device bond_slave_1 left promiscuous mode bond0 (unregistering): Releasing backup interface bond_slave_0 device bond_slave_0 left promiscuous mode bond0 (unregistering): Released all slaves ================================================================== BUG: KASAN: use-after-free in __write_once_size include/linux/compiler.h:218 [inline] BUG: KASAN: use-after-free in __hlist_del include/linux/list.h:702 [inline] BUG: KASAN: use-after-free in hlist_del_init include/linux/list.h:717 [inline] BUG: KASAN: use-after-free in __xfrm_policy_unlink+0x977/0xa00 net/xfrm/xfrm_policy.c:2213 Write of size 8 at addr ffff88808c011a68 by task kworker/u4:10/25435 CPU: 0 PID: 25435 Comm: kworker/u4:10 Not tainted 5.0.0-rc2+ #13 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1db/0x2d0 lib/dump_stack.c:113 print_address_description.cold+0x7c/0x20d mm/kasan/report.c:187 kasan_report.cold+0x1b/0x40 mm/kasan/report.c:317 __asan_report_store8_noabort+0x17/0x20 mm/kasan/generic_report.c:140 __write_once_size include/linux/compiler.h:218 [inline] __hlist_del include/linux/list.h:702 [inline] hlist_del_init include/linux/list.h:717 [inline] __xfrm_policy_unlink+0x977/0xa00 net/xfrm/xfrm_policy.c:2213 xfrm_policy_flush+0x331/0x460 net/xfrm/xfrm_policy.c:1789 xfrm_policy_fini+0xbf/0x640 net/xfrm/xfrm_policy.c:3866 xfrm_net_exit+0x1d/0x70 net/xfrm/xfrm_policy.c:3928 ops_exit_list.isra.0+0xb0/0x160 net/core/net_namespace.c:153 cleanup_net+0x51d/0xb10 net/core/net_namespace.c:551 process_one_work+0xd0c/0x1ce0 kernel/workqueue.c:2153 worker_thread+0x143/0x14a0 kernel/workqueue.c:2296 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Allocated by task 22628: save_stack+0x45/0xd0 mm/kasan/common.c:73 set_track mm/kasan/common.c:85 [inline] __kasan_kmalloc mm/kasan/common.c:496 [inline] __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:469 kasan_kmalloc+0x9/0x10 mm/kasan/common.c:504 __do_kmalloc_node mm/slab.c:3673 [inline] __kmalloc_node_track_caller+0x4e/0x70 mm/slab.c:3687 __kmalloc_reserve.isra.0+0x40/0xe0 net/core/skbuff.c:140 __alloc_skb+0x12d/0x730 net/core/skbuff.c:208 alloc_skb include/linux/skbuff.h:1011 [inline] alloc_skb_with_frags+0xef/0x720 net/core/skbuff.c:5283 sock_alloc_send_pskb+0x8c9/0xad0 net/core/sock.c:2116 sock_alloc_send_skb+0x32/0x40 net/core/sock.c:2133 __ip6_append_data.isra.0+0x2556/0x3f20 net/ipv6/ip6_output.c:1443 ip6_make_skb+0x391/0x5f0 net/ipv6/ip6_output.c:1806 udpv6_sendmsg+0x2b56/0x3570 net/ipv6/udp.c:1460 inet_sendmsg+0x1af/0x740 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:631 ___sys_sendmsg+0x409/0x910 net/socket.c:2116 __sys_sendmmsg+0x246/0x730 net/socket.c:2211 __do_sys_sendmmsg net/socket.c:2240 [inline] __se_sys_sendmmsg net/socket.c:2237 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2237 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 22628: save_stack+0x45/0xd0 mm/kasan/common.c:73 set_track mm/kasan/common.c:85 [inline] __kasan_slab_free+0x102/0x150 mm/kasan/common.c:458 kasan_slab_free+0xe/0x10 mm/kasan/common.c:466 __cache_free mm/slab.c:3487 [inline] kfree+0xcf/0x230 mm/slab.c:3806 skb_free_head+0x93/0xb0 net/core/skbuff.c:553 skb_release_data+0x6ea/0x970 net/core/skbuff.c:573 skb_release_all+0x4d/0x60 net/core/skbuff.c:627 __kfree_skb net/core/skbuff.c:641 [inline] kfree_skb net/core/skbuff.c:659 [inline] kfree_skb+0x199/0x580 net/core/skbuff.c:653 vti_tunnel_xmit+0x6fe/0x1920 net/ipv4/ip_vti.c:269 __netdev_start_xmit include/linux/netdevice.h:4384 [inline] netdev_start_xmit include/linux/netdevice.h:4393 [inline] xmit_one net/core/dev.c:3278 [inline] dev_hard_start_xmit+0x261/0xc70 net/core/dev.c:3294 __dev_queue_xmit+0x2f8a/0x3a60 net/core/dev.c:3864 dev_queue_xmit+0x18/0x20 net/core/dev.c:3897 neigh_direct_output+0x16/0x20 net/core/neighbour.c:1516 neigh_output include/net/neighbour.h:508 [inline] ip6_finish_output2+0xc56/0x28e0 net/ipv6/ip6_output.c:120 ip6_finish_output+0x577/0xc30 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip6_output+0x23c/0xa00 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:444 [inline] ip6_local_out+0xc4/0x1b0 net/ipv6/output_core.c:176 ip6_send_skb+0xbb/0x350 net/ipv6/ip6_output.c:1727 udp_v6_send_skb.isra.0+0x834/0x14b0 net/ipv6/udp.c:1169 udpv6_sendmsg+0x2ba8/0x3570 net/ipv6/udp.c:1466 inet_sendmsg+0x1af/0x740 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:631 ___sys_sendmsg+0x409/0x910 net/socket.c:2116 __sys_sendmmsg+0x246/0x730 net/socket.c:2211 __do_sys_sendmmsg net/socket.c:2240 [inline] __se_sys_sendmmsg net/socket.c:2237 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2237 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff88808c0116c0 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 936 bytes inside of 1024-byte region [ffff88808c0116c0, ffff88808c011ac0) The buggy address belongs to the page: page:ffffea0002300400 count:1 mapcount:0 mapping:ffff88812c3f0ac0 index:0xffff88808c010040 compound_mapcount: 0 flags: 0x1fffc0000010200(slab|head) raw: 01fffc0000010200 ffffea000247cf08 ffffea000215a108 ffff88812c3f0ac0 raw: ffff88808c010040 ffff88808c010040 0000000100000002 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88808c011900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88808c011980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88808c011a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88808c011a80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff88808c011b00: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 ==================================================================