memory leak in sock_hash_update

memory leak in sock_hash_update_common
Status: upstream: reported syz repro on 2019/05/22 15:58
Reported-by: syzbot+30c7a1fc662026545124@syzkaller.appspotmail.com
First crash: 700d, last: 384d

Sample crash report:

2020/04/02 16:11:29 executed programs: 8
2020/04/02 16:11:36 executed programs: 15
BUG: memory leak
unreferenced object 0xffff888103e2a700 (size 256):
  comm "syz-executor.1", pid 8565, jiffies 4294947873 (age 9.880s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    61 0b a1 38 00 00 00 00 c0 d5 a2 03 81 88 ff ff  a..8............
  backtrace:
    [<00000000b05df744>] kmalloc_node include/linux/slab.h:578 [inline]
    [<00000000b05df744>] sock_hash_alloc_elem net/core/sock_map.c:782 [inline]
    [<00000000b05df744>] sock_hash_update_common+0x31d/0x5c0 net/core/sock_map.c:842
    [<000000006341d2ca>] sock_hash_update_elem+0x1e5/0x210 net/core/sock_map.c:900
    [<00000000811d34af>] bpf_map_update_value.isra.0+0x141/0x2f0 kernel/bpf/syscall.c:169
    [<000000003f37a7c2>] map_update_elem kernel/bpf/syscall.c:1100 [inline]
    [<000000003f37a7c2>] __do_sys_bpf+0x16bf/0x1f00 kernel/bpf/syscall.c:3691
    [<000000004ce14e99>] do_syscall_64+0x6e/0x220 arch/x86/entry/common.c:295
    [<00000000bbbb11f3>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

