Warning: Permanently added '10.128.0.61' (ED25519) to the list of known hosts. 2026/08/19 00:49:26 parsed 1 programs 2026/08/19 00:49:26 serving rpc on tcp://35307 [ 22.851071][ T28] audit: type=1400 audit(1787100566.947:64): avc: denied { node_bind } for pid=294 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 22.872682][ T28] audit: type=1400 audit(1787100566.947:65): avc: denied { module_request } for pid=294 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 [ 23.675875][ T28] audit: type=1400 audit(1787100567.767:66): avc: denied { mounton } for pid=300 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 [ 23.676873][ T300] cgroup: Unknown subsys name 'net' [ 23.698538][ T28] audit: type=1400 audit(1787100567.767:67): avc: denied { mount } for pid=300 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 [ 23.725856][ T28] audit: type=1400 audit(1787100567.797:68): avc: denied { unmount } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 23.726001][ T300] cgroup: Unknown subsys name 'devices' [ 23.878923][ T300] cgroup: Unknown subsys name 'hugetlb' [ 23.884541][ T300] cgroup: Unknown subsys name 'rlimit' [ 24.022149][ T28] audit: type=1400 audit(1787100568.117:69): avc: denied { setattr } for pid=300 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 [ 24.045747][ T28] audit: type=1400 audit(1787100568.117:70): avc: denied { create } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.066876][ T28] audit: type=1400 audit(1787100568.117:71): avc: denied { write } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.075799][ T305] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 24.087187][ T28] audit: type=1400 audit(1787100568.117:72): avc: denied { read } for pid=300 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 [ 24.116182][ T28] audit: type=1400 audit(1787100568.117:73): avc: denied { mounton } for pid=300 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 [ 24.149201][ T300] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 24.861340][ T307] request_module fs-gadgetfs succeeded, but still no fs? [ 25.265902][ T336] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.273457][ T336] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.281007][ T336] device bridge_slave_0 entered promiscuous mode [ 25.287891][ T336] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.294998][ T336] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.302438][ T336] device bridge_slave_1 entered promiscuous mode [ 25.341123][ T336] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.348190][ T336] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.355528][ T336] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.362592][ T336] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.381691][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.389311][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.396505][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.405861][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.414142][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.421312][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.430696][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.439093][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.446202][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.460923][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.469999][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.483187][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.494395][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.502577][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.510283][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.518752][ T336] device veth0_vlan entered promiscuous mode [ 25.529712][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.538817][ T336] device veth1_macvtap entered promiscuous mode [ 25.548670][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.558550][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 25.592145][ T336] syz-executor (336) used greatest stack depth: 21024 bytes left 2026/08/19 00:49:30 executed programs: 0 [ 25.992696][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.999826][ T370] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.008124][ T370] device bridge_slave_0 entered promiscuous mode [ 26.015308][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.022436][ T370] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.029873][ T370] device bridge_slave_1 entered promiscuous mode [ 26.070861][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.077948][ T370] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.085205][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.092348][ T370] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.114034][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.121805][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.129170][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.142460][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.150686][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.157731][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.166387][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.174749][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.181820][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.198396][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.208434][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.225340][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.238708][ T370] device veth0_vlan entered promiscuous mode [ 26.247433][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.255541][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.263645][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.273909][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 26.282134][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.291162][ T370] device veth1_macvtap entered promiscuous mode [ 26.300036][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 26.308036][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 26.316164][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.328074][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 26.336360][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.363241][ T375] ================================================================== [ 26.371355][ T375] BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 [ 26.378124][ T375] Write of size 8 at addr ffff88810f168950 by task syz.2.17/375 [ 26.385785][ T375] [ 26.388114][ T375] CPU: 1 PID: 375 Comm: syz.2.17 Not tainted syzkaller #0 [ 26.395314][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 26.405459][ T375] Call Trace: [ 26.408756][ T375] [ 26.411684][ T375] __dump_stack+0x21/0x24 [ 26.416008][ T375] dump_stack_lvl+0x110/0x170 [ 26.420678][ T375] ? __cfi_dump_stack_lvl+0x8/0x8 [ 26.425718][ T375] ? mutex_lock+0x86/0x1b0 [ 26.430138][ T375] print_address_description+0x71/0x200 [ 26.435686][ T375] print_report+0x4a/0x60 [ 26.440020][ T375] kasan_report+0x122/0x150 [ 26.444528][ T375] ? mutex_lock+0x86/0x1b0 [ 26.448952][ T375] kasan_check_range+0x249/0x2a0 [ 26.453895][ T375] __kasan_check_write+0x14/0x20 [ 26.458831][ T375] mutex_lock+0x86/0x1b0 [ 26.463079][ T375] ? __cfi_mutex_lock+0x10/0x10 [ 26.467932][ T375] ? kfree+0x6f/0xf0 [ 26.471829][ T375] ? l2tp_session_put+0xaf/0x1a0 [ 26.476766][ T375] ? l2tp_session_delete+0x3df/0x4d0 [ 26.482051][ T375] pppol2tp_release+0x178/0x2b0 [ 26.487000][ T375] sock_close+0xc9/0x220 [ 26.491248][ T375] ? __cfi_sock_close+0x10/0x10 [ 26.496111][ T375] __fput+0x1fd/0x8f0 [ 26.500099][ T375] ____fput+0x15/0x20 [ 26.504094][ T375] task_work_run+0x1e1/0x250 [ 26.508730][ T375] ? __cfi_task_work_run+0x10/0x10 [ 26.513844][ T375] ? __cfi___close_range+0x10/0x10 [ 26.518958][ T375] exit_to_user_mode_loop+0x9b/0xb0 [ 26.524164][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 26.529629][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 26.535287][ T375] do_syscall_64+0x58/0xa0 [ 26.539751][ T375] ? clear_bhb_loop+0x30/0x80 [ 26.544438][ T375] ? clear_bhb_loop+0x30/0x80 [ 26.549141][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.555052][ T375] RIP: 0033:0x7f16cf99e0d9 [ 26.559475][ 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 [ 26.579613][ T375] RSP: 002b:00007ffc7fba5e18 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 26.588046][ T375] RAX: 0000000000000000 RBX: 00007ffc7fba5f00 RCX: 00007f16cf99e0d9 [ 26.596016][ T375] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 26.603984][ T375] RBP: 00000000000066de R08: 0000000000000001 R09: 0000000000000000 [ 26.612129][ T375] R10: 0000001b33120000 R11: 0000000000000246 R12: 0000000000000000 [ 26.620107][ T375] R13: 00007f16cfc25fac R14: 00007f16cfc25fa8 R15: 00007f16cfc25fa0 [ 26.628136][ T375] [ 26.631163][ T375] [ 26.633482][ T375] Allocated by task 375: [ 26.637720][ T375] kasan_set_track+0x4b/0x70 [ 26.642405][ T375] kasan_save_alloc_info+0x1f/0x30 [ 26.647541][ T375] __kasan_kmalloc+0x95/0xb0 [ 26.652133][ T375] __kmalloc+0xb4/0x1e0 [ 26.656291][ T375] l2tp_session_create+0x38/0xbd0 [ 26.661313][ T375] pppol2tp_connect+0xbf5/0x1640 [ 26.666251][ T375] __sys_connect+0x3da/0x460 [ 26.670840][ T375] __x64_sys_connect+0x7a/0x90 [ 26.675608][ T375] x64_sys_call+0x88d/0x9a0 [ 26.680110][ T375] do_syscall_64+0x4c/0xa0 [ 26.684527][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.690426][ T375] [ 26.692744][ T375] Freed by task 375: [ 26.696629][ T375] kasan_set_track+0x4b/0x70 [ 26.701222][ T375] kasan_save_free_info+0x2b/0x40 [ 26.706241][ T375] ____kasan_slab_free+0x132/0x180 [ 26.711354][ T375] __kasan_slab_free+0x11/0x20 [ 26.716117][ T375] slab_free_freelist_hook+0xc2/0x190 [ 26.721516][ T375] __kmem_cache_free+0xb7/0x1b0 [ 26.726372][ T375] kfree+0x6f/0xf0 [ 26.730113][ T375] l2tp_session_put+0xaf/0x1a0 [ 26.734876][ T375] l2tp_session_delete+0x3df/0x4d0 [ 26.740029][ T375] pppol2tp_release+0x169/0x2b0 [ 26.744883][ T375] sock_close+0xc9/0x220 [ 26.749135][ T375] __fput+0x1fd/0x8f0 [ 26.753117][ T375] ____fput+0x15/0x20 [ 26.757097][ T375] task_work_run+0x1e1/0x250 [ 26.761692][ T375] exit_to_user_mode_loop+0x9b/0xb0 [ 26.766896][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 26.772365][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 26.777821][ T375] do_syscall_64+0x58/0xa0 [ 26.782236][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.788129][ T375] [ 26.790459][ T375] The buggy address belongs to the object at ffff88810f168800 [ 26.790459][ T375] which belongs to the cache kmalloc-512 of size 512 [ 26.805122][ T375] The buggy address is located 336 bytes inside of [ 26.805122][ T375] 512-byte region [ffff88810f168800, ffff88810f168a00) [ 26.818412][ T375] [ 26.820771][ T375] The buggy address belongs to the physical page: [ 26.827175][ T375] page:ffffea00043c5a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10f168 [ 26.837411][ T375] head:ffffea00043c5a00 order:2 compound_mapcount:0 compound_pincount:0 [ 26.845731][ T375] flags: 0x4000000000010200(slab|head|zone=1) [ 26.851813][ T375] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 26.860392][ T375] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 26.868961][ T375] page dumped because: kasan: bad access detected [ 26.875454][ T375] page_owner tracks the page as allocated [ 26.881769][ T375] 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 370, tgid 370 (syz-executor), ts 26355933386, free_ts 25739782139 [ 26.904340][ T375] post_alloc_hook+0x1f5/0x210 [ 26.909115][ T375] prep_new_page+0x1c/0x110 [ 26.913619][ T375] get_page_from_freelist+0x2ca9/0x2d20 [ 26.919165][ T375] __alloc_pages+0x1fa/0x610 [ 26.923786][ T375] alloc_slab_page+0x6e/0xf0 [ 26.928381][ T375] new_slab+0x98/0x3e0 [ 26.932469][ T375] ___slab_alloc+0x70f/0xb70 [ 26.937074][ T375] __slab_alloc+0x5e/0xa0 [ 26.941410][ T375] __kmem_cache_alloc_node+0x204/0x2d0 [ 26.946872][ T375] kmalloc_trace+0x29/0xb0 [ 26.951289][ T375] find_css_set+0x937/0x15c0 [ 26.955878][ T375] cgroup_migrate_prepare_dst+0xc4/0xa00 [ 26.961520][ T375] cgroup_attach_task+0x298/0x520 [ 26.966543][ T375] __cgroup1_procs_write+0x314/0x520 [ 26.971845][ T375] cgroup1_procs_write+0x2a/0x40 [ 26.976788][ T375] cgroup_file_write+0x2a2/0x590 [ 26.981731][ T375] page last free stack trace: [ 26.986394][ T375] free_unref_page_prepare+0x80c/0x820 [ 26.991854][ T375] free_unref_page+0x93/0x530 [ 26.996555][ T375] __free_pages+0x67/0x100 [ 27.000973][ T375] __vunmap+0xa3c/0xc00 [ 27.005129][ T375] vfree+0x61/0x90 [ 27.008871][ T375] kcov_close+0x2b/0x50 [ 27.013024][ T375] __fput+0x1fd/0x8f0 [ 27.017012][ T375] ____fput+0x15/0x20 [ 27.021097][ T375] task_work_run+0x1e1/0x250 [ 27.025712][ T375] do_exit+0xaf2/0x2850 [ 27.029881][ T375] do_group_exit+0x21b/0x2e0 [ 27.034515][ T375] get_signal+0x167c/0x1700 [ 27.039043][ T375] arch_do_signal_or_restart+0xd1/0x11c0 [ 27.044778][ T375] exit_to_user_mode_loop+0x7a/0xb0 [ 27.049982][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 27.055445][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 27.060990][ T375] [ 27.063310][ T375] Memory state around the buggy address: [ 27.069044][ T375] ffff88810f168800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.077100][ T375] ffff88810f168880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.085165][ T375] >ffff88810f168900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.093304][ T375] ^ [ 27.099986][ T375] ffff88810f168980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.108058][ T375] ffff88810f168a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.116117][ T375] ================================================================== [ 27.131712][ T375] Disabling lock debugging due to kernel taint