Warning: Permanently added '10.128.0.158' (ED25519) to the list of known hosts. [ 21.905456][ T291] sshd-session (291) used greatest stack depth: 22784 bytes left 2026/08/03 02:07:59 parsed 1 programs 2026/08/03 02:07:59 serving rpc on tcp://38951 [ 22.878736][ T30] audit: type=1400 audit(1785722879.535:64): 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 [ 22.909972][ T30] audit: type=1400 audit(1785722879.535:65): 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 [ 23.521934][ T30] audit: type=1400 audit(1785722880.185:66): 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 [ 23.522976][ T299] cgroup: Unknown subsys name 'net' [ 23.544905][ T30] audit: type=1400 audit(1785722880.185:67): 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 [ 23.571843][ T30] audit: type=1400 audit(1785722880.215:68): 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 [ 23.571974][ T299] cgroup: Unknown subsys name 'devices' [ 23.742064][ T299] cgroup: Unknown subsys name 'hugetlb' [ 23.747650][ T299] cgroup: Unknown subsys name 'rlimit' [ 23.858973][ T30] audit: type=1400 audit(1785722880.515:69): 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 [ 23.882152][ T30] audit: type=1400 audit(1785722880.515:70): 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 [ 23.895541][ T304] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 23.902918][ T30] audit: type=1400 audit(1785722880.515:71): 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 [ 23.931477][ T30] audit: type=1400 audit(1785722880.515:72): 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 [ 23.951660][ T30] audit: type=1400 audit(1785722880.525:73): 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 [ 23.966117][ T299] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 24.385752][ T306] request_module fs-gadgetfs succeeded, but still no fs? [ 24.662659][ T324] syz-executor (324) used greatest stack depth: 22080 bytes left [ 24.873337][ T351] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.880522][ T351] bridge0: port 1(bridge_slave_0) entered disabled state [ 24.887936][ T351] device bridge_slave_0 entered promiscuous mode [ 24.894870][ T351] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.901974][ T351] bridge0: port 2(bridge_slave_1) entered disabled state [ 24.909218][ T351] device bridge_slave_1 entered promiscuous mode [ 24.948317][ T351] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.955367][ T351] bridge0: port 2(bridge_slave_1) entered forwarding state [ 24.962644][ T351] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.969653][ T351] bridge0: port 1(bridge_slave_0) entered forwarding state [ 24.985892][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 24.993381][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.000688][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.009576][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.017932][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.024971][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.035545][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.043893][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.050930][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.061729][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.070434][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.082624][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.093219][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.101273][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.108579][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.116517][ T351] device veth0_vlan entered promiscuous mode [ 25.125586][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.134342][ T351] device veth1_macvtap entered promiscuous mode [ 25.142933][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.152532][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 25.185452][ T351] syz-executor (351) used greatest stack depth: 22056 bytes left 2026/08/03 02:08:02 executed programs: 0 [ 25.406678][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.413837][ T368] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.421194][ T368] device bridge_slave_0 entered promiscuous mode [ 25.433243][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.440264][ T368] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.447729][ T368] device bridge_slave_1 entered promiscuous mode [ 