Warning: Permanently added '10.128.0.41' (ED25519) to the list of known hosts. 2026/06/27 01:56:10 parsed 1 programs 2026/06/27 01:56:10 serving rpc on tcp://38843 [ 25.037823][ T24] audit: type=1400 audit(1782525370.120:64): 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 [ 25.058630][ T24] audit: type=1400 audit(1782525370.120:65): 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 [ 25.078168][ T24] audit: type=1400 audit(1782525370.120:66): 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 [ 25.634094][ T24] audit: type=1400 audit(1782525370.720:67): 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 [ 25.635110][ T293] cgroup: Unknown subsys name 'net' [ 25.656880][ T24] audit: type=1400 audit(1782525370.720:68): 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 [ 25.684140][ T24] audit: type=1400 audit(1782525370.750:69): 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 [ 25.684301][ T293] cgroup: Unknown subsys name 'devices' [ 25.822841][ T293] cgroup: Unknown subsys name 'hugetlb' [ 25.828432][ T293] cgroup: Unknown subsys name 'rlimit' [ 25.940609][ T24] audit: type=1400 audit(1782525371.020:70): 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 [ 25.963902][ T24] audit: type=1400 audit(1782525371.020:71): 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 [ 25.984283][ T24] audit: type=1400 audit(1782525371.030:72): 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 [ 25.989643][ T297] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 26.004541][ T24] audit: type=1400 audit(1782525371.030:73): 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 Setting up swapspace version 1, size = 127995904 bytes [ 26.108940][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 26.523416][ T299] request_module fs-gadgetfs succeeded, but still no fs? [ 26.533917][ T299] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 26.871937][ T334] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.878971][ T334] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.886615][ T334] device bridge_slave_0 entered promiscuous mode [ 26.894092][ T334] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.901157][ T334] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.908372][ T334] device bridge_slave_1 entered promiscuous mode [ 26.939378][ T334] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.946513][ T334] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.953833][ T334] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.960840][ T334] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.976566][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.983761][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.990916][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 26.998320][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.006977][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.015125][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.022133][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.030542][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.038986][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.046016][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.061616][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.069429][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.081703][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.091854][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.099767][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.107264][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.115562][ T334] device veth0_vlan entered promiscuous mode [ 27.124317][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.133041][ T334] device veth1_macvtap entered promiscuous mode [ 27.141486][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.150813][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/06/27 01:56:12 executed programs: 0 [ 27.524030][ T364] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.531077][ T364] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.538424][ T364] device bridge_slave_0 entered promiscuous mode [ 27.545411][ T364] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.552522][ T364] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.559761][ T364] device bridge_slave_1 entered promiscuous mode [ 27.596423][ T364] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.603486][ T364] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.610695][ T364] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.617729][ T364] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.633043][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.640556][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.647918][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.662431][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.670561][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.677605][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.686081][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.694464][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.701501][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.716489][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.725250][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.743245][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.753601][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.761692][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.768995][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.777170][ T364] device veth0_vlan entered promiscuous mode [ 27.787597][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.797060][ T364] device veth1_macvtap entered promiscuous mode [ 27.807002][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.818037][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.842618][ T390] ================================================================== [ 27.850723][ T390] BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 [ 27.857375][ T390] Write of size 8 at addr ffff88811159cd50 by task syz.2.17/390 [ 27.864972][ T390] [ 27.867287][ T390] CPU: 0 PID: 390 Comm: syz.2.17 Not tainted syzkaller #0 [ 27.874363][ T390] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 27.884393][ T390] Call Trace: [ 27.887657][ T390] __dump_stack+0x21/0x24 [ 27.891957][ T390] dump_stack_lvl+0x1a7/0x208 [ 27.896606][ T390] ? show_regs_print_info+0x18/0x18 [ 27.901785][ T390] ? thaw_kernel_threads+0x220/0x220 [ 27.907086][ T390] print_address_description+0x7f/0x2c0 [ 27.912618][ T390] ? mutex_lock+0x85/0xf0 [ 27.916917][ T390] kasan_report+0x100/0x140 [ 27.921394][ T390] ? mutex_lock+0x85/0xf0 [ 27.925696][ T390] kasan_check_range+0x249/0x2a0 [ 27.930604][ T390] __kasan_check_write+0x14/0x20 [ 27.935602][ T390] mutex_lock+0x85/0xf0 [ 27.939729][ T390] ? mutex_trylock+0xb0/0xb0 [ 27.944314][ T390] ? l2tp_session_put+0xb2/0x1a0 [ 27.949229][ T390] ? l2tp_session_delete+0x3a9/0x4a0 [ 27.954489][ T390] pppol2tp_release+0x178/0x2b0 [ 27.959399][ T390] sock_close+0xb8/0x200 [ 27.963614][ T390] ? sock_mmap+0xa0/0xa0 [ 27.967845][ T390] __fput+0x2dc/0x730 [ 27.971796][ T390] ____fput+0x15/0x20 [ 27.975750][ T390] task_work_run+0x127/0x190 [ 27.980312][ T390] exit_to_user_mode_loop+0xcb/0xe0 [ 27.985478][ T390] exit_to_user_mode_prepare+0x76/0xa0 [ 27.990913][ T390] syscall_exit_to_user_mode+0x1d/0x40 [ 27.996341][ T390] do_syscall_64+0x3d/0x40 [ 28.000729][ T390] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.006590][ T390] RIP: 0033:0x7f7e0c1dfe59 [ 28.010977][ T390] 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 [ 28.030557][ T390] RSP: 002b:00007ffee9757d28 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 28.038971][ T390] RAX: 0000000000000000 RBX: 00007ffee9757e10 RCX: 00007f7e0c1dfe59 [ 28.046933][ T390] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 28.054883][ T390] RBP: 0000000000006cab R08: 0000000000000001 R09: 0000000000000000 [ 28.062835][ T390] R10: 0000001b32b20000 R11: 0000000000000246 R12: 0000000000000000 [ 28.070782][ T390] R13: 00007f7e0c458fac R14: 00007f7e0c458fa8 R15: 00007f7e0c458fa0 [ 28.078728][ T390] [ 28.081031][ T390] Allocated by task 390: [ 28.085251][ T390] __kasan_kmalloc+0xd4/0x100 [ 28.089903][ T390] __kmalloc+0x19f/0x330 [ 28.094121][ T390] l2tp_session_create+0x39/0xb60 [ 28.099112][ T390] pppol2tp_connect+0xbf5/0x1640 [ 28.104025][ T390] __sys_connect+0x3ce/0x450 [ 28.108581][ T390] __x64_sys_connect+0x7a/0x90 [ 28.113315][ T390] do_syscall_64+0x31/0x40 [ 