WARNING in netlbl_cipsov4

WARNING in netlbl_cipsov4_add
Status: upstream: reported C repro on 2021/02/20 07:05
Reported-by: syzbot+cdd51ee2e6b0b2e18c0d@syzkaller.appspotmail.com
Fix commit: net: cipso: fix warnings in netlbl_cipsov4_add_std
Patched on: [ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce], missing on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-qemu2-riscv64 ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386 ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb]
First crash: 163d, last: 6h55m

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in netlbl_cipsov4_add (log)
Repro: C syz .config

Patch testing requests:
Created	Duration	User	Patch	Repo	Result
2021/07/09 21:24	16m	paskripkin@gmail.com	patch	git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git v5.13-rc7	OK
2021/07/09 17:46	18m	paskripkin@gmail.com	patch	upstream	error

Sample crash report:

------------[ cut here ]------------
WARNING: CPU: 1 PID: 8434 at mm/page_alloc.c:5175 current_gfp_context include/linux/sched/mm.h:166 [inline]
WARNING: CPU: 1 PID: 8434 at mm/page_alloc.c:5175 __alloc_pages+0x437/0x500 mm/page_alloc.c:5187
Modules linked in:
CPU: 1 PID: 8434 Comm: syz-executor882 Not tainted 5.13.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__alloc_pages+0x437/0x500 mm/page_alloc.c:5175
Code: 89 ef 89 6c 24 48 c6 44 24 78 00 4c 89 74 24 60 e8 9e da ff ff 49 89 c5 e9 94 fd ff ff 0f 0b e9 c9 fd ff ff 40 80 e5 3f eb be <0f> 0b e9 41 ff ff ff 4c 89 ef 44 89 e6 45 31 ed e8 f4 81 ff ff e9
RSP: 0018:ffffc900016bf3c8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff920002d7e7a RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000014 RDI: 0000000000040dc0
RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000
R10: ffffffff81b6bea1 R11: 0000000000000000 R12: ffffffff9078c8e0
R13: 0000000000000014 R14: 0000000000000000 R15: ffff888145537d00
FS:  0000000001f61300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000030c CR3: 000000002cc90000 CR4: 0000000000350ee0
Call Trace:
 alloc_pages+0x18c/0x2a0 mm/mempolicy.c:2272
 kmalloc_order+0x34/0xf0 mm/slab_common.c:924
 kmalloc_order_trace+0x14/0x130 mm/slab_common.c:940
 kmalloc_array include/linux/slab.h:596 [inline]
 kcalloc include/linux/slab.h:625 [inline]
 netlbl_cipsov4_add_std net/netlabel/netlabel_cipso_v4.c:188 [inline]
 netlbl_cipsov4_add+0x5a9/0x23e0 net/netlabel/netlabel_cipso_v4.c:416
 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:739
 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]
 genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:800
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811
 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1929
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:674
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x43fb09
Code: 28 c3 e8 5a 14 00 00 66 2e 0f 1f 84 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffeeafe3bc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 000000000043fb09
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 0000000000403570 R08: 0000000000000002 R09: 00000000004004a0
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000403600
R13: 0000000000000000 R14: 00000000004ad018 R15: 00000000004004a0

