T28] audit: type=1400 audit(1781155176.156:62): avc: denied { rlimitinh } for pid=225 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.479527][ T28] audit: type=1400 audit(1781155176.156:63): avc: denied { siginh } for pid=225 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.99' (ED25519) to the list of known hosts. 2026/06/11 05:19:46 parsed 1 programs [ 24.477829][ T28] audit: type=1400 audit(1781155186.166:64): avc: denied { node_bind } for pid=295 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 24.498638][ T28] audit: type=1400 audit(1781155186.166:65): avc: denied { module_request } for pid=295 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 [ 25.265736][ T28] audit: type=1400 audit(1781155186.956:66): avc: denied { mounton } for pid=303 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 [ 25.266773][ T303] cgroup: Unknown subsys name 'net' [ 25.288599][ T28] audit: type=1400 audit(1781155186.956:67): avc: denied { mount } for pid=303 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 [ 25.316500][ T28] audit: type=1400 audit(1781155186.976:68): avc: denied { unmount } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 25.316651][ T303] cgroup: Unknown subsys name 'devices' [ 25.436928][ T303] cgroup: Unknown subsys name 'hugetlb' [ 25.442565][ T303] cgroup: Unknown subsys name 'rlimit' [ 25.580198][ T28] audit: type=1400 audit(1781155187.266:69): avc: denied { setattr } for pid=303 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=258 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 25.603537][ T28] audit: type=1400 audit(1781155187.266:70): avc: denied { create } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.612112][ T305] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 25.624152][ T28] audit: type=1400 audit(1781155187.266:71): avc: denied { write } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.652833][ T28] audit: type=1400 audit(1781155187.266:72): avc: denied { read } for pid=303 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 [ 25.673155][ T28] audit: type=1400 audit(1781155187.266:73): avc: denied { mounton } for pid=303 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 [ 25.702978][ T303] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 26.443291][ T308] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.450673][ T308] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.458593][ T308] device bridge_slave_0 entered promiscuous mode [ 26.465977][ T308] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.473031][ T308] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.480850][ T308] device bridge_slave_1 entered promiscuous mode [ 26.519343][ T308] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.526508][ T308] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.533839][ T308] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.540911][ T308] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.559658][ T43] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.567020][ T43] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.574357][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 26.582143][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.591045][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.599287][ T43] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.606339][ T43] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.615328][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.623592][ T43] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.630654][ T43] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.642916][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.652601][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.666564][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.677760][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.686048][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.693398][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.701609][ T308] device veth0_vlan entered promiscuous mode [ 26.711942][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.721008][ T308] device veth1_macvtap entered promiscuous mode [ 26.730551][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.740792][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.758464][ T308] request_module fs-gadgetfs succeeded, but still no fs? [ 26.782576][ T308] syz-executor (308) used greatest stack depth: 21912 bytes left [ 27.195867][ T43] device bridge_slave_1 left promiscuous mode [ 27.202070][ T43] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.210114][ T43] device bridge_slave_0 left promiscuous mode [ 27.216538][ T43] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.224839][ T43] device veth1_macvtap left promiscuous mode [ 27.236365][ T43] device veth0_vlan left promiscuous mode 2026/06/11 05:19:49 executed programs: 0 [ 27.631960][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.639348][ T368] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.647059][ T368] device bridge_slave_0 entered promiscuous mode [ 27.653862][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.661021][ T368] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.668651][ T368] device bridge_slave_1 entered promiscuous mode [ 27.705218][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.712282][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.719559][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.726607][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.744267][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.751878][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.759166][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.768139][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.776372][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.783581][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.792419][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.800669][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.807718][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.819620][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.828787][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.842388][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.853539][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.861747][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.869374][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.877657][ T368] device veth0_vlan entered promiscuous mode [ 27.887392][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.896678][ T368] device veth1_macvtap entered promiscuous mode [ 27.906113][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.917457][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.940460][ T373] ================================================================== [ 27.948563][ T373] BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 [ 27.955324][ T373] Write of size 8 at addr ffff88812ccce150 by task syz.2.17/373 [ 27.963036][ T373] [ 27.965350][ T373] CPU: 0 PID: 373 Comm: syz.2.17 Not tainted syzkaller #0 [ 27.972454][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 27.982596][ T373] Call Trace: [ 27.985871][ T373] [ 27.988846][ T373] __dump_stack+0x21/0x24 [ 27.993212][ T373] dump_stack_lvl+0x110/0x170 [ 27.997888][ T373] ? __cfi_dump_stack_lvl+0x8/0x8 [ 28.002913][ T373] ? mutex_lock+0x86/0x1b0 [ 28.007409][ T373] print_address_description+0x71/0x200 [ 28.012972][ T373] print_report+0x4a/0x60 [ 28.017304][ T373] kasan_report+0x122/0x150 [ 28.021803][ T373] ? mutex_lock+0x86/0x1b0 [ 28.026219][ T373] kasan_check_range+0x249/0x2a0 [ 28.031150][ T373] __kasan_check_write+0x14/0x20 [ 28.036077][ T373] mutex_lock+0x86/0x1b0 [ 28.040316][ T373] ? __cfi_mutex_lock+0x10/0x10 [ 28.045166][ T373] ? l2tp_session_put+0xaf/0x1a0 [ 28.050094][ T373] ? l2tp_session_delete+0x3f0/0x4e0 [ 28.055372][ T373] pppol2tp_release+0x194/0x2d0 [ 28.060216][ T373] sock_close+0xf1/0x290 [ 28.064537][ T373] ? __cfi_sock_close+0x10/0x10 [ 28.069378][ T373] __fput+0x1fc/0x8f0 [ 28.073526][ T373] ____fput+0x15/0x20 [ 28.077526][ T373] task_work_run+0x1e1/0x250 [ 28.082110][ T373] ? __cfi_task_work_run+0x10/0x10 [ 28.087212][ T373] ? __cfi___close_range+0x10/0x10 [ 28.092314][ T373] exit_to_user_mode_loop+0x9b/0xb0 [ 28.097504][ T373] exit_to_user_mode_prepare+0x87/0xd0 [ 28.102952][ T373] syscall_exit_to_user_mode+0x1a/0x30 [ 28.108420][ T373] do_syscall_64+0x58/0xa0 [ 28.112844][ T373] ? clear_bhb_loop+0x30/0x80 [ 28.117528][ T373] ? clear_bhb_loop+0x30/0x80 [ 28.122211][ T373] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.128106][ T373] RIP: 0033:0x7f9b2db9ce59 [ 28.132513][ 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 [ 28.152134][ T373] RSP: 002b:00007ffe0be009f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 28.160542][ T373] RAX: 0000000000000000 RBX: 00007ffe0be00ae0 RCX: 00007f9b2db9ce59 [ 28.168507][ T373] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 28.176488][ T373] RBP: 0000000000006d13 R08: 0000000000000001 R09: 0000000000000000 [ 28.184447][ T373] R10: 0000001b32f20000 R11: 0000000000000246 R12: 0000000000000000 [ 28.192417][ T373] R13: 00007f9b2de15fac R14: 00007f9b2de15fa8 R15: 00007f9b2de15fa0 [ 28.200385][ T373] [ 28.203404][ T373] [ 28.205724][ T373] Allocated by task 373: [ 28.210149][ T373] kasan_set_track+0x4b/0x70 [ 28.214745][ T373] kasan_save_alloc_info+0x25/0x30 [ 28.219849][ T373] __kasan_kmalloc+0x95/0xb0 [ 28.224430][ T373] __kmalloc+0xb1/0x1e0 [ 28.228658][ T373] l2tp_session_create+0x38/0xbe0 [ 28.233679][ T373] pppol2tp_connect+0xbef/0x1620 [ 28.238639][ T373] __sys_connect+0x3da/0x460 [ 28.243226][ T373] __x64_sys_connect+0x7a/0x90 [ 28.247979][ T373] x64_sys_call+0x88d/0x9a0 [ 28.252469][ T373] do_syscall_64+0x4c/0xa0 [ 28.256887][ T373] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.262796][ T373] [ 28.265107][ T373] Freed by task 373: [ 28.268985][ T373] kasan_set_track+0x4b/0x70 [ 28.273561][ T373] kasan_save_free_info+0x31/0x50 [ 28.278572][ T373] ____kasan_slab_free+0x132/0x180 [ 28.283676][ T373] __kasan_slab_free+0x11/0x20 [ 28.288428][ T373] slab_free_freelist_hook+0xc2/0x190 [ 28.293789][ T373] __kmem_cache_free+0xb7/0x1b0 [ 28.298627][ T373] kfree+0x6f/0xf0 [ 28.302364][ T373] l2tp_session_put+0xaf/0x1a0 [ 28.307117][ T373] l2tp_session_delete+0x3f0/0x4e0 [ 28.312241][ T373] pppol2tp_release+0x185/0x2d0 [ 28.317079][ T373] sock_close+0xf1/0x290 [ 28.321313][ T373] __fput+0x1fc/0x8f0 [ 28.325317][ T373] ____fput+0x15/0x20 [ 28.329287][ T373] task_work_run+0x1e1/0x250 [ 28.333868][ T373] exit_to_user_mode_loop+0x9b/0xb0 [ 28.339077][ T373] exit_to_user_mode_prepare+0x87/0xd0 [ 28.344737][ T373] syscall_exit_to_user_mode+0x1a/0x30 [ 28.350388][ T373] do_syscall_64+0x58/0xa0 [ 28.354816][ T373] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.360769][ T373] [ 28.363098][ T373] The buggy address belongs to the object at ffff88812ccce000 [ 28.363098][ T373] which belongs to the cache kmalloc-512 of size 512 [ 28.377324][ T373] The buggy address is located 336 bytes inside of [ 28.377324][ T373] 512-byte region [ffff88812ccce000, ffff88812ccce200) [ 28.390951][ T373] [ 28.393312][ T373] The buggy address belongs to the physical page: [ 28.399722][ T373] page:ffffea0004b33300 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12cccc [ 28.410141][ T373] head:ffffea0004b33300 order:2 compound_mapcount:0 compound_pincount:0 [ 28.418485][ T373] flags: 0x4000000000010200(slab|head|zone=1) [ 28.424568][ T373] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 28.433250][ T373] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 28.441825][ T373] page dumped because: kasan: bad access detected [ 28.448325][ T373] page_owner tracks the page as allocated [ 28.454033][ 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 373, tgid 373 (syz.2.17), ts 27939779366, free_ts 27265473691 [ 28.476360][ T373] post_alloc_hook+0x1f5/0x210 [ 28.481141][ T373] prep_new_page+0x1c/0x110 [ 28.485649][ T373] get_page_from_freelist+0x2d12/0x2d80 [ 28.491306][ T373] __alloc_pages+0x1fa/0x610 [ 28.496171][ T373] alloc_slab_page+0x6e/0xf0 [ 28.500943][ T373] new_slab+0x98/0x3d0 [ 28.505183][ T373] ___slab_alloc+0x6bd/0xb20 [ 28.509951][ T373] __slab_alloc+0x5e/0xa0 [ 28.514328][ T373] __kmem_cache_alloc_node+0x203/0x2c0 [ 28.519879][ T373] kmalloc_trace+0x29/0xb0 [ 28.524305][ T373] l2tp_tunnel_create+0x97/0x430 [ 28.529338][ T373] pppol2tp_connect+0x7e2/0x1620 [ 28.534312][ T373] __sys_connect+0x3da/0x460 [ 28.539004][ T373] __x64_sys_connect+0x7a/0x90 [ 28.543952][ T373] x64_sys_call+0x88d/0x9a0 [ 28.548455][ T373] do_syscall_64+0x4c/0xa0 [ 28.552874][ T373] page last free stack trace: [ 28.557538][ T373] free_unref_page_prepare+0x7f8/0x800 [ 28.563091][ T373] free_unref_page+0x95/0x540 [ 28.567768][ T373] __free_pages+0x67/0x100 [ 28.572186][ T373] __vunmap+0x9c0/0xb80 [ 28.576342][ T373] vfree+0x61/0x90 [ 28.580058][ T373] kcov_close+0x2b/0x50 [ 28.584295][ T373] __fput+0x1fc/0x8f0 [ 28.588283][ T373] ____fput+0x15/0x20 [ 28.592272][ T373] task_work_run+0x1e1/0x250 [ 28.597017][ T373] do_exit+0xa35/0x2660 [ 28.601203][ T373] do_group_exit+0x225/0x2e0 [ 28.605891][ T373] get_signal+0x13b5/0x1520 [ 28.610416][ T373] arch_do_signal_or_restart+0xd1/0x1140 [ 28.616050][ T373] exit_to_user_mode_loop+0x7a/0xb0 [ 28.621249][ T373] exit_to_user_mode_prepare+0x87/0xd0 [ 28.626878][ T373] syscall_exit_to_user_mode+0x1a/0x30 [ 28.632340][ T373] [ 28.634666][ T373] Memory state around the buggy address: [ 28.640290][ T373] ffff88812ccce000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.648348][ T373] ffff88812ccce080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.656399][ T373] >ffff88812ccce100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.664454][ T373] ^ [ 28.671118][ T373] ffff88812ccce180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.679171][ T373] ffff88812ccce200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.687225][ T373] ================================================================== [ 28.698058][ T373] Disabling lock debugging due to kernel taint