Warning: Permanently added '10.128.1.16' (ED25519) to the list of known hosts. 2026/06/28 18:43:09 parsed 1 programs 2026/06/28 18:43:09 serving rpc on tcp://40625 [ 20.425253][ T24] audit: type=1400 audit(1782672189.459:64): 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 [ 20.428762][ T24] audit: type=1400 audit(1782672189.459:65): 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 [ 20.433761][ T24] audit: type=1400 audit(1782672189.459:66): 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 [ 20.998127][ T24] audit: type=1400 audit(1782672190.029:67): 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 [ 20.999129][ T294] cgroup: Unknown subsys name 'net' [ 21.020786][ T24] audit: type=1400 audit(1782672190.029:68): 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 [ 21.048026][ T24] audit: type=1400 audit(1782672190.069:69): 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 [ 21.048252][ T294] cgroup: Unknown subsys name 'devices' [ 21.162798][ T294] cgroup: Unknown subsys name 'hugetlb' [ 21.168403][ T294] cgroup: Unknown subsys name 'rlimit' [ 21.341113][ T24] audit: type=1400 audit(1782672190.369:70): 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 [ 21.364316][ T24] audit: type=1400 audit(1782672190.369:71): 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 [ 21.384756][ T24] audit: type=1400 audit(1782672190.369:72): 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 [ 21.404999][ T24] audit: type=1400 audit(1782672190.369:73): 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 [ 21.421071][ T297] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 21.471023][ T294] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 21.868438][ T302] request_module fs-gadgetfs succeeded, but still no fs? [ 21.878993][ T302] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 21.977096][ T312] bridge0: port 1(bridge_slave_0) entered blocking state [ 21.984310][ T312] bridge0: port 1(bridge_slave_0) entered disabled state [ 21.991857][ T312] device bridge_slave_0 entered promiscuous mode [ 21.999707][ T312] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.006785][ T312] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.014066][ T312] device bridge_slave_1 entered promiscuous mode [ 22.045292][ T312] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.052368][ T312] bridge0: port 2(bridge_slave_1) entered forwarding state [ 22.059601][ T312] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.066630][ T312] bridge0: port 1(bridge_slave_0) entered forwarding state [ 22.081735][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 22.088986][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.096569][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 22.104413][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 22.122264][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 22.130513][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 22.138707][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.145737][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 22.153298][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 22.161496][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.168511][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 22.175923][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 22.184038][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 22.195158][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 22.203137][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 22.210509][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 22.218620][ T312] device veth0_vlan entered promiscuous mode [ 22.228013][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 22.238080][ T312] device veth1_macvtap entered promiscuous mode [ 22.247635][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 22.257486][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/06/28 18:43:11 executed programs: 0 [ 22.856385][ T363] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.863567][ T363] bridge0: port 1(bridge_slave_0) entered disabled state [ 22.870973][ T363] device bridge_slave_0 entered promiscuous mode [ 22.877868][ T363] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.885146][ T363] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.892880][ T363] device bridge_slave_1 entered promiscuous mode [ 22.930969][ T363] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.938029][ T363] bridge0: port 2(bridge_slave_1) entered forwarding state [ 22.945322][ T363] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.952349][ T363] bridge0: port 