syzkaller
syzkaller login: [ 14.560309][ T28] kauditd_printk_skb: 31 callbacks suppressed
[ 14.560325][ T28] audit: type=1400 audit(1786495448.446:59): avc: denied { transition } for pid=224 comm="sshd-session" path="/bin/sh" dev="sda1" ino=90 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[ 14.565006][ T28] audit: type=1400 audit(1786495448.446:60): avc: denied { noatsecure } for pid=224 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[ 14.569087][ T28] audit: type=1400 audit(1786495448.456:61): avc: denied { write } for pid=224 comm="sh" path="pipe:[11715]" dev="pipefs" ino=11715 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1
[ 14.572658][ T28] audit: type=1400 audit(1786495448.456:62): avc: denied { rlimitinh } for pid=224 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[ 14.575649][ T28] audit: type=1400 audit(1786495448.456:63): avc: denied { siginh } for pid=224 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
Warning: Permanently added '10.128.1.19' (ED25519) to the list of known hosts.
2026/08/12 00:44:18 parsed 1 programs
2026/08/12 00:44:18 serving rpc on tcp://33437
[ 24.357315][ T28] audit: type=1400 audit(1786495458.236:64): 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
[ 24.378286][ T28] audit: type=1400 audit(1786495458.246:65): 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
[ 25.562926][ T28] audit: type=1400 audit(1786495459.446:66): avc: denied { mounton } for pid=301 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
[ 25.566629][ T301] cgroup: Unknown subsys name 'net'
[ 25.585825][ T28] audit: type=1400 audit(1786495459.446:67): avc: denied { mount } for pid=301 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
[ 25.613796][ T28] audit: type=1400 audit(1786495459.476:68): avc: denied { unmount } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1
[ 25.614215][ T301] cgroup: Unknown subsys name 'devices'
[ 25.760544][ T301] cgroup: Unknown subsys name 'hugetlb'
[ 25.766190][ T301] cgroup: Unknown subsys name 'rlimit'
[ 25.879611][ T28] audit: type=1400 audit(1786495459.766:69): avc: denied { setattr } for pid=301 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
[ 25.903206][ T28] audit: type=1400 audit(1786495459.766:70): avc: denied { create } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 25.923905][ T28] audit: type=1400 audit(1786495459.766:71): avc: denied { write } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 25.944384][ T28] audit: type=1400 audit(1786495459.766:72): avc: denied { read } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 25.964657][ T28] audit: type=1400 audit(1786495459.766:73): avc: denied { mounton } for pid=301 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
[ 25.976663][ T305] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped).
Setting up swapspace version 1, size = 127995904 bytes
[ 26.045516][ T301] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 26.790210][ T308] request_module fs-gadgetfs succeeded, but still no fs?
[ 27.166058][ T331] bridge0: port 1(bridge_slave_0) entered blocking state
[ 27.173625][ T331] bridge0: port 1(bridge_slave_0) entered disabled state
[ 27.181172][ T331] device bridge_slave_0 entered promiscuous mode
[ 27.188195][ T331] bridge0: port 2(bridge_slave_1) entered blocking state
[ 27.195359][ T331] bridge0: port 2(bridge_slave_1) entered disabled state
[ 27.202857][ T331] device bridge_slave_1 entered promiscuous mode
[ 27.250910][ T331] bridge0: port 2(bridge_slave_1) entered blocking state
[ 27.258537][ T331] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 27.265837][ T331] bridge0: port 1(bridge_slave_0) entered blocking state
[ 27.273135][ T331] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 27.294177][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 27.301886][ T10] bridge0: port 1(bridge_slave_0) entered disabled state
[ 27.309893][ T10] bridge0: port 2(bridge_slave_1) entered disabled state
[ 27.320425][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 27.328907][ T10] bridge0: port 1(bridge_slave_0) entered blocking state
[ 27.336058][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 27.345259][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 27.353683][ T10] bridge0: port 2(bridge_slave_1) entered blocking state
