general protection fault in nl802154_add_llsec

general protection fault in nl802154_add_llsec_key
Status: upstream: reported C repro on 2021/02/15 15:17
Reported-by: syzbot+ce4e062c2d51977ddc50@syzkaller.appspotmail.com
First crash: 13d, last: 2h26m

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: general protection fault in nl802154_add_llsec_key (log)
Repro: C syz .config

similar bugs (2):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.14	general protection fault in nl802154_add_llsec_key	C			36	17h43m	13d	0/1	upstream: reported C repro on 2021/02/14 23:52
linux-4.19	general protection fault in nl802154_add_llsec_key	C			18	3h15m	11d	0/1	upstream: reported C repro on 2021/02/17 18:56

Sample crash report:

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: 8444 Comm: syz-executor279 Not tainted 5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:nla_len include/net/netlink.h:1148 [inline]
RIP: 0010:nla_parse_nested_deprecated include/net/netlink.h:1231 [inline]
RIP: 0010:nl802154_add_llsec_key+0x1f7/0x560 net/ieee802154/nl802154.c:1547
Code: 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 2f 03 00 00 48 8b 93 28 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 d1 48 c1 e9 03 <0f> b6 0c 01 48 89 d0 83 e0 07 83 c0 01 38 c8 7c 08 84 c9 0f 85 c9
RSP: 0018:ffffc90001adf4a0 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88802117c000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff88892195 RDI: ffff88802117c128
RBP: 1ffff9200035be95 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff87315ffa R11: 0000000000000000 R12: ffff88801c222000
R13: ffff88801bb34bd0 R14: ffffc90001adf8b0 R15: 0000000000000000
FS:  0000000001dcd300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200006c8 CR3: 000000002146a000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 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: 0033:0x43f8a9
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:00007ffe56c91f68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 000000000043f8a9
RDX: 0000000000000000 RSI: 0000000020000a00 RDI: 0000000000000004
RBP: 0000000000403310 R08: 00000000004004a0 R09: 00000000004004a0
R10: 0000000000000003 R11: 0000000000000246 R12: 00000000004033a0
R13: 0000000000000000 R14: 00000000004ad018 R15: 00000000004004a0
Modules linked in:
---[ end trace 1844a7d5c231fd88 ]---
RIP: 0010:nla_len include/net/netlink.h:1148 [inline]
RIP: 0010:nla_parse_nested_deprecated include/net/netlink.h:1231 [inline]
RIP: 0010:nl802154_add_llsec_key+0x1f7/0x560 net/ieee802154/nl802154.c:1547
Code: 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 2f 03 00 00 48 8b 93 28 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 d1 48 c1 e9 03 <0f> b6 0c 01 48 89 d0 83 e0 07 83 c0 01 38 c8 7c 08 84 c9 0f 85 c9
RSP: 0018:ffffc90001adf4a0 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88802117c000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff88892195 RDI: ffff88802117c128
RBP: 1ffff9200035be95 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff87315ffa R11: 0000000000000000 R12: ffff88801c222000
R13: ffff88801bb34bd0 R14: ffffc90001adf8b0 R15: 0000000000000000
FS:  0000000001dcd300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200006c8 CR3: 000000002146a000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (96):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-net-this-kasan-gce	2021/02/15 00:45	net	57baf8cc	98682e5e	.config	log	report	syz	C		general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/15 00:40	net-next	c4762993	98682e5e	.config	log	report	syz	C		general protection fault in nl802154_add_llsec_key
ci-upstream-kasan-gce-root	2021/02/28 15:28	upstream	5695e516	4c37c133	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-kasan-gce-smack-root	2021/02/27 14:39	upstream	3fb6d0e0	4c37c133	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-kasan-gce-root	2021/02/27 09:19	upstream	3fb6d0e0	4c37c133	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-kasan-gce-selinux-root	2021/02/25 08:58	upstream	719bbd4a	fcc6d71b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-kasan-gce-smack-root	2021/02/24 19:29	upstream	c03c21ba	fcc6d71b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-kasan-gce-root	2021/02/24 09:30	upstream	c03c21ba	fcc6d71b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-kasan-gce-root	2021/02/23 07:10	upstream	a99163e9	c26fb06b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-kasan-gce-selinux-root	2021/02/23 