1(bridge_slave_0) entered forwarding state [ 22.971952][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 22.979548][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 22.987609][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.996757][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 23.005267][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 23.013501][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.020511][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.032516][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 23.040835][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 23.049020][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.056042][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.066885][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 23.075128][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 23.095116][ T363] device veth0_vlan entered promiscuous mode [ 23.101758][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 23.109870][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 23.118005][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 23.126490][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 23.134907][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 23.142926][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 23.150947][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 23.158527][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 23.167788][ T48] device bridge_slave_1 left promiscuous mode [ 23.173994][ T48] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.181414][ T48] device bridge_slave_0 left promiscuous mode [ 23.187503][ T48] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.195578][ T48] device veth1_macvtap left promiscuous mode [ 23.201619][ T48] device veth0_vlan left promiscuous mode [ 23.307065][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 23.315236][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 23.324710][ T363] device veth1_macvtap entered promiscuous mode [ 23.333174][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 23.340797][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 23.349063][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 23.358214][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 23.366535][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 23.387109][ T367] ================================================================== [ 23.395314][ T367] BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 [ 23.401973][ T367] Write of size 8 at addr ffff888111067950 by task syz.2.17/367 [ 23.409690][ T367] [ 23.412016][ T367] CPU: 1 PID: 367 Comm: syz.2.17 Not tainted syzkaller #0 [ 23.419096][ T367] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 23.429131][ T367] Call Trace: [ 23.432402][ T367] __dump_stack+0x21/0x24 [ 23.436786][ T367] dump_stack_lvl+0x1a7/0x208 [ 23.441441][ T367] ? show_regs_print_info+0x18/0x18 [ 23.446680][ T367] ? thaw_kernel_threads+0x220/0x220 [ 23.451957][ T367] ? debug_smp_processor_id+0x17/0x20 [ 23.457321][ T367] print_address_description+0x7f/0x2c0 [ 23.462863][ T367] ? mutex_lock+0x85/0xf0 [ 23.467179][ T367] kasan_report+0x100/0x140 [ 23.471683][ T367] ? mutex_lock+0x85/0xf0 [ 23.475993][ T367] kasan_check_range+0x249/0x2a0 [ 23.480908][ T367] __kasan_check_write+0x14/0x20 [ 23.485848][ T367] mutex_lock+0x85/0xf0 [ 23.490008][ T367] ? mutex_trylock+0xb0/0xb0 [ 23.494591][ T367] ? l2tp_session_put+0xb2/0x1a0 [ 23.499517][ T367] ? l2tp_session_delete+0x3a9/0x4a0 [ 23.504788][ T367] pppol2tp_release+0x178/0x2b0 [ 23.509618][ T367] sock_close+0xb8/0x200 [ 23.513838][ T367] ? sock_mmap+0xa0/0xa0 [ 23.518068][ T367] __fput+0x2dc/0x730 [ 23.522032][ T367] ____fput+0x15/0x20 [ 23.525993][ T367] task_work_run+0x127/0x190 [ 23.530566][ T367] exit_to_user_mode_loop+0xcb/0xe0 [ 23.535744][ T367] exit_to_user_mode_prepare+0x76/0xa0 [ 23.541199][ T367] syscall_exit_to_user_mode+0x1d/0x40 [ 23.546643][ T367] do_syscall_64+0x3d/0x40 [ 23.551038][ T367] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.556933][ T367] RIP: 0033:0x7fc820be7e59 [ 23.561341][ T367] 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 [ 23.581040][ T367] RSP: 002b:00007ffc5eda25e8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 23.589523][ T367] RAX: 0000000000000000 RBX: 00007ffc5eda26d0 RCX: 00007fc820be7e59 [ 23.597485][ T367] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 23.605437][ T367] RBP: 0000000000005b44 R08: 0000000000000001 R09: 0000000000000000 [ 23.613387][ T367] R10: 0000001b32a20000 R11: 0000000000000246 R12: 0000000000000000 [ 