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
First crash: 12d, last: 1h08m

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

Sample crash report:

------------[ cut here ]------------
WARNING: CPU: 1 PID: 8405 at mm/page_alloc.c:4979 __alloc_pages_nodemask+0x5f8/0x730 mm/page_alloc.c:5014
Modules linked in:
CPU: 1 PID: 8405 Comm: syz-executor093 Not tainted 5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__alloc_pages_nodemask+0x5f8/0x730 mm/page_alloc.c:4979
Code: 00 00 0c 00 0f 85 a7 00 00 00 8b 3c 24 4c 89 f2 44 89 e6 c6 44 24 70 00 48 89 6c 24 58 e8 d0 d7 ff ff 49 89 c5 e9 ea fc ff ff <0f> 0b e9 b5 fd ff ff 89 74 24 14 4c 89 4c 24 08 4c 89 74 24 18 e8
RSP: 0018:ffffc9000161f3e0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff920002c3e80 RCX: 0000000000000000
RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 0000000000040dc0
RBP: 0000000000040dc0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81b29ac1 R11: 0000000000000000 R12: 0000000000000014
R13: 0000000000000014 R14: 0000000000000000 R15: ffff888018825280
FS:  0000000000577300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000044c CR3: 0000000013293000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 alloc_pages_current+0x18c/0x2a0 mm/mempolicy.c:2267
 alloc_pages include/linux/gfp.h:547 [inline]
 kmalloc_order+0x32/0xd0 mm/slab_common.c:837
 kmalloc_order_trace+0x14/0x130 mm/slab_common.c:853
 kmalloc_array include/linux/slab.h:592 [inline]
 kcalloc include/linux/slab.h:621 [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:2494
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811
 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:672
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2345
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2399
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2432
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x43fbb9
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:00007ffe8bff94e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 000000000043fbb9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003
RBP: 0000000000403620 R08: 0000000000000008 R09: 00000000004004a0
R10: 0000000000000005 R11: 0000000000000246 R12: 00000000004036b0
R13: 0000000000000000 R14: 00000000004ad018 R15: 00000000004004a0

Crashes (168):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-net-this-kasan-gce	2021/02/21 08:17	net	3af409ca	3e5ed8b4	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/02/16 07:18	net	4773acf3	98682e5e	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/21 08:20	net-next	38b5133a	3e5ed8b4	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/16 07:42	net-next	d2a04370	98682e5e	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-smack-root	2021/02/24 02:34	upstream	3b9cdafb	fcc6d71b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-smack-root	2021/02/23 09:18	upstream	a99163e9	c26fb06b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-smack-root	2021/02/23 08:16	upstream	a99163e9	c26fb06b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-root	2021/02/23 01:11	upstream	a99163e9	c26fb06b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-qemu-upstream-386	2021/02/28 18:56	upstream	5695e516	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-qemu-upstream-386	2021/02/20 04:15	upstream	f40ddce8	f689d40a	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-qemu2-arm64-mte	2021/02/16 07:36	upstream	f40ddce8	98682e5e	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/02/28 21:11	net	eee7ede6	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/02/28 16:32	net	eee7ede6	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/02/28 06:25	net	eee7ede6	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/02/25 21:53	net	8f1c0fd2	76f7fc95	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/02/24 19:50	net	fcb30073	fcc6d71b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/02/24 14:43	net	fcb30073	fcc6d71b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/02/24 11:01	net	fcb30073	fcc6d71b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/02/24 06:08	net	fcb30073	fcc6d71b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/02/23 19:33	net	42870a1a	fcc6d71b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/02/22 21:51	net	3a2eb515	c26fb06b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/02/22 12:19	net	d310ec03	a659b3f1	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/02/16 07:03	net	4773acf3	98682e5e	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/28 15:54	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/28 08:31	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/28 03:09	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/28 01:28	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/28 00:23	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/27 19:53	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/27 18:51	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/27 16:11	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/27 13:37	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/27 12:04	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/27 07:44	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/27 02:50	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/26 16:46	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/26 15:42	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/26 02:39	net-next	d310ec03	76f7fc95	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/26 01:18	net-next	d310ec03	76f7fc95	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/25 19:59	net-next	d310ec03	76f7fc95	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/25 12:59	net-next	d310ec03	fcc6d71b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/25 02:14	net-next	d310ec03	fcc6d71b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/25 00:03	net-next	d310ec03	fcc6d71b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/24 21:13	net-next	d310ec03	fcc6d71b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/24 13:02	net-next	d310ec03	fcc6d71b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/24 03:58	net-next	d310ec03	fcc6d71b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/24 01:05	net-next	d310ec03	fcc6d71b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/23 22:47	net-next	d310ec03	fcc6d71b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/23 21:34	net-next	d310ec03	fcc6d71b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/23 12:53	net-next	d310ec03	c26fb06b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/23 07:14	net-next	d310ec03	c26fb06b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/23 05:06	net-next	d310ec03	c26fb06b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/22 19:19	net-next	d310ec03	c26fb06b	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-kasan-gce	2021/02/22 14:44	net-next	d310ec03	a659b3f1	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-linux-next-kasan-gce-root	2021/02/28 17:54	linux-next	d01f2f7e	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-linux-next-kasan-gce-root	2021/02/27 10:35	linux-next	d01f2f7e	4c37c133	.config	log	report			info	WARNING in netlbl_cipsov4_add