Warning: Permanently added '10.128.0.62' (ED25519) to the list of known hosts. 2026/06/17 03:02:29 parsed 1 programs [ 22.613472][ T28] audit: type=1400 audit(1781665349.058:64): avc: denied { node_bind } for pid=295 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 22.639208][ T28] audit: type=1400 audit(1781665349.058:65): avc: denied { module_request } for pid=295 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 [ 23.394879][ T28] audit: type=1400 audit(1781665349.838:66): avc: denied { mounton } for pid=302 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 [ 23.395848][ T302] cgroup: Unknown subsys name 'net' [ 23.417545][ T28] audit: type=1400 audit(1781665349.838:67): avc: denied { mount } for pid=302 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 [ 23.444913][ T28] audit: type=1400 audit(1781665349.868:68): avc: denied { unmount } for pid=302 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 23.445076][ T302] cgroup: Unknown subsys name 'devices' [ 23.591497][ T302] cgroup: Unknown subsys name 'hugetlb' [ 23.597118][ T302] cgroup: Unknown subsys name 'rlimit' [ 23.704725][ T28] audit: type=1400 audit(1781665350.148:69): avc: denied { setattr } for pid=302 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=258 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 23.727881][ T28] audit: type=1400 audit(1781665350.148:70): avc: denied { create } for pid=302 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 23.748396][ T28] audit: type=1400 audit(1781665350.148:71): avc: denied { write } for pid=302 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 23.768667][ T28] audit: type=1400 audit(1781665350.148:72): avc: denied { read } for pid=302 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 23.771642][ T305] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). Setting up swapspace version 1, size = 127995904 bytes [ 23.788972][ T28] audit: type=1400 audit(1781665350.148:73): avc: denied { mounton } for pid=302 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 [ 23.819240][ T302] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 24.459480][ T308] request_module fs-gadgetfs succeeded, but still no fs? [ 24.983430][ T351] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.990494][ T351] bridge0: port 1(bridge_slave_0) entered disabled state [ 24.997786][ T351] device bridge_slave_0 entered promiscuous mode [ 25.004749][ T351] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.011820][ T351] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.019107][ T351] device bridge_slave_1 entered promiscuous mode [ 25.058955][ T351] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.066011][ T351] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.073365][ T351] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.080403][ T351] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.099538][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.107105][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.114407][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.123298][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.132366][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.139393][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.151973][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.160173][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.167180][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.178760][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.187806][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.201129][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.215885][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.224030][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.231703][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.239638][ T351] device veth0_vlan entered promiscuous mode [ 25.249104][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.262996][ T351] device veth1_macvtap entered promiscuous mode [ 25.272255][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.281999][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 25.319474][ T351] syz-executor (351) used greatest stack depth: 22144 bytes left 2026/06/17 03:02:32 executed programs: 0 [ 25.613629][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.620728][ T370] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.628036][ T370] device bridge_slave_0 entered promiscuous mode [ 25.635152][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.642488][ T370] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.650353][ T370] device bridge_slave_1 entered promiscuous