Warning: Permanently added '10.128.0.48' (ED25519) to the list of known hosts. 2026/10/20 18:55:08 parsed 1 programs 2026/10/20 18:55:08 serving rpc on tcp://39693 [ 23.646939][ T28] audit: type=1400 audit(1792522508.314:64): avc: denied { node_bind } for pid=295 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 23.667697][ T28] audit: type=1400 audit(1792522508.314:65): avc: denied { module_request } for pid=295 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 [ 24.388135][ T28] audit: type=1400 audit(1792522509.054:66): avc: denied { mounton } for pid=301 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 [ 24.389150][ T301] cgroup: Unknown subsys name 'net' [ 24.410936][ T28] audit: type=1400 audit(1792522509.054:67): avc: denied { mount } for pid=301 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 [ 24.438302][ T28] audit: type=1400 audit(1792522509.084:68): avc: denied { unmount } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 24.438444][ T301] cgroup: Unknown subsys name 'devices' [ 24.551266][ T301] cgroup: Unknown subsys name 'hugetlb' [ 24.556866][ T301] cgroup: Unknown subsys name 'rlimit' [ 24.664754][ T28] audit: type=1400 audit(1792522509.334:69): avc: denied { setattr } for pid=301 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 [ 24.687921][ T28] audit: type=1400 audit(1792522509.334:70): avc: denied { create } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.708417][ T28] audit: type=1400 audit(1792522509.334:71): avc: denied { write } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.716793][ T306] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 24.728722][ T28] audit: type=1400 audit(1792522509.334:72): avc: denied { read } for pid=301 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 [ 24.757436][ T28] audit: type=1400 audit(1792522509.334:73): avc: denied { mounton } for pid=301 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 [ 24.816727][ T301] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 25.445460][ T308] request_module fs-gadgetfs succeeded, but still no fs? [ 26.045539][ T358] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.053245][ T358] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.060761][ T358] device bridge_slave_0 entered promiscuous mode [ 26.067574][ T358] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.074888][ T358] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.082278][ T358] device bridge_slave_1 entered promiscuous mode [ 26.120436][ T358] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.127482][ T358] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.134768][ T358] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.141880][ T358] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.160002][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.167656][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.174984][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.184354][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.192670][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.199732][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.208227][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.216743][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.223786][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.235755][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.244839][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.257708][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.268409][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.276587][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.284142][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.292759][ T358] device veth0_vlan entered promiscuous mode [ 26.302965][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.312090][ T358] device veth1_macvtap entered promiscuous mode [ 26.321224][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.331118][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/10/20 18:55:11 executed programs: 0 [ 26.580060][ T369] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.587096][ T369] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.594481][ T369] device bridge_slave_0 entered promiscuous mode [ 26.601415][ T369] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.608425][ T369] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.615798][ T369] device bridge_slave_1 entered promiscuous mode [ 26.659540][ T369] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.666575][ T369] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.673844][ T369] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.680874][ T369] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.698310][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.706536][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.713940][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.731345][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.739545][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.746570][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.755222][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.763385][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.770416][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.786310][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.795680][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.808567][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.820532][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.828502][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.836125][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.851977][ T369] device veth0_vlan entered promiscuous mode [ 26.861808][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.870770][ T369] device veth1_macvtap entered promiscuous mode [ 26.879866][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.890025][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.914497][ T373] ================================================================== [ 26.922573][ T373] BUG: KASAN: use-after-free in rcu_segcblist_enqueue+0x9c/0xb0 [ 26.930196][ T373] Write of size 8 at addr ffff8881137aa190 by task syz.2.17/373 [ 26.937814][ T373] [ 26.940147][ T373] CPU: 0 PID: 373 Comm: syz.2.17 Not tainted syzkaller #0 [ 26.947254][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 26.957302][ T373] Call Trace: [ 26.960565][ T373] [ 26.963479][ T373] __dump_stack+0x21/0x24 [ 26.967788][ T373] dump_stack_lvl+0x110/0x170 [ 26.972442][ T373] ? __cfi_dump_stack_lvl+0x8/0x8 [ 26.977454][ T373] ? rcu_segcblist_enqueue+0x9c/0xb0 [ 26.982745][ T373] print_address_description+0x71/0x200 [ 26.988279][ T373] print_report+0x4a/0x60 [ 26.992613][ T373] kasan_report+0x122/0x150 [ 26.997104][ T373] ? rcu_segcblist_enqueue+0x9c/0xb0 [ 27.002378][ T373] __asan_report_store8_noabort+0x17/0x20 [ 27.008086][ T373] rcu_segcblist_enqueue+0x9c/0xb0 [ 27.013184][ T373] call_rcu+0x554/0xf50 [ 27.017332][ T373] ? __cfi_call_rcu+0x10/0x10 [ 27.021993][ T373] ? __kasan_check_write+0x14/0x20 [ 27.027088][ T373] ? selinux_inode_free_security+0x21f/0x230 [ 27.033052][ T373] security_inode_free+0xc5/0xe0 [ 27.037975][ T373] __destroy_inode+0x175/0x500 [ 27.042719][ T373] evict+0x777/0x8c0 [ 27.046596][ T373] ? proc_nr_inodes+0x2f0/0x2f0 [ 27.051428][ T373] ? _raw_spin_lock+0x94/0xf0 [ 27.056079][ T373] ? __cfi__raw_spin_lock+0x10/0x10 [ 27.061256][ T373] ? __kasan_check_write+0x14/0x20 [ 27.066348][ T373] iput+0x633/0x690 [ 27.070137][ T373] dentry_unlink_inode+0x346/0x3f0 [ 27.075225][ T373] __dentry_kill+0x46c/0x680 [ 27.079793][ T373] dentry_kill+0xc0/0x2a0 [ 27.084102][ T373] dput+0x42/0x80 [ 27.087735][ T373] __fput+0x5c0/0x8f0 [ 27.091704][ T373] ____fput+0x15/0x20 [ 27.095669][ T373] task_work_run+0x1e1/0x250 [ 27.100238][ T373] ? __cfi_task_work_run+0x10/0x10 [ 27.105326][ T373] ? __cfi___close_range+0x10/0x10 [ 27.110417][ T373] exit_to_user_mode_loop+0x9b/0xb0 [ 27.115600][ T373] exit_to_user_mode_prepare+0x87/0xd0 [ 27.121041][ T373] syscall_exit_to_user_mode+0x1a/0x30 [ 27.126478][ T373] do_syscall_64+0x58/0xa0 [ 27.130873][ T373] ? clear_bhb_loop+0x30/0x80 [ 27.135546][ T373] ? clear_bhb_loop+0x30/0x80 [ 27.140201][ T373] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 27.146067][ T373] RIP: 0033:0x7f975019f559 [ 27.150462][ T373] 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 [ 27.170046][ T373] RSP: 002b:00007ffc7bc840f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 27.178438][ T373] RAX: 0000000000000000 RBX: 00007ffc7bc841e0 RCX: 00007f975019f559 [ 27.186397][ T373] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 27.194352][ T373] RBP: 000000000000690e R08: 0000000000000001 R09: 0000000000000000 [ 27.202305][ T373] R10: 0000001b33020000 R11: 0000000000000246 R12: 0000000000000000 [ 27.210258][ T373] R13: 00007f9750425fac R14: 00007f9750425fa8 R15: 00007f9750425fa0 [ 27.218214][ T373] [ 27.221211][ T373] [ 27.223509][ T373] Allocated by task 373: [ 27.227719][ T373] kasan_set_track+0x4b/0x70 [ 27.232294][ T373] kasan_save_alloc_info+0x1f/0x30 [ 27.237383][ T373] __kasan_kmalloc+0x95/0xb0 [ 27.241949][ T373] __kmalloc+0xb4/0x1e0 [ 27.246075][ T373] l2tp_session_create+0x38/0xbd0 [ 27.251078][ T373] pppol2tp_connect+0xbf5/0x1640 [ 27.255993][ T373] __sys_connect+0x3da/0x460 [ 27.260560][ T373] __x64_sys_connect+0x7a/0x90 [ 27.265306][ T373] x64_sys_call+0x88d/0x9a0 [ 27.269785][ T373] do_syscall_64+0x4c/0xa0 [ 27.274176][ T373] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 27.280069][ T373] [ 27.282378][ T373] Freed