WARNING in netlbl_cipsov4

WARNING in netlbl_cipsov4_add
Status: fixed on 2021/11/10 00:50
Reported-by: syzbot+cdd51ee2e6b0b2e18c0d@syzkaller.appspotmail.com
Fix commit: 8ca34a13f7f9 net: cipso: fix warnings in netlbl_cipsov4_add_std
First crash: 293d, last: 90d

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: 8400 at mm/page_alloc.c:5365 __alloc_pages+0x588/0x5f0 mm/page_alloc.c:5412
Modules linked in:
CPU: 1 PID: 8400 Comm: syz-executor916 Not tainted 5.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__alloc_pages+0x588/0x5f0 mm/page_alloc.c:5412
Code: 00 48 ba 00 00 00 00 00 fc ff df e9 5e fd ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 6d fd ff ff e8 8d 62 0a 00 e9 63 fd ff ff <0f> 0b 45 31 e4 e9 7a fd ff ff 48 8d 4c 24 50 80 e1 07 80 c1 03 38
RSP: 0018:ffffc90000eef1a0 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000015 RCX: 0000000000000000
RDX: 0000000000000028 RSI: 0000000000000000 RDI: ffffc90000eef228
RBP: ffffc90000eef2b0 R08: dffffc0000000000 R09: ffffc90000eef200
R10: fffff520001dde45 R11: 0000000000000000 R12: 0000000000040dc0
R13: ffffc90000eef200 R14: 1ffff920001dde3c R15: 1ffff920001dde38
FS:  0000000000a29300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faba68276c0 CR3: 0000000021292000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kmalloc_order+0x41/0x170 mm/slab_common.c:955
 kmalloc_order_trace+0x15/0x70 mm/slab_common.c:971
 kmalloc_large include/linux/slab.h:520 [inline]
 __kmalloc+0x292/0x390 mm/slub.c:4104
 kmalloc_array include/linux/slab.h:631 [inline]
 kcalloc+0x2b/0x40 include/linux/slab.h:660
 netlbl_cipsov4_add_std net/netlabel/netlabel_cipso_v4.c:188 [inline]
 netlbl_cipsov4_add+0x1630/0x31a0 net/netlabel/netlabel_cipso_v4.c:416
 genl_family_rcv_msg_doit net/netlink/genetlink.c:739 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]
 genl_rcv_msg+0xfb4/0x13c0 net/netlink/genetlink.c:800
 netlink_rcv_skb+0x1f0/0x460 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+0x7de/0x9b0 net/netlink/af_netlink.c:1340
 netlink_sendmsg+0x9e7/0xe00 net/netlink/af_netlink.c:1929
 sock_sendmsg_nosec net/socket.c:703 [inline]
 sock_sendmsg net/socket.c:723 [inline]
 ____sys_sendmsg+0x5a2/0x900 net/socket.c:2395
 ___sys_sendmsg net/socket.c:2449 [inline]
 __sys_sendmsg+0x319/0x400 net/socket.c:2478
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x43fd49
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:00007ffc90b0ad98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 000000000043fd49
RDX: 0000000000004904 RSI: 0000000020000140 RDI: 0000000000000004
RBP: 00000000004037b0 R08: 0000000000000005 R09: 00000000004004a0
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000403840
R13: 0000000000000000 R14: 00000000004ad018 R15: 00000000004004a0

Crashes (4433):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kasan-gce-smack-root	2021/08/31 21:40	upstream	b91db6a0b52e	7eb7e152	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-root	2021/08/28 09:51	upstream	1a6436f37512	d5a29e53	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-root	2021/08/23 04:47	upstream	1bdc3d5be7e1	b599f2fc	.config	log	report	syz	C		WARNING in netlbl_cipsov4_add
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-smack-root	2021/09/01 17:12	upstream	b91db6a0b52e	7eb7e152	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-root	2021/09/01 16:06	upstream	b91db6a0b52e	7eb7e152	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-smack-root	2021/09/01 14:06	upstream	b91db6a0b52e	7eb7e152	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-root	2021/09/01 11:50	upstream	b91db6a0b52e	7eb7e152	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-kasan-gce-smack-root	2021/09/01 03:57	upstream	b91db6a0b52e	7eb7e152	.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	2021/09/07 14:36	net	57f780f1c433	6ca60148	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/07 11:52	net	57f780f1c433	6ca60148	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/07 05:28	net	57f780f1c433	6ca60148	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/07 04:11	net	57f780f1c433	6ca60148	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/07 02:17	net	57f780f1c433	6ca60148	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/06 18:52	net	57f780f1c433	6ca60148	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/06 13:31	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/06 11:06	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/06 07:16	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/06 04:34	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/06 02:32	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/05 23:16	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/05 20:47	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/05 18:34	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/05 17:16	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/05 15:42	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/05 14:31	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/05 11:38	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/05 08:06	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/05 05:40	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/05 01:17	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/04 20:29	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/04 19:07	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/04 07:53	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/04 06:50	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/04 05:47	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/03 23:40	net	57f780f1c433	d236a457	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/03 19:20	net	57f780f1c433	f62a5829	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/03 01:13	net	57f780f1c433	15cea0a3	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/02 20:42	net	57f780f1c433	15cea0a3	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/02 17:11	net	57f780f1c433	15cea0a3	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/02 14:26	net	57f780f1c433	15cea0a3	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/02 11:24	net	57f780f1c433	7eb7e152	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/02 09:16	net	57f780f1c433	7eb7e152	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/02 00:58	net	57f780f1c433	7eb7e152	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/02 00:44	net	57f780f1c433	7eb7e152	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/01 23:05	net	57f780f1c433	7eb7e152	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/01 20:00	net	57f780f1c433	7eb7e152	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/01 10:45	net	57f780f1c433	7eb7e152	.config	log	report			info	WARNING in netlbl_cipsov4_add
ci-upstream-net-this-kasan-gce	2021/09/01 09:37	net	57f780f1c433	7eb7e152	.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-linux-next-kasan-gce-root	2021/07/28 00:29	linux-next	42d0b5f52c9b	17d6ab15	.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