05:18	upstream	a99163e9	c26fb06b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-kasan-gce-root	2021/02/23 05:16	upstream	a99163e9	c26fb06b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-kasan-gce-selinux-root	2021/02/22 23:13	upstream	a99163e9	c26fb06b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-kasan-gce-root	2021/02/22 07:29	upstream	55f62bc8	a659b3f1	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-kasan-gce-selinux-root	2021/02/21 22:25	upstream	55f62bc8	a659b3f1	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-kasan-gce-selinux-root	2021/02/21 22:24	upstream	55f62bc8	a659b3f1	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-kasan-gce-selinux-root	2021/02/21 22:24	upstream	55f62bc8	a659b3f1	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-kasan-gce-root	2021/02/21 22:16	upstream	55f62bc8	a659b3f1	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-kasan-gce-root	2021/02/21 22:13	upstream	55f62bc8	a659b3f1	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-this-kasan-gce	2021/02/28 21:16	net	eee7ede6	4c37c133	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-this-kasan-gce	2021/02/27 03:01	net	2c87f7a3	4c37c133	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-this-kasan-gce	2021/02/26 21:32	net	2c87f7a3	4c37c133	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-this-kasan-gce	2021/02/26 11:25	net	2c87f7a3	76f7fc95	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-this-kasan-gce	2021/02/24 21:49	net	fcb30073	fcc6d71b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-this-kasan-gce	2021/02/24 15:11	net	fcb30073	fcc6d71b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-this-kasan-gce	2021/02/24 06:11	net	fcb30073	fcc6d71b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-this-kasan-gce	2021/02/23 18:10	net	42870a1a	fcc6d71b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/28 18:04	net-next	d310ec03	4c37c133	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/28 03:04	net-next	d310ec03	4c37c133	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/27 20:07	net-next	d310ec03	4c37c133	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/27 10:41	net-next	d310ec03	4c37c133	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/27 09:22	net-next	d310ec03	4c37c133	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/27 00:02	net-next	d310ec03	4c37c133	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/26 16:41	net-next	d310ec03	4c37c133	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/26 00:55	net-next	d310ec03	76f7fc95	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/25 22:31	net-next	d310ec03	76f7fc95	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/25 19:33	net-next	d310ec03	76f7fc95	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/25 15:57	net-next	d310ec03	76f7fc95	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/25 08:04	net-next	d310ec03	fcc6d71b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/25 00:55	net-next	d310ec03	fcc6d71b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/24 16:48	net-next	d310ec03	fcc6d71b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/24 05:09	net-next	d310ec03	fcc6d71b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/24 03:37	net-next	d310ec03	fcc6d71b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/23 23:04	net-next	d310ec03	fcc6d71b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/23 13:01	net-next	d310ec03	c26fb06b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/23 05:15	net-next	d310ec03	c26fb06b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/23 05:10	net-next	d310ec03	c26fb06b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/23 04:27	net-next	d310ec03	c26fb06b	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/22 13:51	net-next	d310ec03	a659b3f1	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/22 09:34	net-next	d310ec03	a659b3f1	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-net-kasan-gce	2021/02/22 06:01	net-next	d310ec03	a659b3f1	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-linux-next-kasan-gce-root	2021/02/28 17:02	linux-next	d01f2f7e	4c37c133	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-upstream-linux-next-kasan-gce-root	2021/02/27 01:09	linux-next	d01f2f7e	4c37c133	.config	log	report			info	general protection fault in nl802154_add_llsec_key
ci-qemu2-arm64	2021/02/28 08:01	upstream	5695e516	4c37c133	.config	log	report			info	BUG: unable to handle kernel paging request in nl802154_add_llsec_key