rocess permissive=1 [ 15.723902][ T24] audit: type=1400 audit(1784963166.580:63): avc: denied { siginh } for pid=217 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.54' (ED25519) to the list of known hosts. 2026/07/25 07:06:15 parsed 1 programs 2026/07/25 07:06:15 serving rpc on tcp://44393 [ 25.021309][ T24] audit: type=1400 audit(1784963175.930:64): 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 [ 25.042924][ T24] audit: type=1400 audit(1784963175.930:65): 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 [ 25.062795][ T24] audit: type=1400 audit(1784963175.930:66): 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 [ 25.963073][ T24] audit: type=1400 audit(1784963176.870:67): 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 [ 25.966341][ T293] cgroup: Unknown subsys name 'net' [ 25.985857][ T24] audit: type=1400 audit(1784963176.870:68): 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 [ 26.013092][ T24] audit: type=1400 audit(1784963176.900:69): 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 [ 26.013568][ T293] cgroup: Unknown subsys name 'devices' [ 26.159674][ T293] cgroup: Unknown subsys name 'hugetlb' [ 26.165290][ T293] cgroup: Unknown subsys name 'rlimit' [ 26.344196][ T24] audit: type=1400 audit(1784963177.250:70): 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 [ 26.367406][ T24] audit: type=1400 audit(1784963177.250:71): 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 [ 26.387991][ T24] audit: type=1400 audit(1784963177.250:72): 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 [ 26.405760][ T298] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 26.408479][ T24] audit: type=1400 audit(1784963177.250:73): 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 [ 26.443527][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 26.864759][ T300] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.871879][ T300] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.879675][ T300] device bridge_slave_0 entered promiscuous mode [ 26.886734][ T300] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.893882][ T300] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.901503][ T300] device bridge_slave_1 entered promiscuous mode [ 26.956629][ T300] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.963733][ T300] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.971054][ T300] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.978115][ T300] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.996764][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.004001][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.011372][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 27.018868][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.027626][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.035863][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.042913][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.051774][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.060022][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.067044][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.078962][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.088498][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.101941][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.113369][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.121734][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.129479][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.137682][ T300] device veth0_vlan entered promiscuous mode [ 27.147778][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.156830][ T300] device veth1_macvtap entered promiscuous mode [ 27.166049][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.176017][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.193726][ T300] request_module fs-gadgetfs succeeded, but still no fs? [ 27.203889][ T300] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 27.609239][ T9] device bridge_slave_1 left promiscuous mode [ 27.615436][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.624207][ T9] device bridge_slave_0 left promiscuous mode [ 27.631137][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.640295][ T9] device veth1_macvtap left promiscuous mode [ 27.646327][ T9] device veth0_vlan left promiscuous mode 2026/07/25 07:06:18 executed programs: 0 [ 28.067587][ T363] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.074800][ T363] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.082319][ T363] device bridge_slave_0 entered promiscuous mode [ 28.089090][ T363] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.096204][ T363] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.103707][ T363] device bridge_slave_1 entered promiscuous mode [ 28.142458][ T363] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.149690][ T363] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.156930][ T363] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.163995][ T363] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.181194][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.188780][ T48] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.195954][ T48] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.205558][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.214263][ T48] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.221337][ T48] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.232304][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.240913][ T48] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.247974][ T48] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.257815][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 28.268450][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 28.281729][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 28.292844][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 28.301656][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 28.309142][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 28.317301][ T363] device veth0_vlan entered promiscuous mode [ 28.327018][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 28.336217][ T363] device veth1_macvtap entered promiscuous mode [ 28.345501][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.362202][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 28.386712][ T367] ================================================================== [ 28.394853][ T367] BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 [ 28.401542][ T367] Write of size 8 at addr ffff888110d2d550 by task syz.2.17/367 [ 28.409166][ T367] [ 28.411509][ T367] CPU: 1 PID: 367 Comm: syz.2.17 Not tainted syzkaller #0 [ 28.418626][ T367] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 28.428925][ T367] Call Trace: [ 28.432221][ T367] __dump_stack+0x21/0x24 [ 28.436549][ T367] dump_stack_lvl+0x1a7/0x208 [ 28.441248][ T367] ? show_regs_print_info+0x18/0x18 [ 28.446443][ T367] ? thaw_kernel_threads+0x220/0x220 [ 28.451724][ T367] ? debug_smp_processor_id+0x17/0x20 [ 28.457093][ T367] print_address_description+0x7f/0x2c0 [ 28.462640][ T367] ? mutex_lock+0x85/0xf0 [ 28.466986][ T367] kasan_report+0x100/0x140 [ 28.471492][ T367] ? mutex_lock+0x85/0xf0 [ 28.475816][ T367] kasan_check_range+0x249/0x2a0 [ 28.480779][ T367] __kasan_check_write+0x14/0x20 [ 28.485712][ T367] mutex_lock+0x85/0xf0 [ 28.489861][ T367] ? mutex_trylock+0xb0/0xb0 [ 28.494446][ T367] ? l2tp_session_put+0xb2/0x1a0 [ 28.499383][ T367] ? l2tp_session_delete+0x3a9/0x4a0 [ 28.504662][ T367] pppol2tp_release+0x178/0x2b0 [ 28.509508][ T367] sock_close+0xb8/0x200 [ 28.513758][ T367] ? sock_mmap+0xa0/0xa0 [ 28.518005][ T367] __fput+0x2dc/0x730 [ 28.521991][ T367] ____fput+0x15/0x20 [ 28.525990][ T367] task_work_run+0x127/0x190 [ 28.530594][ T367] exit_to_user_mode_loop+0xcb/0xe0 [ 28.535790][ T367] exit_to_user_mode_prepare+0x76/0xa0 [ 28.541262][ T367] syscall_exit_to_user_mode+0x1d/0x40 [ 28.546713][ T367] do_syscall_64+0x3d/0x40 [ 28.551132][ T367] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.557115][ T367] RIP: 0033:0x7fb5fa65be99 [ 28.561554][ T367] 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 [ 28.581180][ T367] RSP: 002b:00007ffe7ad951a8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 28.589591][ T367] RAX: 0000000000000000 RBX: 00007ffe7ad95290 RCX: 00007fb5fa65be99 [ 28.597558][ T367] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 28.605560][ T367] RBP: 0000000000006ec5 R08: 0000000000000001 R09: 0000000000000000 [ 28.613552][ T367] R10: 0000001b32a20000 R11: 0000000000000246 R12: 0000000000000000 [ 28.621550][ T367] R13: 00007fb5fa8e3fac R14: 00007fb5fa8e3fa8 R15: 00007fb5fa8e3fa0 [ 28.629564][ T367] [ 28.631892][ T367] Allocated by task 367: [ 28.636135][ T367] __kasan_kmalloc+0xd4/0x100 [ 28.640910][ T367] __kmalloc+0x19f/0x330 [ 28.645332][ T367] l2tp_session_create+0x39/0xb60 [ 28.650354][ T367] pppol2tp_connect+0xbf5/0x1640 [ 28.655287][ T367] __sys_connect+0x3ce/0x450 [ 28.659873][ T367] __x64_sys_connect+0x7a/0x90 [ 28.664629][ T367] do_syscall_64+0x31/0x40 [ 28.669037][ T367] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.674916][ T367] [ 28.677240][ T367] Freed by task 367: [ 28.681129][ T367] kasan_set_track+0x4a/0x70 [ 28.685714][ T367] kasan_set_free_info+0x23/0x40 [ 28.690727][ T367] ____kasan_slab_free+0x125/0x160 [ 28.695837][ T367] __kasan_slab_free+0x11/0x20 [ 28.700590][ T367] slab_free_freelist_hook+0xc5/0x190 [ 28.705955][ T367] kfree+0xc0/0x270 [ 28.709758][ T367] l2tp_session_put+0xb2/0x1a0 [ 28.714527][ T367] l2tp_session_delete+0x3a9/0x4a0 [ 28.719627][ T367] pppol2tp_release+0x169/0x2b0 [ 28.724469][ T367] sock_close+0xb8/0x200 [ 28.728700][ T367] __fput+0x2dc/0x730 [ 28.732672][ T367] ____fput+0x15/0x20 [ 28.736646][ T367] task_work_run+0x127/0x190 [ 28.741227][ T367] exit_to_user_mode_loop+0xcb/0xe0 [ 28.746412][ T367] exit_to_user_mode_prepare+0x76/0xa0 [ 28.751866][ T367] syscall_exit_to_user_mode+0x1d/0x40 [ 28.757313][ T367] do_syscall_64+0x3d/0x40 [ 28.761724][ T367] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 28.767604][ T367] [ 28.769925][ T367] The buggy address belongs to the object at ffff888110d2d400 [ 28.769925][ T367] which belongs to the cache kmalloc-512 of size 512 [ 28.783967][ T367] The buggy address is located 336 bytes inside of [ 28.783967][ T367] 512-byte region [ffff888110d2d400, ffff888110d2d600) [ 28.797231][ T367] The buggy address belongs to the page: [ 28.802888][ T367] page:ffffea0004434b00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x110d2c [ 28.813112][ T367] head:ffffea0004434b00 order:2 compound_mapcount:0 compound_pincount:0 [ 28.821536][ T367] flags: 0x4000000000010200(slab|head) [ 28.826996][ T367] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 28.835597][ T367] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 28.844347][ T367] page dumped because: kasan: bad access detected [ 28.850759][ T367] page_owner tracks the page as allocated [ 28.856498][ T367] page last allocated via order 2, migratetype Unmovable, gfp_mask 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 363, ts 28374102842, free_ts 28355158369 [ 28.874803][ T367] prep_new_page+0x176/0x190 [ 28.879388][ T367] get_page_from_freelist+0x225f/0x23f0 [ 28.884924][ T367] __alloc_pages_nodemask+0x29a/0x640 [ 28.890281][ T367] new_slab+0x84/0x3f0 [ 28.894337][ T367] ___slab_alloc+0x2f8/0x4c0 [ 28.898945][ T367] __slab_alloc+0x63/0xa0 [ 28.903264][ T367] __kmalloc+0x1f9/0x330 [ 28.907497][ T367] fib6_info_alloc+0x34/0xe0 [ 28.912077][ T367] ip6_route_info_create+0x4c7/0x1450 [ 28.917446][ T367] ip6_route_add+0x27/0x130 [ 28.921939][ T367] addrconf_permanent_addr+0x635/0x940 [ 28.927387][ T367] addrconf_notify+0x752/0xea0 [ 28.932142][ T367] raw_notifier_call_chain+0x90/0x100 [ 28.937504][ T367] __dev_notify_flags+0x2f4/0x5b0 [ 28.942518][ T367] dev_change_flags+0xe3/0x1a0 [ 28.947272][ T367] do_setlink+0xb19/0x29a0 [ 28.951676][ T367] page last free stack trace: [ 28.956358][ T367] __free_pages_ok+0x80b/0x830 [ 28.961112][ T367] __free_pages+0xd8/0x390 [ 28.965537][ T367] __free_slab+0xcf/0x190 [ 28.969874][ T367] unfreeze_partials+0x150/0x180 [ 28.974804][ T367] put_cpu_partial+0xc1/0x180 [ 28.979470][ T367] __slab_free+0x2c9/0x3a0 [ 28.983877][ T367] ___cache_free+0x10e/0x130 [ 28.988462][ T367] qlink_free+0x50/0x90 [ 28.992623][ T367] qlist_free_all+0x5f/0xb0 [ 28.997116][ T367] kasan_quarantine_reduce+0x14a/0x160 [ 29.002567][ T367] __kasan_slab_alloc+0x2f/0xe0 [ 29.007409][ T367] slab_post_alloc_hook+0x5d/0x2f0 [ 29.012511][ T367] kmem_cache_alloc+0x15a/0x2d0 [ 29.017371][ T367] __alloc_skb+0x9e/0x520 [ 29.021690][ T367] rtmsg_ifinfo_build_skb+0x75/0x180 [ 29.026970][ T367] unregister_netdevice_many+0x10b9/0x19f0 [ 29.032775][ T367] [ 29.035091][ T367] Memory state around the buggy address: [ 29.040711][ T367] ffff888110d2d400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.048783][ T367] ffff888110d2d480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.056886][ T367] >ffff888110d2d500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.064957][ T367] ^ [ 29.071638][ T367] ffff888110d2d580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.079697][ T367] ffff888110d2d600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.087761][ T367] ================================================================== [ 29.095826][ T367] Disabling lock debugging due to kernel taint