Crashes (109):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro
ci-upstream-gce-leak	2020/04/02 16:36	upstream	919dce24	a34e2c33	.config	log	report	syz
ci-upstream-gce-leak	2020/03/20 20:31	upstream	6c90b86a	2c31c529	.config	log	report	syz
ci-upstream-gce-leak	2020/03/03 17:40	upstream	63623fd4	c88c7b75	.config	log	report	syz
ci-upstream-gce-leak	2020/02/27 21:18	upstream	f8788d86	59b57593	.config	log	report	syz
ci-upstream-gce-leak	2020/02/25 18:34	upstream	f8788d86	59b57593	.config	log	report	syz
ci-upstream-gce-leak	2020/02/25 17:34	upstream	f8788d86	59b57593	.config	log	report	syz
ci-upstream-gce-leak	2020/02/24 16:44	upstream	d2eee258	d801cb02	.config	log	report	syz
ci-upstream-gce-leak	2020/02/13 13:54	upstream	f2850dd5	84f4fc8a	.config	log	report	syz
ci-upstream-gce-leak	2020/02/10 02:04	upstream	d1ea35f4	35f5e45e	.config	log	report	syz
ci-upstream-gce-leak	2020/02/08 04:42	upstream	41dcd67e	06150bf1	.config	log	report	syz
ci-upstream-gce-leak	2020/02/08 04:28	upstream	41dcd67e	06150bf1	.config	log	report	syz
ci-upstream-gce-leak	2020/02/04 01:39	upstream	754beeec	93e5e335	.config	log	report	syz
ci-upstream-gce-leak	2020/01/31 12:02	upstream	9f68e365	5ed23f9a	.config	log	report	syz
ci-upstream-gce-leak	2020/01/31 10:38	upstream	9f68e365	5ed23f9a	.config	log	report	syz
ci-upstream-gce-leak	2020/01/27 05:58	upstream	a45ea48e	dd56146d	.config	log	report	syz
ci-upstream-gce-leak	2020/01/27 03:06	upstream	a45ea48e	dd56146d	.config	log	report	syz
ci-upstream-gce-leak	2020/01/26 14:49	upstream	2821e26f	f4e7270e	.config	log	report	syz
ci-upstream-gce-leak	2020/01/26 12:11	upstream	2821e26f	f4e7270e	.config	log	report	syz
ci-upstream-gce-leak	2020/01/26 11:34	upstream	2821e26f	f4e7270e	.config	log	report	syz
ci-upstream-gce-leak	2020/01/26 10:27	upstream	2821e26f	f4e7270e	.config	log	report	syz
ci-upstream-gce-leak	2020/01/26 08:00	upstream	2821e26f	f4e7270e	.config	log	report	syz
ci-upstream-gce-leak	2020/01/26 05:51	upstream	2821e26f	f4e7270e	.config	log	report	syz
ci-upstream-gce-leak	2020/01/25 23:05	upstream	d5d359b0	2e95ab33	.config	log	report	syz
ci-upstream-gce-leak	2020/01/25 18:26	upstream	d5d359b0	2e95ab33	.config	log	report	syz
ci-upstream-gce-leak	2020/01/25 00:25	upstream	6381b442	2e95ab33	.config	log	report	syz
ci-upstream-gce-leak	2020/01/24 17:29	upstream	4703d911	2e95ab33	.config	log	report	syz
ci-upstream-gce-leak	2020/01/24 13:55	upstream	4703d911	2e95ab33	.config	log	report	syz
ci-upstream-gce-leak	2020/01/24 10:54	upstream	4703d911	2e95ab33	.config	log	report	syz
ci-upstream-gce-leak	2020/01/24 08:49	upstream	4703d911	2e95ab33	.config	log	report	syz
ci-upstream-gce-leak	2020/01/24 03:51	upstream	4703d911	2e95ab33	.config	log	report	syz
ci-upstream-gce-leak	2020/01/24 03:11	upstream	4703d911	2e95ab33	.config	log	report	syz
ci-upstream-gce-leak	2020/01/23 21:59	upstream	131701c6	3334d684	.config	log	report	syz
ci-upstream-gce-leak	2020/01/23 15:04	upstream	131701c6	3334d684	.config	log	report	syz
ci-upstream-gce-leak	2020/01/23 11:51	upstream	dbab40bd	3334d684	.config	log	report	syz
ci-upstream-gce-leak	2020/01/23 10:11	upstream	dbab40bd	3334d684	.config	log	report	syz
ci-upstream-gce-leak	2020/01/23 08:27	upstream	dbab40bd	3334d684	.config	log	report	syz
ci-upstream-gce-leak	2020/01/23 06:20	upstream	dbab40bd	3334d684	.config	log	report	syz
ci-upstream-gce-leak	2020/01/23 04:49	upstream	dbab40bd	3334d684	.config	log	report	syz
ci-upstream-gce-leak	2020/01/23 04:10	upstream	dbab40bd	3334d684	.config	log	report	syz
ci-upstream-gce-leak	2020/01/23 03:08	upstream	dbab40bd	3334d684	.config	log	report	syz
ci-upstream-gce-leak	2020/01/23 01:38	upstream	dbab40bd	3334d684	.config	log	report	syz
ci-upstream-gce-leak	2020/01/23 01:06	upstream	dbab40bd	3334d684	.config	log	report	syz
ci-upstream-gce-leak	2020/01/23 00:26	upstream	dbab40bd	3334d684	.config	log	report	syz
ci-upstream-gce-leak	2020/01/22 23:45	upstream	dbab40bd	3334d684	.config	log	report	syz
ci-upstream-gce-leak	2020/01/22 21:01	upstream	d96d875e	8eda0b95	.config	log	report	syz
ci-upstream-gce-leak	2020/01/22 19:28	upstream	d96d875e	8eda0b95	.config	log	report	syz
ci-upstream-gce-leak	2020/01/18 21:22	upstream	25e73aad	3de7aabb	.config	log	report	syz
ci-upstream-gce-leak	2020/01/18 12:19	upstream	25e73aad	3de7aabb	.config	log	report	syz
ci-upstream-gce-leak	2020/01/18 10:36	upstream	25e73aad	3de7aabb	.config	log	report	syz
ci-upstream-gce-leak	2019/05/22 12:28	upstream	9c7db500	84b9d384	.config	log	report	syz