IPVS: ip_vs_svc_hash(): request for already hashed, called from do_ip_vs_set_ctl+0x1b5d/0x1da0 net/netfilter/ipvs/ip_vs_ctl.c:2433 IPVS: ip_vs_svc_hash(): request for already hashed, called from do_ip_vs_set_ctl+0x1b5d/0x1da0 net/netfilter/ipvs/ip_vs_ctl.c:2433 ================================================================== BUG: KASAN: slab-out-of-bounds in __hlist_del include/linux/list.h:704 [inline] BUG: KASAN: slab-out-of-bounds in hlist_del_init include/linux/list.h:717 [inline] BUG: KASAN: slab-out-of-bounds in __xfrm_policy_unlink+0x9a4/0xa00 net/xfrm/xfrm_policy.c:2213 Write of size 8 at addr ffff8880a473e830 by task kworker/u4:9/3460 CPU: 1 PID: 3460 Comm: kworker/u4:9 Not tainted 4.20.0+ #3 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:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report mm/kasan/report.c:412 [inline] kasan_report.cold+0x8c/0x2ba mm/kasan/report.c:396 __asan_report_store8_noabort+0x17/0x20 mm/kasan/report.c:438 __hlist_del include/linux/list.h:704 [inline] hlist_del_init include/linux/list.h:717 [inline] __xfrm_policy_unlink+0x9a4/0xa00 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 12365: save_stack+0x45/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc mm/kasan/kasan.c:553 [inline] kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:531 __do_kmalloc mm/slab.c:3722 [inline] __kmalloc+0x15d/0x750 mm/slab.c:3731 kmalloc include/linux/slab.h:551 [inline] kzalloc include/linux/slab.h:741 [inline] __register_sysctl_table+0xc7/0xff0 fs/proc/proc_sysctl.c:1306 register_net_sysctl+0x29/0x30 net/sysctl_net.c:120 neigh_sysctl_register+0x3a5/0x730 net/core/neighbour.c:3659 addrconf_sysctl_register+0xbb/0x1e0 net/ipv6/addrconf.c:6790 ipv6_add_dev net/ipv6/addrconf.c:446 [inline] ipv6_add_dev+0xb34/0x12c0 net/ipv6/addrconf.c:366 addrconf_notify+0xa12/0x25f0 net/ipv6/addrconf.c:3452 notifier_call_chain+0x179/0x380 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1739 call_netdevice_notifiers_extack net/core/dev.c:1751 [inline] call_netdevice_notifiers net/core/dev.c:1765 [inline] register_netdevice+0xae0/0x10b0 net/core/dev.c:8658 veth_newlink+0x58d/0xa60 drivers/net/veth.c:1298 __rtnl_newlink+0x1281/0x1a70 net/core/rtnetlink.c:3182 rtnl_newlink+0x69/0xa0 net/core/rtnetlink.c:3240 rtnetlink_rcv_msg+0x481/0xc30 net/core/rtnetlink.c:5125 netlink_rcv_skb+0x17d/0x410 net/netlink/af_netlink.c:2477 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5143 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x574/0x770 net/netlink/af_netlink.c:1336 netlink_sendmsg+0xa05/0xf90 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:631 __sys_sendto+0x387/0x5f0 net/socket.c:1788 __do_sys_sendto net/socket.c:1800 [inline] __se_sys_sendto net/socket.c:1796 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 9862: save_stack+0x45/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] __kasan_slab_free+0x102/0x150 mm/kasan/kasan.c:521 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528 __cache_free mm/slab.c:3498 [inline] kfree+0xcf/0x230 mm/slab.c:3817 __sock_kfree_s net/core/sock.c:2013 [inline] sock_kfree_s+0x29/0x70 net/core/sock.c:2019 af_alg_free_resources+0x71/0x90 crypto/af_alg.c:1033 _aead_recvmsg crypto/algif_aead.c:321 [inline] aead_recvmsg+0x979/0x1b40 crypto/algif_aead.c:334 sock_recvmsg_nosec net/socket.c:794 [inline] sock_recvmsg net/socket.c:801 [inline] sock_recvmsg+0xd0/0x110 net/socket.c:797 sock_read_iter+0x3ba/0x5a0 net/socket.c:878 call_read_iter include/linux/fs.h:1851 [inline] do_iter_readv_writev+0x6f4/0xae0 fs/read_write.c:678 do_iter_read+0x268/0x650 fs/read_write.c:922 vfs_readv+0x175/0x1c0 fs/read_write.c:986 do_readv+0x11a/0x300 fs/read_write.c:1019 __do_sys_readv fs/read_write.c:1106 [inline] __se_sys_readv fs/read_write.c:1103 [inline] __x64_sys_readv+0x75/0xb0 fs/read_write.c:1103 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 ffff8880a473e480 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 944 bytes inside of 1024-byte region [ffff8880a473e480, ffff8880a473e880) The buggy address belongs to the page: page:ffffea000291cf80 count:1 mapcount:0 mapping:ffff88812c3f0ac0 index:0x0 compound_mapcount: 0 flags: 0x1fffc0000010200(slab|head) raw: 01fffc0000010200 ffffea0002441f08 ffffea0002756788 ffff88812c3f0ac0 raw: 0000000000000000 ffff8880a473e000 0000000100000007 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880a473e700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880a473e780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8880a473e800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8880a473e880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880a473e900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 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