mode [ 25.698012][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.705082][ T370] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.712368][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.719392][ T370] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.740276][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.747891][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.755406][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.764543][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.772941][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.779993][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.788401][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.796771][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.803815][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.815154][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.824860][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.837013][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.847775][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.856159][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.863690][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.873024][ T370] device veth0_vlan entered promiscuous mode [ 25.882389][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 25.890861][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.903418][ T370] device veth1_macvtap entered promiscuous mode [ 25.912164][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 25.920004][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 25.928254][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.938066][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 25.946387][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 25.970624][ T375] ================================================================== [ 25.978710][ T375] BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 [ 25.985468][ T375] Write of size 8 at addr ffff88812de8f950 by task syz.2.17/375 [ 25.993080][ T375] [ 25.995406][ T375] CPU: 1 PID: 375 Comm: syz.2.17 Not tainted syzkaller #0 [ 26.002492][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 26.012545][ T375] Call Trace: [ 26.015860][ T375] [ 26.018793][ T375] __dump_stack+0x21/0x24 [ 26.023125][ T375] dump_stack_lvl+0x110/0x170 [ 26.027792][ T375] ? __cfi_dump_stack_lvl+0x8/0x8 [ 26.032891][ T375] ? mutex_lock+0x86/0x1b0 [ 26.037295][ T375] print_address_description+0x71/0x200 [ 26.042825][ T375] print_report+0x4a/0x60 [ 26.047133][ T375] kasan_report+0x122/0x150 [ 26.051621][ T375] ? mutex_lock+0x86/0x1b0 [ 26.056037][ T375] kasan_check_range+0x249/0x2a0 [ 26.061043][ T375] __kasan_check_write+0x14/0x20 [ 26.065962][ T375] mutex_lock+0x86/0x1b0 [ 26.070184][ T375] ? __cfi_mutex_lock+0x10/0x10 [ 26.075017][ T375] ? kfree+0x6f/0xf0 [ 26.078886][ T375] ? l2tp_session_put+0xaf/0x1a0 [ 26.083801][ T375] ? l2tp_session_delete+0x3df/0x4d0 [ 26.089065][ T375] pppol2tp_release+0x178/0x2b0 [ 26.093895][ T375] sock_close+0xc9/0x220 [ 26.098124][ T375] ? __cfi_sock_close+0x10/0x10 [ 26.102957][ T375] __fput+0x1fd/0x8f0 [ 26.106925][ T375] ____fput+0x15/0x20 [ 26.110888][ T375] task_work_run+0x1e1/0x250 [ 26.115482][ T375] ? __cfi_task_work_run+0x10/0x10 [ 26.120573][ T375] ? __cfi___close_range+0x10/0x10 [ 26.125672][ T375] exit_to_user_mode_loop+0x9b/0xb0 [ 26.130889][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 26.136326][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 26.141765][ T375] do_syscall_64+0x58/0xa0 [ 26.146163][ T375] ? clear_bhb_loop+0x30/0x80 [ 26.150813][ T375] ? clear_bhb_loop+0x30/0x80 [ 26.155463][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.161333][ T375] RIP: 0033:0x7f026099ce59 [ 26.165725][ T375] 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 [ 26.185310][ T375] RSP: 002b:00007fffca693628 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 26.193712][ T375] RAX: 0000000000000000 RBX: 00007fffca693710 RCX: 00007f026099ce59 [ 26.201669][ T375] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 26.209643][ T375] RBP: 000000000000655d R08: 0000000000000001 R09: 0000000000000000 [ 26.217591][ T375] R10: 0000001b33120000 R11: 0000000000000246 R12: 0000000000000000 [ 26.225542][ T375] R13: 00007f0260c15fac R14: 00007f0260c15fa8 R15: 00007f0260c15fa0 [ 26.233499][ T375] [ 26.236497][ T375] [ 26.238821][ T375] Allocated by task 375: [ 26.243045][ T375] kasan_set_track+0x4b/0x70 [ 26.247708][ T375] kasan_save_alloc_info+0x1f/0x30 [ 26.252824][ T375] __kasan_kmalloc+0x95/0xb0 [ 26.257396][ T375] __kmalloc+0xb4/0x1e0 [ 26.261550][ T375] l2tp_session_create+0x38/0xbd0 [ 26.266560][ T375] pppol2tp_connect+0xbf5/0x1640 [ 26.271476][ T375] __sys_connect+0x3da/0x460 [ 26.276046][ T375] __x64_sys_connect+0x7a/0x90 [ 26.280795][ T375] x64_sys_call+0x88d/0x9a0 [ 26.285279][ T375] do_syscall_64+0x4c/0xa0 [ 26.289672][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.295546][ T375] [ 26.297878][ T375] Freed by task 375: [ 26.301748][ T375] kasan_set_track+0x4b/0x70 [ 26.306319][ T375] kasan_save_free_info+0x2b/0x40 [ 26.311318][ T375] ____kasan_slab_free+0x132/0x180 [ 26.316409][ T375] __kasan_slab_free+0x11/0x20 [ 26.321154][ T375] slab_free_freelist_hook+0xc2/0x190 [ 26.326504][ T375] __kmem_cache_free+0xb7/0x1b0 [ 26.331335][ T375] kfree+0x6f/0xf0 [ 26.335039][ T375] l2tp_session_put+0xaf/0x1a0 [ 26.339779][ T375] l2tp_session_delete+0x3df/0x4d0 [ 26.344864][ T375] pppol2tp_release+0x169/0x2b0 [ 26.349690][ T375] sock_close+0xc9/0x220 [ 26.353920][ T375] __fput+0x1fd/0x8f0 [ 26.357884][ T375] ____fput+0x15/0x20 [ 26.361842][ T375] task_work_run+0x1e1/0x250 [ 26.366411][ T375] exit_to_user_mode_loop+0x9b/0xb0 [ 26.371588][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 26.377025][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 26.382464][ T375] do_syscall_64+0x58/0xa0 [ 26.386872][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.392778][ T375] [ 26.395085][ T375] The buggy address belongs to the object at ffff88812de8f800 [ 26.395085][ T375] which belongs to the cache kmalloc-512 of size 512 [ 26.409110][ T375] The buggy address is located 336 bytes inside of [ 26.409110][ T375] 512-byte region [ffff88812de8f800, ffff88812de8fa00) [ 26.422366][ T375] [ 26.424674][ T375] The buggy address belongs to the physical page: [ 26.431155][ T375] page:ffffea0004b7a300 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12de8c [ 26.441376][ T375] head:ffffea0004b7a300 order:2 compound_mapcount:0 compound_pincount:0 [ 26.449678][ T375] flags: 0x4000000000010200(slab|head|zone=1) [ 26.455735][ T375] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 26.464308][ T375] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 26.472867][ T375] page dumped because: kasan: bad access detected [ 26.479255][ T375] page_owner tracks the page as allocated [ 26.484948][ T375] 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, tgid 370 (syz-executor), ts 25960965973, free_ts 25959966254 [ 26.507605][ T375] post_alloc_hook+0x1f5/0x210 [ 26.512360][ T375] prep_new_page+0x1c/0x110 [ 26.516848][ T375] get_page_from_freelist+0x2ca9/0x2d20 [ 26.522377][ T375] __alloc_pages+0x1fa/0x610 [ 26.526951][ T375] alloc_slab_page+0x6e/0xf0 [ 26.531521][ T375] new_slab+0x98/0x3e0 [ 26.535568][ T375] ___slab_alloc+0x70f/0xb70 [ 26.540143][ T375] __slab_alloc+0x5e/0xa0 [ 26.544456][ T375] __kmem_cache_alloc_node+0x204/0x2d0 [ 26.549900][ T375] __kmalloc+0xa4/0x1e0 [ 26.554038][ T375] fib6_info_alloc+0x34/0xe0 [ 26.558618][ T375] ip6_route_info_create+0x51b/0x14d0 [ 26.563974][ T375] ip6_route_add+0x27/0x130 [ 26.568462][ T375] addrconf_prefix_route+0x233/0x310 [ 26.573735][ T375] inet6_addr_add+0x527/0x9c0 [ 26.578398][ T375] inet6_rtm_newaddr+0x74a/0xa10 [ 26.583315][ T375] page last free stack trace: [ 26.587975][ T375] free_unref_page_prepare+0x80c/0x820 [ 26.593416][ T375] free_unref_page+0x93/0x530 [ 26.598077][ T375] __free_pages+0x67/0x100 [ 26.602476][ T375] free_pages+0x82/0x90 [ 26.606615][ T375] __stack_depot_save+0x45f/0x490 [ 26.611622][ T375] stack_depot_save+0x13/0x20 [ 26.616279][ T375] ref_tracker_free+0x129/0x800 [ 26.621141][ T375] __qdisc_destroy+0x128/0x290 [ 26.625906][ T375] dev_shutdown+0x459/0x580 [ 26.630411][ T375] unregister_netdevice_many+0x9a0/0x1910 [ 26.636120][ T375] ip6_tnl_exit_batch_net+0x3ee/0x440 [ 26.641490][ T375] cleanup_net+0x630/0xb10 [ 26.645894][ T375] process_one_work+0x717/0xc30 [ 26.650729][ T375] worker_thread+0xa4d/0x11d0 [ 26.655390][ T375] kthread+0x281/0x320 [ 26.659565][ T375] ret_from_fork+0x1f/0x30 [ 26.663979][ T375] [ 26.666290][ T375] Memory state around the buggy address: [ 26.671902][ T375] ffff88812de8f800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.679965][ T375] ffff88812de8f880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.688045][ T375] >ffff88812de8f900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.696102][ T375] ^ [ 26.702763][ T375] ffff88812de8f980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.710806][ T375] ffff88812de8fa00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.718871][ T375] ================================================================== [ 26.732104][ T375] Disabling lock debugging due to kernel taint