[ 27.360743][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 27.374919][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 27.384389][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 27.399680][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 27.411927][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 27.420737][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 27.428201][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 27.436818][ T331] device veth0_vlan entered promiscuous mode
[ 27.450211][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 27.460174][ T331] device veth1_macvtap entered promiscuous mode
[ 27.470168][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 27.481526][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 27.515322][ T331] syz-executor (331) used greatest stack depth: 21024 bytes left
2026/08/12 00:44:21 executed programs: 0
[ 28.089818][ T371] bridge0: port 1(bridge_slave_0) entered blocking state
[ 28.096897][ T371] bridge0: port 1(bridge_slave_0) entered disabled state
[ 28.104448][ T371] device bridge_slave_0 entered promiscuous mode
[ 28.111744][ T371] bridge0: port 2(bridge_slave_1) entered blocking state
[ 28.118912][ T371] bridge0: port 2(bridge_slave_1) entered disabled state
[ 28.126387][ T371] device bridge_slave_1 entered promiscuous mode
[ 28.195283][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[ 28.203027][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 28.215627][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[ 28.224496][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 28.232816][ T10] bridge0: port 1(bridge_slave_0) entered blocking state
[ 28.239874][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 28.247351][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready
[ 28.256716][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
[ 28.265242][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 28.273494][ T10] bridge0: port 2(bridge_slave_1) entered blocking state
[ 28.280639][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 28.293389][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready
[ 28.301649][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 28.311208][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 28.326758][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 28.339363][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 28.347702][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 28.355416][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 28.363605][ T371] device veth0_vlan entered promiscuous mode
[ 28.374294][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 28.383707][ T371] device veth1_macvtap entered promiscuous mode
[ 28.393283][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
[ 28.402259][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 28.412478][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
[ 28.420952][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 28.447464][ T375] ==================================================================
[ 28.455578][ T375] BUG: KASAN: use-after-free in pppol2tp_sock_to_session+0x1a0/0x1b0
[ 28.463695][ T375] Read of size 4 at addr ffff88812de18800 by task syz.2.17/375
[ 28.471243][ T375]
[ 28.473603][ T375] CPU: 1 PID: 375 Comm: syz.2.17 Not tainted syzkaller #0
[ 28.480885][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[ 28.490970][ T375] Call Trace:
[ 28.494251][ T375]
[ 28.497203][ T375] __dump_stack+0x21/0x24
[ 28.501562][ T375] dump_stack_lvl+0x110/0x170
[ 28.506429][ T375] ? __cfi_dump_stack_lvl+0x8/0x8
[ 28.511549][ T375] ? _raw_spin_lock_bh+0x94/0xf0
[ 28.516518][ T375] ? pppol2tp_sock_to_session+0x1a0/0x1b0
[ 28.522260][ T375] print_address_description+0x71/0x200
[ 28.527809][ T375] print_report+0x4a/0x60
[ 28.532142][ T375] kasan_report+0x122/0x150
[ 28.536652][ T375] ? pppol2tp_sock_to_session+0x1a0/0x1b0
[ 28.542375][ T375] __asan_report_load4_noabort+0x14/0x20
[ 28.548012][ T375] pppol2tp_sock_to_session+0x1a0/0x1b0
[ 28.553577][ T375] pppol2tp_release+0x150/0x2b0
[ 28.558435][ T375] sock_close+0xc9/0x220
[ 28.562782][ T375] ? __cfi_sock_close+0x10/0x10
[ 28.567649][ T375] __fput+0x1fd/0x8f0
[ 28.571703][ T375] ____fput+0x15/0x20
[ 28.575800][ T375] task_work_run+0x1e1/0x250
[ 28.580412][ T375] ? __cfi_task_work_run+0x10/0x10
