Warning: Permanently added '10.128.1.14' (ED25519) to the list of known hosts. 2026/06/25 02:25:07 parsed 1 programs 2026/06/25 02:25:07 serving rpc on tcp://33665 [ 25.610527][ T24] audit: type=1400 audit(1782354307.720:64): avc: denied { node_bind } for pid=287 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 25.631318][ T24] audit: type=1400 audit(1782354307.720:65): avc: denied { create } for pid=287 comm="syz-execprog" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=rawip_socket permissive=1 [ 25.651116][ T24] audit: type=1400 audit(1782354307.720:66): avc: denied { module_request } for pid=287 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 [ 26.271286][ T24] audit: type=1400 audit(1782354308.380:67): avc: denied { mounton } for pid=293 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 [ 26.272376][ T293] cgroup: Unknown subsys name 'net' [ 26.299772][ T293] cgroup: Unknown subsys name 'devices' [ 26.300368][ T24] audit: type=1400 audit(1782354308.380:68): avc: denied { mount } for pid=293 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 [ 26.328128][ T24] audit: type=1400 audit(1782354308.400:69): avc: denied { unmount } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 26.441756][ T293] cgroup: Unknown subsys name 'hugetlb' [ 26.447356][ T293] cgroup: Unknown subsys name 'rlimit' [ 26.589236][ T24] audit: type=1400 audit(1782354308.690:70): avc: denied { setattr } for pid=293 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=253 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 26.612403][ T24] audit: type=1400 audit(1782354308.690:71): avc: denied { create } for pid=293 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 [ 26.630022][ T297] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 26.632935][ T24] audit: type=1400 audit(1782354308.690:72): avc: denied { write } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 26.661533][ T24] audit: type=1400 audit(1782354308.690:73): avc: denied { read } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 26.695175][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 27.066104][ T299] request_module fs-gadgetfs succeeded, but still no fs? [ 27.076623][ T299] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 27.361093][ T332] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.368142][ T332] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.375532][ T332] device bridge_slave_0 entered promiscuous mode [ 27.382350][ T332] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.389352][ T332] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.396729][ T332] device bridge_slave_1 entered promiscuous mode [ 27.427351][ T332] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.434393][ T332] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.441665][ T332] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.448673][ T332] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.464342][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.471841][ T333] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.478928][ T333] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.487860][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.496693][ T333] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.503721][ T333] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.514269][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.522383][ T333] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.529379][ T333] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.538688][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.547604][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.560219][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.570807][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.578861][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.586469][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.594678][ T332] device veth0_vlan