Warning: Permanently added '10.128.1.68' (ED25519) to the list of known hosts. 2026/07/25 06:35:50 parsed 1 programs 2026/07/25 06:35:50 serving rpc on tcp://39893 [ 29.476774][ T30] audit: type=1400 audit(1784961350.178:64): 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 [ 29.497757][ T30] audit: type=1400 audit(1784961350.178:65): 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 [ 30.116875][ T30] audit: type=1400 audit(1784961350.818:66): 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 [ 30.118018][ T299] cgroup: Unknown subsys name 'net' [ 30.139581][ T30] audit: type=1400 audit(1784961350.818:67): 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 [ 30.167212][ T30] audit: type=1400 audit(1784961350.848:68): 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 [ 30.167379][ T299] cgroup: Unknown subsys name 'devices' [ 30.306199][ T299] cgroup: Unknown subsys name 'hugetlb' [ 30.311862][ T299] cgroup: Unknown subsys name 'rlimit' [ 30.483044][ T30] audit: type=1400 audit(1784961351.178:69): 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 [ 30.506236][ T30] audit: type=1400 audit(1784961351.178:70): 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 Setting up swapspace version 1, size = 127995904 bytes [ 30.507015][ T303] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 30.526885][ T30] audit: type=1400 audit(1784961351.178:71): 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 [ 30.555463][ T30] audit: type=1400 audit(1784961351.178:72): 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 [ 30.576094][ T30] audit: type=1400 audit(1784961351.178:73): 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 [ 30.576346][ T299] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 31.018113][ T305] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.025456][ T305] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.032980][ T305] device bridge_slave_0 entered promiscuous mode [ 31.040189][ T305] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.047277][ T305] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.054899][ T305] device bridge_slave_1 entered promiscuous mode [ 31.097565][ T305] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.104634][ T305] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.111874][ T305] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.119111][ T305] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.136217][ T45] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.143501][ T45] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.151224][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 31.159205][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 31.168438][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 31.176731][ T45] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.183842][ T45] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.193044][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 31.201306][ T45] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.208670][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.220128][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 31.229451][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 31.242333][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 31.253140][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 31.261365][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 31.268961][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 31.277124][ T305] device veth0_vlan entered promiscuous mode [ 31.286638][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 31.295725][ T305] device veth1_macvtap entered promiscuous mode [ 31.304635][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 31.314625][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 31.331449][ T305] request_module fs-gadgetfs succeeded, but still no fs? [ 31.356027][ T305] syz-executor (305) used greatest stack depth: 20864 bytes left [ 31.797834][ T8] device bridge_slave_1 left promiscuous mode [ 31.804056][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.812464][ T8] device bridge_slave_0 left promiscuous mode [ 31.826514][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.846492][ T8] device veth1_macvtap left promiscuous mode [ 31.852577][ T8] device veth0_vlan left promiscuous mode 2026/07/25 06:35:52 executed programs: 0 [ 32.239486][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.247050][ T368] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.254581][ T368] device bridge_slave_0 entered promiscuous mode [ 32.261443][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.270582][ T368] bridge0: port 2(bridge_slave_1) entered disabled state [ 32.277939][ T368] device bridge_slave_1 entered promiscuous mode [ 32.313376][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.320595][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.327985][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.335021][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.352348][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.360878][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.368792][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 32.377642][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 32.385885][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.392910][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.401398][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 32.409653][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.416710][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.427888][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 32.437061][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 32.449476][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 32.460092][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 32.468273][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 32.475937][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 32.483945][ T368] device veth0_vlan entered promiscuous mode [ 32.493342][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 32.502266][ T368] device veth1_macvtap entered promiscuous mode [ 32.510976][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 32.521061][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 32.542324][ T372] ================================================================== [ 32.550410][ T372] BUG: KASAN: use-after-free in mutex_lock+0x8e/0x1c0 [ 32.557193][ T372] Write of size 8 at addr ffff888122a5b550 by task syz.2.17/372 [ 32.564803][ T372] [ 32.567120][ T372] CPU: 0 PID: 372 Comm: syz.2.17 Not tainted syzkaller #0 [ 32.574582][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 32.584672][ T372] Call Trace: [ 32.587939][ T372] [ 32.590897][ T372] __dump_stack+0x21/0x30 [ 32.595210][ T372] dump_stack_lvl+0x110/0x170 [ 32.599889][ T372] ? show_regs_print_info+0x20/0x20 [ 32.605175][ T372] ? load_image+0x3f0/0x3f0 [ 32.609678][ T372] print_address_description+0x7f/0x2c0 [ 32.615202][ T372] ? mutex_lock+0x8e/0x1c0 [ 32.619747][ T372] kasan_report+0x10f/0x150 [ 32.624255][ T372] ? mutex_lock+0x8e/0x1c0 [ 32.628684][ T372] kasan_check_range+0x249/0x2a0 [ 32.633614][ T372] __kasan_check_write+0x14/0x20 [ 32.638659][ T372] mutex_lock+0x8e/0x1c0 [ 32.642910][ T372] ? wait_for_completion_killable_timeout+0x10/0x10 [ 32.649516][ T372] ? l2tp_session_put+0xaf/0x1a0 [ 32.654564][ T372] ? l2tp_session_delete+0x3a9/0x4a0 [ 32.659864][ T372] pppol2tp_release+0x178/0x2b0 [ 32.664733][ T372] sock_close+0xb8/0x200 [ 32.670083][ T372] ? sock_mmap+0xa0/0xa0 [ 32.674322][ T372] __fput+0x22b/0x900 [ 32.678315][ T372] ____fput+0x15/0x20 [ 32.682297][ T372] task_work_run+0x127/0x190 [ 32.686880][ T372] exit_to_user_mode_loop+0xd0/0xe0 [ 32.692601][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 32.698057][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 32.703507][ T372] do_syscall_64+0x58/0xa0 [ 32.707909][ T372] ? clear_bhb_loop+0x50/0xa0 [ 32.712570][ T372] ? clear_bhb_loop+0x50/0xa0 [ 32.717229][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 32.723114][ T372] RIP: 0033:0x7fe5e6b87e99 [ 32.727524][ T372] 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 [ 32.747111][ T372] RSP: 002b:00007ffe1a481a18 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 32.755517][ T372] RAX: 0000000000000000 RBX: 00007ffe1a481b00 RCX: 00007fe5e6b87e99 [ 32.763472][ T372] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 32.771422][ T372] RBP: 0000000000007f0e R08: 0000000000000001 R09: 0000000000000000 [ 32.779397][ T372] R10: 0000001b32f20000 R11: 0000000000000246 R12: 0000000000000000 [ 32.787355][ T372] R13: 00007fe5e6e0ffac R14: 00007fe5e6e0ffa8 R15: 00007fe5e6e0ffa0 [ 32.795321][ T372] [ 32.798320][ T372] [ 32.800620][ T372] Allocated by task 372: [ 32.804848][ T372] __kasan_kmalloc+0xd4/0x100 [ 32.809504][ T372] __kmalloc+0x13d/0x2c0 [ 32.813738][ T372] l2tp_session_create+0x39/0xb60 [ 32.818740][ T372] pppol2tp_connect+0xbf5/0x1640 [ 32.823673][ T372] __sys_connect+0x3cb/0x450 [ 32.828248][ T372] __x64_sys_connect+0x7a/0x90 [ 32.832991][ T372] x64_sys_call+0x7c/0x9a0 [ 32.837410][ T372] do_syscall_64+0x4c/0xa0 [ 32.841820][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 32.847691][ T372] [ 32.850023][ T372] Freed by task 372: [ 32.853891][ T372] kasan_set_track+0x4a/0x70 [ 32.858479][ T372] kasan_set_free_info+0x23/0x40 [ 32.863396][ T372] ____kasan_slab_free+0x125/0x160 [ 32.868483][ T372] __kasan_slab_free+0x11/0x20 [ 32.873222][ T372] slab_free_freelist_hook+0xc2/0x190 [ 32.878573][ T372] kfree+0xc4/0x270 [ 32.882362][ T372] l2tp_session_put+0xaf/0x1a0 [ 32.887449][ T372] l2tp_session_delete+0x3a9/0x4a0 [ 32.892560][ T372] pppol2tp_release+0x169/0x2b0 [ 32.897511][ T372] sock_close+0xb8/0x200 [ 32.901895][ T372] __fput+0x22b/0x900 [ 32.906687][ T372] ____fput+0x15/0x20 [ 32.910764][ T372] task_work_run+0x127/0x190 [ 32.915362][ T372] exit_to_user_mode_loop+0xd0/0xe0 [ 32.920562][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 32.926204][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 32.931653][ T372] do_syscall_64+0x58/0xa0 [ 32.936064][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 32.941943][ T372] [ 32.944268][ T372] The buggy address belongs to the object at ffff888122a5b400 [ 32.944268][ T372] which belongs to the cache kmalloc-512 of size 512 [ 32.958411][ T372] The buggy address is located 336 bytes inside of [ 32.958411][ T372] 512-byte region [ffff888122a5b400, ffff888122a5b600) [ 32.971680][ T372] The buggy address belongs to the page: [ 32.977314][ T372] page:ffffea00048a9600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x122a58 [ 32.987552][ T372] head:ffffea00048a9600 order:2 compound_mapcount:0 compound_pincount:0 [ 32.995862][ T372] flags: 0x4000000000010200(slab|head|zone=1) [ 33.001921][ T372] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 33.010481][ T372] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 33.019130][ T372] page dumped because: kasan: bad access detected [ 33.025545][ T372] page_owner tracks the page as allocated [ 33.031390][ T372] page last allocated via order 2, migratetype Unmovable, gfp_mask 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 20, ts 32530728746, free_ts 31869573634 [ 33.049605][ T372] post_alloc_hook+0x192/0x1b0 [ 33.054371][ T372] prep_new_page+0x1c/0x110 [ 33.058851][ T372] get_page_from_freelist+0x2c3a/0x2cd0 [ 33.064384][ T372] __alloc_pages+0x1a2/0x460 [ 33.068963][ T372] new_slab+0xa0/0x4d0 [ 33.073008][ T372] ___slab_alloc+0x3ac/0x840 [ 33.077666][ T372] __slab_alloc+0x49/0x90 [ 33.081971][ T372] __kmalloc+0x16a/0x2c0 [ 33.086195][ T372] ___neigh_create+0x6fb/0x1c50 [ 33.091057][ T372] __neigh_create+0x31/0x40 [ 33.095538][ T372] ip6_finish_output2+0xae3/0x1790 [ 33.100624][ T372] __ip6_finish_output+0x621/0x7e0 [ 33.105709][ T372] ip6_finish_output+0x31/0x220 [ 33.110559][ T372] ip6_output+0x1fa/0x410 [ 33.114868][ T372] ndisc_send_skb+0x7f6/0xcf0 [ 33.119542][ T372] ndisc_send_rs+0x711/0x960 [ 33.124126][ T372] page last free stack trace: [ 33.128782][ T372] free_unref_page_prepare+0x5fa/0x600 [ 33.134231][ T372] free_unref_page+0xae/0x540 [ 33.138913][ T372] __free_pages+0x6c/0x100 [ 33.143941][ T372] free_pages+0x82/0x90 [ 33.148089][ T372] kasan_depopulate_vmalloc_pte+0x6b/0x90 [ 33.153814][ T372] __apply_to_page_range+0x8ca/0xc70 [ 33.159094][ T372] apply_to_existing_page_range+0x38/0x50 [ 33.165867][ T372] kasan_release_vmalloc+0x97/0xb0 [ 33.170984][ T372] __purge_vmap_area_lazy+0xa8d/0x1890 [ 33.176549][ T372] try_purge_vmap_area_lazy+0x38/0x50 [ 33.181935][ T372] free_vmap_area_noflush+0xa59/0xaa0 [ 33.187409][ T372] remove_vm_area+0x1c1/0x1e0 [ 33.192173][ T372] __vunmap+0x259/0x980 [ 33.196312][ T372] vfree+0x8b/0xc0 [ 33.200015][ T372] kcov_close+0x2b/0x50 [ 33.204159][ T372] __fput+0x22b/0x900 [ 33.208328][ T372] [ 33.210644][ T372] Memory state around the buggy address: [ 33.216257][ T372] ffff888122a5b400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.224304][ T372] ffff888122a5b480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.232391][ T372] >ffff888122a5b500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.240443][ T372] ^ [ 33.247118][ T372] ffff888122a5b580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.255167][ T372] ffff888122a5b600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.263214][ T372] ================================================================== [ 33.271373][ T372] Disabling lock debugging due to kernel taint