Warning: Permanently added '10.128.0.53' (ED25519) to the list of known hosts. 2026/07/17 01:54:23 parsed 1 programs 2026/07/17 01:54:23 serving rpc on tcp://41557 [ 22.600426][ T30] audit: type=1400 audit(1784253263.057:64): 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 [ 22.621218][ T30] audit: type=1400 audit(1784253263.057:65): 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 [ 23.302614][ T30] audit: type=1400 audit(1784253263.757:66): 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 [ 23.303575][ T299] cgroup: Unknown subsys name 'net' [ 23.325567][ T30] audit: type=1400 audit(1784253263.757:67): 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 [ 23.352864][ T30] audit: type=1400 audit(1784253263.787:68): 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 [ 23.353018][ T299] cgroup: Unknown subsys name 'devices' [ 23.468359][ T299] cgroup: Unknown subsys name 'hugetlb' [ 23.474003][ T299] cgroup: Unknown subsys name 'rlimit' [ 23.615048][ T30] audit: type=1400 audit(1784253264.067:69): 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 [ 23.638389][ T30] audit: type=1400 audit(1784253264.067:70): 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 [ 23.658896][ T30] audit: type=1400 audit(1784253264.067:71): 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 [ 23.679259][ T30] audit: type=1400 audit(1784253264.067:72): 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 [ 23.693243][ T303] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). Setting up swapspace version 1, size = 127995904 bytes [ 23.699574][ T30] audit: type=1400 audit(1784253264.067:73): 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 [ 23.759051][ T299] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 24.198428][ T305] request_module fs-gadgetfs succeeded, but still no fs? [ 24.581298][ T332] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.588393][ T332] bridge0: port 1(bridge_slave_0) entered disabled state [ 24.595707][ T332] device bridge_slave_0 entered promiscuous mode [ 24.603448][ T332] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.610507][ T332] bridge0: port 2(bridge_slave_1) entered disabled state [ 24.617918][ T332] device bridge_slave_1 entered promiscuous mode [ 24.654410][ T332] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.661676][ T332] bridge0: port 2(bridge_slave_1) entered forwarding state [ 24.669004][ T332] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.676508][ T332] bridge0: port 1(bridge_slave_0) entered forwarding state [ 24.693553][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 24.701440][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 24.708751][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 24.717677][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 24.725860][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.732914][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 24.751456][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 24.759602][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.766645][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 24.774255][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 24.782416][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 24.797233][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 24.807495][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 24.815520][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 24.823038][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 24.830993][ T332] device veth0_vlan entered promiscuous mode [ 24.841666][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 24.850768][ T332] device veth1_macvtap entered promiscuous mode [ 24.859460][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 24.869362][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 24.910212][ T332] syz-executor (332) used greatest stack depth: 21864 bytes left 2026/07/17 01:54:25 executed programs: 0 [ 25.330369][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.337640][ T368] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.345091][ T368] device bridge_slave_0 entered promiscuous mode [ 25.352157][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.359263][ T368] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.366732][ T368] device bridge_slave_1 entered promiscuous