Warning: Permanently added '10.128.0.48' (ED25519) to the list of known hosts. 2026/06/11 08:29:03 parsed 1 programs [ 50.951244][ T28] audit: type=1400 audit(1781166543.274:64): avc: denied { node_bind } for pid=296 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 50.971974][ T28] audit: type=1400 audit(1781166543.274:65): avc: denied { module_request } for pid=296 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 [ 51.645801][ T28] audit: type=1400 audit(1781166543.964:66): 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 [ 51.646835][ T303] cgroup: Unknown subsys name 'net' [ 51.668480][ T28] audit: type=1400 audit(1781166543.964:67): 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 [ 51.695710][ T28] audit: type=1400 audit(1781166544.004:68): 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 [ 51.695860][ T303] cgroup: Unknown subsys name 'devices' [ 51.840526][ T303] cgroup: Unknown subsys name 'hugetlb' [ 51.846140][ T303] cgroup: Unknown subsys name 'rlimit' [ 51.983140][ T28] audit: type=1400 audit(1781166544.304:69): 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 [ 52.006319][ T28] audit: type=1400 audit(1781166544.304:70): 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 [ 52.026704][ T28] audit: type=1400 audit(1781166544.304:71): 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 [ 52.034745][ T306] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 52.047044][ T28] audit: type=1400 audit(1781166544.304:72): 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 Setting up swapspace version 1, size = 127995904 bytes [ 52.075793][ T28] audit: type=1400 audit(1781166544.304:73): 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 [ 52.140002][ T303] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 52.785813][ T310] request_module fs-gadgetfs succeeded, but still no fs? [ 52.975638][ T323] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.982724][ T323] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.990130][ T323] device bridge_slave_0 entered promiscuous mode [ 52.996964][ T323] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.004014][ T323] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.011745][ T323] device bridge_slave_1 entered promiscuous mode [ 53.046346][ T323] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.053411][ T323] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.060800][ T323] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.067819][ T323] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.084585][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.091897][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.100157][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 53.107593][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.116947][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.125218][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.132283][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.140794][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.149037][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.156052][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.167413][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.179144][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.192632][ T323] device veth0_vlan entered promiscuous mode [ 53.199417][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 53.207824][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 53.215944][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 53.223356][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 53.234626][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 53.243521][ T323] device veth1_macvtap entered promiscuous mode [ 53.252322][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 53.262118][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 53.296950][ T323] syz-executor (323) used greatest stack depth: 20704 bytes left 2026/06/11 08:29:06 executed programs: 0 [ 53.866515][ T371] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.873677][ T371] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.881281][ T371] device bridge_slave_0 entered promiscuous mode [ 53.888060][ T371] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.895123][ T371] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.903127][ T371] device bridge_slave_1 entered promiscuous mode [ 53.940430][ T371] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.947470][ T371] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.954854][ T371] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.961886][ T371] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.978704][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.986540][ T268] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.993757][ T268] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.005647][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 54.014083][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 54.022293][ T268] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.029320][ T268] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.037928][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 54.046282][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 54.054616][ T268] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.061674][ T268] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.072146][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 54.080200][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 54.088730][ T43] device bridge_slave_1 left promiscuous mode [ 54.095003][ T43] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.102582][ T43] device bridge_slave_0 left promiscuous mode [ 54.108673][ T43] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.116610][ T43] device veth1_macvtap left promiscuous mode [ 54.122756][ T43] device veth0_vlan left promiscuous mode [ 54.192595][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 54.200716][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 54.213969][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 54.223834][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 54.234375][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 54.242570][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 54.250465][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 54.257878][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 54.266046][ T371] device veth0_vlan entered promiscuous mode [ 54.275187][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 54.283336][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 54.292344][ T371] device veth1_macvtap entered promiscuous mode [ 54.301616][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 54.309288][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 54.317576][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 54.326888][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 54.335092][ T268] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 54.355270][ T375] ================================================================== [ 54.363358][ T375] BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 [ 54.370141][ T375] Write of size 8 at addr ffff88812c307150 by task syz.2.17/375 [ 54.377744][ T375] [ 54.380062][ T375] CPU: 1 PID: 375 Comm: syz.2.17 Not tainted syzkaller #0 [ 54.387145][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 54.397202][ T375] Call Trace: [ 54.400467][ T375] [ 54.403379][ T375] __dump_stack+0x21/0x24 [ 54.407685][ T375] dump_stack_lvl+0x110/0x170 [ 54.412337][ T375] ? __cfi_dump_stack_lvl+0x8/0x8 [ 54.417340][ T375] ? mutex_lock+0x86/0x1b0 [ 54.422524][ T375] print_address_description+0x71/0x200 [ 54.428051][ T375] print_report+0x4a/0x60 [ 54.432362][ T375] kasan_report+0x122/0x150 [ 54.436851][ T375] ? mutex_lock+0x86/0x1b0 [ 54.441251][ T375] kasan_check_range+0x249/0x2a0 [ 54.446182][ T375] __kasan_check_write+0x14/0x20 [ 54.451100][ T375] mutex_lock+0x86/0x1b0 [ 54.455325][ T375] ? __cfi_mutex_lock+0x10/0x10 [ 54.460162][ T375] ? l2tp_session_put+0xaf/0x1a0 [ 54.465080][ T375] ? l2tp_session_delete+0x3f0/0x4e0 [ 54.470342][ T375] pppol2tp_release+0x194/0x2d0 [ 54.475180][ T375] sock_close+0xf1/0x290 [ 54.479405][ T375] ? __cfi_sock_close+0x10/0x10 [ 54.484238][ T375] __fput+0x1fc/0x8f0 [ 54.488207][ T375] ____fput+0x15/0x20 [ 54.492168][ T375] task_work_run+0x1e1/0x250 [ 54.496743][ T375] ? __cfi_task_work_run+0x10/0x10 [ 54.501835][ T375] ? __cfi___close_range+0x10/0x10 [ 54.506926][ T375] exit_to_user_mode_loop+0x9b/0xb0 [ 54.512102][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 54.517537][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 54.522975][ T375] do_syscall_64+0x58/0xa0 [ 54.527375][ T375] ? clear_bhb_loop+0x30/0x80 [ 54.532027][ T375] ? clear_bhb_loop+0x30/0x80 [ 54.536688][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 54.542564][ T375] RIP: 0033:0x7f72ce39ce59 [ 54.547002][ T375] 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 [ 54.566583][ T375] RSP: 002b:00007ffc3aabcbe8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 54.575073][ T375] RAX: 0000000000000000 RBX: 00007ffc3aabccd0 RCX: 00007f72ce39ce59 [ 54.583114][ T375] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 54.591064][ T375] RBP: 000000000000d43e R08: 0000000000000001 R09: 0000000000000000 [ 54.599014][ T375] R10: 0000001b33220000 R11: 0000000000000246 R12: 0000000000000000 [ 54.606963][ T375] R13: 00007f72ce615fac R14: 00007f72ce615fa8 R15: 00007f72ce615fa0 [ 54.614928][ T375] [ 54.617923][ T375] [ 54.620224][ T375] Allocated by task 375: [ 54.624437][ T375] kasan_set_track+0x4b/0x70 [ 54.629009][ T375] kasan_save_alloc_info+0x25/0x30 [ 54.634098][ T375] __kasan_kmalloc+0x95/0xb0 [ 54.638668][ T375] __kmalloc+0xb1/0x1e0 [ 54.642796][ T375] l2tp_session_create+0x38/0xbe0 [ 54.647798][ T375] pppol2tp_connect+0xbef/0x1620 [ 54.652713][ T375] __sys_connect+0x3da/0x460 [ 54.657278][ T375] __x64_sys_connect+0x7a/0x90 [ 54.662019][ T375] x64_sys_call+0x88d/0x9a0 [ 54.666511][ T375] do_syscall_64+0x4c/0xa0 [ 54.670932][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 54.676821][ T375] [ 54.679135][ T375] Freed by task 375: [ 54.683004][ T375] kasan_set_track+0x4b/0x70 [ 54.687576][ T375] kasan_save_free_info+0x31/0x50 [ 54.692583][ T375] ____kasan_slab_free+0x132/0x180 [ 54.697680][ T375] __kasan_slab_free+0x11/0x20 [ 54.702438][ T375] slab_free_freelist_hook+0xc2/0x190 [ 54.707800][ T375] __kmem_cache_free+0xb7/0x1b0 [ 54.712637][ T375] kfree+0x6f/0xf0 [ 54.716335][ T375] l2tp_session_put+0xaf/0x1a0 [ 54.721076][ T375] l2tp_session_delete+0x3f0/0x4e0 [ 54.726164][ T375] pppol2tp_release+0x185/0x2d0 [ 54.730996][ T375] sock_close+0xf1/0x290 [ 54.735231][ T375] __fput+0x1fc/0x8f0 [ 54.739194][ T375] ____fput+0x15/0x20 [ 54.743161][ T375] task_work_run+0x1e1/0x250 [ 54.747741][ T375] exit_to_user_mode_loop+0x9b/0xb0 [ 54.752918][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 54.758358][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 54.763794][ T375] do_syscall_64+0x58/0xa0 [ 54.768192][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 54.774065][ T375] [ 54.776365][ T375] The buggy address belongs to the object at ffff88812c307000 [ 54.776365][ T375] which belongs to the cache kmalloc-512 of size 512 [ 54.790391][ T375] The buggy address is located 336 bytes inside of [ 54.790391][ T375] 512-byte region [ffff88812c307000, ffff88812c307200) [ 54.803645][ T375] [ 54.805948][ T375] The buggy address belongs to the physical page: [ 54.812344][ T375] page:ffffea0004b0c100 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12c304 [ 54.822560][ T375] head:ffffea0004b0c100 order:2 compound_mapcount:0 compound_pincount:0 [ 54.830862][ T375] flags: 0x4000000000010200(slab|head|zone=1) [ 54.836920][ T375] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 54.845483][ T375] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 54.854044][ T375] page dumped because: kasan: bad access detected [ 54.860452][ T375] page_owner tracks the page as allocated [ 54.866153][ T375] page last allocated via order 2, migratetype Unmovable, gfp_mask 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 268, tgid 268 (kworker/u4:3), ts 54345507993, free_ts 53639893934 [ 54.886623][ T375] post_alloc_hook+0x1f5/0x210 [ 54.891380][ T375] prep_new_page+0x1c/0x110 [ 54.895864][ T375] get_page_from_freelist+0x2d12/0x2d80 [ 54.901392][ T375] __alloc_pages+0x1fa/0x610 [ 54.905962][ T375] alloc_slab_page+0x6e/0xf0 [ 54.910616][ T375] new_slab+0x98/0x3d0 [ 54.914661][ T375] ___slab_alloc+0x6bd/0xb20 [ 54.919230][ T375] __slab_alloc+0x5e/0xa0 [ 54.923541][ T375] __kmem_cache_alloc_node+0x203/0x2c0 [ 54.928984][ T375] __kmalloc+0xa1/0x1e0 [ 54.933117][ T375] ___neigh_create+0x6f6/0x1e20 [ 54.937950][ T375] __neigh_create+0x31/0x40 [ 54.942430][ T375] ip_neigh_gw4+0x24c/0x310 [ 54.946913][ T375] ip_finish_output2+0x636/0xf10 [ 54.951827][ T375] __ip_finish_output+0x172/0x370 [ 54.956830][ T375] ip_finish_output+0x31/0x2b0 [ 54.961576][ T375] page last free stack trace: [ 54.966224][ T375] free_unref_page_prepare+0x7f8/0x800 [ 54.971663][ T375] free_unref_page+0x95/0x540 [ 54.976320][ T375] __free_pages+0x67/0x100 [ 54.980720][ T375] __vunmap+0x9c0/0xb80 [ 54.984855][ T375] vfree+0x61/0x90 [ 54.988555][ T375] kcov_close+0x2b/0x50 [ 54.992693][ T375] __fput+0x1fc/0x8f0 [ 54.996663][ T375] ____fput+0x15/0x20 [ 55.000713][ T375] task_work_run+0x1e1/0x250 [ 55.005282][ T375] do_exit+0xa35/0x2660 [ 55.009419][ T375] do_group_exit+0x225/0x2e0 [ 55.013991][ T375] get_signal+0x13b5/0x1520 [ 55.018477][ T375] arch_do_signal_or_restart+0xd1/0x1140 [ 55.024091][ T375] exit_to_user_mode_loop+0x7a/0xb0 [ 55.029268][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 55.034718][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 55.040154][ T375] [ 55.042457][ T375] Memory state around the buggy address: [ 55.048061][ T375] ffff88812c307000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 55.056102][ T375] ffff88812c307080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 55.064138][ T375] >ffff88812c307100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 55.072178][ T375] ^ [ 55.078825][ T375] ffff88812c307180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 55.086950][ T375] ffff88812c307200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 55.095071][ T375] ================================================================== [ 55.106536][ T375] Disabling lock debugging due to kernel taint