WARNING in bpf_warn_invalid_xdp

WARNING in bpf_warn_invalid_xdp_action
Status: upstream: reported C repro on 2020/01/22 16:09
Reported-by: syzbot+8ce4113dadc4789fac74@syzkaller.appspotmail.com
First crash: 517d, last: 6h24m

Cause bisection: introduced by (bisect log) :
commit 58956317c8de52009d1a38a721474c24aef74fe7
Author: David Ahern <dsahern@gmail.com>
Date: Fri Dec 7 20:24:57 2018 +0000

neighbor: Improve garbage collection

Crash: BUG: corrupted list in neigh_mark_dead (log)
Repro: C syz .config

similar bugs (2):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.19	WARNING in bpf_warn_invalid_xdp_action	C		error	64	4d16h	435d	0/1	upstream: reported C repro on 2020/04/10 21:45
linux-4.14	WARNING in bpf_warn_invalid_xdp_action	C		inconclusive	78	13d	435d	0/1	upstream: reported C repro on 2020/04/11 00:08

Sample crash report:

------------[ cut here ]------------
Illegal XDP return value 4294967274, expect packet loss!
WARNING: CPU: 0 PID: 8 at net/core/filter.c:8058 bpf_warn_invalid_xdp_action net/core/filter.c:8058 [inline]
WARNING: CPU: 0 PID: 8 at net/core/filter.c:8058 bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:8054
Modules linked in:
CPU: 0 PID: 8 Comm: kworker/0:2 Not tainted 5.13.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: mld mld_ifc_work
RIP: 0010:bpf_warn_invalid_xdp_action net/core/filter.c:8058 [inline]
RIP: 0010:bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:8054
Code: 00 78 69 8a 41 83 fc 04 48 c7 c6 40 78 69 8a 48 0f 46 ee e8 13 b4 5f fa 44 89 e2 48 c7 c7 80 78 69 8a 48 89 ee e8 44 d7 bf 01 <0f> 0b 5b 5d 41 5c e9 f6 b3 5f fa 66 0f 1f 44 00 00 41 57 41 56 49
RSP: 0018:ffffc900000079b0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801235d4c0 RSI: ffffffff815ce355 RDI: fffff52000000f28
RBP: ffffffff8a697800 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815c81be R11: 0000000000000000 R12: 00000000ffffffea
R13: ffffc90000007a48 R14: 00000000ffffffea R15: ffff888016d4ce76
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000440 CR3: 000000000bc8e000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 veth_xdp_rcv_skb+0x62a/0x1920 drivers/net/veth.c:802
 veth_xdp_rcv+0x3ac/0x810 drivers/net/veth.c:879
 veth_poll+0x134/0x840 drivers/net/veth.c:911
 __napi_poll+0xaf/0x440 net/core/dev.c:6985
 napi_poll net/core/dev.c:7052 [inline]
 net_rx_action+0x801/0xb40 net/core/dev.c:7139
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559
 do_softirq.part.0+0xd9/0x130 kernel/softirq.c:460
 </IRQ>
 do_softirq kernel/softirq.c:452 [inline]
 __local_bh_enable_ip+0x102/0x120 kernel/softirq.c:384
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:746 [inline]
 ip6_finish_output2+0x755/0x1700 net/ipv6/ip6_output.c:118
 __ip6_finish_output net/ipv6/ip6_output.c:182 [inline]
 __ip6_finish_output+0x4c1/0xe10 net/ipv6/ip6_output.c:161
 ip6_finish_output+0x35/0x200 net/ipv6/ip6_output.c:192
 NF_HOOK_COND include/linux/netfilter.h:290 [inline]
 ip6_output+0x1e4/0x530 net/ipv6/ip6_output.c:215
 dst_output include/net/dst.h:448 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 NF_HOOK include/linux/netfilter.h:295 [inline]
 mld_sendpack+0x92a/0xdb0 net/ipv6/mcast.c:1820
 mld_send_cr net/ipv6/mcast.c:2121 [inline]
 mld_ifc_work+0x73b/0xdb0 net/ipv6/mcast.c:2652
 process_one_work+0x98d/0x1600 kernel/workqueue.c:2276
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2422
 kthread+0x3b1/0x4a0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Crashes (5941):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-net-this-kasan-gce	2021/06/05 23:55	net	3822d067	500c2339	.config	log	report	syz	C		WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/03/29 17:56	bpf	861de02e	a8529b82	.config	log	report	syz	C		WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/05 23:46	net-next	1a42624a	500c2339	.config	log	report	syz	C		WARNING in bpf_warn_invalid_xdp_action
