Warning: Permanently added '10.128.0.208' (ED25519) to the list of known hosts. 2026/06/11 06:38:25 parsed 1 programs [ 29.061025][ T28] audit: type=1400 audit(1781159905.779:64): 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 [ 29.081696][ T28] audit: type=1400 audit(1781159905.779:65): 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 [ 29.772069][ T28] audit: type=1400 audit(1781159906.489:66): 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 [ 29.773668][ T303] cgroup: Unknown subsys name 'net' [ 29.794697][ T28] audit: type=1400 audit(1781159906.489:67): 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 [ 29.821958][ T28] audit: type=1400 audit(1781159906.519:68): 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 [ 29.822096][ T303] cgroup: Unknown subsys name 'devices' [ 29.949211][ T303] cgroup: Unknown subsys name 'hugetlb' [ 29.954789][ T303] cgroup: Unknown subsys name 'rlimit' [ 30.071996][ T28] audit: type=1400 audit(1781159906.789:69): 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 [ 30.095177][ T28] audit: type=1400 audit(1781159906.789:70): 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 [ 30.103097][ T306] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 30.115710][ T28] audit: type=1400 audit(1781159906.789:71): 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 [ 30.144277][ T28] audit: type=1400 audit(1781159906.789:72): 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 [ 30.164538][ T28] audit: type=1400 audit(1781159906.789:73): 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 [ 30.197253][ T303] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 30.794869][ T308] request_module fs-gadgetfs succeeded, but still no fs? [ 31.010124][ T322] syz-executor (322) used greatest stack depth: 21632 bytes left [ 31.038144][ T326] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.045165][ T326] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.052490][ T326] device bridge_slave_0 entered promiscuous mode [ 31.059220][ T326] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.066221][ T326] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.073530][ T326] device bridge_slave_1 entered promiscuous mode [ 31.108921][ T326] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.115931][ T326] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.123196][ T326] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.130216][ T326] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.146885][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 31.154479][ T327] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.161683][ T327] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.170811][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 31.179006][ T327] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.186006][ T327] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.199608][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 31.207769][ T327] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.214777][ T327] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.222176][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 31.230454][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 31.242625][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 31.253799][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 31.261729][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 31.269120][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 31.276990][ T326] device veth0_vlan entered promiscuous mode [ 31.287161][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 31.296795][ T326] device veth1_macvtap entered promiscuous mode [ 31.305479][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 31.315060][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/06/11 06:38:28 executed programs: 0 [ 31.892271][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.899330][ T370] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.906564][ T370] device bridge_slave_0 entered promiscuous mode [ 31.913339][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.920369][ T370] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.927620][ T370] device bridge_slave_1 entered promiscuous mode [ 