x87/0xd0 [ 27.397005][ C1] syscall_exit_to_user_mode+0x1a/0x30 [ 27.402452][ C1] do_syscall_64+0x58/0xa0 [ 27.406955][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 27.412834][ C1] [ 27.415142][ C1] The buggy address belongs to the object at ffff88811022b400 [ 27.415142][ C1] which belongs to the cache kmalloc-512 of size 512 [ 27.429263][ C1] The buggy address is located 400 bytes inside of [ 27.429263][ C1] 512-byte region [ffff88811022b400, ffff88811022b600) [ 27.442522][ C1] The buggy address belongs to the page: [ 27.448130][ C1] page:ffffea0004408a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88811022a000 pfn:0x110228 [ 27.459661][ C1] head:ffffea0004408a00 order:2 compound_mapcount:0 compound_pincount:0 [ 27.467962][ C1] flags: 0x4000000000010200(slab|head|zone=1) [ 27.474050][ C1] raw: 4000000000010200 ffffea0004408900 0000000200000002 ffff888100042f00 [ 27.482635][ C1] raw: ffff88811022a000 0000000080100005 00000001ffffffff 0000000000000000 [ 27.491196][ C1] page dumped because: kasan: bad access detected [ 27.497591][ C1] page_owner tracks the page as allocated [ 27.503304][ C1] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 109, ts 4100586519, free_ts 0 [ 27.521359][ C1] post_alloc_hook+0x192/0x1b0 [ 27.526115][ C1] prep_new_page+0x1c/0x110 [ 27.530608][ C1] get_page_from_freelist+0x2c3a/0x2cd0 [ 27.536162][ C1] __alloc_pages+0x1a2/0x460 [ 27.540733][ C1] new_slab+0xa0/0x4d0 [ 27.544782][ C1] ___slab_alloc+0x3ac/0x840 [ 27.549452][ C1] __slab_alloc+0x49/0x90 [ 27.553768][ C1] __kmalloc_track_caller+0x169/0x2c0 [ 27.559121][ C1] __alloc_skb+0x210/0x730 [ 27.563606][ C1] alloc_skb_with_frags+0xa8/0x620 [ 27.568700][ C1] sock_alloc_send_pskb+0x87f/0x9a0 [ 27.573879][ C1] unix_dgram_sendmsg+0x6f3/0x19b0 [ 27.579000][ C1] sock_write_iter+0x2a6/0x3a0 [ 27.583742][ C1] vfs_write+0x831/0xfd0 [ 27.587965][ C1] ksys_write+0x14a/0x260 [ 27.592277][ C1] __x64_sys_write+0x7b/0x90 [ 27.596849][ C1] page_owner free stack trace missing [ 27.602293][ C1] [ 27.604603][ C1] Memory state around the buggy address: [ 27.610213][ C1] ffff88811022b480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.618394][ C1] ffff88811022b500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.627104][ C1] >ffff88811022b580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.635178][ C1] ^ [ 27.639760][ C1] ffff88811022b600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.647981][ C1] ffff88811022b680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.656023][ C1] ================================================================== [ 27.664061][ C1] Disabling lock debugging due to kernel taint