23.621340][ T367] R13: 00007fc820e60fac R14: 00007fc820e60fa8 R15: 00007fc820e60fa0 [ 23.629290][ T367] [ 23.631597][ T367] Allocated by task 367: [ 23.635838][ T367] __kasan_kmalloc+0xd4/0x100 [ 23.640491][ T367] __kmalloc+0x19f/0x330 [ 23.644733][ T367] l2tp_session_create+0x39/0xb60 [ 23.649736][ T367] pppol2tp_connect+0xbf5/0x1640 [ 23.654674][ T367] __sys_connect+0x3ce/0x450 [ 23.659246][ T367] __x64_sys_connect+0x7a/0x90 [ 23.663984][ T367] do_syscall_64+0x31/0x40 [ 23.668374][ T367] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.674233][ T367] [ 23.676538][ T367] Freed by task 367: [ 23.680404][ T367] kasan_set_track+0x4a/0x70 [ 23.684967][ T367] kasan_set_free_info+0x23/0x40 [ 23.689875][ T367] ____kasan_slab_free+0x125/0x160 [ 23.694975][ T367] __kasan_slab_free+0x11/0x20 [ 23.699781][ T367] slab_free_freelist_hook+0xc5/0x190 [ 23.705131][ T367] kfree+0xc0/0x270 [ 23.708914][ T367] l2tp_session_put+0xb2/0x1a0 [ 23.713660][ T367] l2tp_session_delete+0x3a9/0x4a0 [ 23.718740][ T367] pppol2tp_release+0x169/0x2b0 [ 23.723567][ T367] sock_close+0xb8/0x200 [ 23.727788][ T367] __fput+0x2dc/0x730 [ 23.731752][ T367] ____fput+0x15/0x20 [ 23.735708][ T367] task_work_run+0x127/0x190 [ 23.740273][ T367] exit_to_user_mode_loop+0xcb/0xe0 [ 23.745443][ T367] exit_to_user_mode_prepare+0x76/0xa0 [ 23.750895][ T367] syscall_exit_to_user_mode+0x1d/0x40 [ 23.756334][ T367] do_syscall_64+0x3d/0x40 [ 23.760723][ T367] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.766583][ T367] [ 23.768885][ T367] The buggy address belongs to the object at ffff888111067800 [ 23.768885][ T367] which belongs to the cache kmalloc-512 of size 512 [ 23.782912][ T367] The buggy address is located 336 bytes inside of [ 23.782912][ T367] 512-byte region [ffff888111067800, ffff888111067a00) [ 23.796153][ T367] The buggy address belongs to the page: [ 23.801779][ T367] page:ffffea0004441900 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x111064 [ 23.811989][ T367] head:ffffea0004441900 order:2 compound_mapcount:0 compound_pincount:0 [ 23.820303][ T367] flags: 0x4000000000010200(slab|head) [ 23.825736][ T367] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 23.834293][ T367] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 23.842845][ T367] page dumped because: kasan: bad access detected [ 23.849233][ T367] page_owner tracks the page as allocated [ 23.854932][ T367] 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 367, ts 23386830715, free_ts 23348955850 [ 23.875306][ T367] prep_new_page+0x176/0x190 [ 23.879873][ T367] get_page_from_freelist+0x225f/0x23f0 [ 23.885411][ T367] __alloc_pages_nodemask+0x29a/0x640 [ 23.890765][ T367] new_slab+0x84/0x3f0 [ 23.894840][ T367] ___slab_alloc+0x2f8/0x4c0 [ 23.899404][ T367] __slab_alloc+0x63/0xa0 [ 23.903723][ T367] kmem_cache_alloc_trace+0x1a8/0x2e0 [ 23.909082][ T367] l2tp_tunnel_create+0x97/0x460 [ 23.914079][ T367] pppol2tp_connect+0x7ef/0x1640 [ 23.918985][ T367] __sys_connect+0x3ce/0x450 [ 23.923551][ T367] __x64_sys_connect+0x7a/0x90 [ 23.928286][ T367] do_syscall_64+0x31/0x40 [ 23.932679][ T367] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.938639][ T367] page last free stack trace: [ 23.943290][ T367] __free_pages_ok+0x80b/0x830 [ 23.948044][ T367] __free_pages+0xd8/0x390 [ 23.952458][ T367] __free_slab+0xcf/0x190 [ 23.956759][ T367] unfreeze_partials+0x150/0x180 [ 23.961664][ T367] put_cpu_partial+0xc1/0x180 [ 23.966327][ T367] __slab_free+0x2c9/0x3a0 [ 23.970715][ T367] ___cache_free+0x10e/0x130 [ 23.975286][ T367] qlink_free+0x50/0x90 [ 23.979414][ T367] qlist_free_all+0x5f/0xb0 [ 23.983888][ T367] kasan_quarantine_reduce+0x14a/0x160 [ 23.989333][ T367] __kasan_slab_alloc+0x2f/0xe0 [ 23.994158][ T367] slab_post_alloc_hook+0x5d/0x2f0 [ 23.999243][ T367] kmem_cache_alloc_trace+0x155/0x2e0 [ 24.004587][ T367] syslog_print+0x127/0x720 [ 24.009081][ T367] do_syslog+0x94c/0x9a0 [ 24.013294][ T367] __x64_sys_syslog+0x7c/0x90 [ 24.017948][ T367] [ 24.020267][ T367] Memory state around the buggy address: [ 24.025870][ T367] ffff888111067800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.033911][ T367] ffff888111067880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.041948][ T367] >ffff888111067900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.049982][ T367] ^ [ 24.056630][ T367] ffff888111067980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.064666][ T367] ffff888111067a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.072709][ T367] ================================================================== [ 24.080740][ T367] Disabling lock debugging due to kernel taint