Warning: Permanently added '10.128.0.39' (ED25519) to the list of known hosts. 2026/06/18 00:34:20 parsed 1 programs 2026/06/18 00:34:20 serving rpc on tcp://44367 [ 24.245564][ T28] audit: type=1400 audit(1781742860.294:64): 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 [ 24.266361][ T28] audit: type=1400 audit(1781742860.294:65): 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 [ 25.077427][ T28] audit: type=1400 audit(1781742861.124:66): avc: denied { mounton } for pid=301 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 [ 25.078381][ T301] cgroup: Unknown subsys name 'net' [ 25.100203][ T28] audit: type=1400 audit(1781742861.124:67): avc: denied { mount } for pid=301 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 [ 25.127872][ T28] audit: type=1400 audit(1781742861.154:68): avc: denied { unmount } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 25.128033][ T301] cgroup: Unknown subsys name 'devices' [ 25.271485][ T301] cgroup: Unknown subsys name 'hugetlb' [ 25.277099][ T301] cgroup: Unknown subsys name 'rlimit' [ 25.385125][ T28] audit: type=1400 audit(1781742861.434:69): avc: denied { setattr } for pid=301 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 [ 25.408611][ T28] audit: type=1400 audit(1781742861.434:70): avc: denied { create } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.429256][ T28] audit: type=1400 audit(1781742861.434:71): avc: denied { write } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.430267][ T305] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 25.450329][ T28] audit: type=1400 audit(1781742861.434:72): avc: denied { read } for pid=301 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 [ 25.479039][ T28] audit: type=1400 audit(1781742861.434:73): avc: denied { mounton } for pid=301 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 [ 25.500317][ T301] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 26.210853][ T309] request_module fs-gadgetfs succeeded, but still no fs? [ 26.882812][ T357] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.890204][ T357] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.897526][ T357] device bridge_slave_0 entered promiscuous mode [ 26.904658][ T357] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.911915][ T357] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.919217][ T357] device bridge_slave_1 entered promiscuous mode [ 26.956201][ T357] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.963569][ T357] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.970864][ T357] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.978155][ T357] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.997292][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.005087][ T335] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.012746][ T335] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.021681][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.030500][ T335] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.037534][ T335] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.046460][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.054891][ T335] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.061980][ T335] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.073918][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.083636][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.098065][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.109541][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.118155][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.126032][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.134449][ T357] device veth0_vlan entered promiscuous mode [ 27.145297][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.155047][ T357] device veth1_macvtap entered promiscuous mode [ 27.164871][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.175208][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/06/18 00:34:23 executed programs: 0 [ 27.478152][ T371] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.485307][ T371] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.493294][ T371] device bridge_slave_0 entered promiscuous mode [ 27.506735][ T371] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.513940][ T371] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.521519][ T371] device bridge_slave_1 entered promiscuous mode [ 27.567741][ T371] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.574818][ T371] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.582131][ T371] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.589245][ T371] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.607263][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.615250][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.622654][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.636337][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.644556][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.651692][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.660843][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.669102][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.676235][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.688013][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.702165][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.715802][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.726904][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.735251][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.744034][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.752845][ T371] device veth0_vlan entered promiscuous mode [ 27.765964][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 27.775037][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.785407][ T371] device veth1_macvtap entered promiscuous mode [ 27.796338][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 27.804211][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 27.812677][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.824978][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 27.833434][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.856675][ T376] ================================================================== [ 27.864804][ T376] BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 [ 27.871593][ T376] Write of size 8 at addr ffff8881222d1550 by task syz.2.17/376 [ 27.879387][ T376] [ 27.881715][ T376] CPU: 0 PID: 376 Comm: syz.2.17 Not tainted syzkaller #0 [ 27.888824][ T376] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 27.898880][ T376] Call Trace: [ 27.902169][ T376] [ 27.905093][ T376] __dump_stack+0x21/0x24 [ 27.909416][ T376] dump_stack_lvl+0x110/0x170 [ 27.914262][ T376] ? __cfi_dump_stack_lvl+0x8/0x8 [ 27.919285][ T376] ? mutex_lock+0x86/0x1b0 [ 27.923694][ T376] print_address_description+0x71/0x200 [ 27.929239][ T376] print_report+0x4a/0x60 [ 27.933671][ T376] kasan_report+0x122/0x150 [ 27.938337][ T376] ? mutex_lock+0x86/0x1b0 [ 27.942775][ T376] kasan_check_range+0x249/0x2a0 [ 27.948104][ T376] __kasan_check_write+0x14/0x20 [ 27.953037][ T376] mutex_lock+0x86/0x1b0 [ 27.957281][ T376] ? __cfi_mutex_lock+0x10/0x10 [ 27.962142][ T376] ? kfree+0x6f/0xf0 [ 27.966034][ T376] ? l2tp_session_put+0xaf/0x1a0 [ 27.970969][ T376] ? l2tp_session_delete+0x3df/0x4d0 [ 27.976466][ T376] pppol2tp_release+0x178/0x2b0 [ 27.981389][ T376] sock_close+0xc9/0x220 [ 27.985671][ T376] ? __cfi_sock_close+0x10/0x10 [ 27.990529][ T376] __fput+0x1fd/0x8f0 [ 27.994519][ T376] ____fput+0x15/0x20 [ 27.998627][ T376] task_work_run+0x1e1/0x250 [ 28.003412][ T376] ? __cfi_task_work_run+0x10/0x10 [ 28.008599][ T376] ? __cfi___close_range+0x10/0x10 [ 28.013885][ T376] exit_to_user_mode_loop+0x9b/0xb0 [ 28.019169][ T376] exit_to_user_mode_prepare+0x87/0xd0 [ 28.024647][ T376] syscall_exit_to_user_mode+0x1a/0x30 [ 28.030111][ T376] do_syscall_64+0x58/0xa0 [ 28.034533][ T376] ? clear_bhb_loop+0x30/0x80 [ 28.039215][ T376] ? clear_bhb_loop+0x30/0x80 [ 28.043878][ T376] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.050293][ T376] RIP: 0033:0x7f849299ce59 [ 28.054708][ 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 [ 28.074299][ T376] RSP: 002b:00007fffc77805f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 28.082700][ T376] RAX: 0000000000000000 RBX: 00007fffc77806e0 RCX: 00007f849299ce59 [ 28.090661][ T376] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 28.098709][ T376] RBP: 0000000000006cbb R08: 0000000000000001 R09: 0000000000000000 [ 28.106666][ T376] R10: 0000001b33220000 R11: 0000000000000246 R12: 0000000000000000 [ 28.114632][ T376] R13: 00007f8492c15fac R14: 00007f8492c15fa8 R15: 00007f8492c15fa0 [ 28.122629][ T376] [ 28.125656][ T376] [ 28.128097][ T376] Allocated by task 376: [ 28.132327][ T376] kasan_set_track+0x4b/0x70 [ 28.136941][ T376] kasan_save_alloc_info+0x1f/0x30 [ 28.142042][ T376] __kasan_kmalloc+0x95/0xb0 [ 28.146644][ T376] __kmalloc+0xb4/0x1e0 [ 28.150790][ T376] l2tp_session_create+0x38/0xbd0 [ 28.155804][ T376] pppol2tp_connect+0xbf5/0x1640 [ 