Warning: Permanently added '10.128.0.204' (ED25519) to the list of known hosts. 2026/07/24 05:42:58 parsed 1 programs 2026/07/24 05:42:58 serving rpc on tcp://39419 [ 25.473733][ T30] audit: type=1400 audit(1784871778.140:64): 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 [ 25.495408][ T30] audit: type=1400 audit(1784871778.150:65): 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 [ 26.414776][ T30] audit: type=1400 audit(1784871779.090:66): 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 [ 26.418123][ T299] cgroup: Unknown subsys name 'net' [ 26.437441][ T30] audit: type=1400 audit(1784871779.090:67): 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 [ 26.464828][ T30] audit: type=1400 audit(1784871779.120:68): 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 [ 26.465238][ T299] cgroup: Unknown subsys name 'devices' [ 26.635461][ T299] cgroup: Unknown subsys name 'hugetlb' [ 26.641159][ T299] cgroup: Unknown subsys name 'rlimit' [ 26.787116][ T30] audit: type=1400 audit(1784871779.460:69): 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 [ 26.810396][ T30] audit: type=1400 audit(1784871779.460:70): 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 [ 26.826622][ T304] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 26.831428][ T30] audit: type=1400 audit(1784871779.460:71): 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 [ 26.859639][ T30] audit: type=1400 audit(1784871779.460:72): 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 [ 26.879990][ T30] audit: type=1400 audit(1784871779.460:73): 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 [ 26.910571][ T299] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 27.341078][ T306] request_module fs-gadgetfs succeeded, but still no fs? [ 27.469977][ T315] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.477135][ T315] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.484633][ T315] device bridge_slave_0 entered promiscuous mode [ 27.492345][ T315] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.499518][ T315] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.506900][ T315] device bridge_slave_1 entered promiscuous mode [ 27.548656][ T315] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.555774][ T315] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.563046][ T315] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.570111][ T315] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.590025][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.597272][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.605651][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 27.613064][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.622728][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.630934][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.637999][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.649526][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.657685][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.664854][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.675841][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.684909][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.698351][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.710062][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.718168][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.725603][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.733532][ T315] device veth0_vlan entered promiscuous mode [ 27.744726][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.753797][ T315] device veth1_macvtap entered promiscuous mode [ 27.762634][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.773345][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.807869][ T315] syz-executor (315) used greatest stack depth: 20672 bytes left [ 28.324752][ T45] device bridge_slave_1 left promiscuous mode [ 28.330936][ T45] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.343885][ T45] device bridge_slave_0 left promiscuous mode [ 28.350062][ T45] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.358690][ T45] device veth1_macvtap left promiscuous mode [ 28.365145][ T45] device veth0_vlan left promiscuous mode 2026/07/24 05:43:01 executed programs: 0 [ 28.657910][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.665310][ T368] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.672886][ T368] device bridge_slave_0 entered promiscuous mode [ 