Warning: Permanently added '10.128.1.130' (ED25519) to the list of known hosts. 2026/07/20 04:24:43 parsed 1 programs 2026/07/20 04:24:43 serving rpc on tcp://39575 [ 21.771550][ T24] audit: type=1400 audit(1784521483.550:64): 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 [ 21.793150][ T24] audit: type=1400 audit(1784521483.550:65): 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 [ 21.812754][ T24] audit: type=1400 audit(1784521483.550:66): 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 [ 22.757723][ T24] audit: type=1400 audit(1784521484.530:67): 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 [ 22.761675][ T293] cgroup: Unknown subsys name 'net' [ 22.780719][ T24] audit: type=1400 audit(1784521484.530:68): 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 [ 22.808692][ T24] audit: type=1400 audit(1784521484.570:69): 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 [ 22.809319][ T293] cgroup: Unknown subsys name 'devices' [ 22.920928][ T293] cgroup: Unknown subsys name 'hugetlb' [ 22.926556][ T293] cgroup: Unknown subsys name 'rlimit' [ 23.075354][ T24] audit: type=1400 audit(1784521484.850:70): 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 [ 23.098574][ T24] audit: type=1400 audit(1784521484.850:71): 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 [ 23.118994][ T24] audit: type=1400 audit(1784521484.850:72): 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 [ 23.139443][ T24] audit: type=1400 audit(1784521484.850:73): 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 [ 23.154038][ T298] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 23.200305][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 23.650366][ T304] request_module fs-gadgetfs succeeded, but still no fs? [ 23.660952][ T304] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 24.180913][ T347] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.188005][ T347] bridge0: port 1(bridge_slave_0) entered disabled state [ 24.195675][ T347] device bridge_slave_0 entered promiscuous mode [ 24.202843][ T347] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.210088][ T347] bridge0: port 2(bridge_slave_1) entered disabled state [ 24.217533][ T347] device bridge_slave_1 entered promiscuous mode [ 24.257275][ T347] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.264432][ T347] bridge0: port 2(bridge_slave_1) entered forwarding state [ 24.271990][ T347] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.279068][ T347] bridge0: port 1(bridge_slave_0) entered forwarding state [ 24.297272][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 24.304904][ T313] bridge0: port 1(bridge_slave_0) entered disabled state [ 24.312750][ T313] bridge0: port 2(bridge_slave_1) entered disabled state [ 24.322061][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 24.330358][ T313] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.337391][ T313] bridge0: port 1(bridge_slave_0) entered forwarding state [ 24.345965][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 24.354470][ T313] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.361534][ T313] bridge0: port 2(bridge_slave_1) entered forwarding state [ 24.373583][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 24.382932][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 24.396375][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 24.407600][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 24.416114][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 24.423811][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 24.432517][ T347] device veth0_vlan entered promiscuous mode [ 24.442514][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 24.451722][ T347] device veth1_macvtap entered promiscuous mode [ 24.461191][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 24.470969][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/07/20 04:24:46 executed programs: 0 [ 24.833398][ T365] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.840716][ T365] bridge0: port 1(bridge_slave_0) entered disabled state [ 24.848051][ T365] device bridge_slave_0 entered promiscuous mode [ 24.855264][ T365] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.862475][ T365] bridge0: port 2(bridge_slave_1) entered