31.967620][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.974655][ T370] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.981903][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.988922][ T370] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.009400][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.016853][ T327] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.024254][ T327] bridge0: port 2(bridge_slave_1) entered disabled state [ 32.033316][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 32.041823][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 32.050056][ T327] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.057055][ T327] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.069664][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 32.077903][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 32.085940][ T327] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.092956][ T327] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.103931][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 32.112302][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 32.123517][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 32.131575][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 32.143664][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 32.152222][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 32.161433][ T41] device bridge_slave_1 left promiscuous mode [ 32.167507][ T41] bridge0: port 2(bridge_slave_1) entered disabled state [ 32.175062][ T41] device bridge_slave_0 left promiscuous mode [ 32.181230][ T41] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.188975][ T41] device veth1_macvtap left promiscuous mode [ 32.195014][ T41] device veth0_vlan left promiscuous mode [ 32.292641][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 32.300491][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 32.308932][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 32.316591][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 32.324286][ T370] device veth0_vlan entered promiscuous mode [ 32.334664][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 32.342832][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 32.351658][ T370] device veth1_macvtap entered promiscuous mode [ 32.359935][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 32.367505][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 32.375722][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 32.385426][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 32.393733][ T327] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 32.416543][ T374] ================================================================== [ 32.424599][ T374] BUG: KASAN: use-after-free in pppol2tp_sock_to_session+0x1a0/0x1b0 [ 32.432652][ T374] Read of size 4 at addr ffff888108d21400 by task syz.2.17/374 [ 32.440164][ T374] [ 32.442466][ T374] CPU: 0 PID: 374 Comm: syz.2.17 Not tainted syzkaller #0 [ 32.449543][ T374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 32.459577][ T374] Call Trace: [ 32.462829][ T374] [ 32.465735][ T374] __dump_stack+0x21/0x24 [ 32.470038][ T374] dump_stack_lvl+0x110/0x170 [ 32.474686][ T374] ? __cfi_dump_stack_lvl+0x8/0x8 [ 32.479682][ T374] ? __cfi__printk+0x8/0x8 [ 32.484068][ T374] ? _raw_spin_lock_bh+0x94/0xf0 [ 32.488981][ T374] ? pppol2tp_sock_to_session+0x1a0/0x1b0 [ 32.494672][ T374] print_address_description+0x71/0x200 [ 32.500187][ T374] print_report+0x4a/0x60 [ 32.504491][ T374] kasan_report+0x122/0x150 [ 32.508965][ T374] ? pppol2tp_sock_to_session+0x1a0/0x1b0 [ 32.514655][ T374] __asan_report_load4_noabort+0x14/0x20 [ 32.520257][ T374] pppol2tp_sock_to_session+0x1a0/0x1b0 [ 32.525775][ T374] pppol2tp_release+0x16c/0x2d0 [ 32.530597][ T374] sock_close+0xf1/0x290 [ 32.534819][ T374] ? __cfi_sock_close+0x10/0x10 [ 32.539649][ T374] __fput+0x1fc/0x8f0 [ 32.543621][ T374] ____fput+0x15/0x20 [ 32.547576][ T374] task_work_run+0x1e1/0x250 [ 32.552147][ T374] ? __cfi_task_work_run+0x10/0x10 [ 32.557245][ T374] ? __cfi___close_range+0x10/0x10 [ 32.562340][ T374] exit_to_user_mode_loop+0x9b/0xb0 [ 32.567521][ T374] exit_to_user_mode_prepare+0x87/0xd0 [ 32.572961][ T374] syscall_exit_to_user_mode+0x1a/0x30 [ 32.578400][ T374] do_syscall_64+0x58/0xa0 [ 32.582809][ T374] ? clear_bhb_loop+0x30/0x80 [ 32.587465][ T374] ? clear_bhb_loop+0x30/0x80 [ 32.592120][ T374] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 32.597999][ T374] RIP: 0033:0x7f1a8879ce59 [ 32.602403][ T374] 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 [ 32.621987][ T374] RSP: 002b:00007ffe794afeb8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 32.630385][ T374] RAX: 0000000000000000 RBX: 00007ffe794affa0 RCX: 00007f1a8879ce59 [ 32.638338][ T374] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 32.646284][ T374] RBP: 0000000000007e97 R08: 0000000000000001 R09: 0000000000000000 [ 32.654232][ T374] R10: 0000001b33120000 R11: 0000000000000246 R12: 0000000000000000 [ 32.662179][ T374] R13: 00007f1a88a15fac R14: 00007f1a88a15fa8 R15: 00007f1a88a15fa0 [ 32.670135][ T374] [ 32.673133][ T374] [ 32.675433][ T374] Allocated by task 374: [ 32.679648][ T374] kasan_set_track+0x4b/0x70 [ 32.684218][ T374] kasan_save_alloc_info+0x25/0x30 [ 32.689306][ T374] __kasan_kmalloc+0x95/0xb0 [ 32.693876][ T374] __kmalloc+0xb1/0x1e0 [ 32.698005][ T374] l2tp_session_create+0x38/0xbe0 [ 32.703005][ T374] pppol2tp_connect+0xbef/0x1620 [ 32.707920][ T374] __sys_connect+0x3da/0x460 [ 32.712485][ T374] __x64_sys_connect+0x7a/0x90 [ 32.717233][ T374] x64_sys_call+0x88d/0x9a0 [ 32.721718][ T374] do_syscall_64+0x4c/0xa0 [ 32.726113][ T374] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 32.731990][ T374] [ 32.734288][ T374] Freed by task 10: [ 32.738068][ T374] kasan_set_track+0x4b/0x70 [ 32.742635][ T374] kasan_save_free_info+0x31/0x50 [ 32.747636][ T374] ____kasan_slab_free+0x132/0x180 [ 32.752726][ T374] __kasan_slab_free+0x11/0x20 [ 32.757467][ T374] slab_free_freelist_hook+0xc2/0x190 [ 32.762812][ T374] __kmem_cache_free+0xb7/0x1b0 [ 32.767645][ T374] kfree+0x6f/0xf0 [ 32.771348][ T374] l2tp_session_put+0xaf/0x1a0 [ 32.776089][ T374] l2tp_session_delete+0x3f0/0x4e0 [ 32.781177][ T374] l2tp_tunnel_del_work+0x1a1/0x410 [ 32.786352][ T374] process_one_work+0x71f/0xc40 [ 32.791180][ T374] worker_thread+0xa29/0x11e0 [ 32.795839][ T374] kthread+0x281/0x320 [ 32.799886][ T374] ret_from_fork+0x1f/0x30 [ 32.804281][ T374] [ 32.806584][ T374] The buggy address belongs to the object at ffff888108d21400 [ 32.806584][ T374] which belongs to the cache kmalloc-512 of size 512 [ 32.820610][ T374] The buggy address is located 0 bytes inside of [ 32.820610][ T374] 512-byte region [ffff888108d21400, ffff888108d21600) [ 32.833687][ T374] [ 32.835989][ T374] The buggy address belongs to the physical page: [ 32.842394][ T374] page:ffffea0004234800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x108d20 [ 32.852622][ T374] head:ffffea0004234800 order:2 compound_mapcount:0 compound_pincount:0 [ 32.860925][ T374] flags: 0x4000000000010200(slab|head|zone=1) [ 32.866979][ T374] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 32.875539][ T374] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 32.884095][ T374] page dumped because: kasan: bad access detected [ 32.890482][ T374] page_owner tracks the page as allocated [ 32.896169][ T374] 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 370, tgid 370 (syz-executor), ts 32409912362, free_ts 31619296525 [ 32.918714][ T374] post_alloc_hook+0x1f5/0x210 [ 32.923471][ T374] prep_new_page+0x1c/0x110 [ 32.927953][ T374] get_page_from_freelist+0x2d12/0x2d80 [ 32.933480][ T374] __alloc_pages+0x1fa/0x610 [ 32.938052][ T374] alloc_slab_page+0x6e/0xf0 [ 32.942617][ T374] new_slab+0x98/0x3d0 [ 32.946662][ T374] ___slab_alloc+0x6bd/0xb20 [ 32.951231][ T374] __slab_alloc+0x5e/0xa0 [ 32.955546][ T374] __kmem_cache_alloc_node+0x203/0x2c0 [ 32.960986][ T374] kmalloc_trace+0x29/0xb0 [ 32.965380][ T374] blkcg_css_alloc+0x65/0xc40 [ 32.970038][ T374] cgroup_apply_control_enable+0x392/0xe10 [ 32.975824][ T374] cgroup_mkdir+0x1167/0x13c0 [ 32.980477][ T374] kernfs_iop_mkdir+0x1bb/0x2c0 [ 32.985302][ T374] vfs_mkdir+0x39c/0x580 [ 32.989521][ T374] do_mkdirat+0x171/0x4c0 [ 32.993828][ T374] page last free stack trace: [ 32.998477][ T374] free_unref_page_prepare+0x7f8/0x800 [ 33.003917][ T374] free_unref_page+0x95/0x540 [ 33.008574][ T374] __free_pages+0x67/0x100 [ 33.012969][ T374] __vunmap+0x9c0/0xb80 [ 