[ 28.585543][ T375] ? __cfi___close_range+0x10/0x10
[ 28.590662][ T375] exit_to_user_mode_loop+0x9b/0xb0
[ 28.595880][ T375] exit_to_user_mode_prepare+0x87/0xd0
[ 28.601368][ T375] syscall_exit_to_user_mode+0x1a/0x30
[ 28.606875][ T375] do_syscall_64+0x58/0xa0
[ 28.611579][ T375] ? clear_bhb_loop+0x30/0x80
[ 28.616796][ T375] ? clear_bhb_loop+0x30/0x80
[ 28.621586][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 28.627502][ T375] RIP: 0033:0x7fcabd59e0d9
[ 28.631939][ T375] 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
[ 28.651835][ T375] RSP: 002b:00007ffd5cf64cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
[ 28.660298][ T375] RAX: 0000000000000000 RBX: 00007ffd5cf64de0 RCX: 00007fcabd59e0d9
[ 28.668299][ T375] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
[ 28.676472][ T375] RBP: 0000000000006f00 R08: 0000000000000001 R09: 0000000000000000
[ 28.684492][ T375] R10: 0000001b33220000 R11: 0000000000000246 R12: 0000000000000000
[ 28.692506][ T375] R13: 00007fcabd825fac R14: 00007fcabd825fa8 R15: 00007fcabd825fa0
[ 28.700510][ T375]
[ 28.703561][ T375]
[ 28.705897][ T375] Allocated by task 375:
[ 28.710153][ T375] kasan_set_track+0x4b/0x70
[ 28.714771][ T375] kasan_save_alloc_info+0x1f/0x30
[ 28.719913][ T375] __kasan_kmalloc+0x95/0xb0
[ 28.724553][ T375] __kmalloc+0xb4/0x1e0
[ 28.728755][ T375] l2tp_session_create+0x38/0xbd0
[ 28.733975][ T375] pppol2tp_connect+0xbf5/0x1640
[ 28.738939][ T375] __sys_connect+0x3da/0x460
[ 28.743557][ T375] __x64_sys_connect+0x7a/0x90
[ 28.748347][ T375] x64_sys_call+0x88d/0x9a0
[ 28.752883][ T375] do_syscall_64+0x4c/0xa0
[ 28.757328][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 28.763251][ T375]
[ 28.765593][ T375] Freed by task 316:
[ 28.769497][ T375] kasan_set_track+0x4b/0x70
[ 28.774113][ T375] kasan_save_free_info+0x2b/0x40
[ 28.779252][ T375] ____kasan_slab_free+0x132/0x180
[ 28.784387][ T375] __kasan_slab_free+0x11/0x20
[ 28.789433][ T375] slab_free_freelist_hook+0xc2/0x190
[ 28.794823][ T375] __kmem_cache_free+0xb7/0x1b0
[ 28.799699][ T375] kfree+0x6f/0xf0
[ 28.803442][ T375] l2tp_session_put+0xaf/0x1a0
[ 28.808229][ T375] l2tp_session_delete+0x3df/0x4d0
[ 28.813365][ T375] l2tp_tunnel_del_work+0x199/0x410
[ 28.818586][ T375] process_one_work+0x717/0xc30
[ 28.823462][ T375] worker_thread+0xa4d/0x11d0
[ 28.828166][ T375] kthread+0x281/0x320
[ 28.832256][ T375] ret_from_fork+0x1f/0x30
[ 28.836700][ T375]
[ 28.839046][ T375] The buggy address belongs to the object at ffff88812de18800
[ 28.839046][ T375] which belongs to the cache kmalloc-512 of size 512
[ 28.853126][ T375] The buggy address is located 0 bytes inside of
[ 28.853126][ T375] 512-byte region [ffff88812de18800, ffff88812de18a00)
[ 28.866272][ T375]
[ 28.868637][ T375] The buggy address belongs to the physical page:
[ 28.875082][ T375] page:ffffea0004b78600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12de18
[ 28.885453][ T375] head:ffffea0004b78600 order:2 compound_mapcount:0 compound_pincount:0
[ 28.893796][ T375] flags: 0x4000000000010200(slab|head|zone=1)
[ 28.899897][ T375] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00
[ 28.908505][ T375] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 28.917287][ T375] page dumped because: kasan: bad access detected
[ 28.923811][ T375] page_owner tracks the page as allocated
[ 28.929980][ T375] 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 371, tgid 371 (syz-executor), ts 28433777705, free_ts 27742371928
[ 28.952581][ T375] post_alloc_hook+0x1f5/0x210
[ 28.957447][ T375] prep_new_page+0x1c/0x110
[ 28.961979][ T375] get_page_from_freelist+0x2ca9/0x2d20
[ 28.967558][ T375] __alloc_pages+0x1fa/0x610
[ 28.972182][ T375] alloc_slab_page+0x6e/0xf0
[ 28.976791][ T375] new_slab+0x98/0x3e0
[ 28.981230][ T375] ___slab_alloc+0x70f/0xb70
[ 28.985856][ T375] __slab_alloc+0x5e/0xa0
[ 28.990223][ T375] __kmem_cache_alloc_node+0x204/0x2d0
[ 28.995824][ T375] __kmalloc_node_track_caller+0xa1/0x1e0
[ 29.001566][ T375] __alloc_skb+0x226/0x4a0
[ 29.006006][ T375] netlink_sendmsg+0x635/0xbd0
[ 29.010795][ T375] __sys_sendto+0x4ac/0x660
[ 29.015320][ T375] __x64_sys_sendto+0xe5/0x100
[ 29.020200][ T375] x64_sys_call+0x83/0x9a0
[ 29.024638][ T375] do_syscall_64+0x4c/0xa0
[ 29.029110][ T375] page last free stack trace:
[ 29.033796][ T375] free_unref_page_prepare+0x80c/0x820