25.488981][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.496046][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.503321][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.510356][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.526483][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.534042][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.541814][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.556345][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.564553][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.571581][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.580119][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.588292][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.595306][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.610693][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.619465][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.631656][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 25.639912][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.655562][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 25.663409][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.671439][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.678830][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.687176][ T368] device veth0_vlan entered promiscuous mode [ 25.702223][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 25.710579][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.719325][ T368] device veth1_macvtap entered promiscuous mode [ 25.727535][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 25.735384][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 25.743780][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.758897][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 25.767157][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 25.890545][ T373] ================================================================== [ 25.898628][ T373] BUG: KASAN: use-after-free in mutex_lock+0x8e/0x1c0 [ 25.905401][ T373] Write of size 8 at addr ffff88812dc7d150 by task syz.2.17/373 [ 25.913019][ T373] [ 25.915332][ T373] CPU: 1 PID: 373 Comm: syz.2.17 Not tainted syzkaller #0 [ 25.922422][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 25.932466][ T373] Call Trace: [ 25.935725][ T373] [ 25.938643][ T373] __dump_stack+0x21/0x30 [ 25.942965][ T373] dump_stack_lvl+0x110/0x170 [ 25.947642][ T373] ? show_regs_print_info+0x20/0x20 [ 25.952835][ T373] ? load_image+0x3f0/0x3f0 [ 25.957415][ T373] print_address_description+0x7f/0x2c0 [ 25.962942][ T373] ? mutex_lock+0x8e/0x1c0 [ 25.967342][ T373] kasan_report+0x10f/0x150 [ 25.971828][ T373] ? mutex_lock+0x8e/0x1c0 [ 25.976224][ T373] kasan_check_range+0x249/0x2a0 [ 25.981143][ T373] __kasan_check_write+0x14/0x20 [ 25.986061][ T373] mutex_lock+0x8e/0x1c0 [ 25.990285][ T373] ? wait_for_completion_killable_timeout+0x10/0x10 [ 25.996855][ T373] ? l2tp_session_put+0xaf/0x1a0 [ 26.001776][ T373] ? l2tp_session_delete+0x3a9/0x4a0 [ 26.007043][ T373] pppol2tp_release+0x178/0x2b0 [ 26.011876][ T373] sock_close+0xb8/0x200 [ 26.016097][ T373] ? sock_mmap+0xa0/0xa0 [ 26.020317][ T373] __fput+0x22b/0x900 [ 26.024288][ T373] ____fput+0x15/0x20 [ 26.028250][ T373] task_work_run+0x127/0x190 [ 26.032820][ T373] do_exit+0xb70/0x29a0 [ 26.036960][ T373] ? put_task_struct+0x90/0x90 [ 26.041701][ T373] ? __remove_hrtimer+0x157/0x3d0 [ 26.046714][ T373] ? __kasan_check_write+0x14/0x20 [ 26.051826][ T373] ? _raw_spin_lock_irq+0x95/0xf0 [ 26.056839][ T373] do_group_exit+0x149/0x310 [ 26.061410][ T373] ? __kasan_check_write+0x14/0x20 [ 26.066512][ T373] ? recalc_sigpending+0x1c4/0x230 [ 26.071606][ T373] get_signal+0x64f/0x1430 [ 26.076004][ T373] ? usleep_range_state+0x130/0x130 [ 26.081190][ T373] arch_do_signal_or_restart+0xe2/0x1100 [ 26.086804][ T373] ? nanosleep_copyout+0x120/0x120 [ 26.091895][ T373] ? __remove_hrtimer+0x3d0/0x3d0 [ 26.096919][ T373] ? get_timespec64+0x116/0x1b0 [ 26.101759][ T373] ? get_sigframe_size+0x10/0x10 [ 26.106679][ T373] ? __x64_sys_clock_nanosleep+0xb0/0xb0 [ 26.112292][ T373] exit_to_user_mode_loop+0xa7/0xe0 [ 26.117471][ T373] exit_to_user_mode_prepare+0x87/0xd0 [ 26.122909][ T373] syscall_exit_to_user_mode+0x1a/0x30 [ 26.128348][ T373] do_syscall_64+0x58/0xa0 [ 26.132745][ T373] ? clear_bhb_loop+0x50/0xa0 [ 26.137407][ T373] ? clear_bhb_loop+0x50/0xa0 [ 26.142063][ T373] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 26.147936][ T373] RIP: 0033:0x7f62ce274197 [ 26.152328][ T373] Code: Unable to access opcode bytes at RIP 0x7f62ce27416d. [ 26.159670][ T373] RSP: 002b:00007ffc395db420 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6 [ 26.168075][ T373] RAX: fffffffffffffdfc RBX: 0000555558f59500 RCX: 00007f62ce274197 [ 26.176031][ T373] RDX: 00007ffc395db460 RSI: 0000000000000000 RDI: 0000000000000000 [ 26.183981][ T373] RBP: 00007f62ce35000c R08: 0000000000000000 R09: 0000000000000000 [ 26.191931][ T373] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000 [ 26.199881][ T373] R13: 00007f62ce540fac R14: 00007f62ce540fa0 R15: 00007f62ce540fa0 [ 26.207836][ T373] [ 