WARNING: suspicious RCU usage in bond_ipsec_add

WARNING: suspicious RCU usage in bond_ipsec_add_sa (2)
Status: upstream: reported C repro on 2020/09/21 09:51
Reported-by: syzbot+11dcfe6879155fbb6a4e@syzkaller.appspotmail.com
First crash: 315d, last: 27d

Cause bisection: introduced by (bisect log) :
commit a3b658cfb66497525278cbf852913a04dbaae992
Author: Jarod Wilson <jarod@redhat.com>
Date: Tue Jun 30 18:49:41 2020 +0000

bonding: allow xfrm offload setup post-module-load

Crash: WARNING: suspicious RCU usage in bond_ipsec_add_sa (log)
Repro: C syz .config

similar bugs (1):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	WARNING: suspicious RCU usage in bond_ipsec_add_sa				214	319d	390d	17/22	fixed on 2020/09/16 22:51

Sample crash report:

netlink: 'syz-executor076': attribute type 1 has an invalid length.
8021q: adding VLAN 0 to HW filter on device bond1
=============================
WARNING: suspicious RCU usage
5.12.0-syzkaller #0 Not tainted
-----------------------------
drivers/net/bonding/bond_main.c:411 suspicious rcu_dereference_check() usage!

other info that might help us debug this:


rcu_scheduler_active = 2, debug_locks = 1
1 lock held by syz-executor076/8371:
 #0: ffffffff8d6666e0 (&net->xfrm.xfrm_cfg_mutex){+.+.}-{3:3}, at: xfrm_netlink_rcv+0x5c/0x90 net/xfrm/xfrm_user.c:2823