33.017101][ T374] vfree+0x61/0x90 [ 33.020797][ T374] kcov_close+0x2b/0x50 [ 33.024928][ T374] __fput+0x1fc/0x8f0 [ 33.028890][ T374] ____fput+0x15/0x20 [ 33.032850][ T374] task_work_run+0x1e1/0x250 [ 33.037419][ T374] do_exit+0xa35/0x2660 [ 33.041554][ T374] do_group_exit+0x225/0x2e0 [ 33.046127][ T374] get_signal+0x13b5/0x1520 [ 33.050612][ T374] arch_do_signal_or_restart+0xd1/0x1140 [ 33.056223][ T374] exit_to_user_mode_loop+0x7a/0xb0 [ 33.061399][ T374] exit_to_user_mode_prepare+0x87/0xd0 [ 33.066836][ T374] syscall_exit_to_user_mode+0x1a/0x30 [ 33.072270][ T374] [ 33.074570][ T374] Memory state around the buggy address: [ 33.080170][ T374] ffff888108d21300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.088205][ T374] ffff888108d21380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.096240][ T374] >ffff888108d21400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.104269][ T374] ^ [ 33.108314][ T374] ffff888108d21480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.116356][ T374] ffff888108d21500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.124388][ T374] ================================================================== [ 33.133296][ T374] Disabling lock debugging due to kernel taint [ 33.140119][ T374] ------------[ cut here ]------------ [ 33.145576][ T374] WARNING: CPU: 1 PID: 374 at net/l2tp/l2tp_ppp.c:156 pppol2tp_sock_to_session+0x167/0x1b0 [ 33.155650][ T374] Modules linked in: [ 33.159576][ T374] CPU: 1 PID: 374 Comm: syz.2.17 Tainted: G B syzkaller #0 [ 33.168232][ T374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 33.178363][ T374] RIP: 0010:pppol2tp_sock_to_session+0x167/0x1b0 [ 33.184693][ T374] Code: 5d c3 e8 ac 91 d4 fc be 02 00 00 00 eb 0a e8 a0 91 d4 fc be 01 00 00 00 4c 89 f7 e8 c3 50 cc fd e9 0f ff ff ff e8 89 91 d4 fc <0f> 0b 48 89 df e8 ff 00 00 00 eb bd e8 78 91 d4 fc 4c 89 f7 be 03 [ 33.204378][ T374] RSP: 0018:ffffc90003737c98 EFLAGS: 00010293 [ 33.210518][ T374] RAX: ffffffff849cebf7 RBX: ffff8881155c8000 RCX: ffff88811573a880 [ 33.218517][ T374] RDX: 0000000000000000 RSI: 0000000022621480 RDI: 000000000c04eb7d [ 33.226477][ T374] RBP: ffffc90003737cb8 R08: ffffffff87b767e7 R09: 1ffffffff0f6ecfc [ 33.234444][ T374] R10: dffffc0000000000 R11: fffffbfff0f6ecfd R12: dffffc0000000000 [ 33.242415][ T374] R13: 1ffff110248e11e3 R14: 0000000022621480 R15: ffff888108d21400 [ 33.250384][ T374] FS: 000055557ae84500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 33.259319][ T374] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.265874][ T374] CR2: 00007ffe794aefe0 CR3: 0000000114a34000 CR4: 00000000003506a0 [ 33.273837][ T374] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.281803][ T374] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.289767][ T374] Call Trace: [ 33.293031][ T374] [ 33.295937][ T374] pppol2tp_release+0x16c/0x2d0 [ 33.300784][ T374] sock_close+0xf1/0x290 [ 33.305022][ T374] ? __cfi_sock_close+0x10/0x10 [ 33.309885][ T374] __fput+0x1fc/0x8f0 [ 33.313864][ T374] ____fput+0x15/0x20 [ 33.317852][ T374] task_work_run+0x1e1/0x250 [ 33.322439][ T374] ? __cfi_task_work_run+0x10/0x10 [ 33.327530][ T374] ? __cfi___close_range+0x10/0x10 [ 33.332648][ T374] exit_to_user_mode_loop+0x9b/0xb0 [ 33.337851][ T374] exit_to_user_mode_prepare+0x87/0xd0 [ 33.343294][ T374] syscall_exit_to_user_mode+0x1a/0x30 [ 33.348756][ T374] do_syscall_64+0x58/0xa0 [ 33.353162][ T374] ? clear_bhb_loop+0x30/0x80 [ 33.357843][ T374] ? clear_bhb_loop+0x30/0x80 [ 33.362510][ T374] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 33.368403][ T374] RIP: 0033:0x7f1a8879ce59 [ 33.372807][ T374] 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 [ 33.392411][ T374] RSP: 002b:00007ffe794afeb8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 33.400832][ T374] RAX: 0000000000000000 RBX: 00007ffe794affa0 RCX: 00007f1a8879ce59 [ 33.408800][ T374] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 33.416771][ T374] RBP: 0000000000007e97 R08: 0000000000000001 R09: 0000000000000000 [ 33.424752][ T374] R10: 0000001b33120000 R11: 0000000000000246 R12: 0000000000000000 [ 33.432720][ T374] R13: 00007f1a88a15fac R14: 00007f1a88a15fa8 R15: 00007f1a88a15fa0 [ 33.440689][ T374] [ 33.443695][ T374] ---[ end trace 0000000000000000 ]---