syzkaller syzkaller login: [ 15.842236][ T24] kauditd_printk_skb: 5 callbacks suppressed [ 15.842249][ T24] audit: type=1400 audit(1782576261.810:59): avc: denied { transition } for pid=221 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 [ 15.853436][ T24] audit: type=1400 audit(1782576261.810:60): avc: denied { noatsecure } for pid=221 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 15.861207][ T24] audit: type=1400 audit(1782576261.820:61): avc: denied { write } for pid=221 comm="sh" path="pipe:[14022]" dev="pipefs" ino=14022 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 15.882714][ T24] audit: type=1400 audit(1782576261.820:62): avc: denied { rlimitinh } for pid=221 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 15.902035][ T24] audit: type=1400 audit(1782576261.820:63): avc: denied { siginh } for pid=221 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.66' (ED25519) to the list of known hosts. 2026/06/27 16:04:31 parsed 1 programs 2026/06/27 16:04:31 serving rpc on tcp://41289 [ 25.983265][ T24] audit: type=1400 audit(1782576271.950:64): avc: denied { node_bind } for pid=287 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 26.004169][ T24] audit: type=1400 audit(1782576271.950:65): avc: denied { create } for pid=287 comm="syz-execprog" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=rawip_socket permissive=1 [ 26.023947][ T24] audit: type=1400 audit(1782576271.960:66): avc: denied { module_request } for pid=287 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 [ 26.916481][ T24] audit: type=1400 audit(1782576272.890:67): avc: denied { mounton } for pid=293 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 [ 26.919578][ T293] cgroup: Unknown subsys name 'net' [ 26.939284][ T24] audit: type=1400 audit(1782576272.890:68): avc: denied { mount } for pid=293 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 [ 26.966507][ T24] audit: type=1400 audit(1782576272.920:69): avc: denied { unmount } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 26.966939][ T293] cgroup: Unknown subsys name 'devices' [ 27.136767][ T293] cgroup: Unknown subsys name 'hugetlb' [ 27.142381][ T293] cgroup: Unknown subsys name 'rlimit' [ 27.291322][ T24] audit: type=1400 audit(1782576273.260:70): avc: denied { setattr } for pid=293 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=253 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 27.314574][ T24] audit: type=1400 audit(1782576273.260:71): avc: denied { create } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 27.334968][ T24] audit: type=1400 audit(1782576273.260:72): avc: denied { write } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 27.346268][ T297] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 27.355517][ T24] audit: type=1400 audit(1782576273.260:73): avc: denied { read } for pid=293 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 [ 27.426705][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 27.896321][ T299] request_module fs-gadgetfs succeeded, but still no fs? [ 27.907363][ T299] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 28.372160][ T328] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.379637][ T328] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.387202][ T328] device bridge_slave_0 entered promiscuous mode [ 28.394146][ T328] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.401461][ T328] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.408944][ T328] device bridge_slave_1 entered promiscuous mode [ 28.451758][ T328] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.458872][ T328] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.466194][ T328] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.473232][ T328] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.491579][ T323] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.498849][ T323] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.507189][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 28.514613][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.523583][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.531803][ T323] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.538883][ T323] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.547550][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.555813][ T323] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.562851][ T323] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.574654][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 28.584018][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 28.597540][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 28.611926][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 28.620186][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 28.627690][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 28.636313][ T328] device veth0_vlan entered promiscuous mode [ 28.650421][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 28.659008][ T328] device veth1_macvtap entered promiscuous mode [ 28.668209][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.678035][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/06/27 16:04:35 executed programs: 0 [ 29.169029][ T383] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.176424][ T383] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.183794][ T383] device bridge_slave_0 entered promiscuous mode [ 29.191051][ T383] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.198236][ T383] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.205689][ T383] device bridge_slave_1 entered promiscuous mode [ 29.245036][ T383] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.252087][ T383] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.259369][ T383] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.266419][ T383] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.289762][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 29.297359][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.304554][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.318842][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 29.327165][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.334214][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.342950][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.351491][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.358561][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.370015][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 29.378138][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 29.391627][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 29.400036][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 29.413284][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 29.421824][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 29.433829][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 29.442001][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 29.451100][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 29.458692][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 29.470866][ T383] device veth0_vlan entered promiscuous mode [ 29.480353][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 29.488706][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 29.498316][ T383] device veth1_macvtap entered promiscuous mode [ 29.508803][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 29.516518][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 29.524662][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 29.534291][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 29.542720][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 29.570160][ T388] ================================================================== [ 29.578289][ T388] BUG: KASAN: use-after-free in pppol2tp_sock_to_session+0x1a0/0x1b0 [ 29.586351][ T388] Read of size 4 at addr ffff888111763c00 by task syz.2.17/388 [ 29.593879][ T388] [ 29.596213][ T388] CPU: 1 PID: 388 Comm: syz.2.17 Not tainted syzkaller #0 [ 29.603312][ T388] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 29.613379][ T388] Call Trace: [ 29.616672][ T388] __dump_stack+0x21/0x24 [ 29.620998][ T388] dump_stack_lvl+0x1a7/0x208 [ 29.625673][ T388] ? show_regs_print_info+0x18/0x18 [ 29.630864][ T388] ? thaw_kernel_threads+0x220/0x220 [ 29.636142][ T388] print_address_description+0x7f/0x2c0 [ 29.641679][ T388] ? pppol2tp_sock_to_session+0x1a0/0x1b0 [ 29.647394][ T388] kasan_report+0x100/0x140 [ 29.651891][ T388] ? __kasan_check_write+0x14/0x20 [ 29.657042][ T388] ? pppol2tp_sock_to_session+0x1a0/0x1b0 [ 29.662772][ T388] __asan_report_load4_noabort+0x14/0x20 [ 29.668398][ T388] pppol2tp_sock_to_session+0x1a0/0x1b0 [ 29.673944][ T388] pppol2tp_release+0x150/0x2b0 [ 29.678791][ T388] sock_close+0xb8/0x200 [ 29.683027][ T388] ? sock_mmap+0xa0/0xa0 [ 29.687262][ T388] __fput+0x2dc/0x730 [ 29.691243][ T388] ____fput+0x15/0x20 [ 29.695225][ T388] task_work_run+0x127/0x190 [ 29.699809][ T388] exit_to_user_mode_loop+0xcb/0xe0 [ 29.705011][ T388] exit_to_user_mode_prepare+0x76/0xa0 [ 29.710486][ T388] syscall_exit_to_user_mode+0x1d/0x40 [ 29.715945][ T388] do_syscall_64+0x3d/0x40 [ 29.720358][ T388] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 29.726238][ T388] RIP: 0033:0x7fd59916be59 [ 29.730644][ T388] 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 [ 29.750244][ T388] RSP: 002b:00007fffcbe4a738 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 29.758673][ T388] RAX: 0000000000000000 RBX: 00007fffcbe4a820 RCX: 00007fd59916be59 [ 29.766634][ T388] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 29.774591][ T388] RBP: 000000000000735e R08: 0000000000000001 R09: 0000000000000000 [ 29.782554][ T388] R10: 0000001b33e20000 R11: 0000000000000246 R12: 0000000000000000 [ 29.790519][ T388] R13: 00007fd5993e4fac R14: 00007fd5993e4fa8 R15: 00007fd5993e4fa0 [ 29.798506][ T388] [ 29.800831][ T388] Allocated by task 388: [ 29.805071][ T388] __kasan_kmalloc+0xd4/0x100 [ 29.809739][ T388] __kmalloc+0x19f/0x330 [ 29.813974][ T388] l2tp_session_create+0x39/0xb60 [ 29.818994][ T388] pppol2tp_connect+0xbf5/0x1640 [ 29.823933][ T388] __sys_connect+0x3ce/0x450 [ 29.828510][ T388] __x64_sys_connect+0x7a/0x90 [ 29.833260][ T388] do_syscall_64+0x31/0x40 [ 29.837669][ T388] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 29.843545][ T388] [ 29.845867][ T388] Freed by task 49: [ 29.849671][ T388] kasan_set_track+0x4a/0x70 [ 29.854252][ T388] kasan_set_free_info+0x23/0x40 [ 29.859192][ T388] ____kasan_slab_free+0x125/0x160 [ 29.864295][ T388] __kasan_slab_free+0x11/0x20 [ 29.869059][ T388] slab_free_freelist_hook+0xc5/0x190 [ 29.874436][ T388] kfree+0xc0/0x270 [ 29.878245][ T388] l2tp_session_put+0xb2/0x1a0 [ 29.883003][ T388] l2tp_session_delete+0x3a9/0x4a0 [ 29.888130][ T388] l2tp_tunnel_del_work+0x180/0x3d0 [ 29.893324][ T388] process_one_work+0x6fd/0xbc0 [ 29.898186][ T388] worker_thread+0xa8e/0x13c0 [ 29.902855][ T388] kthread+0x324/0x3b0 [ 29.906921][ T388] ret_from_fork+0x1f/0x30 [ 29.911584][ T388] [ 29.913913][ T388] The buggy address belongs to the object at ffff888111763c00 [ 29.913913][ T388] which belongs to the cache kmalloc-512 of size 512 [ 29.927961][ T388] The buggy address is located 0 bytes inside of [ 29.927961][ T388] 512-byte region [ffff888111763c00, ffff888111763e00) [ 29.941046][ T388] The buggy address belongs to the page: [ 29.946690][ T388] page:ffffea000445d800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x111760 [ 29.956913][ T388] head:ffffea000445d800 order:2 compound_mapcount:0 compound_pincount:0 [ 29.965246][ T388] flags: 0x4000000000010200(slab|head) [ 29.970716][ T388] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 29.979310][ T388] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 29.987906][ T388] page dumped because: kasan: bad access detected [ 29.994323][ T388] page_owner tracks the page as allocated [ 30.000074][ T388] page last allocated via order 2, migratetype Unmovable, gfp_mask 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 383, ts 29565110490, free_ts 29497015317 [ 30.018496][ T388] prep_new_page+0x176/0x190 [ 30.023106][ T388] get_page_from_freelist+0x225f/0x23f0 [ 30.028658][ T388] __alloc_pages_nodemask+0x29a/0x640 [ 30.034040][ T388] new_slab+0x84/0x3f0 [ 30.038113][ T388] ___slab_alloc+0x2f8/0x4c0 [ 30.042713][ T388] __slab_alloc+0x63/0xa0 [ 30.047047][ T388] __kmalloc+0x1f9/0x330 [ 30.051295][ T388] ___neigh_create+0x6ec/0x1a70 [ 30.056162][ T388] __neigh_create+0x31/0x40 [ 30.060670][ T388] ip6_finish_output2+0x8fe/0x1540 [ 30.065797][ T388] __ip6_finish_output+0x5fd/0x790 [ 30.070916][ T388] ip6_finish_output+0x33/0x1e0 [ 30.075769][ T388] ip6_output+0x1fa/0x420 [ 30.080109][ T388] mld_sendpack+0x61e/0xb00 [ 30.084619][ T388] mld_ifc_timer_expire+0x862/0xc60 [ 30.089828][ T388] call_timer_fn+0x38/0x290 [ 30.094333][ T388] page last free stack trace: [ 30.099020][ T388] __free_pages_ok+0x80b/0x830 [ 30.103816][ T388] __free_pages+0xd8/0x390 [ 30.108243][ T388] __free_slab+0xcf/0x190 [ 30.112575][ T388] unfreeze_partials+0x150/0x180 [ 30.117511][ T388] put_cpu_partial+0xc1/0x180 [ 30.122192][ T388] __slab_free+0x2c9/0x3a0 [ 30.126609][ T388] ___cache_free+0x10e/0x130 [ 30.131200][ T388] qlink_free+0x50/0x90 [ 30.135361][ T388] qlist_free_all+0x5f/0xb0 [ 30.139875][ T388] kasan_quarantine_reduce+0x14a/0x160 [ 30.145336][ T388] __kasan_slab_alloc+0x2f/0xe0 [ 30.150197][ T388] slab_post_alloc_hook+0x5d/0x2f0 [ 30.155316][ T388] __kmalloc+0x17b/0x330 [ 30.159564][ T388] fib6_info_alloc+0x34/0xe0 [ 30.164155][ T388] ip6_route_info_create+0x4c7/0x1450 [ 30.169536][ T388] ip6_route_add+0x27/0x130 [ 30.174038][ T388] [ 30.176374][ T388] Memory state around the buggy address: [ 30.182014][ T388] ffff888111763b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.190080][ T388] ffff888111763b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.198169][ T388] >ffff888111763c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.206232][ T388] ^ [ 30.210301][ T388] ffff888111763c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.218367][ T388] ffff888111763d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.226436][ T388] ================================================================== [ 30.234498][ T388] Disabling lock debugging due to kernel taint [ 30.242468][ T388] ------------[ cut here ]------------ [ 30.248036][ T388] WARNING: CPU: 0 PID: 388 at net/l2tp/l2tp_ppp.c:156 pppol2tp_sock_to_session+0x167/0x1b0 [ 30.258690][ T388] Modules linked in: [ 30.262810][ T388] CPU: 0 PID: 388 Comm: syz.2.17 Tainted: G B syzkaller #0 [ 30.271450][ T388] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 30.281642][ T388] RIP: 0010:pppol2tp_sock_to_session+0x167/0x1b0 [ 30.288098][ T388] Code: 5d c3 e8 fc 0b 36 fd be 02 00 00 00 eb 0a e8 f0 0b 36 fd be 01 00 00 00 4c 89 f7 e8 a3 76 0f fe e9 0f ff ff ff e8 d9 0b 36 fd <0f> 0b 48 89 df e8 ef 00 00 00 eb bd e8 c8 0b 36 fd 4c 89 f7 be 03 [ 30.308162][ T388] RSP: 0018:ffffc90000ed7d68 EFLAGS: 00010293 [ 30.314667][ T388] RAX: ffffffff842e9627 RBX: ffff8881117b9800 RCX: ffff888110db3b40 [ 30.322728][ T388] RDX: 0000000000000000 RSI: 000000000ad98f80 RDI: 000000000c04eb7d [ 30.330776][ T388] RBP: ffffc90000ed7d88 R08: 0000000000000003 R09: 0000000000000004 [ 30.338922][ T388] R10: dffffc0000000000 R11: fffffbfff0dcf648 R12: dffffc0000000000 [ 30.346953][ T388] R13: dffffc0000000000 R14: 000000000ad98f80 R15: ffff888111763c00 [ 30.354982][ T388] FS: 00005555587e1500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 30.363961][ T388] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.370600][ T388] CR2: 0000000000000000 CR3: 0000000111865000 CR4: 00000000003506a0 [ 30.378861][ T388] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.387049][ T388] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.395205][ T388] Call Trace: [ 30.398552][ T388] pppol2tp_release+0x150/0x2b0 [ 30.403423][ T388] sock_close+0xb8/0x200 [ 30.407764][ T388] ? sock_mmap+0xa0/0xa0 [ 30.412046][ T388] __fput+0x2dc/0x730 [ 30.416291][ T388] ____fput+0x15/0x20 [ 30.420328][ T388] task_work_run+0x127/0x190 [ 30.424993][ T388] exit_to_user_mode_loop+0xcb/0xe0 [ 30.430256][ T388] exit_to_user_mode_prepare+0x76/0xa0 [ 30.435906][ T388] syscall_exit_to_user_mode+0x1d/0x40 [ 30.441428][ T388] do_syscall_64+0x3d/0x40 [ 30.445931][ T388] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 30.451865][ T388] RIP: 0033:0x7fd59916be59 [ 30.462133][ T388] 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 [ 30.481963][ T388] RSP: 002b:00007fffcbe4a738 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 30.490596][ T388] RAX: 0000000000000000 RBX: 00007fffcbe4a820 RCX: 00007fd59916be59 [ 30.498669][ T388] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 30.507055][ T388] RBP: 000000000000735e R08: 0000000000000001 R09: 0000000000000000 [ 30.515103][ T388] R10: 0000001b33e20000 R11: 0000000000000246 R12: 0000000000000000 [ 30.523272][ T388] R13: 00007fd5993e4fac R14: 00007fd5993e4fa8 R15: 00007fd5993e4fa0 [ 30.531337][ T388] ---[ end trace ef61db65afd29449 ]--- [ 30.596659][ T9] device bridge_slave_1 left promiscuous mode [ 30.602839][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 30.610679][ T9] device bridge_slave_0 left promiscuous mode [ 30.617413][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 30.625769][ T9] device veth1_macvtap left promiscuous mode [ 30.631802][ T9] device veth0_vlan left promiscuous mode