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: 412d, last: 1d01h

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	21	10d	330d	0/1	upstream: reported C repro on 2020/04/10 21:45
linux-4.14	WARNING in bpf_warn_invalid_xdp_action	C		inconclusive	36	1d16h	330d	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: 1 PID: 143 at net/core/filter.c:7193 bpf_warn_invalid_xdp_action net/core/filter.c:7193 [inline]
WARNING: CPU: 1 PID: 143 at net/core/filter.c:7193 bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:7189
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 143 Comm: kworker/u4:3 Not tainted 5.9.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x198/0x1fd lib/dump_stack.c:118
 panic+0x382/0x7fb kernel/panic.c:231
 __warn.cold+0x20/0x4b kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:bpf_warn_invalid_xdp_action net/core/filter.c:7193 [inline]
RIP: 0010:bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:7189
Code: 40 5c 45 89 41 83 fc 04 48 c7 c6 80 5c 45 89 48 0f 46 ee e8 a3 92 02 fb 44 89 e2 48 c7 c7 c0 5c 45 89 48 89 ee e8 13 d0 d2 fa <0f> 0b 5b 5d 41 5c e9 86 92 02 fb 66 0f 1f 44 00 00 41 57 41 56 49
RSP: 0018:ffffc90000da8a80 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880a8f2e040 RSI: ffffffff815f5985 RDI: fffff520001b5142
RBP: ffffffff89455c40 R08: 0000000000000001 R09: ffff8880ae5318e7
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffea
R13: 0000000000000000 R14: 0000000000000008 R15: ffffc90000da8c70
 netif_receive_generic_xdp+0xe65/0x1790 net/core/dev.c:4692
 do_xdp_generic net/core/dev.c:4740 [inline]
 do_xdp_generic net/core/dev.c:4733 [inline]
 __netif_receive_skb_core+0x11ee/0x36b0 net/core/dev.c:5112
 __netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5284
 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5400
 process_backlog+0x2e1/0x8e0 net/core/dev.c:6242
 napi_poll net/core/dev.c:6688 [inline]
 net_rx_action+0x50d/0xfc0 net/core/dev.c:6758
 __do_softirq+0x1f8/0xb23 kernel/softirq.c:298
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline]
 do_softirq_own_stack+0x9d/0xd0 arch/x86/kernel/irq_64.c:77
 do_softirq kernel/softirq.c:343 [inline]
 do_softirq+0x154/0x1b0 kernel/softirq.c:330
 __local_bh_enable_ip+0x196/0x1f0 kernel/softirq.c:195
 wg_socket_send_skb_to_peer drivers/net/wireguard/socket.c:183 [inline]
 wg_socket_send_buffer_to_peer+0x24f/0x340 drivers/net/wireguard/socket.c:199
 wg_packet_send_handshake_initiation+0x1fc/0x240 drivers/net/wireguard/send.c:40
 wg_packet_handshake_send_worker+0x18/0x30 drivers/net/wireguard/send.c:51
 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
 kthread+0x3b5/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (5365):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
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-kasan-gce-selinux-root	2020/04/01 06:28	upstream	56a451b7	a34e2c33	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/03/31 06:55	upstream	673b41e0	c8d1cc20	.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-linux-next-kasan-gce-root	2020/03/30 23:53	linux-next	770fbb32	c8d1cc20	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2021/03/05 18:28	upstream	280d542f	9d751681	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-kasan-gce-smack-root	2021/03/05 14:33	upstream	280d542f	9d751681	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-kasan-gce-selinux-root	2021/02/22 21:28	upstream	a99163e9	c26fb06b	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-kasan-gce-root	2021/02/16 22:48	upstream	f40ddce8	98682e5e	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-qemu-upstream	2021/01/28 20:35	upstream	e5ff2cb9	7df34f59	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/03/06 02:18	net	ad5d07f4	56722561	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/03/05 14:26	net	ad5d07f4	9d751681	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/03/05 13:04	net	ad5d07f4	9d751681	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/03/04 20:55	net	a9ecb0cb	9d751681	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/03/03 16:48	bpf	6185266c	06ed56cd	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/03/03 14:39	net	95b39f07	e5b64d68	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/03/03 07:31	bpf	6185266c	e5b64d68	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/03/03 01:32	net	95b39f07	e5b64d68	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/03/03 00:00	bpf	6185266c	e5b64d68	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/03/02 16:00	bpf	42a382a4	92ead296	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/03/02 07:06	net	73f476aa	183afb6c	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/03/01 08:59	bpf	557c223b	4c37c133	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/03/01 07:03	bpf	557c223b	4c37c133	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/02/28 11:30	bpf	557c223b	4c37c133	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/02/28 10:13	net	eee7ede6	4c37c133	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/02/28 07:53	net	eee7ede6	4c37c133	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/02/27 20:14	net	eee7ede6	4c37c133	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/02/27 17:36	bpf	557c223b	4c37c133	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/02/27 02:04	bpf	557c223b	4c37c133	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/02/26 05:36	bpf	557c223b	76f7fc95	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/02/24 22:32	net	6fbd15c0	fcc6d71b	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-kasan-gce	2021/02/24 12:49	bpf	53f523f3	fcc6d71b	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/02/24 07:30	net	fcb30073	fcc6d71b	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-this-kasan-gce	2021/02/24 05:51	net	fcb30073	fcc6d71b	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/03/05 11:31	net-next	d310ec03	9d751681	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/03/05 10:23	net-next	d310ec03	9d751681	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-next-kasan-gce	2021/03/05 00:45	bpf-next	86a35af6	9d751681	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/03/04 19:31	net-next	d310ec03	d7e4e604	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/03/03 18:56	net-next	d310ec03	06ed56cd	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-next-kasan-gce	2021/03/02 09:45	bpf-next	85e142cb	183afb6c	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/03/01 21:38	net-next	d310ec03	183afb6c	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/03/01 15:41	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-next-kasan-gce	2021/03/01 13:36	bpf-next	85e142cb	4c37c133	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-next-kasan-gce	2021/03/01 05:52	bpf-next	85e142cb	4c37c133	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/02/28 21:55	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/02/28 14:53	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-next-kasan-gce	2021/02/28 02:10	bpf-next	85e142cb	4c37c133	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/02/27 16:55	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/02/27 09:56	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/02/26 21:52	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/02/26 10:04	net-next	d310ec03	76f7fc95	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/02/26 08:57	net-next	d310ec03	76f7fc95	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-bpf-next-kasan-gce	2021/02/25 14:35	bpf-next	9c8f21e6	76f7fc95	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/02/25 03:21	net-next	d310ec03	fcc6d71b	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/02/24 23:36	net-next	d310ec03	fcc6d71b	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-net-kasan-gce	2021/02/24 08:47	net-next	d310ec03	fcc6d71b	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-upstream-linux-next-kasan-gce-root	2021/01/23 15:57	linux-next	bc085f8f	52e37319	.config	log	report			info	WARNING in bpf_warn_invalid_xdp_action
ci-qemu-upstream-386	2021/01/13 13:10	upstream	e609571b	a945f0a3	.config	log	report			info
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