Warning: Permanently added '10.128.0.31' (ED25519) to the list of known hosts. 2026/07/23 19:15:30 parsed 1 programs 2026/07/23 19:15:30 serving rpc on tcp://46367 [ 20.198130][ T24] audit: type=1400 audit(1784834130.290:64): 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 [ 20.201783][ T24] audit: type=1400 audit(1784834130.290:65): 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 [ 20.205901][ T24] audit: type=1400 audit(1784834130.290:66): 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 [ 20.778379][ T24] audit: type=1400 audit(1784834130.870:67): avc: denied { mounton } for pid=293 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 [ 20.779369][ T293] cgroup: Unknown subsys name 'net' [ 20.801044][ T24] audit: type=1400 audit(1784834130.870:68): avc: denied { mount } for pid=293 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 [ 20.828247][ T24] audit: type=1400 audit(1784834130.900:69): avc: denied { unmount } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 20.848226][ T293] cgroup: Unknown subsys name 'devices' [ 20.941131][ T293] cgroup: Unknown subsys name 'hugetlb' [ 20.946697][ T293] cgroup: Unknown subsys name 'rlimit' [ 21.059371][ T24] audit: type=1400 audit(1784834131.150:70): avc: denied { setattr } for pid=293 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 [ 21.082657][ T24] audit: type=1400 audit(1784834131.160:71): avc: denied { create } for pid=293 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 [ 21.103050][ T24] audit: type=1400 audit(1784834131.160:72): avc: denied { write } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 21.108481][ T297] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 21.123318][ T24] audit: type=1400 audit(1784834131.160:73): avc: denied { read } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 21.160299][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 21.550968][ T300] request_module fs-gadgetfs succeeded, but still no fs? [ 21.561417][ T300] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 21.698459][ T315] bridge0: port 1(bridge_slave_0) entered blocking state [ 21.705716][ T315] bridge0: port 1(bridge_slave_0) entered disabled state [ 21.713144][ T315] device bridge_slave_0 entered promiscuous mode [ 21.721404][ T315] bridge0: port 2(bridge_slave_1) entered blocking state [ 21.728420][ T315] bridge0: port 2(bridge_slave_1) entered disabled state [ 21.735746][ T315] device bridge_slave_1 entered promiscuous mode [ 21.766551][ T315] bridge0: port 2(bridge_slave_1) entered blocking state [ 21.773590][ T315] bridge0: port 2(bridge_slave_1) entered forwarding state [ 21.780850][ T315] bridge0: port 1(bridge_slave_0) entered blocking state [ 21.787857][ T315] bridge0: port 1(bridge_slave_0) entered forwarding state [ 21.803761][ T316] bridge0: port 1(bridge_slave_0) entered disabled state [ 21.811023][ T316] bridge0: port 2(bridge_slave_1) entered disabled state [ 21.818244][ T316] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 21.826233][ T316] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 21.835482][ T316] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 21.843684][ T316] bridge0: port 1(bridge_slave_0) entered blocking state [ 21.850711][ T316] bridge0: port 1(bridge_slave_0) entered forwarding state [ 21.859581][ T316] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 21.867740][ T316] bridge0: port 2(bridge_slave_1) entered blocking state [ 21.874772][ T316] bridge0: port 2(bridge_slave_1) entered forwarding state [ 21.885479][ T316] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 21.894399][ T316] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 21.907099][ T316] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 21.917647][ T316] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 21.925860][ T316] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 21.933394][ T316] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 21.942234][ T315] device veth0_vlan entered promiscuous mode [ 21.951071][ T316] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 21.959856][ T315] device veth1_macvtap entered promiscuous mode [ 21.968135][ T316] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 21.977583][ T316] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/07/23 19:15:32 executed programs: 0 [ 22.555060][ T366] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.562225][ T366] bridge0: port 1(bridge_slave_0) entered disabled state [ 22.569612][ T366] device bridge_slave_0 entered promiscuous mode [ 22.576644][ T366] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.583738][ T366] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.591110][ T366] device bridge_slave_1 entered promiscuous mode [ 22.628574][ T366] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.635609][ T366] bridge0: port 2(bridge_slave_1) entered forwarding state [ 22.642871][ T366] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.649890][ T366] bridge0: port 1(bridge_slave_0) entered forwarding state [ 22.668192][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 22.675852][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 22.683210][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.694907][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 22.703176][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 22.711283][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.718278][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 22.727115][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 22.735393][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 22.743918][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.750974][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 22.761327][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 22.769333][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 22.778463][ T48] device bridge_slave_1 left promiscuous mode [ 22.784677][ T48] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.792270][ T48] device bridge_slave_0 left promiscuous mode [ 22.798355][ T48] bridge0: port 1(bridge_slave_0) entered disabled state [ 22.806209][ T48] device veth1_macvtap left promiscuous mode [ 22.812201][ T48] device veth0_vlan left promiscuous mode [ 22.864042][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 22.872073][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 22.883733][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 22.891983][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 22.903118][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 22.911119][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 22.918986][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 22.926411][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 22.934533][ T366] device veth0_vlan entered promiscuous mode [ 22.943050][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 22.951222][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 22.960079][ T366] device veth1_macvtap entered promiscuous mode [ 22.968178][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 22.976024][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 22.984205][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 22.993229][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 23.001427][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 23.021518][ T370] ================================================================== [ 23.029612][ T370] BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 [ 23.036274][ T370] Write of size 8 at addr ffff8881111d4550 by task syz.2.17/370 [ 23.043868][ T370] [ 23.046179][ T370] CPU: 1 PID: 370 Comm: syz.2.17 Not tainted syzkaller #0 [ 23.053270][ T370] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/13/2026 [ 23.063299][ T370] Call Trace: [ 23.066563][ T370] __dump_stack+0x21/0x24 [ 23.070865][ T370] dump_stack_lvl+0x1a7/0x208 [ 23.075512][ T370] ? show_regs_print_info+0x18/0x18 [ 23.080679][ T370] ? thaw_kernel_threads+0x220/0x220 [ 23.085935][ T370] ? debug_smp_processor_id+0x17/0x20 [ 23.091282][ T370] print_address_description+0x7f/0x2c0 [ 23.096799][ T370] ? mutex_lock+0x85/0xf0 [ 23.101103][ T370] kasan_report+0x100/0x140 [ 23.105578][ T370] ? mutex_lock+0x85/0xf0 [ 23.109887][ T370] kasan_check_range+0x249/0x2a0 [ 23.114796][ T370] __kasan_check_write+0x14/0x20 [ 23.119704][ T370] mutex_lock+0x85/0xf0 [ 23.123831][ T370] ? mutex_trylock+0xb0/0xb0 [ 23.128390][ T370] ? l2tp_session_put+0xb2/0x1a0 [ 23.133299][ T370] ? l2tp_session_delete+0x3a9/0x4a0 [ 23.138555][ T370] pppol2tp_release+0x178/0x2b0 [ 23.143372][ T370] sock_close+0xb8/0x200 [ 23.147579][ T370] ? sock_mmap+0xa0/0xa0 [ 23.151792][ T370] __fput+0x2dc/0x730 [ 23.155747][ T370] ____fput+0x15/0x20 [ 23.159705][ T370] task_work_run+0x127/0x190 [ 23.164269][ T370] exit_to_user_mode_loop+0xcb/0xe0 [ 23.169435][ T370] exit_to_user_mode_prepare+0x76/0xa0 [ 23.174881][ T370] syscall_exit_to_user_mode+0x1d/0x40 [ 23.180307][ T370] do_syscall_64+0x3d/0x40 [ 23.184696][ T370] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.190560][ T370] RIP: 0033:0x7f499e276e99 [ 23.194948][ T370] 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 [ 23.214530][ T370] RSP: 002b:00007fffe89cc3f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 23.222922][ T370] RAX: 0000000000000000 RBX: 00007fffe89cc4e0 RCX: 00007f499e276e99 [ 23.230871][ T370] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 23.238826][ T370] RBP: 00000000000059d8 