by task 8: [ 27.286073][ T373] kasan_set_track+0x4b/0x70 [ 27.290646][ T373] kasan_save_free_info+0x2b/0x40 [ 27.295646][ T373] ____kasan_slab_free+0x132/0x180 [ 27.300734][ T373] __kasan_slab_free+0x11/0x20 [ 27.305479][ T373] slab_free_freelist_hook+0xc2/0x190 [ 27.310835][ T373] __kmem_cache_free+0xb7/0x1b0 [ 27.315670][ T373] kfree+0x6f/0xf0 [ 27.319367][ T373] l2tp_session_put+0xaf/0x1a0 [ 27.324118][ T373] l2tp_session_delete+0x3df/0x4d0 [ 27.329209][ T373] l2tp_tunnel_del_work+0x199/0x410 [ 27.334385][ T373] process_one_work+0x717/0xc30 [ 27.339208][ T373] worker_thread+0xa4d/0x11d0 [ 27.343858][ T373] kthread+0x281/0x320 [ 27.347901][ T373] ret_from_fork+0x1f/0x30 [ 27.352293][ T373] [ 27.354592][ T373] Last potentially related work creation: [ 27.360278][ T373] kasan_save_stack+0x3a/0x60 [ 27.364933][ T373] __kasan_record_aux_stack+0xb6/0xc0 [ 27.370281][ T373] kasan_record_aux_stack_noalloc+0xb/0x10 [ 27.376065][ T373] call_rcu+0xcf/0xf50 [ 27.380111][ T373] pppol2tp_release+0x1e3/0x2b0 [ 27.384941][ T373] sock_close+0xc9/0x220 [ 27.389157][ T373] __fput+0x1fd/0x8f0 [ 27.393149][ T373] ____fput+0x15/0x20 [ 27.397107][ T373] task_work_run+0x1e1/0x250 [ 27.401672][ T373] exit_to_user_mode_loop+0x9b/0xb0 [ 27.406877][ T373] exit_to_user_mode_prepare+0x87/0xd0 [ 27.412338][ T373] syscall_exit_to_user_mode+0x1a/0x30 [ 27.417788][ T373] do_syscall_64+0x58/0xa0 [ 27.422183][ T373] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 27.428055][ T373] [ 27.430360][ T373] The buggy address belongs to the object at ffff8881137aa000 [ 27.430360][ T373] which belongs to the cache kmalloc-512 of size 512 [ 27.444388][ T373] The buggy address is located 400 bytes inside of [ 27.444388][ T373] 512-byte region [ffff8881137aa000, ffff8881137aa200) [ 27.457648][ T373] [ 27.459961][ T373] The buggy address belongs to the physical page: [ 27.466351][ T373] page:ffffea00044dea00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1137a8 [ 27.476577][ T373] head:ffffea00044dea00 order:2 compound_mapcount:0 compound_pincount:0 [ 27.484878][ T373] flags: 0x4000000000010200(slab|head|zone=1) [ 27.490939][ T373] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 27.499501][ T373] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 27.508068][ T373] page dumped because: kasan: bad access detected [ 27.514484][ T373] page_owner tracks the page as allocated [ 27.520179][ T373] 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 369, tgid 369 (syz-executor), ts 26907689824, free_ts 26890074536 [ 27.542729][ T373] post_alloc_hook+0x1f5/0x210 [ 27.547479][ T373] prep_new_page+0x1c/0x110 [ 27.551958][ T373] get_page_from_freelist+0x2ca9/0x2d20 [ 27.557481][ T373] __alloc_pages+0x1fa/0x610 [ 27.562051][ T373] alloc_slab_page+0x6e/0xf0 [ 27.566626][ T373] new_slab+0x98/0x3e0 [ 27.570668][ T373] ___slab_alloc+0x70f/0xb70 [ 27.575241][ T373] __slab_alloc+0x5e/0xa0 [ 27.579552][ T373] __kmem_cache_alloc_node+0x204/0x2d0 [ 27.584990][ T373] __kmalloc_node_track_caller+0xa1/0x1e0 [ 27.590687][ T373] __alloc_skb+0x226/0x4a0 [ 27.595084][ T373] netlink_ack+0x373/0x1160 [ 27.599566][ T373] netlink_rcv_skb+0x27e/0x450 [ 27.604307][ T373] rtnetlink_rcv+0x1c/0x20 [ 27.608699][ T373] netlink_unicast+0x8c1/0xa60 [ 27.613436][ T373] netlink_sendmsg+0x8b9/0xbd0 [ 27.618177][ T373] page last free stack trace: [ 27.622819][ T373] free_unref_page_prepare+0x81b/0x820 [ 27.628255][ T373] free_unref_page+0x93/0x530 [ 27.632907][ T373] __free_pages+0x67/0x100 [ 27.637298][ T373] __free_slab+0xc7/0x1a0 [ 27.641601][ T373] __unfreeze_partials+0x15a/0x190 [ 27.646684][ T373] put_cpu_partial+0xa9/0x100 [ 27.651333][ T373] __slab_free+0x1c4/0x280 [ 27.655721][ T373] ___cache_free+0xbf/0xd0 [ 27.660118][ T373] qlist_free_all+0xc6/0x140 [ 27.664691][ T373] kasan_quarantine_reduce+0x14a/0x170 [ 27.670128][ T373] __kasan_slab_alloc+0x24/0x80 [ 27.674956][ T373] slab_post_alloc_hook+0x4f/0x2d0 [ 27.680042][ T373] __kmem_cache_alloc_node+0x194/0x2d0 [ 27.685497][ T373] kmalloc_trace+0x29/0xb0 [ 27.689890][ T373] gro_cells_destroy+0x31d/0x3f0 [ 27.694823][ T373] ip_tunnel_dev_free+0x19/0x60 [ 27.699654][ T373] [ 27.701958][ T373] Memory state around the buggy address: [ 27.707561][ T373] ffff8881137aa080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.715600][ T373] ffff8881137aa100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.723637][ T373] >ffff8881137aa180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.731668][ T373] ^ [ 27.736234][ T373] ffff8881137aa200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.744273][ T373] ffff8881137aa280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.752326][ T373] ================================================================== [ 27.760376][ T373] Disabling lock debugging due to kernel taint