26.210839][ T373] [ 26.213146][ T373] Allocated by task 372: [ 26.217360][ T373] __kasan_kmalloc+0xd4/0x100 [ 26.222022][ T373] __kmalloc+0x13d/0x2c0 [ 26.226243][ T373] l2tp_session_create+0x39/0xb60 [ 26.231249][ T373] pppol2tp_connect+0xbf5/0x1640 [ 26.236167][ T373] __sys_connect+0x3cb/0x450 [ 26.240733][ T373] __x64_sys_connect+0x7a/0x90 [ 26.245480][ T373] x64_sys_call+0x7c/0x9a0 [ 26.249876][ T373] do_syscall_64+0x4c/0xa0 [ 26.254268][ T373] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 26.260141][ T373] [ 26.262446][ T373] Freed by task 373: [ 26.266314][ T373] kasan_set_track+0x4a/0x70 [ 26.270883][ T373] kasan_set_free_info+0x23/0x40 [ 26.275797][ T373] ____kasan_slab_free+0x125/0x160 [ 26.280886][ T373] __kasan_slab_free+0x11/0x20 [ 26.285628][ T373] slab_free_freelist_hook+0xc2/0x190 [ 26.290977][ T373] kfree+0xc4/0x270 [ 26.294762][ T373] l2tp_session_put+0xaf/0x1a0 [ 26.299511][ T373] l2tp_session_delete+0x3a9/0x4a0 [ 26.304602][ T373] pppol2tp_release+0x169/0x2b0 [ 26.309432][ T373] sock_close+0xb8/0x200 [ 26.313652][ T373] __fput+0x22b/0x900 [ 26.317615][ T373] ____fput+0x15/0x20 [ 26.321578][ T373] task_work_run+0x127/0x190 [ 26.326149][ T373] do_exit+0xb70/0x29a0 [ 26.330282][ T373] do_group_exit+0x149/0x310 [ 26.334851][ T373] get_signal+0x64f/0x1430 [ 26.339247][ T373] arch_do_signal_or_restart+0xe2/0x1100 [ 26.344862][ T373] exit_to_user_mode_loop+0xa7/0xe0 [ 26.350039][ T373] exit_to_user_mode_prepare+0x87/0xd0 [ 26.355475][ T373] syscall_exit_to_user_mode+0x1a/0x30 [ 26.360915][ T373] do_syscall_64+0x58/0xa0 [ 26.365308][ T373] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 26.371179][ T373] [ 26.373480][ T373] The buggy address belongs to the object at ffff88812dc7d000 [ 26.373480][ T373] which belongs to the cache kmalloc-512 of size 512 [ 26.387510][ T373] The buggy address is located 336 bytes inside of [ 26.387510][ T373] 512-byte region [ffff88812dc7d000, ffff88812dc7d200) [ 26.400762][ T373] The buggy address belongs to the page: [ 26.406378][ T373] page:ffffea0004b71f00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12dc7c [ 26.416596][ T373] head:ffffea0004b71f00 order:2 compound_mapcount:0 compound_pincount:0 [ 26.424898][ T373] flags: 0x4000000000010200(slab|head|zone=1) [ 26.430952][ T373] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 26.439519][ T373] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 26.448076][ T373] page dumped because: kasan: bad access detected [ 26.454461][ T373] page_owner tracks the page as allocated [ 26.460156][ T373] 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 368, ts 25777851198, free_ts 24793895439 [ 26.480536][ T373] post_alloc_hook+0x192/0x1b0 [ 26.485288][ T373] prep_new_page+0x1c/0x110 [ 26.489770][ T373] get_page_from_freelist+0x2c3a/0x2cd0 [ 26.495293][ T373] __alloc_pages+0x1a2/0x460 [ 26.499861][ T373] new_slab+0xa0/0x4d0 [ 26.503909][ T373] ___slab_alloc+0x3ac/0x840 [ 26.508478][ T373] __slab_alloc+0x49/0x90 [ 26.512786][ T373] __kmalloc_track_caller+0x169/0x2c0 [ 26.518135][ T373] __alloc_skb+0x210/0x730 [ 26.522534][ T373] netlink_ack+0x35c/0xb10 [ 26.526930][ T373] netlink_rcv_skb+0x267/0x430 [ 26.531672][ T373] rtnetlink_rcv+0x1c/0x20 [ 26.536070][ T373] netlink_unicast+0x86c/0xa30 [ 26.540812][ T373] netlink_sendmsg+0x879/0xb80 [ 26.545555][ T373] __sys_sendto+0x46d/0x620 [ 26.550033][ T373] __x64_sys_sendto+0xe5/0x100 [ 26.554771][ T373] page last free stack trace: [ 26.559418][ T373] free_unref_page_prepare+0x5fa/0x600 [ 26.564854][ T373] free_unref_page+0xae/0x540 [ 26.569509][ T373] __free_pages+0x6c/0x100 [ 26.573902][ T373] __vunmap+0x801/0x980 [ 26.578036][ T373] vfree+0x8b/0xc0 [ 26.581732][ T373] kcov_close+0x2b/0x50 [ 26.585868][ T373] __fput+0x22b/0x900 [ 26.589828][ T373] ____fput+0x15/0x20 [ 26.594480][ T373] task_work_run+0x127/0x190 [ 26.599049][ T373] do_exit+0xb70/0x29a0 [ 26.603181][ T373] do_group_exit+0x149/0x310 [ 26.607747][ T373] get_signal+0x64f/0x1430 [ 26.612140][ T373] arch_do_signal_or_restart+0xe2/0x1100 [ 26.617750][ T373] exit_to_user_mode_loop+0xa7/0xe0 [ 26.622927][ T373] exit_to_user_mode_prepare+0x87/0xd0 [ 26.628363][ T373] syscall_exit_to_user_mode+0x1a/0x30 [ 26.633803][ T373] [ 26.636104][ T373] Memory state around the buggy address: [ 26.641713][ T373] ffff88812dc7d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.649754][ T373] ffff88812dc7d080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.657792][ T373] >ffff88812dc7d100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.665824][ T373] ^ [ 26.672471][ T373] ffff88812dc7d180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.680507][ T373] ffff88812dc7d200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.688540][ T373] =============================================