R08: 0000000000000001 R09: 0000000000000000 [ 23.246776][ T370] R10: 0000001b32d20000 R11: 0000000000000246 R12: 0000000000000000 [ 23.254721][ T370] R13: 00007f499e4fefac R14: 00007f499e4fefa8 R15: 00007f499e4fefa0 [ 23.262670][ T370] [ 23.264971][ T370] Allocated by task 370: [ 23.269186][ T370] __kasan_kmalloc+0xd4/0x100 [ 23.273837][ T370] __kmalloc+0x19f/0x330 [ 23.278050][ T370] l2tp_session_create+0x39/0xb60 [ 23.283044][ T370] pppol2tp_connect+0xbf5/0x1640 [ 23.287949][ T370] __sys_connect+0x3ce/0x450 [ 23.292511][ T370] __x64_sys_connect+0x7a/0x90 [ 23.297245][ T370] do_syscall_64+0x31/0x40 [ 23.301633][ T370] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.307491][ T370] [ 23.309805][ T370] Freed by task 370: [ 23.313681][ T370] kasan_set_track+0x4a/0x70 [ 23.318253][ T370] kasan_set_free_info+0x23/0x40 [ 23.323167][ T370] ____kasan_slab_free+0x125/0x160 [ 23.328247][ T370] __kasan_slab_free+0x11/0x20 [ 23.332982][ T370] slab_free_freelist_hook+0xc5/0x190 [ 23.338325][ T370] kfree+0xc0/0x270 [ 23.342112][ T370] l2tp_session_put+0xb2/0x1a0 [ 23.346852][ T370] l2tp_session_delete+0x3a9/0x4a0 [ 23.351937][ T370] pppol2tp_release+0x169/0x2b0 [ 23.356759][ T370] sock_close+0xb8/0x200 [ 23.360974][ T370] __fput+0x2dc/0x730 [ 23.364942][ T370] ____fput+0x15/0x20 [ 23.368899][ T370] task_work_run+0x127/0x190 [ 23.373466][ T370] exit_to_user_mode_loop+0xcb/0xe0 [ 23.378650][ T370] exit_to_user_mode_prepare+0x76/0xa0 [ 23.384082][ T370] syscall_exit_to_user_mode+0x1d/0x40 [ 23.389510][ T370] do_syscall_64+0x3d/0x40 [ 23.393897][ T370] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.399754][ T370] [ 23.402056][ T370] The buggy address belongs to the object at ffff8881111d4400 [ 23.402056][ T370] which belongs to the cache kmalloc-512 of size 512 [ 23.416090][ T370] The buggy address is located 336 bytes inside of [ 23.416090][ T370] 512-byte region [ffff8881111d4400, ffff8881111d4600) [ 23.429342][ T370] The buggy address belongs to the page: [ 23.434965][ T370] page:ffffea0004447500 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1111d4 [ 23.445172][ T370] head:ffffea0004447500 order:2 compound_mapcount:0 compound_pincount:0 [ 23.453496][ T370] flags: 0x4000000000010200(slab|head) [ 23.458934][ T370] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 23.467491][ T370] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 23.476045][ T370] page dumped because: kasan: bad access detected [ 23.482451][ T370] page_owner tracks the page as allocated [ 23.488157][ T370] 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 370, ts 23021336829, free_ts 22861711413 [ 23.508547][ T370] prep_new_page+0x176/0x190 [ 23.513110][ T370] get_page_from_freelist+0x225f/0x23f0 [ 23.518643][ T370] __alloc_pages_nodemask+0x29a/0x640 [ 23.523990][ T370] new_slab+0x84/0x3f0 [ 23.528035][ T370] ___slab_alloc+0x2f8/0x4c0 [ 23.532602][ T370] __slab_alloc+0x63/0xa0 [ 23.536914][ T370] kmem_cache_alloc_trace+0x1a8/0x2e0 [ 23.542260][ T370] l2tp_tunnel_create+0x97/0x460 [ 23.547168][ T370] pppol2tp_connect+0x7ef/0x1640 [ 23.552078][ T370] __sys_connect+0x3ce/0x450 [ 23.556651][ T370] __x64_sys_connect+0x7a/0x90 [ 23.561391][ T370] do_syscall_64+0x31/0x40 [ 23.565783][ T370] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.571639][ T370] page last free stack trace: [ 23.576295][ T370] __free_pages_ok+0x80b/0x830 [ 23.581031][ T370] __free_pages+0xd8/0x390 [ 23.585425][ T370] __free_slab+0xcf/0x190 [ 23.589726][ T370] unfreeze_partials+0x150/0x180 [ 23.594642][ T370] put_cpu_partial+0xc1/0x180 [ 23.599289][ T370] __slab_free+0x2c9/0x3a0 [ 23.603680][ T370] ___cache_free+0x10e/0x130 [ 23.608247][ T370] qlink_free+0x50/0x90 [ 23.612373][ T370] qlist_free_all+0x5f/0xb0 [ 23.616845][ T370] kasan_quarantine_reduce+0x14a/0x160 [ 23.622274][ T370] __kasan_slab_alloc+0x2f/0xe0 [ 23.627111][ T370] slab_post_alloc_hook+0x5d/0x2f0 [ 23.632191][ T370] kmem_cache_alloc+0x15a/0x2d0 [ 23.637019][ T370] __alloc_skb+0x9e/0x520 [ 23.641326][ T370] rtmsg_ifa+0xfa/0x1d0 [ 23.645458][ T370] __inet_del_ifa+0x80b/0xd90 [ 23.650101][ T370] [ 23.652417][ T370] Memory state around the buggy address: [ 23.658047][ T370] ffff8881111d4400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.666084][ T370] ffff8881111d4480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.674119][ T370] >ffff8881111d4500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.682148][ T370] ^ [ 23.688793][ T370] ffff8881111d4580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.696836][ T370] ffff8881111d4600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.704872][ T370] ================================================================== [ 23.713028][ T370] Disabling lock debugging due to kernel taint