ci-upstream-kasan-gce-selinux-root	2020/09/21 17:19	upstream	ba4f184e	9e1fa68e	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/09/20 19:43	upstream	325d0eab	9564d2e9	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2020/09/19 12:26	upstream	eb5f95f1	53ce8104	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/09/11 03:30	upstream	7fe10096	409809d8	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/09/09 09:14	upstream	6f6a73c8	abf9ba4f	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2020/08/17 01:42	upstream	2cc3c4b3	424dd8e7	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/08/15 23:35	upstream	c9c9735c	424dd8e7	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/08/15 13:25	upstream	7fca4dee	424dd8e7	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/05/03 08:02	upstream	f66ed1eb	5457883a	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/05/03 07:03	upstream	f66ed1eb	5457883a	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/05/03 05:59	upstream	f66ed1eb	5457883a	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/05/03 05:20	upstream	f66ed1eb	5457883a	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/05/03 05:09	upstream	f66ed1eb	5457883a	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/05/03 04:40	upstream	f66ed1eb	5457883a	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2020/05/01 16:49	upstream	c45e8bcc	a4d01b80	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2020/05/01 14:56	upstream	c45e8bcc	a4d01b80	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2020/05/01 14:17	upstream	c45e8bcc	a4d01b80	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/04/24 22:23	upstream	b4f63322	03d97a1b	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/04/24 22:12	upstream	b4f63322	03d97a1b	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2020/04/23 12:06	upstream	c578ddb3	2e44d63e	.config	log	report	syz	C
ci-upstream-net-this-kasan-gce	2020/09/09 06:19	net	843d926b	abf9ba4f	.config	log	report	syz	C
ci-upstream-net-this-kasan-gce	2020/08/15 16:13	net	4ca0d9ac	424dd8e7	.config	log	report	syz	C
ci-upstream-net-this-kasan-gce	2020/04/10 22:37	net	40fc7ad2	a8c6a3f8	.config	log	report	syz	C
ci-upstream-net-this-kasan-gce	2020/01/22 08:27	net	d0f41851	8eda0b95	.config	log	report	syz	C
ci-upstream-net-kasan-gce	2020/09/09 06:54	net-next	c1f1f16c	abf9ba4f	.config	log	report	syz	C
ci-upstream-net-kasan-gce	2020/08/15 17:47	net-next	7fca4dee	424dd8e7	.config	log	report	syz	C
ci-upstream-net-kasan-gce	2020/04/10 23:21	net-next	63bef48f	a8c6a3f8	.config	log	report	syz	C
ci-upstream-net-kasan-gce	2020/04/10 22:37	net-next	63bef48f	a8c6a3f8	.config	log	report	syz	C
ci-upstream-net-kasan-gce	2020/01/22 07:43	net-next	4f2c17e0	8eda0b95	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/09/27 14:12	linux-next	d1d2220c	5dd8aee8	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/09/26 23:08	linux-next	d1d2220c	2d5ea0cb	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/08/19 11:02	linux-next	8eb858df	e1c29030	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/05/03 13:24	linux-next	ac935d22	5457883a	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/05/03 10:28	linux-next	ac935d22	5457883a	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/05/03 09:48	linux-next	ac935d22	5457883a	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/04/25 22:02	linux-next	ac935d22	b8bb8e5f	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/04/09 00:21	linux-next	5798bd75	db9bcd4b	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/04/03 08:45	linux-next	770fbb32	a34e2c33	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/04/02 03:04	linux-next	770fbb32	a34e2c33	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2021/06/19 06:32	upstream	b1edae0d	aba2b2fb	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-kasan-gce-smack-root	2021/06/18 07:10	upstream	fd0aa1a4	aba2b2fb	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-kasan-gce-selinux-root	2021/06/10 20:42	upstream	f09eacca	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-kasan-gce-root	2021/06/08 21:30	upstream	4c8684fe	b718257f	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-kasan-gce-root	2021/06/07 14:24	upstream	614124be	e59537be	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-qemu-upstream	2021/05/26 11:13	upstream	ad9f25d3	93d3a9f6	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-qemu-upstream-386	