entered promiscuous mode [ 27.603857][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.613005][ T332] device veth1_macvtap entered promiscuous mode [ 27.625929][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.634332][ T333] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/06/25 02:25:10 executed programs: 0 [ 28.086540][ T365] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.093757][ T365] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.101244][ T365] device bridge_slave_0 entered promiscuous mode [ 28.113404][ T365] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.120542][ T365] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.127797][ T365] device bridge_slave_1 entered promiscuous mode [ 28.176932][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 28.184356][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.193023][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 28.201710][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.209811][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.216841][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.224311][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 28.237910][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 28.246266][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.254625][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.261663][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.272276][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 28.280313][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 28.289711][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 28.304004][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 28.314828][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 28.323409][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 28.331512][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 28.339395][ T365] device veth0_vlan entered promiscuous mode [ 28.350255][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 28.359639][ T365] device veth1_macvtap entered promiscuous mode [ 28.368470][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 28.376856][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.386105][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 28.394371][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 28.417322][ T392] ================================================================== [ 28.425428][ T392] BUG: KASAN: use-after-free in pppol2tp_sock_to_session+0x1a0/0x1b0 [ 28.433474][ T392] Read of size 4 at addr ffff888111449800 by task syz.2.17/392 [ 28.440982][ T392] [ 28.443295][ T392] CPU: 0 PID: 392 Comm: syz.2.17 Not tainted syzkaller #0 [ 28.450373][ T392] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 28.460402][ T392] Call Trace: [ 28.463670][ T392] __dump_stack+0x21/0x24 [ 28.467972][ T392] dump_stack_lvl+0x1a7/0x208 [ 28.472617][ T392] ? show_regs_print_info+0x18/0x18 [ 28.477787][ T392] ? thaw_kernel_threads+0x220/0x220 [ 28.483041][ T392] print_address_description+0x7f/0x2c0 [ 28.488557][ T392] ? pppol2tp_sock_to_session+0x1a0/0x1b0 [ 28.494247][ T392] kasan_report+0x100/0x140 [ 28.498718][ T392] ? __kasan_check_write+0x14/0x20 [ 28.503797][ T392] ? pppol2tp_sock_to_session+0x1a0/0x1b0 [ 28.509483][ T392] __asan_report_load4_noabort+0x14/0x20 [ 28.515099][ T392] pppol2tp_sock_to_session+0x1a0/0x1b0 [ 28.520616][ T392] pppol2tp_release+0x150/0x2b0 [ 28.525436][ T392] sock_close+0xb8/0x200 [ 28.529644][ T392] ? sock_mmap+0xa0/0xa0 [ 28.533858][ T392] __fput+0x2dc/0x730 [ 28.537807][ T392] ____fput+0x15/0x20 [ 28.541758][ T392] task_work_run+0x127/0x190 [ 28.546318][ T392] exit_to_user_mode_loop+0xcb/0xe0 [ 28.551483][ T392] exit_to_user_mode_prepare+0x76/0xa0 [ 28.556913][ T392] syscall_exit_to_user_mode+0x1d/0x40 [ 28.562357][ T392] do_syscall_64+0x3d/0x40 [ 28.566743][ T392] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.572607][ T392] RIP: 