general protection fault in nl802154_del_llsec

general protection fault in nl802154_del_llsec_dev
Status: upstream: reported C repro on 2021/02/18 17:21
Reported-by: syzbot+d946223c2e751d136c94@syzkaller.appspotmail.com
First crash: 15d, last: 3h42m

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: general protection fault in nl802154_del_llsec_dev (log)
Repro: C syz .config

similar bugs (2):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.19	general protection fault in nl802154_del_llsec_dev	C			14	58m	13d	0/1	upstream: reported C repro on 2021/02/15 03:59
linux-4.14	general protection fault in nl802154_del_llsec_dev	C			21	20h58m	15d	0/1	upstream: reported C repro on 2021/02/13 11:41

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: 8428 Comm: syz-executor295 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_del_llsec_dev+0x150/0x310 net/ieee802154/nl802154.c:1760
Code: 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 c4 01 00 00 48 8b 93 18 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 13
RSP: 0018:ffffc90001a67568 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88801def5400 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8888ffaa RDI: ffff88801def5518
RBP: 1ffff9200034ceae R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff87315ffa R11: 0000000000000000 R12: ffff8881443d6000
R13: ffff8881441e4bd0 R14: ffffc90001a678b0 R15: 0000000000000000
FS:  000000000208c300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3aac6fd6c0 CR3: 00000000210c4000 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: 0033:0x43f969
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:00007ffe784206c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 000000000043f969
RDX: 0000000020008800 RSI: 0000000020000600 RDI: 0000000000000003
RBP: 00000000004033d0 R08: 0000000000000008 R09: 00000000004004a0
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000403460
R13: 0000000000000000 R14: 00000000004ad018 R15: 00000000004004a0
Modules linked in:
---[ end trace 9aedc238aa0648a2 ]---
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_del_llsec_dev+0x150/0x310 net/ieee802154/nl802154.c:1760
Code: 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 c4 01 00 00 48 8b 93 18 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 13
RSP: 0018:ffffc90001a67568 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88801def5400 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8888ffaa RDI: ffff88801def5518
RBP: 1ffff9200034ceae R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff87315ffa R11: 0000000000000000 R12: ffff8881443d6000
R13: ffff8881441e4bd0 R14: ffffc90001a678b0 R15: 0000000000000000
FS:  000000000208c300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3aac6fd6c0 CR3: 00000000210c4000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (45):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-net-this-kasan-gce	2021/02/15 04:54	net	57baf8cc	98682e5e	.config	log	report	syz	C		general protection fault in nl802154_del_llsec_dev
ci-upstream-net-this-kasan-gce	2021/02/13 12:44	net	57baf8cc	98682e5e	.config	log	report	syz	C		general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/15 08:13	net-next	c48f8607	98682e5e	.config	log	report	syz	C		general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/13 15:56	net-next	773dc50d	98682e5e	.config	log	report	syz	C		general protection fault in nl802154_del_llsec_dev
ci-upstream-kasan-gce-smack-root	2021/02/27 22:10	upstream	5695e516	4c37c133	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-kasan-gce-smack-root	2021/02/27 19:47	upstream	5695e516	4c37c133	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-qemu-upstream	2021/02/27 17:23	upstream	3fb6d0e0	4c37c133	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-kasan-gce-root	2021/02/27 17:20	upstream	3fb6d0e0	4c37c133	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-kasan-gce-selinux-root	2021/02/27 17:20	upstream	3fb6d0e0	4c37c133	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-kasan-gce-selinux-root	2021/02/26 02:52	upstream	29c395c7	76f7fc95	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-kasan-gce-smack-root	2021/02/26 00:10	upstream	29c395c7	76f7fc95	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-kasan-gce-smack-root	2021/02/26 00:05	upstream	29c395c7	76f7fc95	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-kasan-gce-root	2021/02/24 12:21	upstream	c03c21ba	fcc6d71b	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-kasan-gce-root	2021/02/22 15:03	upstream	31caf8b2	a659b3f1	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-this-kasan-gce	2021/02/27 17:21	net	eee7ede6	4c37c133	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-this-kasan-gce	2021/02/26 21:14	net	2c87f7a3	4c37c133	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-this-kasan-gce	2021/02/25 05:59	net	6fbd15c0	fcc6d71b	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-this-kasan-gce	2021/02/23 04:46	net	3a2eb515	c26fb06b	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-this-kasan-gce	2021/02/22 03:10	net	d310ec03	a659b3f1	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-this-kasan-gce	2021/02/21 13:47	net	3af409ca	3e5ed8b4	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-this-kasan-gce	2021/02/21 01:07	net	3af409ca	3e5ed8b4	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-this-kasan-gce	2021/02/19 19:12	net	3af409ca	f689d40a	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-this-kasan-gce	2021/02/18 12:17	net	3af409ca	14052202	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/28 10:28	net-next	d310ec03	4c37c133	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/28 06:20	net-next	d310ec03	4c37c133	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/28 01:35	net-next	d310ec03	4c37c133	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/27 17:21	net-next	d310ec03	4c37c133	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/27 08:11	net-next	d310ec03	4c37c133	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/26 18:17	net-next	d310ec03	4c37c133	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/26 17:06	net-next	d310ec03	4c37c133	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/26 05:38	net-next	d310ec03	76f7fc95	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/26 03:46	net-next	d310ec03	76f7fc95	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/25 22:07	net-next	d310ec03	76f7fc95	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/25 11:39	net-next	d310ec03	fcc6d71b	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/24 20:39	net-next	d310ec03	fcc6d71b	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/24 10:32	net-next	d310ec03	fcc6d71b	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/24 01:33	net-next	d310ec03	fcc6d71b	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/21 13:48	net-next	38b5133a	3e5ed8b4	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/21 12:27	net-next	38b5133a	3e5ed8b4	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/21 04:52	net-next	38b5133a	3e5ed8b4	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/19 19:07	net-next	38b5133a	f689d40a	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-net-kasan-gce	2021/02/14 11:49	net-next	c4762993	98682e5e	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-linux-next-kasan-gce-root	2021/02/28 20:03	linux-next	d01f2f7e	4c37c133	.config	log	report			info	general protection fault in nl802154_del_llsec_dev
ci-upstream-linux-next-kasan-gce-root	2021/02/27 17:19	linux-next	d01f2f7e	4c37c133	.config	log	report			info	general protection fault in nl802154_del_llsec_dev