2021/06/16 18:05	upstream	6b00bc63	c06f97ad	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/06/19 19:39	bpf	61e8aeda	aba2b2fb	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/06/19 18:45	bpf	61e8aeda	aba2b2fb	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/06/19 17:35	bpf	61e8aeda	aba2b2fb	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/06/19 03:54	bpf	61e8aeda	aba2b2fb	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/06/19 02:16	bpf	61e8aeda	aba2b2fb	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/06/18 22:57	bpf	61e8aeda	aba2b2fb	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/06/18 11:19	bpf	da5ac772	aba2b2fb	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/06/18 09:53	bpf	da5ac772	aba2b2fb	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/06/17 09:40	bpf	da5ac772	aba2b2fb	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/06/17 00:58	bpf	da5ac772	aba2b2fb	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/06/15 22:13	net	2214fb53	58636922	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/06/15 07:11	net	49a10c7b	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/06/14 13:32	bpf	11fc79fc	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/06/14 01:45	net	f4cdcae0	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/06/13 18:25	bpf	11fc79fc	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/06/12 04:22	bpf	11fc79fc	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/06/11 12:31	net	232e3683	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/06/11 09:56	net	3bdd5ee0	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/06/11 02:04	bpf	11fc79fc	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/06/10 22:47	net	3bdd5ee0	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/06/08 22:41	net	7a6b1ab7	5c2fe346	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/06/08 05:54	net	aaab3076	b718257f	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/18 19:33	net-next	8fe088bd	aba2b2fb	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/16 11:56	net-next	c7654495	c06f97ad	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-next-kasan-gce	2021/06/16 08:49	bpf-next	1f26622b	990d3cbe	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/15 23:15	net-next	925a56b2	990d3cbe	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/15 13:30	net-next	89212e16	58636922	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/15 11:00	net-next	89212e16	58636922	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/15 10:48	net-next	89212e16	58636922	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/15 09:38	net-next	2d7ff2d8	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/15 05:08	net-next	2d7ff2d8	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/14 19:20	net-next	a212d9f3	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/13 19:56	net-next	ffbbc5e5	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/13 08:12	net-next	02b0bb51	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/13 03:23	net-next	02b0bb51	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/12 21:18	net-next	02b0bb51	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/11 17:51	net-next	76cf404c	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/11 11:02	net-next	76cf404c	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/11 08:00	net-next	06990739	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-next-kasan-gce	2021/06/10 08:43	bpf-next	380afe72	1ba81399	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-next-kasan-gce	2021/06/10 01:28	bpf-next	380afe72	84fe5d96	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/09 15:52	net-next	2aa8eca6	84fe5d96	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/06/07 12:09	net-next	1a42624a	e59537be	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-linux-next-kasan-gce-root	2021/06/03 02:04	linux-next	a1f92694	0740de69	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/01/17 13:29	bpf	e23a8d00	813be542	.config	log	report			info
ci-upstream-net-kasan-gce	2020/01/19 13:22	net-next	9aaa2949	bc8bc756	.config	log	report