Warning: Permanently added '10.128.0.79' (ED25519) to the list of known hosts. 2026/07/18 07:55:41 parsed 1 programs 2026/07/18 07:55:41 serving rpc on tcp://44569 [ 26.871003][ T30] audit: type=1400 audit(1784361341.877:64): avc: denied { node_bind } for pid=293 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 26.892771][ T30] audit: type=1400 audit(1784361341.877:65): avc: denied { module_request } for pid=293 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 [ 27.574802][ T30] audit: type=1400 audit(1784361342.577:66): avc: denied { mounton } for pid=299 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 [ 27.575777][ T299] cgroup: Unknown subsys name 'net' [ 27.597598][ T30] audit: type=1400 audit(1784361342.577:67): avc: denied { mount } for pid=299 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 [ 27.625138][ T30] audit: type=1400 audit(1784361342.607:68): avc: denied { unmount } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 27.625325][ T299] cgroup: Unknown subsys name 'devices' [ 27.771895][ T299] cgroup: Unknown subsys name 'hugetlb' [ 27.777501][ T299] cgroup: Unknown subsys name 'rlimit' [ 27.919148][ T30] audit: type=1400 audit(1784361342.917:69): avc: denied { setattr } for pid=299 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=254 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 27.942362][ T30] audit: type=1400 audit(1784361342.917:70): avc: denied { create } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 27.962796][ T30] audit: type=1400 audit(1784361342.917:71): avc: denied { write } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 27.968627][ T304] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 27.983287][ T30] audit: type=1400 audit(1784361342.917:72): avc: denied { read } for pid=299 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 [ 28.012239][ T30] audit: type=1400 audit(1784361342.917:73): avc: denied { mounton } for pid=299 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 [ 28.044526][ T299] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 28.484388][ T306] request_module fs-gadgetfs succeeded, but still no fs? [ 28.757703][ T319] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.764901][ T319] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.772297][ T319] device bridge_slave_0 entered promiscuous mode [ 28.779019][ T319] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.786070][ T319] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.793544][ T319] device bridge_slave_1 entered promiscuous mode [ 28.829113][ T319] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.836268][ T319] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.843592][ T319] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.850681][ T319] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.868020][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.875548][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.883278][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 28.890799][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.900583][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.908737][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.915801][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.924426][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.932846][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.939878][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.952106][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 28.961138][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 28.974787][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 28.986495][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 28.994686][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 29.002291][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 29.010261][ T319] device veth0_vlan entered promiscuous mode [ 29.020366][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 29.029243][ T319] device veth1_macvtap entered promiscuous mode [ 29.038166][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 29.048435][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/07/18 07:55:44 executed programs: 0 [ 29.626951][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.634252][ T368] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.641805][ T368] device bridge_slave_0 entered promiscuous mode [ 29.651180][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.658236][ T368] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.665713][ T368] device bridge_slave_1 entered promiscuous mode [ 29.701779][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.708823][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.716102][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.723146][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.731700][ T8] device bridge_slave_1 left promiscuous mode [ 29.737848][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.745426][ T8] device bridge_slave_0 left promiscuous mode [ 29.751897][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.759773][ T8] device veth1_macvtap left promiscuous mode [ 29.765927][ T8] device veth0_vlan left promiscuous mode [ 29.840335][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.847804][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.858247][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 29.865899][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 29.875964][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 29.884360][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 29.892850][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.900029][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.907590][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 29.916185][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.924436][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.931477][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.941886][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 29.949933][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 29.959092][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 29.967856][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 29.979968][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 29.988598][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 29.999597][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 30.007521][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 30.016260][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 30.023902][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 30.031756][ T368] device veth0_vlan entered promiscuous mode [ 30.040959][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 30.049092][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 30.062294][ T368] device veth1_macvtap entered promiscuous mode [ 30.072389][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 30.080798][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 30.089225][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 30.102314][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 30.110786][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 30.134271][ T373] ================================================================== [ 30.142383][ T373] BUG: KASAN: use-after-free in mutex_lock+0x8e/0x1c0 [ 30.149254][ T373] Write of size 8 at addr ffff88811fe4e950 by task syz.2.17/373 [ 30.156874][ T373] [ 30.159214][ T373] CPU: 1 PID: 373 Comm: syz.2.17 Not tainted syzkaller #0 [ 30.166322][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026 [ 30.176647][ T373] Call Trace: [ 30.179932][ T373] [ 30.182853][ T373] __dump_stack+0x21/0x30 [ 30.187528][ T373] dump_stack_lvl+0x110/0x170 [ 30.192195][ T373] ? show_regs_print_info+0x20/0x20 [ 30.197483][ T373] ? load_image+0x3f0/0x3f0 [ 30.201994][ T373] print_address_description+0x7f/0x2c0 [ 30.207570][ T373] ? mutex_lock+0x8e/0x1c0 [ 30.212141][ T373] kasan_report+0x10f/0x150 [ 30.216660][ T373] ? mutex_lock+0x8e/0x1c0 [ 30.221074][ T373] kasan_check_range+0x249/0x2a0 [ 30.226038][ T373] __kasan_check_write+0x14/0x20 [ 30.230965][ T373] mutex_lock+0x8e/0x1c0 [ 30.235335][ T373] ? wait_for_completion_killable_timeout+0x10/0x10 [ 30.241937][ T373] ? l2tp_session_put+0xaf/0x1a0 [ 30.246870][ T373] ? l2tp_session_delete+0x3a9/0x4a0 [ 30.252305][ T373] pppol2tp_release+0x178/0x2b0 [ 30.257387][ T373] sock_close+0xb8/0x200 [ 30.261652][ T373] ? sock_mmap+0xa0/0xa0 [ 30.266405][ T373] __fput+0x22b/0x900 [ 30.270380][ T373] ____fput+0x15/0x20 [ 30.274421][ T373] task_work_run+0x127/0x190 [ 30.279017][ T373] exit_to_user_mode_loop+0xd0/0xe0 [ 30.284241][ T373] exit_to_user_mode_prepare+0x87/0xd0 [ 30.289729][ T373] syscall_exit_to_user_mode+0x1a/0x30 [ 30.295181][ T373] do_syscall_64+0x58/0xa0 [ 30.299581][ T373] ? clear_bhb_loop+0x50/0xa0 [ 30.304437][ T373] ? clear_bhb_loop+0x50/0xa0 [ 30.309108][ T373] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 30.315003][ T373] RIP: 0033:0x7f9805df8e99 [ 30.319405][ T373] 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 [ 30.338993][ T373] RSP: 002b:00007ffc54963718 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 30.347393][ T373] RAX: 0000000000000000 RBX: 00007ffc54963800 RCX: 00007f9805df8e99 [ 30.355355][ T373] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 30.363314][ T373] RBP: 0000000000007596 R08: 0000000000000001 R09: 0000000000000000 [ 30.371275][ T373] R10: 0000001b32f20000 R11: 0000000000000246 R12: 0000000000000000 [ 30.379233][ T373] R13: 00007f9806080fac R14: 00007f9806080fa8 