Crashes (3739):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kasan-gce-root	2021/06/06 04:55	upstream	e5220dd16778	500c2339	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-smack-root	2021/06/06 04:10	upstream	e5220dd16778	500c2339	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/06/06 06:28	net	3822d0670c9d	500c2339	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/06/06 06:07	net	3822d0670c9d	500c2339	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/06/06 05:48	net	3822d0670c9d	500c2339	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/06/06 05:26	net	3822d0670c9d	500c2339	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/03/31 04:00	net	6e5a03bcba44	6a81331a	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/02/21 08:17	net	3af409ca278d	3e5ed8b4	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/02/16 07:18	net	4773acf3d4b5	98682e5e	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/06/06 06:44	net-next	1a42624aecba	500c2339	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/06/06 06:20	net-next	1a42624aecba	500c2339	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/06/06 06:00	net-next	1a42624aecba	500c2339	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/06/06 05:40	net-next	1a42624aecba	500c2339	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/03/31 06:09	net-next	37f368d8d09d	6a81331a	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/21 08:20	net-next	38b5133ad607	3e5ed8b4	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/16 07:42	net-next	d2a04370817f	98682e5e	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-linux-next-kasan-gce-root	2021/06/06 03:41	linux-next	a1f92694393a	500c2339	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-root	2021/07/29 04:55	upstream	4010a528219e	9a4781d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-root	2021/07/27 19:53	upstream	ff1176468d36	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-smack-root	2021/07/27 16:34	upstream	ff1176468d36	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-smack-root	2021/07/27 12:08	upstream	ff1176468d36	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-root	2021/07/27 07:28	upstream	ff1176468d36	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-smack-root	2021/07/26 18:04	upstream	ff1176468d36	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-smack-root	2021/07/26 01:07	upstream	d8079fac1681	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-root	2021/07/25 22:16	upstream	d8079fac1681	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-root	2021/07/25 04:28	upstream	6498f6151825	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-smack-root	2021/07/24 23:59	upstream	f0fddcec6b62	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-smack-root	2021/07/24 06:21	upstream	8baef6386baa	bc5f1d88	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-smack-root	2021/07/23 17:39	upstream	9bead1b58c4c	bc5f1d88	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-smack-root	2021/07/23 11:13	upstream	9bead1b58c4c	bc5f1d88	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-qemu2-arm64	2021/07/21 09:51	upstream	8cae8cd89f05	1b201b48	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-qemu-upstream-386	2021/07/16 08:37	upstream	dd9c7df94c1b	f115ae98	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-qemu2-arm64-compat	2021/05/19 13:51	upstream	8ac91e6c6033	a343ba6b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-qemu2-arm64-mte	2021/03/23 06:49	upstream	0d02ec6b3136	8092f30d	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/07/29 00:47	net	89fb62fde3b2	9a4781d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/07/28 14:18	net	5e7b30d24a5b	17d6ab15	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/07/27 10:47	net	92766c4628ea	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/07/26 14:56	net	832df96d5f95	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/07/26 12:23	net	832df96d5f95	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/07/26 11:06	net	832df96d5f95	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/07/26 09:48	net	832df96d5f95	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/07/25 20:10	net	89bc7f456cd4	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/07/25 16:33	net	89bc7f456cd4	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/07/25 03:12	net	89bc7f456cd4	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/07/24 21:28	net	5aa1959d1800	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/07/24 04:59	net	d72e91efcae1	bc5f1d88	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/07/24 03:46	net	d72e91efcae1	bc5f1d88	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/07/24 02:41	net	d72e91efcae1	bc5f1d88	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/07/23 16:22	net	9f42f674a892	bc5f1d88	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/07/23 15:04	net	9f42f674a892	bc5f1d88	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/02/16 07:03	net	4773acf3d4b5	98682e5e	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/28 08:17	net-next	409f386b8e5d	17d6ab15	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/28 06:51	net-next	409f386b8e5d	17d6ab15	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/27 22:29	net-next	409f386b8e5d	17d6ab15	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/27 14:43	net-next	268ca4129d8d	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/27 09:22	net-next	268ca4129d8d	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/27 07:28	net-next	268ca4129d8d	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/27 06:17	net-next	268ca4129d8d	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/26 21:26	net-next	9d32e4e7e9e1	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/26 07:33	net-next	cc19862ffe45	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/26 04:56	net-next	cc19862ffe45	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/25 23:23	net-next	cc19862ffe45	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/25 14:14	net-next	c5381154393d	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/25 12:41	net-next	c5381154393d	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/25 10:39	net-next	c5381154393d	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/25 01:59	net-next	facfbf4f0b5a	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/24 19:40	net-next	facfbf4f0b5a	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/24 16:06	net-next	facfbf4f0b5a	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/23 22:05	net-next	4431531c482a	bc5f1d88	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/23 05:53	net-next	4431531c482a	bc5f1d88	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/07/23 03:50	net-next	4431531c482a	bc5f1d88	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-linux-next-kasan-gce-root	2021/07/28 00:29	linux-next	42d0b5f52c9b	17d6ab15	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-linux-next-kasan-gce-root	2021/07/27 04:12	linux-next	2265c5286967	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-linux-next-kasan-gce-root	2021/07/27 02:56	linux-next	2265c5286967	fd511809	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-linux-next-kasan-gce-root	2021/07/25 22:07	linux-next	90d856e71443	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-linux-next-kasan-gce-root	2021/07/25 05:52	linux-next	90d856e71443	4d1b57d4	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-linux-next-kasan-gce-root	2021/07/24 03:54	linux-next	90d856e71443	bc5f1d88	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-linux-next-kasan-gce-root	2021/07/23 16:13	linux-next	90d856e71443	bc5f1d88	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-qemu2-riscv64	2021/06/14 18:49	git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes	18a3c5f7abfd	1ba81399	.config	log	report			info	WARNING in netlbl_cipsov4_add