Warning: Permanently added '10.128.0.198' (ED25519) to the list of known hosts. 2026/07/07 20:07:00 parsed 1 programs 2026/07/07 20:07:00 serving rpc on tcp://36295 [ 23.633255][ T30] audit: type=1400 audit(1783454820.182:64): 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 [ 23.654510][ T30] audit: type=1400 audit(1783454820.182:65): 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 [ 24.660552][ T30] audit: type=1400 audit(1783454821.212:66): avc: denied { mounton } for pid=300 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 [ 24.664099][ T300] cgroup: Unknown subsys name 'net' [ 24.683723][ T30] audit: type=1400 audit(1783454821.212:67): avc: denied { mount } for pid=300 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 [ 24.710783][ T30] audit: type=1400 audit(1783454821.242:68): avc: denied { unmount } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 24.711183][ T300] cgroup: Unknown subsys name 'devices' [ 24.858017][ T300] cgroup: Unknown subsys name 'hugetlb' [ 24.863689][ T300] cgroup: Unknown subsys name 'rlimit' [ 25.013182][ T30] audit: type=1400 audit(1783454821.562:69): avc: denied { setattr } for pid=300 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 [ 25.036414][ T30] audit: type=1400 audit(1783454821.562:70): avc: denied { create } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.056905][ T30] audit: type=1400 audit(1783454821.562:71): avc: denied { write } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.077602][ T30] audit: type=1400 audit(1783454821.562:72): avc: denied { read } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.087415][ T303] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). Setting up swapspace version 1, size = 127995904 bytes [ 25.098659][ T30] audit: type=1400 audit(1783454821.572:73): avc: denied { mounton } for pid=300 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 [ 25.154987][ T300] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 25.578993][ T305] request_module fs-gadgetfs succeeded, but still no fs? [ 25.881620][ T319] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.889029][ T319] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.897010][ T319] device bridge_slave_0 entered promiscuous mode [ 25.904000][ T319] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.911101][ T319] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.918509][ T319] device bridge_slave_1 entered promiscuous mode [ 25.962781][ T319] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.969870][ T319] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.977322][ T319] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.984596][ T319] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.005470][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.013043][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.020843][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 26.028569][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.038292][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.046594][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.053724][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.062557][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.071078][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.078416][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.091509][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.101018][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.118062][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.131132][ T319] device veth0_vlan entered promiscuous mode [ 26.138204][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.146419][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.153808][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.165592][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.175011][ T319] device veth1_macvtap entered promiscuous mode [ 26.186452][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.196740][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.249569][ T319] syz-executor (319) used greatest stack depth: 21536 bytes left 2026/07/07 20:07:03 executed programs: 0 [ 26.893665][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.900808][ T368] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.908304][ T368] device bridge_slave_0 entered promiscuous mode [ 26.915106][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.922270][ T368] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.929967][ T368] device bridge_slave_1 entered promiscuous mode [ 26.972865][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.980075][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.987501][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.994808][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.013828][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.021228][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.029061][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 27.036553][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.045890][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.054227][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.061293][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.070611][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.078914][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.086091][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.098834][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.108680][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.130958][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.142846][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.151188][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.158878][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.168544][ T368] device veth0_vlan entered promiscuous mode [ 27.185364][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.194828][ T368] device veth1_macvtap entered promiscuous mode [ 27.204284][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.215706][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.246182][ T372] ================================================================== [ 27.254296][ T372] BUG: KASAN: use-after-free in mutex_lock+0x8e/0x1c0 [ 27.261109][ T372] Write of size 8 at addr ffff888122d4e950 by task syz.2.17/372 [ 27.268743][ T372] [ 27.271161][ T372] CPU: 0 PID: 372 Comm: syz.2.17 Not tainted syzkaller #0 [ 27.278267][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 27.288331][ T372] Call Trace: [ 27.291615][ T372] [ 27.294548][ T372] __dump_stack+0x21/0x30 [ 27.298881][ T372] dump_stack_lvl+0x110/0x170 [ 27.303564][ T372] ? show_regs_print_info+0x20/0x20 [ 27.308764][ T372] ? load_image+0x3f0/0x3f0 [ 27.313267][ T372] print_address_description+0x7f/0x2c0 [ 27.318814][ T372] ? mutex_lock+0x8e/0x1c0 [ 27.323250][ T372] kasan_report+0x10f/0x150 [ 27.327840][ T372] ? mutex_lock+0x8e/0x1c0 [ 27.332254][ T372] kasan_check_range+0x249/0x2a0 [ 27.337216][ T372] __kasan_check_write+0x14/0x20 [ 27.342152][ T372] mutex_lock+0x8e/0x1c0 [ 27.346490][ T372] ? wait_for_completion_killable_timeout+0x10/0x10 [ 27.353137][ T372] ? l2tp_session_put+0xaf/0x1a0 [ 27.358162][ T372] ? l2tp_session_delete+0x3a9/0x4a0 [ 27.363459][ T372] pppol2tp_release+0x178/0x2b0 [ 27.368354][ T372] sock_close+0xb8/0x200 [ 27.372625][ T372] ? sock_mmap+0xa0/0xa0 [ 27.376960][ T372] __fput+0x22b/0x900 [ 27.381058][ T372] ____fput+0x15/0x20 [ 27.385054][ T372] task_work_run+0x127/0x190 [ 27.389746][ T372] exit_to_user_mode_loop+0xd0/0xe0 [ 27.394959][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 27.400423][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 27.405905][ T372] do_syscall_64+0x58/0xa0 [ 27.410365][ T372] ? clear_bhb_loop+0x50/0xa0 [ 27.415303][ T372] ? clear_bhb_loop+0x50/0xa0 [ 27.420684][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 27.426676][ T372] RIP: 0033:0x7efc20ac8e59 [ 27.431108][ T372] 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 [ 27.450731][ T372] RSP: 002b:00007ffd97447ea8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 27.459152][ T372] RAX: 0000000000000000 RBX: 00007ffd97447f90 RCX: 00007efc20ac8e59 [ 27.467130][ T372] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 27.475100][ T372] RBP: 0000000000006a48 R08: 0000000000000001 R09: 0000000000000000 [ 27.483086][ T372] R10: 0000001b32f20000 R11: 0000000000000246 R12: 0000000000000000 [ 27.491074][ T372] R13: 00007efc20d50fac R14: 00007efc20d50fa8 R15: 00007efc20d50fa0 [ 27.499055][ T372] [ 27.502086][ T372] [ 27.504407][ T372] Allocated by task 372: [ 27.508727][ T372] __kasan_kmalloc+0xd4/0x100 [ 27.513418][ T372] __kmalloc+0x13d/0x2c0 [ 27.517663][ T372] l2tp_session_create+0x39/0xb60 [ 27.522693][ T372] pppol2tp_connect+0xbf5/0x1640 [ 27.527710][ T372] __sys_connect+0x3cb/0x450 [ 27.532341][ T372] __x64_sys_connect+0x7a/0x90 [ 27.537110][ T372] x64_sys_call+0x7c/0x9a0 [ 27.541631][ T372] do_syscall_64+0x4c/0xa0 [ 27.546057][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 27.551992][ T372] [ 27.554322][ T372] Freed by task 372: [ 27.558232][ T372] kasan_set_track+0x4a/0x70 [ 27.562835][ T372] kasan_set_free_info+0x23/0x40 [ 27.567777][ T372] ____kasan_slab_free+0x125/0x160 [ 27.572893][ T372] __kasan_slab_free+0x11/0x20 [ 27.577661][ T372] slab_free_freelist_hook+0xc2/0x190 [ 27.583054][ T372] kfree+0xc4/0x270 [ 27.586856][ T372] l2tp_session_put+0xaf/0x1a0 [ 27.591626][ T372] l2tp_session_delete+0x3a9/0x4a0 [ 27.596739][ T372] pppol2tp_release+0x169/0x2b0 [ 27.601586][ T372] sock_close+0xb8/0x200 [ 27.605842][ T372] __fput+0x22b/0x900 [ 27.609885][ T372] ____fput+0x15/0x20 [ 27.613873][ T372] task_work_run+0x127/0x190 [ 27.618463][ T372] exit_to_user_mode_loop+0xd0/0xe0 [ 27.623666][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 27.629129][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 27.634695][ T372] do_syscall_64+0x58/0xa0 [ 27.639212][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 27.645138][ T372] [ 27.647469][ T372] The buggy address belongs to the object at ffff888122d4e800 [ 27.647469][ T372] which belongs to the cache kmalloc-512 of size 512 [ 27.661833][ T372] The buggy address is located 336 bytes inside of [ 27.661833][ T372] 512-byte region [ffff888122d4e800, ffff888122d4ea00) [ 27.675142][ T372] The buggy address belongs to the page: [ 27.680779][ T372] page:ffffea00048b5300 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x122d4c [ 27.691041][ T372] head:ffffea00048b5300 order:2 compound_mapcount:0 compound_pincount:0 [ 27.699397][ T372] flags: 0x4000000000010200(slab|head|zone=1) [ 27.705509][ T372] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 27.714108][ T372] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 27.722854][ T372] page dumped because: kasan: bad access detected [ 27.729277][ T372] page_owner tracks the page as allocated [ 27.735176][ T372] 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 368, ts 27235612307, free_ts 26618524104 [ 27.755780][ T372] post_alloc_hook+0x192/0x1b0 [ 27.760572][ T372] prep_new_page+0x1c/0x110 [ 27.765090][ T372] get_page_from_freelist+0x2c3a/0x2cd0 [ 27.770650][ T372] __alloc_pages+0x1a2/0x460 [ 27.775280][ T372] new_slab+0xa0/0x4d0 [ 27.779465][ T372] ___slab_alloc+0x3ac/0x840 [ 27.784071][ T372] __slab_alloc+0x49/0x90 [ 27.788407][ T372] kmem_cache_alloc_trace+0x146/0x270 [ 27.793785][ T372] rtnl_newlink+0x17f/0x1900 [ 27.798557][ T372] rtnetlink_rcv_msg+0x9fd/0xcb0 [ 27.803709][ T372] netlink_rcv_skb+0x1e9/0x430 [ 27.808479][ T372] rtnetlink_rcv+0x1c/0x20 [ 27.812897][ T372] netlink_unicast+0x86c/0xa30 [ 27.817662][ T372] netlink_sendmsg+0x879/0xb80 [ 27.822438][ T372] __sys_sendto+0x46d/0x620 [ 27.826940][ T372] __x64_sys_sendto+0xe5/0x100 [ 27.831714][ T372] page last free stack trace: [ 27.836523][ T372] free_unref_page_prepare+0x5fa/0x600 [ 27.841982][ T372] free_unref_page+0xae/0x540 [ 27.846664][ T372] __free_pages+0x6c/0x100 [ 27.851119][ T372] __vunmap+0x801/0x980 [ 27.855283][ T372] vfree+0x8b/0xc0 [ 27.859005][ T372] kcov_close+0x2b/0x50 [ 27.863164][ T372] __fput+0x22b/0x900 [ 27.867151][ T372] ____fput+0x15/0x20 [ 27.871133][ T372] task_work_run+0x127/0x190 [ 27.875723][ T372] do_exit+0xb70/0x29a0 [ 27.879878][ T372] do_group_exit+0x149/0x310 [ 27.884527][ T372] get_signal+0x64f/0x1430 [ 27.889062][ T372] arch_do_signal_or_restart+0xe2/0x1100 [ 27.895218][ T372] exit_to_user_mode_loop+0xa7/0xe0 [ 27.900595][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 27.906068][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 27.911636][ T372] [ 27.913956][ T372] Memory state around the buggy address: [ 27.919598][ T372] ffff888122d4e800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.927693][ T372] ffff888122d4e880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.935771][ T372] >ffff888122d4e900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.943913][ T372] ^ [ 27.950672][ T372] ffff888122d4e980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.958750][ T372] ffff888122d4ea00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.966979][ T372] ================================================================== [ 27.975041][ T372] Disabling lock debugging due to kernel taint