R15: 00007f9806080fa0 [ 30.387215][ T373] [ 30.390268][ T373] [ 30.392578][ T373] Allocated by task 373: [ 30.396798][ T373] __kasan_kmalloc+0xd4/0x100 [ 30.401460][ T373] __kmalloc+0x13d/0x2c0 [ 30.407327][ T373] l2tp_session_create+0x39/0xb60 [ 30.412525][ T373] pppol2tp_connect+0xbf5/0x1640 [ 30.417456][ T373] __sys_connect+0x3cb/0x450 [ 30.422056][ T373] __x64_sys_connect+0x7a/0x90 [ 30.426809][ T373] x64_sys_call+0x7c/0x9a0 [ 30.431239][ T373] do_syscall_64+0x4c/0xa0 [ 30.435640][ T373] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 30.441521][ T373] [ 30.443845][ T373] Freed by task 373: [ 30.447736][ T373] kasan_set_track+0x4a/0x70 [ 30.452313][ T373] kasan_set_free_info+0x23/0x40 [ 30.457239][ T373] ____kasan_slab_free+0x125/0x160 [ 30.462340][ T373] __kasan_slab_free+0x11/0x20 [ 30.467096][ T373] slab_free_freelist_hook+0xc2/0x190 [ 30.472545][ T373] kfree+0xc4/0x270 [ 30.476337][ T373] l2tp_session_put+0xaf/0x1a0 [ 30.481093][ T373] l2tp_session_delete+0x3a9/0x4a0 [ 30.486192][ T373] pppol2tp_release+0x169/0x2b0 [ 30.491028][ T373] sock_close+0xb8/0x200 [ 30.495253][ T373] __fput+0x22b/0x900 [ 30.499217][ T373] ____fput+0x15/0x20 [ 30.503189][ T373] task_work_run+0x127/0x190 [ 30.507780][ T373] exit_to_user_mode_loop+0xd0/0xe0 [ 30.512986][ T373] exit_to_user_mode_prepare+0x87/0xd0 [ 30.518812][ T373] syscall_exit_to_user_mode+0x1a/0x30 [ 30.524816][ T373] do_syscall_64+0x58/0xa0 [ 30.529229][ T373] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 30.535112][ T373] [ 30.537422][ T373] The buggy address belongs to the object at ffff88811fe4e800 [ 30.537422][ T373] which belongs to the cache kmalloc-512 of size 512 [ 30.551462][ T373] The buggy address is located 336 bytes inside of [ 30.551462][ T373] 512-byte region [ffff88811fe4e800, ffff88811fe4ea00) [ 30.564721][ T373] The buggy address belongs to the page: [ 30.570343][ T373] page:ffffea00047f9300 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11fe4c [ 30.580588][ T373] head:ffffea00047f9300 order:2 compound_mapcount:0 compound_pincount:0 [ 30.589032][ T373] flags: 0x4000000000010200(slab|head|zone=1) [ 30.595105][ T373] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 30.603765][ T373] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 30.612328][ T373] page dumped because: kasan: bad access detected [ 30.618730][ T373] page_owner tracks the page as allocated [ 30.624429][ T373] page last allocated via order 2, migratetype Unmovable, gfp_mask 0x1d2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 6, ts 30119463014, free_ts 18843832095 [ 30.644036][ T373] post_alloc_hook+0x192/0x1b0 [ 30.648817][ T373] prep_new_page+0x1c/0x110 [ 30.653847][ T373] get_page_from_freelist+0x2c3a/0x2cd0 [ 30.659402][ T373] __alloc_pages+0x1a2/0x460 [ 30.663981][ T373] new_slab+0xa0/0x4d0 [ 30.668055][ T373] ___slab_alloc+0x3ac/0x840 [ 30.672647][ T373] __slab_alloc+0x49/0x90 [ 30.676977][ T373] __kmalloc_track_caller+0x169/0x2c0 [ 30.682346][ T373] __alloc_skb+0x210/0x730 [ 30.686754][ T373] __ipv6_ifa_notify+0x200/0xe70 [ 30.691705][ T373] addrconf_dad_completed+0x182/0xe20 [ 30.697191][ T373] addrconf_dad_work+0xc4c/0x1510 [ 30.702220][ T373] process_one_work+0x6c8/0xbb0 [ 30.708188][ T373] worker_thread+0xaa0/0x1250 [ 30.712891][ T373] kthread+0x3f5/0x4f0 [ 30.716963][ T373] ret_from_fork+0x1f/0x30 [ 30.721417][ T373] page last free stack trace: [ 30.726099][ T373] free_unref_page_prepare+0x5fa/0x600 [ 30.731821][ T373] free_unref_page+0xae/0x540 [ 30.736519][ T373] free_compound_page+0x78/0xa0 [ 30.741645][ T373] __put_compound_page+0x77/0xb0 [ 30.746585][ T373] __put_page+0xbc/0xe0 [ 30.750741][ T373] skb_release_data+0x37c/0xa20 [ 30.755596][ T373] __kfree_skb+0x50/0x70 [ 30.759835][ T373] tcp_recvmsg_locked+0x13d1/0x24f0 [ 30.765021][ T373] tcp_recvmsg+0x233/0x770 [ 30.769514][ T373] inet_recvmsg+0x13a/0x470 [ 30.774030][ T373] sock_read_iter+0x2c2/0x380 [ 30.778704][ T373] vfs_read+0x6c0/0xc20 [ 30.782857][ T373] ksys_read+0x14a/0x260 [ 30.787084][ T373] __x64_sys_read+0x7b/0x90 [ 30.791572][ T373] x64_sys_call+0x96d/0x9a0 [ 30.796058][ T373] do_syscall_64+0x4c/0xa0 [ 30.800467][ T373] [ 30.802793][ T373] Memory state around the buggy address: [ 30.808890][ T373] ffff88811fe4e800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.816964][ T373] ffff88811fe4e880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.825028][ T373] >ffff88811fe4e900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.833131][ T373] ^ [ 30.839938][ T373] ffff88811fe4e980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.848000][ T373] ffff88811fe4ea00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.856052][ T373] ================================================================== [ 30.864120][ T373] Disabling lock debugging due to kernel taint