Warning: Permanently added '10.128.0.245' (ED25519) to the list of known hosts. 2026/06/22 21:37:39 parsed 1 programs 2026/06/22 21:37:39 serving rpc on tcp://32961 [ 26.502359][ T24] audit: type=1400 audit(1782164259.460:64): 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 [ 26.523188][ T24] audit: type=1400 audit(1782164259.460:65): 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 [ 26.542719][ T24] audit: type=1400 audit(1782164259.460:66): 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 [ 27.431942][ T24] audit: type=1400 audit(1782164260.390:67): 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 [ 27.435273][ T293] cgroup: Unknown subsys name 'net' [ 27.454710][ T24] audit: type=1400 audit(1782164260.390:68): 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 [ 27.481928][ T24] audit: type=1400 audit(1782164260.420:69): 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 [ 27.482351][ T293] cgroup: Unknown subsys name 'devices' [ 27.627034][ T293] cgroup: Unknown subsys name 'hugetlb' [ 27.632745][ T293] cgroup: Unknown subsys name 'rlimit' [ 27.780168][ T24] audit: type=1400 audit(1782164260.740:70): 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 [ 27.803407][ T24] audit: type=1400 audit(1782164260.740:71): 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 [ 27.823877][ T24] audit: type=1400 audit(1782164260.740:72): 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 [ 27.840441][ T297] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 27.844446][ T24] audit: type=1400 audit(1782164260.740:73): 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 [ 27.910899][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 28.331527][ T301] request_module fs-gadgetfs succeeded, but still no fs? [ 28.342630][ T301] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 28.417614][ T306] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.424753][ T306] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.432456][ T306] device bridge_slave_0 entered promiscuous mode [ 28.439541][ T306] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.446699][ T306] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.454157][ T306] device bridge_slave_1 entered promiscuous mode [ 28.497145][ T306] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.504509][ T306] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.511831][ T306] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.518886][ T306] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.538162][ T307] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.545604][ T307] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.552885][ T307] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 28.560756][ T307] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.570808][ T307] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.578977][ T307] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.586031][ T307] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.594642][ T307] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.602983][ T307] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.610040][ T307] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.622642][ T307] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 28.631761][ T307] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 28.645123][ T307] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 28.657386][ T307] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 28.665674][ T307] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 28.673056][ T307] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 28.681921][ T306] device veth0_vlan entered promiscuous mode [ 28.691876][ T307] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 28.700895][ T306] device veth1_macvtap entered promiscuous mode [ 28.711267][ T307] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.721308][ T307] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 29.416314][ T7] device bridge_slave_1 left promiscuous mode [ 29.422540][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.430359][ T7] device bridge_slave_0 left promiscuous mode [ 29.436608][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.445134][ T7] device veth1_macvtap left promiscuous mode [ 29.451493][ T7] device veth0_vlan left promiscuous mode 2026/06/22 21:37:42 executed programs: 0 [ 29.587274][ T364] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.594309][ T364] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.601740][ T364] device bridge_slave_0 entered promiscuous mode [ 29.608648][ T364] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.615730][ T364] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.623038][ T364] device bridge_slave_1 entered promiscuous mode [ 29.662444][ T364] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.669496][ T364] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.676909][ T364] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.683972][ T364] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.701085][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 29.708803][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.716954][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.725749][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 29.733886][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.740936][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.749484][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.757809][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.764818][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.776978][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 29.786089][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 29.799135][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 29.811591][ T364] device veth0_vlan entered promiscuous mode [ 29.818639][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 29.826760][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 29.834147][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 29.847279][ T364] device veth1_macvtap entered promiscuous mode [ 29.854118][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 29.865080][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 29.875925][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 29.901101][ T376] ================================================================== [ 29.909230][ T376] BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 [ 29.915902][ T376] Write of size 8 at addr ffff888111479950 by task syz.2.17/376 [ 29.923513][ T376] [ 29.925840][ T376] CPU: 0 PID: 376 Comm: syz.2.17 Not tainted syzkaller #0 [ 29.933117][ T376] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 29.943170][ T376] Call Trace: [ 29.946564][ T376] __dump_stack+0x21/0x24 [ 29.950900][ T376] dump_stack_lvl+0x1a7/0x208 [ 29.955581][ T376] ? show_regs_print_info+0x18/0x18 [ 29.960783][ T376] ? thaw_kernel_threads+0x220/0x220 [ 29.966057][ T376] ? debug_smp_processor_id+0x17/0x20 [ 29.971415][ T376] print_address_description+0x7f/0x2c0 [ 29.976951][ T376] ? mutex_lock+0x85/0xf0 [ 29.981269][ T376] kasan_report+0x100/0x140 [ 29.985769][ T376] ? mutex_lock+0x85/0xf0 [ 29.990098][ T376] kasan_check_range+0x249/0x2a0 [ 29.995019][ T376] __kasan_check_write+0x14/0x20 [ 29.999949][ T376] mutex_lock+0x85/0xf0 [ 30.004090][ T376] ? mutex_trylock+0xb0/0xb0 [ 30.008679][ T376] ? l2tp_session_put+0xb2/0x1a0 [ 30.013685][ T376] ? l2tp_session_delete+0x3a9/0x4a0 [ 30.018966][ T376] pppol2tp_release+0x178/0x2b0 [ 30.023809][ T376] sock_close+0xb8/0x200 [ 30.028040][ T376] ? sock_mmap+0xa0/0xa0 [ 30.032272][ T376] __fput+0x2dc/0x730 [ 30.036243][ T376] ____fput+0x15/0x20 [ 30.040210][ T376] task_work_run+0x127/0x190 [ 30.044785][ T376] exit_to_user_mode_loop+0xcb/0xe0 [ 30.049971][ T376] exit_to_user_mode_prepare+0x76/0xa0 [ 30.055417][ T376] syscall_exit_to_user_mode+0x1d/0x40 [ 30.060859][ T376] do_syscall_64+0x3d/0x40 [ 30.065262][ T376] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 30.071149][ T376] RIP: 0033:0x7f647f2b3e59 [ 30.075559][ T376] 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 [ 30.095158][ T376] RSP: 002b:00007ffc4732e868 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 30.103586][ T376] RAX: 0000000000000000 RBX: 00007ffc4732e950 RCX: 00007f647f2b3e59 [ 30.111549][ T376] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 30.119507][ T376] RBP: 00000000000074b2 R08: 0000000000000001 R09: 0000000000000000 [ 30.127466][ T376] R10: 0000001b32b20000 R11: 0000000000000246 R12: 0000000000000000 [ 30.135423][ T376] R13: 00007f647f52cfac R14: 00007f647f52cfa8 R15: 00007f647f52cfa0 [ 30.143380][ T376] [ 30.145703][ T376] Allocated by task 376: [ 30.149949][ T376] __kasan_kmalloc+0xd4/0x100 [ 30.154612][ T376] __kmalloc+0x19f/0x330 [ 30.158840][ T376] l2tp_session_create+0x39/0xb60 [ 30.163851][ T376] pppol2tp_connect+0xbf5/0x1640 [ 30.168775][ T376] __sys_connect+0x3ce/0x450 [ 30.173347][ T376] __x64_sys_connect+0x7a/0x90 [ 30.178095][ T376] do_syscall_64+0x31/0x40 [ 30.182494][ T376] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 30.188366][ T376] [ 30.190687][ T376] Freed by task 376: [ 30.194559][ T376] kasan_set_track+0x4a/0x70 [ 30.199278][ T376] kasan_set_free_info+0x23/0x40 [ 30.204199][ T376] ____kasan_slab_free+0x125/0x160 [ 30.209297][ T376] __kasan_slab_free+0x11/0x20 [ 30.214039][ T376] slab_free_freelist_hook+0xc5/0x190 [ 30.219391][ T376] kfree+0xc0/0x270 [ 30.223182][ T376] l2tp_session_put+0xb2/0x1a0 [ 30.227932][ T376] l2tp_session_delete+0x3a9/0x4a0 [ 30.233023][ T376] pppol2tp_release+0x169/0x2b0 [ 30.237855][ T376] sock_close+0xb8/0x200 [ 30.242080][ T376] __fput+0x2dc/0x730 [ 30.246045][ T376] ____fput+0x15/0x20 [ 30.250012][ T376] task_work_run+0x127/0x190 [ 30.254588][ T376] exit_to_user_mode_loop+0xcb/0xe0 [ 30.259769][ T376] exit_to_user_mode_prepare+0x76/0xa0 [ 30.265211][ T376] syscall_exit_to_user_mode+0x1d/0x40 [ 30.270651][ T376] do_syscall_64+0x3d/0x40 [ 30.275055][ T376] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 30.280930][ T376] [ 30.283254][ T376] The buggy address belongs to the object at ffff888111479800 [ 30.283254][ T376] which belongs to the cache kmalloc-512 of size 512 [ 30.297295][ T376] The buggy address is located 336 bytes inside of [ 30.297295][ T376] 512-byte region [ffff888111479800, ffff888111479a00) [ 30.310578][ T376] The buggy address belongs to the page: [ 30.316212][ T376] page:ffffea0004451e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x111478 [ 30.326433][ T376] head:ffffea0004451e00 order:2 compound_mapcount:0 compound_pincount:0 [ 30.334744][ T376] flags: 0x4000000000010200(slab|head) [ 30.340196][ T376] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 30.348767][ T376] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 30.357431][ T376] page dumped because: kasan: bad access detected [ 30.363955][ T376] page_owner tracks the page as allocated [ 30.369665][ T376] 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 376, ts 29900620164, free_ts 29895447842 [ 30.390046][ T376] prep_new_page+0x176/0x190 [ 30.394620][ T376] get_page_from_freelist+0x225f/0x23f0 [ 30.400147][ T376] __alloc_pages_nodemask+0x29a/0x640 [ 30.405498][ T376] new_slab+0x84/0x3f0 [ 30.409552][ T376] ___slab_alloc+0x2f8/0x4c0 [ 30.414123][ T376] __slab_alloc+0x63/0xa0 [ 30.418519][ T376] kmem_cache_alloc_trace+0x1a8/0x2e0 [ 30.423882][ T376] l2tp_tunnel_create+0x97/0x460 [ 30.428810][ T376] pppol2tp_connect+0x7ef/0x1640 [ 30.433730][ T376] __sys_connect+0x3ce/0x450 [ 30.438300][ T376] __x64_sys_connect+0x7a/0x90 [ 30.443048][ T376] do_syscall_64+0x31/0x40 [ 30.447446][ T376] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 30.453313][ T376] page last free stack trace: [ 30.457970][ T376] __free_pages_ok+0x80b/0x830 [ 30.462716][ T376] __free_pages+0xd8/0x390 [ 30.467127][ T376] __free_slab+0xcf/0x190 [ 30.471455][ T376] unfreeze_partials+0x150/0x180 [ 30.476377][ T376] put_cpu_partial+0xc1/0x180 [ 30.481035][ T376] __slab_free+0x2c9/0x3a0 [ 30.485447][ T376] ___cache_free+0x10e/0x130 [ 30.490049][ T376] qlink_free+0x50/0x90 [ 30.494186][ T376] qlist_free_all+0x5f/0xb0 [ 30.498670][ T376] kasan_quarantine_reduce+0x14a/0x160 [ 30.504128][ T376] __kasan_slab_alloc+0x2f/0xe0 [ 30.508967][ T376] slab_post_alloc_hook+0x5d/0x2f0 [ 30.514061][ T376] __kmalloc+0x17b/0x330 [ 30.518288][ T376] cgroup_mkdir+0x2b5/0x16d0 [ 30.522863][ T376] kernfs_iop_mkdir+0x1a3/0x2b0 [ 30.527700][ T376] vfs_mkdir+0x42c/0x600 [ 30.531921][ T376] [ 30.534232][ T376] Memory state around the buggy address: [ 30.539847][ T376] ffff888111479800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.547889][ T376] ffff888111479880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.555936][ T376] >ffff888111479900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.563993][ T376] ^ [ 30.570650][ T376] ffff888111479980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.578698][ T376] ffff888111479a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.586740][ T376] ================================================================== [ 30.594778][ T376] Disabling lock debugging due to kernel taint