0033:0x7f6b2965ae59 [ 28.576994][ T392] 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 [ 28.596573][ T392] RSP: 002b:00007ffd64b4aa78 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 28.604954][ T392] RAX: 0000000000000000 RBX: 00007ffd64b4ab60 RCX: 00007f6b2965ae59 [ 28.612896][ T392] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 28.620839][ T392] RBP: 0000000000006ee9 R08: 0000000000000001 R09: 0000000000000000 [ 28.628785][ T392] R10: 0000001b32c20000 R11: 0000000000000246 R12: 0000000000000000 [ 28.636735][ T392] R13: 00007f6b298d3fac R14: 00007f6b298d3fa8 R15: 00007f6b298d3fa0 [ 28.644687][ T392] [ 28.646988][ T392] Allocated by task 392: [ 28.651208][ T392] __kasan_kmalloc+0xd4/0x100 [ 28.655872][ T392] __kmalloc+0x19f/0x330 [ 28.660104][ T392] l2tp_session_create+0x39/0xb60 [ 28.665113][ T392] pppol2tp_connect+0xbf5/0x1640 [ 28.670028][ T392] __sys_connect+0x3ce/0x450 [ 28.674592][ T392] __x64_sys_connect+0x7a/0x90 [ 28.679330][ T392] do_syscall_64+0x31/0x40 [ 28.683728][ T392] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.689594][ T392] [ 28.691900][ T392] Freed by task 333: [ 28.695773][ T392] kasan_set_track+0x4a/0x70 [ 28.700340][ T392] kasan_set_free_info+0x23/0x40 [ 28.705252][ T392] ____kasan_slab_free+0x125/0x160 [ 28.710338][ T392] __kasan_slab_free+0x11/0x20 [ 28.715074][ T392] slab_free_freelist_hook+0xc5/0x190 [ 28.720423][ T392] kfree+0xc0/0x270 [ 28.724212][ T392] l2tp_session_put+0xb2/0x1a0 [ 28.728953][ T392] l2tp_session_delete+0x3a9/0x4a0 [ 28.734041][ T392] l2tp_tunnel_del_work+0x180/0x3d0 [ 28.739215][ T392] process_one_work+0x6fd/0xbc0 [ 28.744039][ T392] worker_thread+0xa8e/0x13c0 [ 28.748689][ T392] kthread+0x324/0x3b0 [ 28.752734][ T392] ret_from_fork+0x1f/0x30 [ 28.757120][ T392] [ 28.759427][ T392] The buggy address belongs to the object at ffff888111449800 [ 28.759427][ T392] which belongs to the cache kmalloc-512 of size 512 [ 28.773456][ T392] The buggy address is located 0 bytes inside of [ 28.773456][ T392] 512-byte region [ffff888111449800, ffff888111449a00) [ 28.786527][ T392] The buggy address belongs to the page: [ 28.792157][ T392] page:ffffea0004451200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x111448 [ 28.802366][ T392] head:ffffea0004451200 order:2 compound_mapcount:0 compound_pincount:0 [ 28.810685][ T392] flags: 0x4000000000010200(slab|head) [ 28.816129][ T392] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 28.824687][ T392] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 28.833244][ T392] page dumped because: kasan: bad access detected [ 28.839626][ T392] page_owner tracks the page as allocated [ 28.845321][ T392] page last allocated via order 2, migratetype Unmovable, gfp_mask 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 365, ts 28406685763, free_ts 28386269459 [ 28.863606][ T392] prep_new_page+0x176/0x190 [ 28.868168][ T392] get_page_from_freelist+0x225f/0x23f0 [ 28.873696][ T392] __alloc_pages_nodemask+0x29a/0x640 [ 28.879041][ T392] new_slab+0x84/0x3f0 [ 28.883087][ T392] ___slab_alloc+0x2f8/0x4c0 [ 28.887649][ T392] __slab_alloc+0x63/0xa0 [ 28.891951][ T392] __kmalloc+0x1f9/0x330 [ 28.896168][ T392] fib6_info_alloc+0x34/0xe0 [ 28.900732][ T392] ip6_route_info_create+0x4c7/0x1450 [ 28.906073][ T392] ip6_route_add+0x27/0x130 [ 28.910546][ T392] addrconf_permanent_addr+0x635/0x940 [ 28.915976][ T392] addrconf_notify+0x752/0xea0 [ 28.920713][ T392] raw_notifier_call_chain+0x90/0x100 [ 28.926058][ T392] __dev_notify_flags+0x2f4/0x5b0 [ 28.931055][ T392] dev_change_flags+0xe3/0x1a0 [ 28.935791][ T392] do_setlink+0xb19/0x29a0 [ 28.940178][ T392] page last free stack trace: [ 28.944830][ T392] __free_pages_ok+0x80b/0x830 [ 28.949738][ T392] __free_pages+0xd8/0x390 [ 28.954126][ T392] __free_slab+0xcf/0x190 [ 28.958425][ T392] unfreeze_partials+0x150/0x180 [ 28.963334][ T392] put_cpu_partial+0xc1/0x180 [ 28.967980][ T392] __slab_free+0x2c9/0x3a0 [ 