Warning: Permanently added '10.128.0.82' (ED25519) to the list of known hosts. 2026/06/11 06:48:17 parsed 1 programs [ 29.516853][ T28] audit: type=1400 audit(1781160497.348:64): 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 [ 29.537909][ T28] audit: type=1400 audit(1781160497.348:65): 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 [ 30.237638][ T28] audit: type=1400 audit(1781160498.068:66): avc: denied { mounton } for pid=303 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 [ 30.238632][ T303] cgroup: Unknown subsys name 'net' [ 30.265875][ T28] audit: type=1400 audit(1781160498.068:67): avc: denied { mount } for pid=303 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 [ 30.288079][ T28] audit: type=1400 audit(1781160498.098:68): avc: denied { unmount } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 30.288119][ T303] cgroup: Unknown subsys name 'devices' [ 30.433061][ T303] cgroup: Unknown subsys name 'hugetlb' [ 30.438695][ T303] cgroup: Unknown subsys name 'rlimit' [ 30.546211][ T28] audit: type=1400 audit(1781160498.378:69): avc: denied { setattr } for pid=303 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 [ 30.565480][ T306] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). Setting up swapspace version 1, size = 127995904 bytes [ 30.569423][ T28] audit: type=1400 audit(1781160498.378:70): avc: denied { create } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 30.598317][ T28] audit: type=1400 audit(1781160498.378:71): avc: denied { write } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 30.618610][ T28] audit: type=1400 audit(1781160498.378:72): avc: denied { read } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 30.639058][ T28] audit: type=1400 audit(1781160498.378:73): avc: denied { mounton } for pid=303 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 [ 30.644849][ T303] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 31.287088][ T308] request_module fs-gadgetfs succeeded, but still no fs? [ 31.619879][ T332] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.627234][ T332] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.634788][ T332] device bridge_slave_0 entered promiscuous mode [ 31.642767][ T332] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.649795][ T332] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.657337][ T332] device bridge_slave_1 entered promiscuous mode [ 31.694359][ T332] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.701424][ T332] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.708671][ T332] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.715749][ T332] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.732974][ T333] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.740290][ T333] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.747681][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 31.755503][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 31.765294][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 31.773551][ T333] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.780584][ T333] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.789269][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 31.797575][ T333] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.804623][ T333] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.816147][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 31.826340][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 31.839205][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 31.850324][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 31.858681][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 31.866591][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 31.874800][ T332] device veth0_vlan entered promiscuous mode [ 31.886674][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 31.896211][ T332] device veth1_macvtap entered promiscuous mode [ 31.905342][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 31.915496][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 31.943295][ T332] syz-executor (332) used greatest stack depth: 20928 bytes left 2026/06/11 06:48:20 executed programs: 0 [ 32.424993][ T372] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.432604][ T372] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.439924][ T372] device bridge_slave_0 entered promiscuous mode [ 32.450164][ T372] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.457386][ T372] bridge0: port 2(bridge_slave_1) entered disabled state [ 32.465119][ T372] device bridge_slave_1 entered promiscuous mode [ 32.504042][ T372] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.511398][ T372] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.518673][ T372] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.525725][ T372] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.543626][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.551630][ T333] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.558942][ T333] bridge0: port 2(bridge_slave_1) entered disabled state [ 32.568532][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 32.576924][ T333] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.583980][ T333] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.592609][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 32.600828][ T333] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.607875][ T333] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.623432][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 32.631545][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 32.639422][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 32.647935][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 32.660555][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 32.669169][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 32.679620][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 32.687740][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 32.696075][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 32.703719][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 32.712782][ T372] device veth0_vlan entered promiscuous mode [ 32.723855][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 32.732055][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 32.740941][ T372] device veth1_macvtap entered promiscuous mode [ 32.749615][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 32.757829][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 32.766247][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 32.776112][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 32.784371][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 32.807018][ T376] ================================================================== [ 32.815564][ T376] BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 [ 32.822332][ T376] Write of size 8 at addr ffff88812e9aad50 by task syz.2.17/376 [ 32.829965][ T376] [ 32.832279][ T376] CPU: 1 PID: 376 Comm: syz.2.17 Not tainted syzkaller #0 [ 32.839706][ T376] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 32.849768][ T376] Call Trace: [ 32.853026][ T376] [ 32.855936][ T376] __dump_stack+0x21/0x24 [ 32.860269][ T376] dump_stack_lvl+0x110/0x170 [ 32.864935][ T376] ? __cfi_dump_stack_lvl+0x8/0x8 [ 32.869979][ T376] ? mutex_lock+0x86/0x1b0 [ 32.874381][ T376] print_address_description+0x71/0x200 [ 32.879905][ T376] print_report+0x4a/0x60 [ 32.884385][ T376] kasan_report+0x122/0x150 [ 32.888867][ T376] ? mutex_lock+0x86/0x1b0 [ 32.893262][ T376] kasan_check_range+0x249/0x2a0 [ 32.898178][ T376] __kasan_check_write+0x14/0x20 [ 32.903183][ T376] mutex_lock+0x86/0x1b0 [ 32.907405][ T376] ? __cfi_mutex_lock+0x10/0x10 [ 32.912238][ T376] ? l2tp_session_put+0xaf/0x1a0 [ 32.917176][ T376] ? l2tp_session_delete+0x3f0/0x4e0 [ 32.922446][ T376] pppol2tp_release+0x194/0x2d0 [ 32.927282][ T376] sock_close+0xf1/0x290 [ 32.931514][ T376] ? __cfi_sock_close+0x10/0x10 [ 32.936356][ T376] __fput+0x1fc/0x8f0 [ 32.940322][ T376] ____fput+0x15/0x20 [ 32.944306][ T376] task_work_run+0x1e1/0x250 [ 32.948900][ T376] ? __cfi_task_work_run+0x10/0x10 [ 32.954026][ T376] ? __cfi___close_range+0x10/0x10 [ 32.959131][ T376] exit_to_user_mode_loop+0x9b/0xb0 [ 32.964320][ T376] exit_to_user_mode_prepare+0x87/0xd0 [ 32.969762][ T376] syscall_exit_to_user_mode+0x1a/0x30 [ 32.975296][ T376] do_syscall_64+0x58/0xa0 [ 32.979697][ T376] ? clear_bhb_loop+0x30/0x80 [ 32.984371][ T376] ? clear_bhb_loop+0x30/0x80 [ 32.989046][ T376] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 32.994958][ T376] RIP: 0033:0x7f8d4219ce59 [ 32.999357][ 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 [ 33.018968][ T376] RSP: 002b:00007ffc9728afd8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 33.027480][ T376] RAX: 0000000000000000 RBX: 00007ffc9728b0c0 RCX: 00007f8d4219ce59 [ 33.035443][ T376] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 33.043401][ T376] RBP: 0000000000008010 R08: 0000000000000001 R09: 0000000000000000 [ 33.051366][ T376] R10: 0000001b33320000 R11: 0000000000000246 R12: 0000000000000000 [ 33.059321][ T376] R13: 00007f8d42415fac R14: 00007f8d42415fa8 R15: 00007f8d42415fa0 [ 33.067275][ T376] [ 33.070280][ T376] [ 33.072624][ T376] Allocated by task 376: [ 33.076929][ T376] kasan_set_track+0x4b/0x70 [ 33.081682][ T376] kasan_save_alloc_info+0x25/0x30 [ 33.086858][ T376] __kasan_kmalloc+0x95/0xb0 [ 33.091430][ T376] __kmalloc+0xb1/0x1e0 [ 33.095562][ T376] l2tp_session_create+0x38/0xbe0 [ 33.100567][ T376] pppol2tp_connect+0xbef/0x1620 [ 33.105493][ T376] __sys_connect+0x3da/0x460 [ 33.110065][ T376] __x64_sys_connect+0x7a/0x90 [ 33.114856][ T376] x64_sys_call+0x88d/0x9a0 [ 33.119357][ T376] do_syscall_64+0x4c/0xa0 [ 33.123766][ T376] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 33.129832][ T376] [ 33.132135][ T376] Freed by task 376: [ 33.136011][ T376] kasan_set_track+0x4b/0x70 [ 33.140596][ T376] kasan_save_free_info+0x31/0x50 [ 33.145606][ T376] ____kasan_slab_free+0x132/0x180 [ 33.150706][ T376] __kasan_slab_free+0x11/0x20 [ 33.155479][ T376] slab_free_freelist_hook+0xc2/0x190 [ 33.160920][ T376] __kmem_cache_free+0xb7/0x1b0 [ 33.165788][ T376] kfree+0x6f/0xf0 [ 33.169606][ T376] l2tp_session_put+0xaf/0x1a0 [ 33.174371][ T376] l2tp_session_delete+0x3f0/0x4e0 [ 33.179469][ T376] pppol2tp_release+0x185/0x2d0 [ 33.184304][ T376] sock_close+0xf1/0x290 [ 33.188537][ T376] __fput+0x1fc/0x8f0 [ 33.192503][ T376] ____fput+0x15/0x20 [ 33.196470][ T376] task_work_run+0x1e1/0x250 [ 33.201042][ T376] exit_to_user_mode_loop+0x9b/0xb0 [ 33.206231][ T376] exit_to_user_mode_prepare+0x87/0xd0 [ 33.211846][ T376] syscall_exit_to_user_mode+0x1a/0x30 [ 33.217295][ T376] do_syscall_64+0x58/0xa0 [ 33.221698][ T376] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 33.227578][ T376] [ 33.229884][ T376] The buggy address belongs to the object at ffff88812e9aac00 [ 33.229884][ T376] which belongs to the cache kmalloc-512 of size 512 [ 33.244353][ T376] The buggy address is located 336 bytes inside of [ 33.244353][ T376] 512-byte region [ffff88812e9aac00, ffff88812e9aae00) [ 33.257612][ T376] [ 33.259920][ T376] The buggy address belongs to the physical page: [ 33.266750][ T376] page:ffffea0004ba6a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12e9a8 [ 33.277089][ T376] head:ffffea0004ba6a00 order:2 compound_mapcount:0 compound_pincount:0 [ 33.285416][ T376] flags: 0x4000000000010200(slab|head|zone=1) [ 33.291615][ T376] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 33.300179][ T376] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 33.308745][ T376] page dumped because: kasan: bad access detected [ 33.315155][ T376] page_owner tracks the page as allocated [ 33.320851][ 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 376, tgid 376 (syz.2.17), ts 32806196886, free_ts 32036529963 [ 33.343059][ T376] post_alloc_hook+0x1f5/0x210 [ 33.347832][ T376] prep_new_page+0x1c/0x110 [ 33.352330][ T376] get_page_from_freelist+0x2d12/0x2d80 [ 33.357861][ T376] __alloc_pages+0x1fa/0x610 [ 33.362444][ T376] alloc_slab_page+0x6e/0xf0 [ 33.367074][ T376] new_slab+0x98/0x3d0 [ 33.371132][ T376] ___slab_alloc+0x6bd/0xb20 [ 33.375720][ T376] __slab_alloc+0x5e/0xa0 [ 33.380121][ T376] __kmem_cache_alloc_node+0x203/0x2c0 [ 33.385565][ T376] kmalloc_trace+0x29/0xb0 [ 33.390067][ T376] l2tp_tunnel_create+0x97/0x430 [ 33.395001][ T376] pppol2tp_connect+0x7e2/0x1620 [ 33.399923][ T376] __sys_connect+0x3da/0x460 [ 33.404496][ T376] __x64_sys_connect+0x7a/0x90 [ 33.409243][ T376] x64_sys_call+0x88d/0x9a0 [ 33.413731][ T376] do_syscall_64+0x4c/0xa0 [ 33.418140][ T376] page last free stack trace: [ 33.422797][ T376] free_unref_page_prepare+0x7f8/0x800 [ 33.428241][ T376] free_unref_page+0x95/0x540 [ 33.432904][ T376] __free_pages+0x67/0x100 [ 33.437303][ T376] __vunmap+0x9c0/0xb80 [ 33.441540][ T376] vfree+0x61/0x90 [ 33.445246][ T376] kcov_close+0x2b/0x50 [ 33.449384][ T376] __fput+0x1fc/0x8f0 [ 33.453348][ T376] ____fput+0x15/0x20 [ 33.457315][ T376] task_work_run+0x1e1/0x250 [ 33.461891][ T376] do_exit+0xa35/0x2660 [ 33.466033][ T376] do_group_exit+0x225/0x2e0 [ 33.470606][ T376] get_signal+0x13b5/0x1520 [ 33.475093][ T376] arch_do_signal_or_restart+0xd1/0x1140 [ 33.480709][ T376] exit_to_user_mode_loop+0x7a/0xb0 [ 33.486128][ T376] exit_to_user_mode_prepare+0x87/0xd0 [ 33.491575][ T376] syscall_exit_to_user_mode+0x1a/0x30 [ 33.497014][ T376] [ 33.499332][ T376] Memory state around the buggy address: [ 33.504942][ T376] ffff88812e9aac00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.513014][ T376] ffff88812e9aac80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.521060][ T376] >ffff88812e9aad00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.529103][ T376] ^ [ 33.535774][ T376] ffff88812e9aad80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.544099][ T376] ffff88812e9aae00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.552137][ T376] ================================================================== [ 33.566879][ T376] Disabling lock debugging due to kernel taint