stack backtrace:
CPU: 0 PID: 8371 Comm: syz-executor076 Not tainted 5.12.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x141/0x1d7 lib/dump_stack.c:120
 bond_ipsec_add_sa+0x1dc/0x240 drivers/net/bonding/bond_main.c:411
 xfrm_dev_state_add+0x2da/0x7b0 net/xfrm/xfrm_device.c:266
 xfrm_state_construct net/xfrm/xfrm_user.c:655 [inline]
 xfrm_add_sa+0x229e/0x35f0 net/xfrm/xfrm_user.c:684
 xfrm_user_rcv_msg+0x42c/0x8b0 net/xfrm/xfrm_user.c:2812
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502
 xfrm_netlink_rcv+0x6b/0x90 net/xfrm/xfrm_user.c:2824
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927
 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: 0033:0x43f0b9
Code: 28 c3 e8 2a 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:00007ffc98392028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f0b9
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000004
RBP: 00000000004030a0 R08: 0000000000400488 R09: 0000000000400488
R10: 0000000000400488 R11: 0000000000000246 R12: 0000000000403130
R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 8371 Comm: syz-executor076 Not tainted 5.12.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:bond_ipsec_add_sa+0x9e/0x240 drivers/net/bonding/bond_main.c:412
Code: 04 31 ff 89 c3 89 c6 e8 60 2d cb fc 85 db 0f 85 f6 00 00 00 e8 03 27 cb fc 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 5f 01 00 00 48 8d bd d0 02 00 00 49 8b 5d 00 48
RSP: 0018:ffffc90001b17490 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff84a7f5bd RDI: 0000000000000003
RBP: ffff8880289b6b80 R08: 0000000000000000 R09: ffffffff9019996f
R10: ffffffff88d38f58 R11: 0000000000000000 R12: ffff88801f87c000
R13: 0000000000000000 R14: ffff8880289b6e60 R15: ffff8880289b6e64
FS:  0000000001def300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8aa40420f8 CR3: 0000000015a93000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 xfrm_dev_state_add+0x2da/0x7b0 net/xfrm/xfrm_device.c:266
 xfrm_state_construct net/xfrm/xfrm_user.c:655 [inline]
 xfrm_add_sa+0x229e/0x35f0 net/xfrm/xfrm_user.c:684
 xfrm_user_rcv_msg+0x42c/0x8b0 net/xfrm/xfrm_user.c:2812
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502
 xfrm_netlink_rcv+0x6b/0x90 net/xfrm/xfrm_user.c:2824
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927
 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: 0033:0x43f0b9
Code: 28 c3 e8 2a 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:00007ffc98392028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f0b9
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000004
RBP: 00000000004030a0 R08: 0000000000400488 R09: 0000000000400488
R10: 0000000000400488 R11: 0000000000000246 R12: 0000000000403130
R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488
Modules linked in:
---[ end trace 09352077ec7e6a51 ]---
RIP: 0010:bond_ipsec_add_sa+0x9e/0x240 drivers/net/bonding/bond_main.c:412
Code: 04 31 ff 89 c3 89 c6 e8 60 2d cb fc 85 db 0f 85 f6 00 00 00 e8 03 27 cb fc 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 5f 01 00 00 48 8d bd d0 02 00 00 49 8b 5d 00 48
RSP: 0018:ffffc90001b17490 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff84a7f5bd RDI: 0000000000000003
RBP: ffff8880289b6b80 R08: 0000000000000000 R09: ffffffff9019996f
R10: ffffffff88d38f58 R11: 0000000000000000 R12: ffff88801f87c000
R13: 0000000000000000 R14: ffff8880289b6e60 R15: ffff8880289b6e64
FS:  0000000001def300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8aa40420f8 CR3: 0000000015a93000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (540):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kasan-gce-selinux-root	2021/04/28 13:25	upstream	57fa2369ab17	805b5003	.config	log	report	syz	C		WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-kasan-gce-smack-root	2021/03/30 08:44	upstream	1e43c377a79f	6a81331a	.config	log	report	syz	C		WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-kasan-gce-root	2021/03/29 08:09	upstream	81b1d39fd39a	a8529b82	.config	log	report	syz	C		WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-linux-next-kasan-gce-root	2021/05/05 09:32	linux-next	9a9aa07ae18b	06c27ff5	.config	log	report	syz	C		WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-kasan-gce	2020/12/09 03:31	upstream	7d8761ba27fc	a7f7f4a4	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2020/11/06 23:01	upstream	521b619acdc8	64069d48	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/11/06 02:47	upstream	521b619acdc8	64069d48	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/11/06 02:27	upstream	521b619acdc8	64069d48	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/10/03 12:42	upstream	d3d45f8220d6	2653fa43	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/10/03 12:12	upstream	d3d45f8220d6	2653fa43	.config	log	report	syz	C
ci-upstream-kasan-gce	2020/09/24 00:26	upstream	805c6d3c1921	287cd75a	.config	log	report	syz	C
ci-upstream-kasan-gce	2020/09/23 23:35	upstream	805c6d3c1921	287cd75a	.config	log	report	syz	C
ci-upstream-net-this-kasan-gce	2020/10/31 08:44	net	2b94f5266c84	18e33098	.config	log	report	syz	C
ci-upstream-net-this-kasan-gce	2020/09/20 19:04	net	f13d783a184e	9564d2e9	.config	log	report	syz	C
ci-upstream-net-this-kasan-gce	2020/09/20 18:07	net	f13d783a184e	9564d2e9	.config	log	report	syz	C
ci-upstream-net-kasan-gce	2020/10/31 06:59	net-next	1fb74191988f	18e33098	.config	log	report	syz	C
ci-upstream-net-kasan-gce	2020/09/20 19:03	net-next	dd92f1798981	9564d2e9	.config	log	report	syz	C