28.972368][ T392] ___cache_free+0x10e/0x130 [ 28.976963][ T392] qlink_free+0x50/0x90 [ 28.981092][ T392] qlist_free_all+0x5f/0xb0 [ 28.985570][ T392] kasan_quarantine_reduce+0x14a/0x160 [ 28.991000][ T392] __kasan_slab_alloc+0x2f/0xe0 [ 28.995827][ T392] slab_post_alloc_hook+0x5d/0x2f0 [ 29.000912][ T392] kmem_cache_alloc+0x15a/0x2d0 [ 29.005735][ T392] sock_alloc_inode+0x1b/0xb0 [ 29.010386][ T392] new_inode_pseudo+0x62/0x210 [ 29.015122][ T392] __sock_create+0x12c/0x770 [ 29.019685][ T392] [ 29.021987][ T392] Memory state around the buggy address: [ 29.027590][ T392] ffff888111449700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.035624][ T392] ffff888111449780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.043660][ T392] >ffff888111449800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.051695][ T392] ^ [ 29.055737][ T392] ffff888111449880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.063773][ T392] ffff888111449900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.071804][ T392] ================================================================== [ 29.079836][ T392] Disabling lock debugging due to kernel taint [ 29.090546][ T392] ------------[ cut here ]------------ [ 29.096122][ T392] WARNING: CPU: 1 PID: 392 at net/l2tp/l2tp_ppp.c:156 pppol2tp_sock_to_session+0x167/0x1b0 [ 29.106231][ T392] Modules linked in: [ 29.110128][ T392] CPU: 0 PID: 392 Comm: syz.2.17 Tainted: G B syzkaller #0 [ 29.118782][ T392] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 29.128921][ T392] RIP: 0010:pppol2tp_sock_to_session+0x167/0x1b0 [ 29.135449][ T392] Code: 5d c3 e8 fc 0b 36 fd be 02 00 00 00 eb 0a e8 f0 0b 36 fd be 01 00 00 00 4c 89 f7 e8 a3 76 0f fe e9 0f ff ff ff e8 d9 0b 36 fd <0f> 0b 48 89 df e8 ef 00 00 00 eb bd e8 c8 0b 36 fd 4c 89 f7 be 03 [ 29.155222][ T392] RSP: 0018:ffffc900042efd68 EFLAGS: 00010293 [ 29.161654][ T392] RAX: ffffffff842e9627 RBX: ffff888110cfd000 RCX: ffff888110ee4f00 [ 29.169662][ T392] RDX: 0000000000000000 RSI: 000000000ac42aa0 RDI: 000000000c04eb7d [ 29.177851][ T392] RBP: ffffc900042efd88 R08: 0000000000000003 R09: 0000000000000004 [ 29.185925][ T392] R10: dffffc0000000000 R11: fffffbfff0dcf648 R12: dffffc0000000000 [ 29.193921][ T392] R13: dffffc0000000000 R14: 000000000ac42aa0 R15: ffff888111449800 [ 29.201913][ T392] FS: 0000555582d52500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 29.211101][ T392] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.217751][ T392] CR2: 00007f6b2a403000 CR3: 00000001113c7000 CR4: 00000000003506a0 [ 29.225765][ T392] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.233793][ T392] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.241814][ T392] Call Trace: [ 29.245141][ T392] pppol2tp_release+0x150/0x2b0 [ 29.249993][ T392] sock_close+0xb8/0x200 [ 29.254303][ T392] ? sock_mmap+0xa0/0xa0 [ 29.258547][ T392] __fput+0x2dc/0x730 [ 29.262666][ T392] ____fput+0x15/0x20 [ 29.266661][ T392] task_work_run+0x127/0x190 [ 29.271299][ T392] exit_to_user_mode_loop+0xcb/0xe0 [ 29.276506][ T392] exit_to_user_mode_prepare+0x76/0xa0 [ 29.281988][ T392] syscall_exit_to_user_mode+0x1d/0x40 [ 29.287464][ T392] do_syscall_64+0x3d/0x40 [ 29.292457][ T392] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 29.298342][ T392] RIP: 0033:0x7f6b2965ae59 [ 29.302797][ T392] 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 [ 29.322449][ T392] RSP: 002b:00007ffd64b4aa78 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 29.330905][ T392] RAX: 0000000000000000 RBX: 00007ffd64b4ab60 RCX: 00007f6b2965ae59 [ 29.338882][ T392] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 29.346939][ T392] RBP: 0000000000006ee9 R08: 0000000000000001 R09: 0000000000000000 [ 29.354932][ T392] R10: 0000001b32c20000 R11: 0000000000000246 R12: 0000000000000000 [ 29.363012][ T392] R13: 00007f6b298d3fac R14: 00007f6b298d3fa8 R15: 00007f6b298d3fa0 [ 29.371286][ T392] ---[ end trace 44d1c7c7ae224bca ]---