28.680008][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.687299][ T368] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.694773][ T368] device bridge_slave_1 entered promiscuous mode [ 28.746109][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.753157][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.760454][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.767495][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.785891][ T319] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.793441][ T319] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.800734][ T319] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.809493][ T319] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.817731][ T319] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.824796][ T319] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.836144][ T319] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.844435][ T319] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.851466][ T319] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.863261][ T319] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 28.872540][ T319] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 28.886028][ T319] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 28.896765][ T319] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 28.904838][ T319] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 28.912234][ T319] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 28.920461][ T368] device veth0_vlan entered promiscuous mode [ 28.930179][ T319] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 28.939307][ T368] device veth1_macvtap entered promiscuous mode [ 28.948508][ T319] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.958361][ T319] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 28.980480][ T372] ================================================================== [ 28.988581][ T372] BUG: KASAN: use-after-free in mutex_lock+0x8e/0x1c0 [ 28.995361][ T372] Write of size 8 at addr ffff88811eb6f950 by task syz.2.17/372 [ 29.003013][ T372] [ 29.005344][ T372] CPU: 1 PID: 372 Comm: syz.2.17 Not tainted syzkaller #0 [ 29.012458][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 29.022530][ T372] Call Trace: [ 29.025815][ T372] [ 29.028769][ T372] __dump_stack+0x21/0x30 [ 29.033107][ T372] dump_stack_lvl+0x110/0x170 [ 29.037797][ T372] ? show_regs_print_info+0x20/0x20 [ 29.043004][ T372] ? load_image+0x3f0/0x3f0 [ 29.047516][ T372] print_address_description+0x7f/0x2c0 [ 29.053106][ T372] ? mutex_lock+0x8e/0x1c0 [ 29.057532][ T372] kasan_report+0x10f/0x150 [ 29.062064][ T372] ? mutex_lock+0x8e/0x1c0 [ 29.066491][ T372] kasan_check_range+0x249/0x2a0 [ 29.071442][ T372] __kasan_check_write+0x14/0x20 [ 29.076477][ T372] mutex_lock+0x8e/0x1c0 [ 29.080722][ T372] ? wait_for_completion_killable_timeout+0x10/0x10 [ 29.087322][ T372] ? l2tp_session_put+0xaf/0x1a0 [ 29.092283][ T372] ? l2tp_session_delete+0x3a9/0x4a0 [ 29.097581][ T372] pppol2tp_release+0x178/0x2b0 [ 29.102448][ T372] sock_close+0xb8/0x200 [ 29.106729][ T372] ? sock_mmap+0xa0/0xa0 [ 29.111017][ T372] __fput+0x22b/0x900 [ 29.115039][ T372] ____fput+0x15/0x20 [ 29.119053][ T372] task_work_run+0x127/0x190 [ 29.123649][ T372] exit_to_user_mode_loop+0xd0/0xe0 [ 29.128855][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 29.134317][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 29.139881][ T372] do_syscall_64+0x58/0xa0 [ 29.144301][ T372] ? clear_bhb_loop+0x50/0xa0 [ 29.148985][ T372] ? clear_bhb_loop+0x50/0xa0 [ 29.153660][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 29.159643][ T372] RIP: 0033:0x7f5492e8ae99 [ 29.164066][ 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 [ 29.183689][ T372] RSP: 002b:00007ffeb44ead78 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 29.192125][ T372] RAX: 0000000000000000 RBX: 00007ffeb44eae60 RCX: 00007f5492e8ae99 [ 29.200109][ T372] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 29.208094][ T372] RBP: 0000000000007111 R08: 0000000000000001 R09: 0000000000000000 [ 29.216069][ T372] R10: 0000001b32f20000 R11: 0000000000000246 R12: 0000000000000000 [ 29.224052][ T372] R13: 00007f5493112fac R14: 00007f5493112fa8 R15: 00007f5493112fa0 [ 29.232037][ T372] [ 29.235061][ T372] [ 29.237386][ T372] Allocated by task 372: [ 29.241625][ T372] __kasan_kmalloc+0xd4/0x100 [ 29.246311][ T372] __kmalloc+0x13d/0x2c0 [ 29.250573][ T372] l2tp_session_create+0x39/0xb60 [ 29.255608][ T372] pppol2tp_connect+0xbf5/0x1640 [ 29.260555][ T372] __sys_connect+0x3cb/0x450 [ 29.265161][ T372] __x64_sys_connect+0x7a/0x90 [ 29.269930][ T372] x64_sys_call+0x7c/0x9a0 [ 29.274352][ T372] do_syscall_64+0x4c/0xa0 [ 29.278806][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 29.284727][ T372] [ 29.287060][ T372] Freed by task 372: [ 29.290958][ T372] kasan_set_track+0x4a/0x70 [ 29.295567][ T372] kasan_set_free_info+0x23/0x40 [ 29.300527][ T372] ____kasan_slab_free+0x125/0x160 [ 29.305652][ T372] __kasan_slab_free+0x11/0x20 [ 29.310426][ T372] slab_free_freelist_hook+0xc2/0x190 [ 29.315808][ T372] kfree+0xc4/0x270 [ 29.319632][ T372] l2tp_session_put+0xaf/0x1a0 [ 29.324410][ T372] l2tp_session_delete+0x3a9/0x4a0 [ 29.329524][ T372] pppol2tp_release+0x169/0x2b0 [ 29.334379][ T372] sock_close+0xb8/0x200 [ 29.338622][ T372] __fput+0x22b/0x900 [ 29.342627][ T372] ____fput+0x15/0x20 [ 29.346613][ T372] task_work_run+0x127/0x190 [ 29.351204][ T372] exit_to_user_mode_loop+0xd0/0xe0 [ 29.356451][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 29.361909][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 29.367388][ T372] do_syscall_64+0x58/0xa0 [ 29.371901][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 29.377797][ T372] [ 29.380134][ T372] The buggy address belongs to the object at ffff88811eb6f800 [ 29.380134][ T372] which belongs to the cache kmalloc-512 of size 512 [ 29.394244][ T372] The buggy address is located 336 bytes inside of [ 29.394244][ T372] 512-byte region [ffff88811eb6f800, ffff88811eb6fa00) [ 29.407552][ T372] The buggy address belongs to the page: [ 29.413203][ T372] page:ffffea00047adb00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11eb6c [ 29.423461][ T372] head:ffffea00047adb00 order:2 compound_mapcount:0 compound_pincount:0 [ 29.431806][ T372] flags: 0x4000000000010200(slab|head|zone=1) [ 29.437896][ T372] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 29.446491][ T372] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 29.455073][ T372] page dumped because: kasan: bad access detected [ 29.461482][ T372] page_owner tracks the page as allocated [ 29.467207][ T372] 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 368, ts 28970078132, free_ts 27979538697 [ 29.487622][ T372] post_alloc_hook+0x192/0x1b0 [ 29.492413][ T372] prep_new_page+0x1c/0x110 [ 29.496937][ T372] get_page_from_freelist+0x2c3a/0x2cd0 [ 29.502489][ T372] __alloc_pages+0x1a2/0x460 [ 29.507081][ T372] new_slab+0xa0/0x4d0 [ 29.511172][ T372] ___slab_alloc+0x3ac/0x840 [ 29.515773][ T372] __slab_alloc+0x49/0x90 [ 29.520121][ T372] __kmalloc_track_caller+0x169/0x2c0 [ 29.525500][ T372] __alloc_skb+0x210/0x730 [ 29.529934][ T372] netlink_ack+0x35c/0xb10 [ 29.534356][ T372] netlink_rcv_skb+0x267/0x430 [ 29.539122][ T372] rtnetlink_rcv+0x1c/0x20 [ 29.543539][ T372] netlink_unicast+0x86c/0xa30 [ 29.548308][ T372] netlink_sendmsg+0x879/0xb80 [ 29.553088][ T372] __sys_sendto+0x46d/0x620 [ 29.557615][ T372] __x64_sys_sendto+0xe5/0x100 [ 29.562383][ T372] page last free stack trace: [ 29.567052][ T372] free_unref_page_prepare+0x5fa/0x600 [ 29.572518][ T372] free_unref_page+0xae/0x540 [ 29.577219][ T372] __free_pages+0x6c/0x100 [ 29.581656][ T372] free_pages+0x82/0x90 [ 29.585823][ T372] kasan_depopulate_vmalloc_pte+0x6b/0x90 [ 29.591547][ T372] __apply_to_page_range+0x8ca/0xc70 [ 29.596860][ T372] apply_to_existing_page_range+0x38/0x50 [ 29.602582][ T372] kasan_release_vmalloc+0x97/0xb0 [ 29.607713][ T372] __purge_vmap_area_lazy+0xa8d/0x1890 [ 29.613178][ T372] _vm_unmap_aliases+0x2f1/0x370 [ 29.618124][ T372] vm_unmap_aliases+0x19/0x20 [ 29.622803][ T372] change_page_attr_set_clr+0x317/0xc30 [ 29.628365][ T372] set_memory_x+0xd3/0x110 [ 29.632787][ T372] bpf_int_jit_compile+0xbf2a/0xc4c0 [ 29.638091][ T372] bpf_prog_select_runtime+0x6ea/0x9e0 [ 29.643569][ T372] bpf_prepare_filter+0x100e/0x11b0 [ 29.648796][ T372] [ 29.651118][ T372] Memory state around the buggy address: [ 29.656751][ T372] ffff88811eb6f800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.664829][ T372] ffff88811eb6f880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.672895][ T372] >ffff88811eb6f900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.680962][ T372] ^ [ 29.687633][ T372] ffff88811eb6f980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.695717][ T372] ffff88811eb6fa00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.703778][ T372] ================================================================== [ 29.711833][ T372] Disabling lock debugging due to kernel taint