ci-upstream-net-kasan-gce	2020/09/20 18:08	net-next	dd92f1798981	9564d2e9	.config	log	report	syz	C
ci-upstream-kasan-gce	2021/05/19 15:57	upstream	8ac91e6c6033	a343ba6b	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-this-kasan-gce	2021/07/05 06:16	net	dbe69e433722	55aa55c2	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-this-kasan-gce	2021/07/03 20:42	net	dbe69e433722	55aa55c2	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-this-kasan-gce	2021/05/27 02:09	net	62f3415db237	858ea628	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/06/28 14:16	net-next	ff8744b5eb11	9d2ab5df	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/06/22 14:46	net-next	ef2c3ddaa4ed	aba2b2fb	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/06/21 14:54	net-next	adc2e56ebe63	aba2b2fb	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/06/19 19:33	net-next	adc2e56ebe63	aba2b2fb	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/06/10 17:51	net-next	0d155170d6ee	1ba81399	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/06/05 15:43	net-next	1a42624aecba	500c2339	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/05/28 19:32	net-next	af9207adb6d9	858ea628	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/05/21 16:13	net-next	86fe2f8aa14f	3c7fef33	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/05/04 18:28	net-next	95aafe911db6	09efdd63	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/05/04 15:39	net-next	95aafe911db6	09efdd63	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/05/03 01:19	net-next	95aafe911db6	77e2b668	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/05/01 23:32	net-next	95aafe911db6	77e2b668	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/30 00:24	net-next	95aafe911db6	77e2b668	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/29 19:18	net-next	95aafe911db6	77e2b668	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/29 14:08	net-next	95aafe911db6	77e2b668	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/12 12:30	net-next	5b489fea977c	bfeda1b1	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/12 00:24	net-next	cbd312539284	bfeda1b1	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/11 12:27	net-next	cbd312539284	bfeda1b1	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/11 08:25	net-next	cbd312539284	bfeda1b1	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/10 23:33	net-next	626b598aa8be	bfeda1b1	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/10 18:57	net-next	626b598aa8be	bfeda1b1	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/09 20:39	net-next	4438669eb703	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/09 19:16	net-next	4438669eb703	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/09 13:59	net-next	4438669eb703	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/09 05:26	net-next	4438669eb703	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/08 22:11	net-next	3cd52c1e32fe	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/08 09:38	net-next	0b35e0deb5be	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/08 02:25	net-next	0b35e0deb5be	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/07 23:19	net-next	0b35e0deb5be	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/07 17:34	net-next	be107538c529	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/07 14:43	net-next	be107538c529	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/07 14:23	net-next	be107538c529	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/07 08:48	net-next	be107538c529	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/07 01:45	net-next	cc0626c2aaed	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/06 20:38	net-next	cc0626c2aaed	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/06 19:30	net-next	cc0626c2aaed	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/06 18:28	net-next	cc0626c2aaed	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/06 14:16	net-next	cc0626c2aaed	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/06 09:04	net-next	cc0626c2aaed	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/06 04:32	net-next	514e1150da9c	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/05 20:01	net-next	514e1150da9c	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/05 17:20	net-next	7d42e84eb99d	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/05 08:36	net-next	7d42e84eb99d	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/05 04:03	net-next	7d42e84eb99d	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/05 00:38	net-next	7d42e84eb99d	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/04 23:18	net-next	7d42e84eb99d	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/04 14:02	net-next	428e68e1a85a	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/04 13:12	net-next	428e68e1a85a	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-upstream-net-kasan-gce	2021/04/04 08:21	net-next	428e68e1a85a	6a81331a	.config	log	report			info	WARNING: suspicious RCU usage in bond_ipsec_add_sa
ci-qemu-upstream	2020/11/01 19:41	upstream	31f020064f9d	8bc4594f	.config	log	report			info
ci-upstream-kasan-gce-386	2021/01/15 16:28	upstream	146620506274	65a7a854	.config	log	report			info
ci-upstream-net-kasan-gce	2021/01/17 07:41	net-next	c761b2df9df0	65a7a854	.config	log	report			info
ci-upstream-net-kasan-gce	2020/09/20 01:15	net-next	a5a3303e26cd	53ce8104	.config	log	report			info