[ 29.039376][ T375] free_unref_page_list+0x117/0x8d0
[ 29.044600][ T375] release_pages+0xc7e/0xce0
[ 29.049212][ T375] free_pages_and_swap_cache+0x86/0xa0
[ 29.054706][ T375] tlb_finish_mmu+0x1b2/0x380
[ 29.059403][ T375] exit_mmap+0x41d/0xc10
[ 29.063663][ T375] __mmput+0x92/0x340
[ 29.067672][ T375] mmput+0x4b/0x150
[ 29.071505][ T375] do_exit+0xa51/0x2850
[ 29.075695][ T375] do_group_exit+0x21b/0x2e0
[ 29.080312][ T375] __x64_sys_exit_group+0x3f/0x40
[ 29.085368][ T375] x64_sys_call+0x7b4/0x9a0
[ 29.090065][ T375] do_syscall_64+0x4c/0xa0
[ 29.094505][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 29.100436][ T375]
[ 29.102775][ T375] Memory state around the buggy address:
[ 29.108421][ T375] ffff88812de18700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 29.116496][ T375] ffff88812de18780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 29.124580][ T375] >ffff88812de18800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 29.132656][ T375] ^
[ 29.136768][ T375] ffff88812de18880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 29.145547][ T375] ffff88812de18900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 29.153621][ T375] ==================================================================
[ 29.169755][ T375] Disabling lock debugging due to kernel taint
[ 29.176247][ T375] ------------[ cut here ]------------
[ 29.181887][ T375] WARNING: CPU: 0 PID: 375 at net/l2tp/l2tp_ppp.c:156 pppol2tp_sock_to_session+0x167/0x1b0
[ 29.192061][ T375] Modules linked in:
[ 29.196037][ T375] CPU: 0 PID: 375 Comm: syz.2.17 Tainted: G B syzkaller #0
[ 29.204732][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[ 29.214830][ T375] RIP: 0010:pppol2tp_sock_to_session+0x167/0x1b0
[ 29.221223][ T375] Code: 5d c3 e8 5c b3 d5 fc be 02 00 00 00 eb 0a e8 50 b3 d5 fc be 01 00 00 00 4c 89 f7 e8 23 18 cd fd e9 0f ff ff ff e8 39 b3 d5 fc <0f> 0b 48 89 df e8 ff 00 00 00 eb bd e8 28 b3 d5 fc 4c 89 f7 be 03
[ 29.240883][ T375] RSP: 0018:ffffc900009a7cb0 EFLAGS: 00010293
[ 29.246990][ T375] RAX: ffffffff849bb307 RBX: ffff888115290000 RCX: ffff888113bf2880
[ 29.255034][ T375] RDX: 0000000000000000 RSI: 000000002f9a9fc0 RDI: 000000000c04eb7d
[ 29.263060][ T375] RBP: ffffc900009a7cd0 R08: ffffffff87b757e7 R09: 1ffffffff0f6eafc
[ 29.271091][ T375] R10: dffffc0000000000 R11: fffffbfff0f6eafd R12: dffffc0000000000
[ 29.279175][ T375] R13: dffffc0000000000 R14: 000000002f9a9fc0 R15: ffff88812de18800
[ 29.287154][ T375] FS: 0000555575eb8500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
[ 29.296134][ T375] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 29.302835][ T375] CR2: 00007fcabd827dac CR3: 000000012f4fb000 CR4: 00000000003506b0
[ 29.310863][ T375] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 29.318879][ T375] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 29.326854][ T375] Call Trace:
[ 29.330205][ T375]
[ 29.333159][ T375] pppol2tp_release+0x150/0x2b0
[ 29.338028][ T375] sock_close+0xc9/0x220
[ 29.342325][ T375] ? __cfi_sock_close+0x10/0x10
[ 29.347205][ T375] __fput+0x1fd/0x8f0
[ 29.351246][ T375] ____fput+0x15/0x20
[ 29.355253][ T375] task_work_run+0x1e1/0x250
[ 29.359952][ T375] ? __cfi_task_work_run+0x10/0x10
[ 29.365115][ T375] ? __cfi___close_range+0x10/0x10
[ 29.370471][ T375] exit_to_user_mode_loop+0x9b/0xb0
[ 29.375920][ T375] exit_to_user_mode_prepare+0x87/0xd0
[ 29.381579][ T375] syscall_exit_to_user_mode+0x1a/0x30
[ 29.387089][ T375] do_syscall_64+0x58/0xa0
[ 29.391587][ T375] ? clear_bhb_loop+0x30/0x80
[ 29.396414][ T375] ? clear_bhb_loop+0x30/0x80
[ 29.401189][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 29.407137][ T375] RIP: 0033:0x7fcabd59e0d9
[ 29.411635][ T375] 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
[ 29.431394][ T375] RSP: 002b:00007ffd5cf64cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
[ 29.439900][ T375] RAX: 0000000000000000 RBX: 00007ffd5cf64de0 RCX: 00007fcabd59e0d9
[ 29.447965][ T375] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
[ 29.456017][ T375] RBP: 0000000000006f00 R08: 0000000000000001 R09: 0000000000000000
[ 29.464037][ T375] R10: 0000001b33220000 R11: 0000000000000246 R12: 0000000000000000
[ 29.472051][ T375] R13: 00007fcabd825fac R14: 00007fcabd825fa8 R15: 00007fcabd825fa0
[ 29.480275][ T375]
[ 29.483416][ T375] ---[ end trace 0000000000000000 ]---