mode [ 25.404013][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.411084][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.418377][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.425403][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.448014][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.455889][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.463713][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.477696][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.485859][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.492900][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.500296][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.508597][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.515674][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.526719][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.535174][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.548215][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.561831][ T368] device veth0_vlan entered promiscuous mode [ 25.568650][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.576780][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.584253][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.595223][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.604248][ T368] device veth1_macvtap entered promiscuous mode [ 25.612931][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.622756][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 25.644967][ T372] ================================================================== [ 25.653503][ T372] BUG: KASAN: use-after-free in mutex_lock+0x8e/0x1c0 [ 25.660313][ T372] Write of size 8 at addr ffff88812c0d2150 by task syz.2.17/372 [ 25.667948][ T372] [ 25.673208][ T372] CPU: 0 PID: 372 Comm: syz.2.17 Not tainted syzkaller #0 [ 25.682509][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026 [ 25.692561][ T372] Call Trace: [ 25.695835][ T372] [ 25.698763][ T372] __dump_stack+0x21/0x30 [ 25.703518][ T372] dump_stack_lvl+0x110/0x170 [ 25.708576][ T372] ? show_regs_print_info+0x20/0x20 [ 25.713796][ T372] ? load_image+0x3f0/0x3f0 [ 25.718302][ T372] print_address_description+0x7f/0x2c0 [ 25.723962][ T372] ? mutex_lock+0x8e/0x1c0 [ 25.728378][ T372] kasan_report+0x10f/0x150 [ 25.732880][ T372] ? mutex_lock+0x8e/0x1c0 [ 25.737410][ T372] kasan_check_range+0x249/0x2a0 [ 25.742351][ T372] __kasan_check_write+0x14/0x20 [ 25.747291][ T372] mutex_lock+0x8e/0x1c0 [ 25.751527][ T372] ? wait_for_completion_killable_timeout+0x10/0x10 [ 25.758105][ T372] ? l2tp_session_put+0xaf/0x1a0 [ 25.763056][ T372] ? l2tp_session_delete+0x3a9/0x4a0 [ 25.768356][ T372] pppol2tp_release+0x178/0x2b0 [ 25.773203][ T372] sock_close+0xb8/0x200 [ 25.777428][ T372] ? sock_mmap+0xa0/0xa0 [ 25.781659][ T372] __fput+0x22b/0x900 [ 25.785650][ T372] ____fput+0x15/0x20 [ 25.789638][ T372] task_work_run+0x127/0x190 [ 25.794231][ T372] exit_to_user_mode_loop+0xd0/0xe0 [ 25.799415][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 25.804863][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 25.810306][ T372] do_syscall_64+0x58/0xa0 [ 25.814861][ T372] ? clear_bhb_loop+0x50/0xa0 [ 25.819593][ T372] ? clear_bhb_loop+0x50/0xa0 [ 25.824275][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 25.830157][ T372] RIP: 0033:0x7f5a91ad4e59 [ 25.834562][ T372] 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 [ 25.854157][ T372] RSP: 002b:00007fff2c4b9128 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 25.862558][ T372] RAX: 0000000000000000 RBX: 00007fff2c4b9210 RCX: 00007f5a91ad4e59 [ 25.870518][ T372] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 25.878483][ T372] RBP: 000000000000641b R08: 0000000000000001 R09: 0000000000000000 [ 25.886582][ T372] R10: 0000001b32f20000 R11: 0000000000000246 R12: 0000000000000000 [ 25.894556][ T372] R13: 00007f5a91d5cfac R14: 00007f5a91d5cfa8 R15: 00007f5a91d5cfa0 [ 25.902539][ T372] [ 25.905550][ T372] [ 25.907867][ T372] Allocated by task 372: [ 25.912090][ T372] __kasan_kmalloc+0xd4/0x100 [ 25.916754][ T372] __kmalloc+0x13d/0x2c0 [ 25.920993][ T372] l2tp_session_create+0x39/0xb60 [ 25.926008][ T372] pppol2tp_connect+0xbf5/0x1640 [ 25.930935][ T372] __sys_connect+0x3cb/0x450 [ 25.935547][ T372] __x64_sys_connect+0x7a/0x90 [ 25.940329][ T372] x64_sys_call+0x7c/0x9a0 [ 25.944743][ T372] do_syscall_64+0x4c/0xa0 [ 25.949148][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 25.955029][ T372] [ 25.957339][ T372] Freed by task 372: [ 25.961209][ T372] kasan_set_track+0x4a/0x70 [ 25.965780][ T372] kasan_set_free_info+0x23/0x40 [ 25.970700][ T372] ____kasan_slab_free+0x125/0x160 [ 25.975792][ T372] __kasan_slab_free+0x11/0x20 [ 25.980677][ T372] slab_free_freelist_hook+0xc2/0x190 [ 25.986045][ T372] kfree+0xc4/0x270 [ 25.989847][ T372] l2tp_session_put+0xaf/0x1a0 [ 25.994612][ T372] l2tp_session_delete+0x3a9/0x4a0 [ 25.999714][ T372] pppol2tp_release+0x169/0x2b0 [ 26.004554][ T372] sock_close+0xb8/0x200 [ 26.008811][ T372] __fput+0x22b/0x900 [ 26.012783][ T372] ____fput+0x15/0x20 [ 26.016766][ T372] task_work_run+0x127/0x190 [ 26.021342][ T372] exit_to_user_mode_loop+0xd0/0xe0 [ 26.026552][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 26.032034][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 26.037491][ T372] do_syscall_64+0x58/0xa0 [ 26.041895][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 26.047771][ T372] [ 26.050110][ T372] The buggy address belongs to the object at ffff88812c0d2000 [ 26.050110][ T372] which belongs to the cache kmalloc-512 of size 512 [ 26.064145][ T372] The buggy address is located 336 bytes inside of [ 26.064145][ T372] 512-byte region [ffff88812c0d2000, ffff88812c0d2200) [ 26.077405][ T372] The buggy address belongs to the page: [ 26.083021][ T372] page:ffffea0004b03400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12c0d0 [ 26.093241][ T372] head:ffffea0004b03400 order:2 compound_mapcount:0 compound_pincount:0 [ 26.101545][ T372] flags: 0x4000000000010200(slab|head|zone=1) [ 26.107602][ T372] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 26.116176][ T372] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 26.124740][ T372] page dumped because: kasan: bad access detected [ 26.131126][ T372] page_owner tracks the page as allocated [ 26.136820][ T372] 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 25639481582, free_ts 24483503453 [ 26.157206][ T372] post_alloc_hook+0x192/0x1b0 [ 26.161958][ T372] prep_new_page+0x1c/0x110 [ 26.166464][ T372] get_page_from_freelist+0x2c3a/0x2cd0 [ 26.171991][ T372] __alloc_pages+0x1a2/0x460 [ 26.176570][ T372] new_slab+0xa0/0x4d0 [ 26.180633][ T372] ___slab_alloc+0x3ac/0x840 [ 26.185211][ T372] __slab_alloc+0x49/0x90 [ 26.189523][ T372] kmem_cache_alloc_trace+0x146/0x270 [ 26.194913][ T372] find_css_set+0x91d/0x1560 [ 26.199485][ T372] cgroup_migrate_prepare_dst+0xc4/0xa00 [ 26.205101][ T372] cgroup_attach_task+0x298/0x520 [ 26.210112][ T372] __cgroup_procs_write+0x2b1/0x2e0 [ 26.215314][ T372] cgroup_procs_write+0x27/0x50 [ 26.220146][ T372] cgroup_file_write+0x294/0x560 [ 26.225064][ T372] kernfs_fop_write_iter+0x2bd/0x400 [ 26.230334][ T372] vfs_write+0x831/0xfd0 [ 26.234563][ T372] page last free stack trace: [ 26.239216][ T372] free_unref_page_prepare+0x5fa/0x600 [ 26.244659][ T372] free_unref_page+0xae/0x540 [ 26.249326][ T372] __free_pages+0x6c/0x100 [ 26.253748][ T372] __vunmap+0x801/0x980 [ 26.257890][ T372] vfree+0x8b/0xc0 [ 26.261592][ T372] kcov_close+0x2b/0x50 [ 26.265738][ T372] __fput+0x22b/0x900 [ 26.269705][ T372] ____fput+0x15/0x20 [ 26.273688][ T372] task_work_run+0x127/0x190 [ 26.278260][ T372] do_exit+0xb70/0x29a0 [ 26.282402][ T372] do_group_exit+0x149/0x310 [ 26.286974][ T372] get_signal+0x64f/0x1430 [ 26.291396][ T372] arch_do_signal_or_restart+0xe2/0x1100 [ 26.297012][ T372] exit_to_user_mode_loop+0xa7/0xe0 [ 26.302197][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 26.307635][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 26.313085][ T372] [ 26.315394][ T372] Memory state around the buggy address: [ 26.321015][ T372] ffff88812c0d2000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.329057][ T372] ffff88812c0d2080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.337277][ T372] >ffff88812c0d2100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.345319][ T372] ^ [ 26.351976][ T372] ffff88812c0d2180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.360028][ T372] ffff88812c0d2200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.368073][ T372] ================================================================== [ 26.376134][ T372] Disabling lock debugging due to kernel taint