28.160733][ T376] __sys_connect+0x3da/0x460 [ 28.165312][ T376] __x64_sys_connect+0x7a/0x90 [ 28.170082][ T376] x64_sys_call+0x88d/0x9a0 [ 28.174686][ T376] do_syscall_64+0x4c/0xa0 [ 28.179091][ T376] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.184983][ T376] [ 28.187330][ T376] Freed by task 376: [ 28.191234][ T376] kasan_set_track+0x4b/0x70 [ 28.195830][ T376] kasan_save_free_info+0x2b/0x40 [ 28.200847][ T376] ____kasan_slab_free+0x132/0x180 [ 28.205963][ T376] __kasan_slab_free+0x11/0x20 [ 28.210715][ T376] slab_free_freelist_hook+0xc2/0x190 [ 28.216080][ T376] __kmem_cache_free+0xb7/0x1b0 [ 28.220931][ T376] kfree+0x6f/0xf0 [ 28.224653][ T376] l2tp_session_put+0xaf/0x1a0 [ 28.229589][ T376] l2tp_session_delete+0x3df/0x4d0 [ 28.234720][ T376] pppol2tp_release+0x169/0x2b0 [ 28.239587][ T376] sock_close+0xc9/0x220 [ 28.243838][ T376] __fput+0x1fd/0x8f0 [ 28.247817][ T376] ____fput+0x15/0x20 [ 28.251898][ T376] task_work_run+0x1e1/0x250 [ 28.256487][ T376] exit_to_user_mode_loop+0x9b/0xb0 [ 28.261725][ T376] exit_to_user_mode_prepare+0x87/0xd0 [ 28.267173][ T376] syscall_exit_to_user_mode+0x1a/0x30 [ 28.272644][ T376] do_syscall_64+0x58/0xa0 [ 28.277223][ T376] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.283108][ T376] [ 28.285420][ T376] The buggy address belongs to the object at ffff8881222d1400 [ 28.285420][ T376] which belongs to the cache kmalloc-512 of size 512 [ 28.299586][ T376] The buggy address is located 336 bytes inside of [ 28.299586][ T376] 512-byte region [ffff8881222d1400, ffff8881222d1600) [ 28.312885][ T376] [ 28.315242][ T376] The buggy address belongs to the physical page: [ 28.321653][ T376] page:ffffea000488b400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1222d0 [ 28.331886][ T376] head:ffffea000488b400 order:2 compound_mapcount:0 compound_pincount:0 [ 28.340205][ T376] flags: 0x4000000000010200(slab|head|zone=1) [ 28.346446][ T376] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 28.355050][ T376] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 28.363626][ T376] page dumped because: kasan: bad access detected [ 28.370032][ T376] page_owner tracks the page as allocated [ 28.375746][ 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 371, tgid 371 (syz-executor), ts 27850405043, free_ts 26696996025 [ 28.398668][ T376] post_alloc_hook+0x1f5/0x210 [ 28.403435][ T376] prep_new_page+0x1c/0x110 [ 28.408054][ T376] get_page_from_freelist+0x2ca9/0x2d20 [ 28.413783][ T376] __alloc_pages+0x1fa/0x610 [ 28.418375][ T376] alloc_slab_page+0x6e/0xf0 [ 28.422965][ T376] new_slab+0x98/0x3e0 [ 28.427115][ T376] ___slab_alloc+0x70f/0xb70 [ 28.431701][ T376] __slab_alloc+0x5e/0xa0 [ 28.436290][ T376] __kmem_cache_alloc_node+0x204/0x2d0 [ 28.441761][ T376] kmalloc_trace+0x29/0xb0 [ 28.446171][ T376] find_css_set+0x937/0x15c0 [ 28.450747][ T376] cgroup_migrate_prepare_dst+0xc4/0xa00 [ 28.456394][ T376] cgroup_attach_task+0x298/0x520 [ 28.461444][ T376] __cgroup_procs_write+0x2b1/0x2e0 [ 28.466736][ T376] cgroup_procs_write+0x27/0x50 [ 28.471690][ T376] cgroup_file_write+0x2a2/0x590 [ 28.476724][ T376] page last free stack trace: [ 28.481383][ T376] free_unref_page_prepare+0x80c/0x820 [ 28.486840][ T376] free_unref_page+0x93/0x530 [ 28.491522][ T376] __free_pages+0x67/0x100 [ 28.496047][ T376] __vunmap+0xa3c/0xc00 [ 28.500726][ T376] vfree+0x61/0x90 [ 28.504524][ T376] kcov_close+0x2b/0x50 [ 28.508708][ T376] __fput+0x1fd/0x8f0 [ 28.512721][ T376] ____fput+0x15/0x20 [ 28.516703][ T376] task_work_run+0x1e1/0x250 [ 28.521288][ T376] do_exit+0xa7c/0x27c0 [ 28.525449][ T376] do_group_exit+0x21b/0x2e0 [ 28.530031][ T376] get_signal+0x1382/0x14f0 [ 28.534531][ T376] arch_do_signal_or_restart+0xd1/0x11c0 [ 28.540181][ T376] exit_to_user_mode_loop+0x7a/0xb0 [ 28.545368][ T376] exit_to_user_mode_prepare+0x87/0xd0 [ 28.550818][ T376] syscall_exit_to_user_mode+0x1a/0x30 [ 28.556360][ T376] [ 28.558690][ T376] Memory state around the buggy address: [ 28.564321][ T376] ffff8881222d1400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.572465][ T376] ffff8881222d1480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.580698][ T376] >ffff8881222d1500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.588833][ T376] ^ [ 28.595509][ T376] ffff8881222d1580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.603573][ T376] ffff8881222d1600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.611657][ T376] ================================================================== [ 28.620673][ T376] Disabling lock debugging due to kernel taint