disabled state [ 24.869989][ T365] device bridge_slave_1 entered promiscuous mode [ 24.916740][ T365] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.923815][ T365] bridge0: port 2(bridge_slave_1) entered forwarding state [ 24.931126][ T365] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.938165][ T365] bridge0: port 1(bridge_slave_0) entered forwarding state [ 24.955954][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 24.963757][ T313] bridge0: port 1(bridge_slave_0) entered disabled state [ 24.971101][ T313] bridge0: port 2(bridge_slave_1) entered disabled state [ 24.987343][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 24.995758][ T313] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.002850][ T313] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.011955][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.020202][ T313] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.027240][ T313] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.050977][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.059635][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.074811][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.083696][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.093355][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.101506][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.109413][ T365] device veth0_vlan entered promiscuous mode [ 25.120614][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.130212][ T365] device veth1_macvtap entered promiscuous mode [ 25.141258][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.151589][ T313] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 25.174814][ T406] ================================================================== [ 25.182961][ T406] BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 [ 25.189667][ T406] Write of size 8 at addr ffff888111a82d50 by task syz.2.17/406 [ 25.197288][ T406] [ 25.199635][ T406] CPU: 1 PID: 406 Comm: syz.2.17 Not tainted syzkaller #0 [ 25.206739][ T406] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 25.216883][ T406] Call Trace: [ 25.220190][ T406] __dump_stack+0x21/0x24 [ 25.224535][ T406] dump_stack_lvl+0x1a7/0x208 [ 25.229217][ T406] ? show_regs_print_info+0x18/0x18 [ 25.234413][ T406] ? thaw_kernel_threads+0x220/0x220 [ 25.239986][ T406] ? debug_smp_processor_id+0x17/0x20 [ 25.245420][ T406] print_address_description+0x7f/0x2c0 [ 25.250964][ T406] ? mutex_lock+0x85/0xf0 [ 25.255293][ T406] kasan_report+0x100/0x140 [ 25.259798][ T406] ? mutex_lock+0x85/0xf0 [ 25.264154][ T406] kasan_check_range+0x249/0x2a0 [ 25.269102][ T406] __kasan_check_write+0x14/0x20 [ 25.274038][ T406] mutex_lock+0x85/0xf0 [ 25.278204][ T406] ? mutex_trylock+0xb0/0xb0 [ 25.282800][ T406] ? l2tp_session_put+0xb2/0x1a0 [ 25.287732][ T406] ? l2tp_session_delete+0x3a9/0x4a0 [ 25.293009][ T406] pppol2tp_release+0x178/0x2b0 [ 25.297855][ T406] sock_close+0xb8/0x200 [ 25.302203][ T406] ? sock_mmap+0xa0/0xa0 [ 25.306444][ T406] __fput+0x2dc/0x730 [ 25.310427][ T406] ____fput+0x15/0x20 [ 25.314469][ T406] task_work_run+0x127/0x190 [ 25.319072][ T406] exit_to_user_mode_loop+0xcb/0xe0 [ 25.324310][ T406] exit_to_user_mode_prepare+0x76/0xa0 [ 25.329783][ T406] syscall_exit_to_user_mode+0x1d/0x40 [ 25.335248][ T406] do_syscall_64+0x3d/0x40 [ 25.339668][ T406] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 25.345566][ T406] RIP: 0033:0x7f23ab340e99 [ 25.349999][ T406] 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 [ 25.369644][ T406] RSP: 002b:00007fff3681e618 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 25.378098][ T406] RAX: 0000000000000000 RBX: 00007fff3681e700 RCX: 00007f23ab340e99 [ 25.386171][ T406] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 25.394168][ T406] RBP: 0000000000006238 R08: 0000000000000001 R09: 0000000000000000 [ 25.402285][ T406] R10: 0000001b32c20000 R11: 0000000000000246 R12: 0000000000000000 [ 25.410279][ T406] R13: 00007f23ab5c8fac R14: 00007f23ab5c8fa8 R15: 00007f23ab5c8fa0 [ 25.418262][ T406] [ 25.420609][ T406] Allocated by task 406: [ 25.424865][ T406] __kasan_kmalloc+0xd4/0x100 [ 25.429555][ T406] __kmalloc+0x19f/0x330 [ 25.433802][ T406] l2tp_session_create+0x39/0xb60 [ 25.438829][ T406] pppol2tp_connect+0xbf5/0x1640 [ 25.443771][ T406] __sys_connect+0x3ce/0x450 [ 25.448374][ T406] __x64_sys_connect+0x7a/0x90 [ 25.453145][ T406] do_syscall_64+0x31/0x40 [ 25.457568][ T406] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 25.463457][ T406] [ 25.465791][ T406] Freed by task 406: [ 25.469694][ T406] kasan_set_track+0x4a/0x70 [ 25.474317][ T406] kasan_set_free_info+0x23/0x40 [ 25.479263][ T406] ____kasan_slab_free+0x125/0x160 [ 25.484378][ T406] __kasan_slab_free+0x11/0x20 [ 25.489158][ T406] slab_free_freelist_hook+0xc5/0x190 [ 25.494655][ T406] kfree+0xc0/0x270 [ 25.498485][ T406] l2tp_session_put+0xb2/0x1a0 [ 25.503259][ T406] l2tp_session_delete+0x3a9/0x4a0 [ 25.508382][ T406] pppol2tp_release+0x169/0x2b0 [ 25.513244][ T406] sock_close+0xb8/0x200 [ 25.517589][ T406] __fput+0x2dc/0x730 [ 25.521598][ T406] ____fput+0x15/0x20 [ 25.525598][ T406] task_work_run+0x127/0x190 [ 25.530199][ T406] exit_to_user_mode_loop+0xcb/0xe0 [ 25.535401][ T406] exit_to_user_mode_prepare+0x76/0xa0 [ 25.540869][ T406] syscall_exit_to_user_mode+0x1d/0x40 [ 25.546334][ T406] do_syscall_64+0x3d/0x40 [ 25.550756][ T406] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 25.556655][ T406] [ 25.559007][ T406] The buggy address belongs to the object at ffff888111a82c00 [ 25.559007][ T406] which belongs to the cache kmalloc-512 of size 512 [ 25.573077][ T406] The buggy address is located 336 bytes inside of [ 25.573077][ T406] 512-byte region [ffff888111a82c00, ffff888111a82e00) [ 25.586441][ T406] The buggy address belongs to the page: [ 25.592098][ T406] page:ffffea000446a000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x111a80 [ 25.602343][ T406] head:ffffea000446a000 order:2 compound_mapcount:0 compound_pincount:0 [ 25.610677][ T406] flags: 0x4000000000010200(slab|head) [ 25.616144][ T406] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 25.624845][ T406] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 25.633450][ T406] page dumped because: kasan: bad access detected [ 25.640050][ T406] page_owner tracks the page as allocated [ 25.645801][ T406] 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 406, ts 25174366049, free_ts 25172195260 [ 25.666295][ T406] prep_new_page+0x176/0x190 [ 25.670893][ T406] get_page_from_freelist+0x225f/0x23f0 [ 25.676471][ T406] __alloc_pages_nodemask+0x29a/0x640 [ 25.681850][ T406] new_slab+0x84/0x3f0 [ 25.685927][ T406] ___slab_alloc+0x2f8/0x4c0 [ 25.690679][ T406] __slab_alloc+0x63/0xa0 [ 25.695025][ T406] __kmalloc+0x1f9/0x330 [ 25.699278][ T406] l2tp_session_create+0x39/0xb60 [ 25.704316][ T406] pppol2tp_connect+0xbf5/0x1640 [ 25.709264][ T406] __sys_connect+0x3ce/0x450 [ 25.713861][ T406] __x64_sys_connect+0x7a/0x90 [ 25.718628][ T406] do_syscall_64+0x31/0x40 [ 25.723046][ T406] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 25.728965][ T406] page last free stack trace: [ 25.733653][ T406] __free_pages_ok+0x80b/0x830 [ 25.738514][ T406] __free_pages+0xd8/0x390 [ 25.742944][ T406] __free_slab+0xcf/0x190 [ 25.747276][ T406] unfreeze_partials+0x150/0x180 [ 25.752311][ T406] put_cpu_partial+0xc1/0x180 [ 25.757089][ T406] __slab_free+0x2c9/0x3a0 [ 25.761605][ T406] ___cache_free+0x10e/0x130 [ 25.766244][ T406] qlink_free+0x50/0x90 [ 25.770410][ T406] qlist_free_all+0x5f/0xb0 [ 25.774929][ T406] kasan_quarantine_reduce+0x14a/0x160 [ 25.780400][ T406] __kasan_slab_alloc+0x2f/0xe0 [ 25.785262][ T406] slab_post_alloc_hook+0x5d/0x2f0 [ 25.790392][ T406] kmem_cache_alloc+0x15a/0x2d0 [ 25.795258][ T406] getname_flags+0xba/0x510 [ 25.799774][ T406] getname+0x19/0x20 [ 25.803688][ T406] do_sys_openat2+0xde/0x750 [ 25.808355][ T406] [ 25.810704][ T406] Memory state around the buggy address: [ 25.816350][ T406] ffff888111a82c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.824553][ T406] ffff888111a82c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.832629][ T406] >ffff888111a82d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.840706][ T406] ^ [ 25.847495][ T406] ffff888111a82d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.855611][ T406] ffff888111a82e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.863678][ T406] ================================================================== [ 25.871758][ T406] Disabling lock debugging due to kernel taint