28.117700][ T390] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.123558][ T390] [ 28.125859][ T390] Freed by task 390: [ 28.129729][ T390] kasan_set_track+0x4a/0x70 [ 28.134295][ T390] kasan_set_free_info+0x23/0x40 [ 28.139200][ T390] ____kasan_slab_free+0x125/0x160 [ 28.144287][ T390] __kasan_slab_free+0x11/0x20 [ 28.149019][ T390] slab_free_freelist_hook+0xc5/0x190 [ 28.154359][ T390] kfree+0xc0/0x270 [ 28.158137][ T390] l2tp_session_put+0xb2/0x1a0 [ 28.162875][ T390] l2tp_session_delete+0x3a9/0x4a0 [ 28.167955][ T390] pppol2tp_release+0x169/0x2b0 [ 28.172778][ T390] sock_close+0xb8/0x200 [ 28.176993][ T390] __fput+0x2dc/0x730 [ 28.180943][ T390] ____fput+0x15/0x20 [ 28.184893][ T390] task_work_run+0x127/0x190 [ 28.189453][ T390] exit_to_user_mode_loop+0xcb/0xe0 [ 28.194620][ T390] exit_to_user_mode_prepare+0x76/0xa0 [ 28.200047][ T390] syscall_exit_to_user_mode+0x1d/0x40 [ 28.205473][ T390] do_syscall_64+0x3d/0x40 [ 28.209857][ T390] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.215713][ T390] [ 28.218015][ T390] The buggy address belongs to the object at ffff88811159cc00 [ 28.218015][ T390] which belongs to the cache kmalloc-512 of size 512 [ 28.232043][ T390] The buggy address is located 336 bytes inside of [ 28.232043][ T390] 512-byte region [ffff88811159cc00, ffff88811159ce00) [ 28.245287][ T390] The buggy address belongs to the page: [ 28.250914][ T390] page:ffffea0004456700 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11159c [ 28.261125][ T390] head:ffffea0004456700 order:2 compound_mapcount:0 compound_pincount:0 [ 28.269436][ T390] flags: 0x4000000000010200(slab|head) [ 28.274871][ T390] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 28.283431][ T390] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 28.292005][ T390] page dumped because: kasan: bad access detected [ 28.298388][ T390] page_owner tracks the page as allocated [ 28.304080][ T390] 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 364, ts 27831801510, free_ts 27804357325 [ 28.324447][ T390] prep_new_page+0x176/0x190 [ 28.329007][ T390] get_page_from_freelist+0x225f/0x23f0 [ 28.334523][ T390] __alloc_pages_nodemask+0x29a/0x640 [ 28.339864][ T390] new_slab+0x84/0x3f0 [ 28.343901][ T390] ___slab_alloc+0x2f8/0x4c0 [ 28.348458][ T390] __slab_alloc+0x63/0xa0 [ 28.352759][ T390] kmem_cache_alloc_trace+0x1a8/0x2e0 [ 28.358113][ T390] alloc_fair_sched_group+0x1f2/0x6d0 [ 28.363455][ T390] sched_create_group+0x42/0x230 [ 28.368359][ T390] cpu_cgroup_css_alloc+0xe/0x30 [ 28.373265][ T390] cgroup_apply_control_enable+0x338/0x12b0 [ 28.379124][ T390] cgroup_mkdir+0x143c/0x16d0 [ 28.383773][ T390] kernfs_iop_mkdir+0x1a3/0x2b0 [ 28.388595][ T390] vfs_mkdir+0x42c/0x600 [ 28.392826][ T390] do_mkdirat+0x14c/0x340 [ 28.397124][ T390] __x64_sys_mkdirat+0x7b/0x90 [ 28.401942][ T390] page last free stack trace: [ 28.406589][ T390] __free_pages_ok+0x80b/0x830 [ 28.411339][ T390] __free_pages+0xd8/0x390 [ 28.415743][ T390] __free_slab+0xcf/0x190 [ 28.420038][ T390] unfreeze_partials+0x150/0x180 [ 28.424944][ T390] put_cpu_partial+0xc1/0x180 [ 28.429587][ T390] __slab_free+0x2c9/0x3a0 [ 28.433974][ T390] ___cache_free+0x10e/0x130 [ 28.438531][ T390] qlink_free+0x50/0x90 [ 28.442655][ T390] qlist_free_all+0x5f/0xb0 [ 28.447131][ T390] kasan_quarantine_reduce+0x14a/0x160 [ 28.452562][ T390] __kasan_slab_alloc+0x2f/0xe0 [ 28.457385][ T390] slab_post_alloc_hook+0x5d/0x2f0 [ 28.462468][ T390] kmem_cache_alloc+0x15a/0x2d0 [ 28.467294][ T390] __alloc_skb+0x9e/0x520 [ 28.471600][ T390] netlink_sendmsg+0x693/0xb70 [ 28.476347][ T390] __sys_sendto+0x467/0x620 [ 28.480817][ T390] [ 28.483118][ T390] Memory state around the buggy address: [ 28.488725][ T390] ffff88811159cc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.496758][ T390] ffff88811159cc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.504812][ T390] >ffff88811159cd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.512843][ T390] ^ [ 28.519507][ T390] ffff88811159cd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.527539][ T390] ffff88811159ce00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.535572][ T390] ================================================================== [ 28.543604][ T390] Disabling lock debugging due to kernel taint