Warning: Permanently added '10.128.0.90' (ED25519) to the list of known hosts. 2026/06/24 14:33:47 parsed 1 programs 2026/06/24 14:33:47 serving rpc on tcp://37147 [ 25.783190][ T24] audit: type=1400 audit(1782311627.680:64): 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 [ 25.804483][ T24] audit: type=1400 audit(1782311627.680:65): 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 [ 25.824017][ T24] audit: type=1400 audit(1782311627.680:66): 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 [ 26.731685][ T24] audit: type=1400 audit(1782311628.620:67): 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 [ 26.735078][ T293] cgroup: Unknown subsys name 'net' [ 26.760784][ T293] cgroup: Unknown subsys name 'devices' [ 26.767520][ T24] audit: type=1400 audit(1782311628.630:68): 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 [ 26.795522][ T24] audit: type=1400 audit(1782311628.650:69): 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 [ 26.883930][ T293] cgroup: Unknown subsys name 'hugetlb' [ 26.889547][ T293] cgroup: Unknown subsys name 'rlimit' [ 27.037332][ T24] audit: type=1400 audit(1782311628.930:70): 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 [ 27.060481][ T24] audit: type=1400 audit(1782311628.930:71): 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 [ 27.080909][ T24] audit: type=1400 audit(1782311628.930:72): 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 [ 27.098609][ T298] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 27.101275][ T24] audit: type=1400 audit(1782311628.930:73): 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 [ 27.160025][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 27.570483][ T300] request_module fs-gadgetfs succeeded, but still no fs? [ 27.581449][ T300] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 27.956475][ T326] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.963600][ T326] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.971123][ T326] device bridge_slave_0 entered promiscuous mode [ 27.978135][ T326] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.985337][ T326] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.992796][ T326] device bridge_slave_1 entered promiscuous mode [ 28.034338][ T326] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.041377][ T326] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.048692][ T326] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.055759][ T326] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.073483][ T49] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.080742][ T49] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.088203][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 28.095702][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.106007][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.114503][ T49] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.121608][ T49] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.130491][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.138847][ T49] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.145910][ T49] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.161196][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 28.169239][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 28.183711][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 28.195521][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 28.203695][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 28.211068][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 28.219453][ T326] device veth0_vlan entered promiscuous mode [ 28.229243][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 28.238302][ T326] device veth1_macvtap entered promiscuous mode [ 28.248697][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.258934][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/06/24 14:33:50 executed programs: 0 [ 28.827368][ T364] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.834578][ T364] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.842046][ T364] device bridge_slave_0 entered promiscuous mode [ 28.849520][ T364] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.856667][ T364] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.864209][ T364] device bridge_slave_1 entered promiscuous mode [ 28.911744][ T364] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.918812][ T364] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.926141][ T364] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.933210][ T364] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.950782][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.958767][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.966388][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.978479][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 28.987071][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.995532][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.002606][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.009998][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 29.018493][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.026828][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.033907][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.044805][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 29.052892][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 29.061737][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 29.069988][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 29.083487][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 29.091831][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 29.103025][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 29.110902][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 29.119111][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 29.126721][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 29.135290][ T364] device veth0_vlan entered promiscuous mode [ 29.144788][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 29.153008][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 29.161959][ T364] device veth1_macvtap entered promiscuous mode [ 29.170861][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 29.178988][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 29.187460][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 29.196715][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 29.205288][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 29.227934][ T381] ================================================================== [ 29.236063][ T381] BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 [ 29.242745][ T381] Write of size 8 at addr ffff8881114e9950 by task syz.2.17/381 [ 29.250357][ T381] [ 29.252686][ T381] CPU: 0 PID: 381 Comm: syz.2.17 Not tainted syzkaller #0 [ 29.259780][ T381] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 29.269824][ T381] Call Trace: [ 29.273113][ T381] __dump_stack+0x21/0x24 [ 29.277444][ T381] dump_stack_lvl+0x1a7/0x208 [ 29.282124][ T381] ? show_regs_print_info+0x18/0x18 [ 29.287345][ T381] ? thaw_kernel_threads+0x220/0x220 [ 29.292650][ T381] ? debug_smp_processor_id+0x17/0x20 [ 29.298057][ T381] print_address_description+0x7f/0x2c0 [ 29.303617][ T381] ? mutex_lock+0x85/0xf0 [ 29.308053][ T381] kasan_report+0x100/0x140 [ 29.312583][ T381] ? mutex_lock+0x85/0xf0 [ 29.316934][ T381] kasan_check_range+0x249/0x2a0 [ 29.321880][ T381] __kasan_check_write+0x14/0x20 [ 29.326820][ T381] mutex_lock+0x85/0xf0 [ 29.330991][ T381] ? mutex_trylock+0xb0/0xb0 [ 29.335611][ T381] ? l2tp_session_put+0xb2/0x1a0 [ 29.340569][ T381] ? l2tp_session_delete+0x3a9/0x4a0 [ 29.345897][ T381] pppol2tp_release+0x178/0x2b0 [ 29.350788][ T381] sock_close+0xb8/0x200 [ 29.355050][ T381] ? sock_mmap+0xa0/0xa0 [ 29.359300][ T381] __fput+0x2dc/0x730 [ 29.363414][ T381] ____fput+0x15/0x20 [ 29.367408][ T381] task_work_run+0x127/0x190 [ 29.372027][ T381] exit_to_user_mode_loop+0xcb/0xe0 [ 29.377260][ T381] exit_to_user_mode_prepare+0x76/0xa0 [ 29.382731][ T381] syscall_exit_to_user_mode+0x1d/0x40 [ 29.388214][ T381] do_syscall_64+0x3d/0x40 [ 29.392641][ T381] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 29.398576][ T381] RIP: 0033:0x7f5626023e59 [ 29.403001][ T381] 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 [ 29.422794][ T381] RSP: 002b:00007ffde31f75c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 29.431343][ T381] RAX: 0000000000000000 RBX: 00007ffde31f76b0 RCX: 00007f5626023e59 [ 29.439428][ T381] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 29.447417][ T381] RBP: 000000000000720a R08: 0000000000000001 R09: 0000000000000000 [ 29.455401][ T381] R10: 0000001b32b20000 R11: 0000000000000246 R12: 0000000000000000 [ 29.463386][ T381] R13: 00007f562629cfac R14: 00007f562629cfa8 R15: 00007f562629cfa0 [ 29.471365][ T381] [ 29.473702][ T381] Allocated by task 381: [ 29.477958][ T381] __kasan_kmalloc+0xd4/0x100 [ 29.482645][ T381] __kmalloc+0x19f/0x330 [ 29.486984][ T381] l2tp_session_create+0x39/0xb60 [ 29.492013][ T381] pppol2tp_connect+0xbf5/0x1640 [ 29.496964][ T381] __sys_connect+0x3ce/0x450 [ 29.501560][ T381] __x64_sys_connect+0x7a/0x90 [ 29.506335][ T381] do_syscall_64+0x31/0x40 [ 29.510755][ T381] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 29.516649][ T381] [ 29.518986][ T381] Freed by task 381: [ 29.522885][ T381] kasan_set_track+0x4a/0x70 [ 29.527481][ T381] kasan_set_free_info+0x23/0x40 [ 29.532425][ T381] ____kasan_slab_free+0x125/0x160 [ 29.537539][ T381] __kasan_slab_free+0x11/0x20 [ 29.542304][ T381] slab_free_freelist_hook+0xc5/0x190 [ 29.547686][ T381] kfree+0xc0/0x270 [ 29.551499][ T381] l2tp_session_put+0xb2/0x1a0 [ 29.556296][ T381] l2tp_session_delete+0x3a9/0x4a0 [ 29.561418][ T381] pppol2tp_release+0x169/0x2b0 [ 29.566395][ T381] sock_close+0xb8/0x200 [ 29.570645][ T381] __fput+0x2dc/0x730 [ 29.574637][ T381] ____fput+0x15/0x20 [ 29.578626][ T381] task_work_run+0x127/0x190 [ 29.583223][ T381] exit_to_user_mode_loop+0xcb/0xe0 [ 29.588428][ T381] exit_to_user_mode_prepare+0x76/0xa0 [ 29.593889][ T381] syscall_exit_to_user_mode+0x1d/0x40 [ 29.599355][ T381] do_syscall_64+0x3d/0x40 [ 29.603773][ T381] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 29.609669][ T381] [ 29.612009][ T381] The buggy address belongs to the object at ffff8881114e9800 [ 29.612009][ T381] which belongs to the cache kmalloc-512 of size 512 [ 29.626156][ T381] The buggy address is located 336 bytes inside of [ 29.626156][ T381] 512-byte region [ffff8881114e9800, ffff8881114e9a00) [ 29.639431][ T381] The buggy address belongs to the page: [ 29.645086][ T381] page:ffffea0004453a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1114e8 [ 29.655330][ T381] head:ffffea0004453a00 order:2 compound_mapcount:0 compound_pincount:0 [ 29.663665][ T381] flags: 0x4000000000010200(slab|head) [ 29.669136][ T381] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 29.677726][ T381] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 29.686318][ T381] page dumped because: kasan: bad access detected [ 29.692732][ T381] page_owner tracks the page as allocated [ 29.698465][ T381] 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 364, ts 29218510557, free_ts 29215616181 [ 29.718863][ T381] prep_new_page+0x176/0x190 [ 29.723459][ T381] get_page_from_freelist+0x225f/0x23f0 [ 29.729005][ T381] __alloc_pages_nodemask+0x29a/0x640 [ 29.734380][ T381] new_slab+0x84/0x3f0 [ 29.738450][ T381] ___slab_alloc+0x2f8/0x4c0 [ 29.743050][ T381] __slab_alloc+0x63/0xa0 [ 29.747383][ T381] __kmalloc+0x1f9/0x330 [ 29.751633][ T381] qdisc_alloc+0x79/0x720 [ 29.755963][ T381] qdisc_create_dflt+0x6b/0x390 [ 29.760817][ T381] dev_activate+0x292/0x11c0 [ 29.765406][ T381] __dev_open+0x3e9/0x500 [ 29.769737][ T381] __dev_change_flags+0x1e4/0x6a0 [ 29.774763][ T381] dev_change_flags+0x80/0x1a0 [ 29.779555][ T381] do_setlink+0xb19/0x29a0 [ 29.784006][ T381] rtnl_newlink+0x13e6/0x1830 [ 29.788692][ T381] rtnetlink_rcv_msg+0x9e9/0xca0 [ 29.793627][ T381] page last free stack trace: [ 29.798313][ T381] __free_pages_ok+0x80b/0x830 [ 29.803086][ T381] __free_pages+0xd8/0x390 [ 29.807507][ T381] __free_slab+0xcf/0x190 [ 29.811842][ T381] unfreeze_partials+0x150/0x180 [ 29.816783][ T381] put_cpu_partial+0xc1/0x180 [ 29.821462][ T381] __slab_free+0x2c9/0x3a0 [ 29.825899][ T381] ___cache_free+0x10e/0x130 [ 29.830492][ T381] qlink_free+0x50/0x90 [ 29.834652][ T381] qlist_free_all+0x5f/0xb0 [ 29.839166][ T381] kasan_quarantine_reduce+0x14a/0x160 [ 29.844628][ T381] __kasan_slab_alloc+0x2f/0xe0 [ 29.849480][ T381] slab_post_alloc_hook+0x5d/0x2f0 [ 29.854595][ T381] kmem_cache_alloc+0x15a/0x2d0 [ 29.859452][ T381] __alloc_skb+0x9e/0x520 [ 29.863781][ T381] netlink_ack+0x35c/0xb30 [ 29.868196][ T381] netlink_rcv_skb+0x267/0x430 [ 29.872959][ T381] [ 29.875296][ T381] Memory state around the buggy address: [ 29.880931][ T381] ffff8881114e9800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.888995][ T381] ffff8881114e9880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.897073][ T381] >ffff8881114e9900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.905135][ T381] ^ [ 29.911824][ T381] ffff8881114e9980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.919888][ T381] ffff8881114e9a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.927950][ T381] ================================================================== [ 29.936014][ T381] Disabling lock debugging due to kernel taint