Warning: Permanently added '10.128.0.43' (ED25519) to the list of known hosts. 2026/07/07 08:40:03 parsed 1 programs 2026/07/07 08:40:03 serving rpc on tcp://44517 [ 26.537393][ T30] audit: type=1400 audit(1783413603.177:64): 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 [ 26.558374][ T30] audit: type=1400 audit(1783413603.177:65): 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 [ 27.557110][ T30] audit: type=1400 audit(1783413604.197:66): avc: denied { mounton } for pid=299 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 [ 27.560537][ T299] cgroup: Unknown subsys name 'net' [ 27.579995][ T30] audit: type=1400 audit(1783413604.197:67): avc: denied { mount } for pid=299 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 [ 27.607283][ T30] audit: type=1400 audit(1783413604.217:68): avc: denied { unmount } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 27.607592][ T299] cgroup: Unknown subsys name 'devices' [ 27.777742][ T299] cgroup: Unknown subsys name 'hugetlb' [ 27.783376][ T299] cgroup: Unknown subsys name 'rlimit' [ 27.932315][ T30] audit: type=1400 audit(1783413604.567:69): avc: denied { setattr } for pid=299 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 [ 27.955547][ T30] audit: type=1400 audit(1783413604.567:70): avc: denied { create } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 27.976167][ T30] audit: type=1400 audit(1783413604.567:71): avc: denied { write } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 27.983756][ T303] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 27.997242][ T30] audit: type=1400 audit(1783413604.567:72): avc: denied { read } for pid=299 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 [ 28.025326][ T30] audit: type=1400 audit(1783413604.577:73): avc: denied { mounton } for pid=299 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 [ 28.068022][ T299] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 28.589954][ T306] request_module fs-gadgetfs succeeded, but still no fs? [ 29.026895][ T341] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.034046][ T341] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.041657][ T341] device bridge_slave_0 entered promiscuous mode [ 29.048632][ T341] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.055732][ T341] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.063167][ T341] device bridge_slave_1 entered promiscuous mode [ 29.107473][ T341] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.114537][ T341] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.122021][ T341] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.129090][ T341] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.149597][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 29.157312][ T45] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.164482][ T45] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.173629][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 29.182241][ T45] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.189336][ T45] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.198034][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.206422][ T45] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.213459][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.226239][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 29.235906][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 29.250212][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 29.261527][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 29.269795][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 29.277416][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 29.285681][ T341] device veth0_vlan entered promiscuous mode [ 29.295700][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 29.304945][ T341] device veth1_macvtap entered promiscuous mode [ 29.314391][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 29.324400][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 29.359818][ T341] syz-executor (341) used greatest stack depth: 21240 bytes left 2026/07/07 08:40:06 executed programs: 0 [ 29.737706][ T367] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.744955][ T367] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.752437][ T367] device bridge_slave_0 entered promiscuous mode [ 29.759423][ T367] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.766526][ T367] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.773880][ T367] device bridge_slave_1 entered promiscuous mode [ 29.829999][ T367] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.837109][ T367] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.844530][ T367] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.851608][ T367] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.860067][ T45] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.867421][ T45] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.890541][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 29.898121][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 29.910419][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 29.918861][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 29.928022][ T45] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.935083][ T45] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.942557][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 29.950931][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.959158][ T45] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.966229][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.979284][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 29.987407][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 29.999107][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 30.007290][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 30.020124][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 30.028770][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 30.040424][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 30.048571][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 30.057013][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 30.064532][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 30.072662][ T367] device veth0_vlan entered promiscuous mode [ 30.082446][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 30.090822][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 30.100001][ T367] device veth1_macvtap entered promiscuous mode [ 30.109506][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 30.117151][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 30.125295][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 30.134918][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 30.143188][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 30.167255][ T373] ================================================================== [ 30.175374][ T373] BUG: KASAN: use-after-free in mutex_lock+0x8e/0x1c0 [ 30.182155][ T373] Write of size 8 at addr ffff888121e7d550 by task syz.2.17/373 [ 30.189777][ T373] [ 30.192107][ T373] CPU: 0 PID: 373 Comm: syz.2.17 Not tainted syzkaller #0 [ 30.199207][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 30.209267][ T373] Call Trace: [ 30.212543][ T373] [ 30.215468][ T373] __dump_stack+0x21/0x30 [ 30.219800][ T373] dump_stack_lvl+0x110/0x170 [ 30.224474][ T373] ? show_regs_print_info+0x20/0x20 [ 30.229685][ T373] ? load_image+0x3f0/0x3f0 [ 30.234237][ T373] print_address_description+0x7f/0x2c0 [ 30.239795][ T373] ? mutex_lock+0x8e/0x1c0 [ 30.244209][ T373] kasan_report+0x10f/0x150 [ 30.248712][ T373] ? mutex_lock+0x8e/0x1c0 [ 30.253123][ T373] kasan_check_range+0x249/0x2a0 [ 30.258057][ T373] __kasan_check_write+0x14/0x20 [ 30.262987][ T373] mutex_lock+0x8e/0x1c0 [ 30.267225][ T373] ? wait_for_completion_killable_timeout+0x10/0x10 [ 30.273811][ T373] ? l2tp_session_put+0xaf/0x1a0 [ 30.278742][ T373] ? l2tp_session_delete+0x3a9/0x4a0 [ 30.284026][ T373] pppol2tp_release+0x178/0x2b0 [ 30.288876][ T373] sock_close+0xb8/0x200 [ 30.293112][ T373] ? sock_mmap+0xa0/0xa0 [ 30.297359][ T373] __fput+0x22b/0x900 [ 30.301341][ T373] ____fput+0x15/0x20 [ 30.305316][ T373] task_work_run+0x127/0x190 [ 30.309900][ T373] exit_to_user_mode_loop+0xd0/0xe0 [ 30.315105][ T373] exit_to_user_mode_prepare+0x87/0xd0 [ 30.320556][ T373] syscall_exit_to_user_mode+0x1a/0x30 [ 30.326013][ T373] do_syscall_64+0x58/0xa0 [ 30.330425][ T373] ? clear_bhb_loop+0x50/0xa0 [ 30.335095][ T373] ? clear_bhb_loop+0x50/0xa0 [ 30.339767][ T373] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 30.345656][ T373] RIP: 0033:0x7f8137ae3e59 [ 30.350096][ T373] 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 [ 30.369718][ T373] RSP: 002b:00007fffd56fd668 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 30.378141][ T373] RAX: 0000000000000000 RBX: 00007fffd56fd750 RCX: 00007f8137ae3e59 [ 30.386131][ T373] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 30.394105][ T373] RBP: 00000000000075b1 R08: 0000000000000001 R09: 0000000000000000 [ 30.402078][ T373] R10: 0000001b32e20000 R11: 0000000000000246 R12: 0000000000000000 [ 30.410052][ T373] R13: 00007f8137d6bfac R14: 00007f8137d6bfa8 R15: 00007f8137d6bfa0 [ 30.418032][ T373] [ 30.421060][ T373] [ 30.423387][ T373] Allocated by task 373: [ 30.427617][ T373] __kasan_kmalloc+0xd4/0x100 [ 30.432323][ T373] __kmalloc+0x13d/0x2c0 [ 30.436575][ T373] l2tp_session_create+0x39/0xb60 [ 30.441592][ T373] pppol2tp_connect+0xbf5/0x1640 [ 30.446521][ T373] __sys_connect+0x3cb/0x450 [ 30.451261][ T373] __x64_sys_connect+0x7a/0x90 [ 30.456067][ T373] x64_sys_call+0x7c/0x9a0 [ 30.460664][ T373] do_syscall_64+0x4c/0xa0 [ 30.465084][ T373] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 30.470974][ T373] [ 30.473293][ T373] Freed by task 373: [ 30.477195][ T373] kasan_set_track+0x4a/0x70 [ 30.481814][ T373] kasan_set_free_info+0x23/0x40 [ 30.486752][ T373] ____kasan_slab_free+0x125/0x160 [ 30.491859][ T373] __kasan_slab_free+0x11/0x20 [ 30.496615][ T373] slab_free_freelist_hook+0xc2/0x190 [ 30.502004][ T373] kfree+0xc4/0x270 [ 30.505835][ T373] l2tp_session_put+0xaf/0x1a0 [ 30.510703][ T373] l2tp_session_delete+0x3a9/0x4a0 [ 30.515810][ T373] pppol2tp_release+0x169/0x2b0 [ 30.520656][ T373] sock_close+0xb8/0x200 [ 30.524897][ T373] __fput+0x22b/0x900 [ 30.528901][ T373] ____fput+0x15/0x20 [ 30.532885][ T373] task_work_run+0x127/0x190 [ 30.537470][ T373] exit_to_user_mode_loop+0xd0/0xe0 [ 30.542665][ T373] exit_to_user_mode_prepare+0x87/0xd0 [ 30.548118][ T373] syscall_exit_to_user_mode+0x1a/0x30 [ 30.553576][ T373] do_syscall_64+0x58/0xa0 [ 30.557991][ T373] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 30.563880][ T373] [ 30.566202][ T373] The buggy address belongs to the object at ffff888121e7d400 [ 30.566202][ T373] which belongs to the cache kmalloc-512 of size 512 [ 30.580244][ T373] The buggy address is located 336 bytes inside of [ 30.580244][ T373] 512-byte region [ffff888121e7d400, ffff888121e7d600) [ 30.593541][ T373] The buggy address belongs to the page: [ 30.599168][ T373] page:ffffea0004879f00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x121e7c [ 30.609410][ T373] head:ffffea0004879f00 order:2 compound_mapcount:0 compound_pincount:0 [ 30.617729][ T373] flags: 0x4000000000010200(slab|head|zone=1) [ 30.623795][ T373] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 30.632386][ T373] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 30.640967][ T373] page dumped because: kasan: bad access detected [ 30.647370][ T373] page_owner tracks the page as allocated [ 30.653080][ T373] 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 367, ts 30156018816, free_ts 18546502130 [ 30.673492][ T373] post_alloc_hook+0x192/0x1b0 [ 30.678252][ T373] prep_new_page+0x1c/0x110 [ 30.682756][ T373] get_page_from_freelist+0x2c3a/0x2cd0 [ 30.688295][ T373] __alloc_pages+0x1a2/0x460 [ 30.692883][ T373] new_slab+0xa0/0x4d0 [ 30.696946][ T373] ___slab_alloc+0x3ac/0x840 [ 30.701530][ T373] __slab_alloc+0x49/0x90 [ 30.705853][ T373] __kmalloc_track_caller+0x169/0x2c0 [ 30.711217][ T373] __alloc_skb+0x210/0x730 [ 30.715622][ T373] netlink_ack+0x35c/0xb10 [ 30.720059][ T373] netlink_rcv_skb+0x267/0x430 [ 30.724814][ T373] rtnetlink_rcv+0x1c/0x20 [ 30.729223][ T373] netlink_unicast+0x86c/0xa30 [ 30.733976][ T373] netlink_sendmsg+0x879/0xb80 [ 30.738733][ T373] __sys_sendto+0x46d/0x620 [ 30.743226][ T373] __x64_sys_sendto+0xe5/0x100 [ 30.747984][ T373] page last free stack trace: [ 30.752642][ T373] free_unref_page_prepare+0x5fa/0x600 [ 30.758089][ T373] free_unref_page+0xae/0x540 [ 30.762757][ T373] free_compound_page+0x78/0xa0 [ 30.767622][ T373] __put_compound_page+0x77/0xb0 [ 30.772551][ T373] __put_page+0xbc/0xe0 [ 30.776722][ T373] skb_release_data+0x37c/0xa20 [ 30.781564][ T373] __kfree_skb+0x50/0x70 [ 30.785794][ T373] tcp_recvmsg_locked+0x13d1/0x24f0 [ 30.791006][ T373] tcp_recvmsg+0x233/0x770 [ 30.795422][ T373] inet_recvmsg+0x13a/0x470 [ 30.799914][ T373] sock_read_iter+0x2c2/0x380 [ 30.804581][ T373] vfs_read+0x6c0/0xc20 [ 30.808727][ T373] ksys_read+0x14a/0x260 [ 30.812963][ T373] __x64_sys_read+0x7b/0x90 [ 30.817451][ T373] x64_sys_call+0x96d/0x9a0 [ 30.821957][ T373] do_syscall_64+0x4c/0xa0 [ 30.826373][ T373] [ 30.828699][ T373] Memory state around the buggy address: [ 30.834321][ T373] ffff888121e7d400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.842370][ T373] ffff888121e7d480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.850417][ T373] >ffff888121e7d500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.858495][ T373] ^ [ 30.865155][ T373] ffff888121e7d580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.873231][ T373] ffff888121e7d600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.881281][ T373] ================================================================== [ 30.889323][ T373] Disabling lock debugging due to kernel taint