Warning: Permanently added '10.128.0.196' (ED25519) to the list of known hosts. 2026/06/28 17:26:26 parsed 1 programs 2026/06/28 17:26:26 serving rpc on tcp://40399 [ 24.863563][ T24] audit: type=1400 audit(1782667586.709:64): 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 [ 24.884616][ T24] audit: type=1400 audit(1782667586.709:65): 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 [ 24.904258][ T24] audit: type=1400 audit(1782667586.709:66): 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 [ 25.468834][ T24] audit: type=1400 audit(1782667587.319:67): 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 [ 25.469905][ T293] cgroup: Unknown subsys name 'net' [ 25.491758][ T24] audit: type=1400 audit(1782667587.319:68): 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 [ 25.519264][ T24] audit: type=1400 audit(1782667587.349:69): 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 [ 25.519451][ T293] cgroup: Unknown subsys name 'devices' [ 25.597992][ T293] cgroup: Unknown subsys name 'hugetlb' [ 25.603600][ T293] cgroup: Unknown subsys name 'rlimit' [ 25.716665][ T24] audit: type=1400 audit(1782667587.569:70): 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 [ 25.739848][ T24] audit: type=1400 audit(1782667587.569:71): 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 [ 25.745295][ T297] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 25.760527][ T24] audit: type=1400 audit(1782667587.569:72): 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 [ 25.789436][ T24] audit: type=1400 audit(1782667587.569:73): 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 [ 25.817932][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 26.232059][ T305] request_module fs-gadgetfs succeeded, but still no fs? [ 26.242070][ T305] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 26.376002][ T319] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.383189][ T319] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.390666][ T319] device bridge_slave_0 entered promiscuous mode [ 26.397614][ T319] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.404893][ T319] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.412320][ T319] device bridge_slave_1 entered promiscuous mode [ 26.443229][ T319] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.450301][ T319] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.457583][ T319] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.464599][ T319] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.480762][ T112] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.488310][ T112] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.495517][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 26.503333][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.512857][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.521000][ T112] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.528157][ T112] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.536744][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.544933][ T112] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.551964][ T112] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.563878][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.572934][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.586823][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.598836][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.606923][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.614303][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.622898][ T319] device veth0_vlan entered promiscuous mode [ 26.634211][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.643750][ T319] device veth1_macvtap entered promiscuous mode [ 26.653460][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.663500][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/06/28 17:26:29 executed programs: 0 [ 27.237407][ T376] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.244452][ T376] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.251967][ T376] device bridge_slave_0 entered promiscuous mode [ 27.258856][ T376] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.265864][ T376] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.273318][ T376] device bridge_slave_1 entered promiscuous mode [ 27.308395][ T376] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.315429][ T376] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.322858][ T376] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.329891][ T376] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.344802][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.352326][ T112] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.359887][ T112] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.368657][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 27.377446][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.385543][ T112] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.392722][ T112] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.401359][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 27.409801][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.418203][ T112] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.425219][ T112] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.436161][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 27.444275][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.453572][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 27.461890][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.474084][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 27.482537][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.493057][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 27.501116][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.509277][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.516886][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.524839][ T376] device veth0_vlan entered promiscuous mode [ 27.534192][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 27.542353][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.551205][ T376] device veth1_macvtap entered promiscuous mode [ 27.560156][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 27.568083][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 27.576232][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.585389][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 27.593715][ T112] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.619577][ T380] ================================================================== [ 27.627696][ T380] BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 [ 27.634350][ T380] Write of size 8 at addr ffff888110e12150 by task syz.2.17/380 [ 27.641949][ T380] [ 27.644267][ T380] CPU: 1 PID: 380 Comm: syz.2.17 Not tainted syzkaller #0 [ 27.651392][ T380] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 27.661428][ T380] Call Trace: [ 27.664702][ T380] __dump_stack+0x21/0x24 [ 27.669017][ T380] dump_stack_lvl+0x1a7/0x208 [ 27.673673][ T380] ? show_regs_print_info+0x18/0x18 [ 27.678881][ T380] ? thaw_kernel_threads+0x220/0x220 [ 27.684142][ T380] ? debug_smp_processor_id+0x17/0x20 [ 27.689493][ T380] print_address_description+0x7f/0x2c0 [ 27.695022][ T380] ? mutex_lock+0x85/0xf0 [ 27.699334][ T380] kasan_report+0x100/0x140 [ 27.703813][ T380] ? mutex_lock+0x85/0xf0 [ 27.708305][ T380] kasan_check_range+0x249/0x2a0 [ 27.713326][ T380] __kasan_check_write+0x14/0x20 [ 27.718276][ T380] mutex_lock+0x85/0xf0 [ 27.722488][ T380] ? mutex_trylock+0xb0/0xb0 [ 27.727068][ T380] ? l2tp_session_put+0xb2/0x1a0 [ 27.731993][ T380] ? l2tp_session_delete+0x3a9/0x4a0 [ 27.737709][ T380] pppol2tp_release+0x178/0x2b0 [ 27.742553][ T380] sock_close+0xb8/0x200 [ 27.746790][ T380] ? sock_mmap+0xa0/0xa0 [ 27.751047][ T380] __fput+0x2dc/0x730 [ 27.755024][ T380] ____fput+0x15/0x20 [ 27.758996][ T380] task_work_run+0x127/0x190 [ 27.763661][ T380] exit_to_user_mode_loop+0xcb/0xe0 [ 27.768950][ T380] exit_to_user_mode_prepare+0x76/0xa0 [ 27.774406][ T380] syscall_exit_to_user_mode+0x1d/0x40 [ 27.779845][ T380] do_syscall_64+0x3d/0x40 [ 27.784241][ T380] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 27.790116][ T380] RIP: 0033:0x7f200cfeee59 [ 27.794510][ T380] 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 [ 27.814679][ T380] RSP: 002b:00007ffc7c8d4d58 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 27.823086][ T380] RAX: 0000000000000000 RBX: 00007ffc7c8d4e40 RCX: 00007f200cfeee59 [ 27.831049][ T380] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 27.839028][ T380] RBP: 0000000000006bd2 R08: 0000000000000001 R09: 0000000000000000 [ 27.847095][ T380] R10: 0000001b33620000 R11: 0000000000000246 R12: 0000000000000000 [ 27.855051][ T380] R13: 00007f200d267fac R14: 00007f200d267fa8 R15: 00007f200d267fa0 [ 27.863004][ T380] [ 27.865316][ T380] Allocated by task 380: [ 27.869554][ T380] __kasan_kmalloc+0xd4/0x100 [ 27.874221][ T380] __kmalloc+0x19f/0x330 [ 27.878796][ T380] l2tp_session_create+0x39/0xb60 [ 27.883808][ T380] pppol2tp_connect+0xbf5/0x1640 [ 27.888727][ T380] __sys_connect+0x3ce/0x450 [ 27.893293][ T380] __x64_sys_connect+0x7a/0x90 [ 27.898034][ T380] do_syscall_64+0x31/0x40 [ 27.902428][ T380] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 27.908294][ T380] [ 27.910602][ T380] Freed by task 380: [ 27.914475][ T380] kasan_set_track+0x4a/0x70 [ 27.919313][ T380] kasan_set_free_info+0x23/0x40 [ 27.924236][ T380] ____kasan_slab_free+0x125/0x160 [ 27.929339][ T380] __kasan_slab_free+0x11/0x20 [ 27.934094][ T380] slab_free_freelist_hook+0xc5/0x190 [ 27.939451][ T380] kfree+0xc0/0x270 [ 27.943240][ T380] l2tp_session_put+0xb2/0x1a0 [ 27.947988][ T380] l2tp_session_delete+0x3a9/0x4a0 [ 27.953188][ T380] pppol2tp_release+0x169/0x2b0 [ 27.958036][ T380] sock_close+0xb8/0x200 [ 27.962272][ T380] __fput+0x2dc/0x730 [ 27.966230][ T380] ____fput+0x15/0x20 [ 27.970197][ T380] task_work_run+0x127/0x190 [ 27.975213][ T380] exit_to_user_mode_loop+0xcb/0xe0 [ 27.980400][ T380] exit_to_user_mode_prepare+0x76/0xa0 [ 27.985844][ T380] syscall_exit_to_user_mode+0x1d/0x40 [ 27.991281][ T380] do_syscall_64+0x3d/0x40 [ 27.995682][ T380] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.001552][ T380] [ 28.003860][ T380] The buggy address belongs to the object at ffff888110e12000 [ 28.003860][ T380] which belongs to the cache kmalloc-512 of size 512 [ 28.017915][ T380] The buggy address is located 336 bytes inside of [ 28.017915][ T380] 512-byte region [ffff888110e12000, ffff888110e12200) [ 28.032613][ T380] The buggy address belongs to the page: [ 28.038425][ T380] page:ffffea0004438400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x110e10 [ 28.048657][ T380] head:ffffea0004438400 order:2 compound_mapcount:0 compound_pincount:0 [ 28.057180][ T380] flags: 0x4000000000010200(slab|head) [ 28.062631][ T380] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 28.071202][ T380] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 28.079874][ T380] page dumped because: kasan: bad access detected [ 28.086265][ T380] page_owner tracks the page as allocated [ 28.091970][ T380] 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 380, ts 27619396754, free_ts 27616796889 [ 28.112458][ T380] prep_new_page+0x176/0x190 [ 28.117033][ T380] get_page_from_freelist+0x225f/0x23f0 [ 28.122553][ T380] __alloc_pages_nodemask+0x29a/0x640 [ 28.127902][ T380] new_slab+0x84/0x3f0 [ 28.131944][ T380] ___slab_alloc+0x2f8/0x4c0 [ 28.136507][ T380] __slab_alloc+0x63/0xa0 [ 28.140815][ T380] __kmalloc+0x1f9/0x330 [ 28.145031][ T380] l2tp_session_create+0x39/0xb60 [ 28.150040][ T380] pppol2tp_connect+0xbf5/0x1640 [ 28.154957][ T380] __sys_connect+0x3ce/0x450 [ 28.159536][ T380] __x64_sys_connect+0x7a/0x90 [ 28.164277][ T380] do_syscall_64+0x31/0x40 [ 28.168670][ T380] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.174911][ T380] page last free stack trace: [ 28.179575][ T380] __free_pages_ok+0x80b/0x830 [ 28.184313][ T380] __free_pages+0xd8/0x390 [ 28.188707][ T380] __free_slab+0xcf/0x190 [ 28.193139][ T380] unfreeze_partials+0x150/0x180 [ 28.198055][ T380] put_cpu_partial+0xc1/0x180 [ 28.202753][ T380] __slab_free+0x2c9/0x3a0 [ 28.207239][ T380] ___cache_free+0x10e/0x130 [ 28.211849][ T380] qlink_free+0x50/0x90 [ 28.220815][ T380] qlist_free_all+0x5f/0xb0 [ 28.225425][ T380] kasan_quarantine_reduce+0x14a/0x160 [ 28.231406][ T380] __kasan_slab_alloc+0x2f/0xe0 [ 28.236240][ T380] slab_post_alloc_hook+0x5d/0x2f0 [ 28.241514][ T380] kmem_cache_alloc+0x15a/0x2d0 [ 28.246342][ T380] dup_task_struct+0x57/0xbd0 [ 28.251000][ T380] copy_process+0x5dd/0x3320 [ 28.255565][ T380] kernel_clone+0x233/0x950 [ 28.260042][ T380] [ 28.262358][ T380] Memory state around the buggy address: [ 28.267979][ T380] ffff888110e12000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.276198][ T380] ffff888110e12080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.284352][ T380] >ffff888110e12100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.292392][ T380] ^ [ 28.299049][ T380] ffff888110e12180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.307174][ T380] ffff888110e12200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.315205][ T380] ================================================================== [ 28.323245][ T380] Disabling lock debugging due to kernel taint