WARNING in sta_info

WARNING in sta_info_alloc
Status: upstream: reported C repro on 2020/10/06 08:08
Reported-by: syzbot+45d7c243c006f39dc55a@syzkaller.appspotmail.com
First crash: 21d, last: 8d11h

Cause bisection: introduced by (bisect log) :
commit 643c332d519bdfbf80d21f40d1c0aa0ccf3ec1cb
Author: Zi Shen Lim <zlim.lnx@gmail.com>
Date: Thu Jun 9 04:18:50 2016 +0000

arm64: bpf: optimize LD_ABS, LD_IND

Crash: KASAN: null-ptr-deref Read (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 sta_info_alloc	C			3	20d	20d	0/1	upstream: reported C repro on 2020/10/05 20:21
linux-4.14	WARNING in sta_info_alloc				3	4d12h	21d	0/1	upstream: reported on 2020/10/05 12:47

Sample crash report:

------------[ cut here ]------------
WARNING: CPU: 0 PID: 6879 at net/mac80211/ieee80211_i.h:1447 ieee80211_get_sband net/mac80211/ieee80211_i.h:1447 [inline]
WARNING: CPU: 0 PID: 6879 at net/mac80211/ieee80211_i.h:1447 sta_info_alloc+0x1900/0x1f90 net/mac80211/sta_info.c:469
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 6879 Comm: syz-executor071 Not tainted 5.9.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __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:ieee80211_get_sband net/mac80211/ieee80211_i.h:1447 [inline]
RIP: 0010:sta_info_alloc+0x1900/0x1f90 net/mac80211/sta_info.c:469
Code: 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 f0 04 00 00 49 8b 9f 60 01 00 00 e9 fc f6 ff ff e8 80 20 b6 f9 <0f> 0b e8 e9 62 66 00 31 ff 89 c3 89 c6 e8 ce 1c b6 f9 85 db 74 1d
RSP: 0018:ffffc9000539f498 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff87c01d61
RDX: ffff8880a91ec3c0 RSI: ffffffff87c01e10 RDI: 0000000000000005
RBP: ffff8880896e0c80 R08: 0000000000000001 R09: ffffffff8d0c29e7
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880896e31b0 R14: dffffc0000000000 R15: ffff888092f06000
 ieee80211_add_station+0x28c/0x660 net/mac80211/cfg.c:1586
 rdev_add_station net/wireless/rdev-ops.h:190 [inline]
 nl80211_new_station+0xde7/0x1440 net/wireless/nl80211.c:6294
 genl_family_rcv_msg_doit net/netlink/genetlink.c:669 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:714 [inline]
 genl_rcv_msg+0x61d/0x980 net/netlink/genetlink.c:731
 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2470
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:742
 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:651 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:671
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x441999
Code: e8 dc 05 03 00 48 83 c4 18 c3 0f 1f 80 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 0f 83 7b 0d fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffd9fa54bf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441999
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000005
RBP: 000000306e616c77 R08: 0000000000000000 R09: 0000002000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000032
R13: 0000000000000000 R14: 000000000000000c R15: 0000000000000004
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (33):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Maintainers
ci-upstream-kasan-gce	2020/10/05 13:53	upstream	549738f1	5ef9c291	.config	log	report	syz	C		davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-kasan-gce-selinux-root	2020/10/05 13:41	upstream	549738f1	5ef9c291	.config	log	report	syz	C		davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-this-kasan-gce	2020/10/13 12:12	net	64a632da	bd69ee0d	.config	log	report	syz	C		davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-this-kasan-gce	2020/10/10 08:10	net	923527dc	93817d89	.config	log	report	syz	C		davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-this-kasan-gce	2020/10/10 05:50	net	923527dc	93817d89	.config	log	report	syz	C		davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-this-kasan-gce	2020/10/09 18:35	net	3fdd47c3	d81b165e	.config	log	report	syz	C		davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-this-kasan-gce	2020/10/09 16:29	net	3fdd47c3	d81b165e	.config	log	report	syz	C		davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-kasan-gce	2020/10/10 22:24	net-next	c77fb07f	4a77ae0b	.config	log	report	syz	C		davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-kasan-gce	2020/10/07 03:32	net-next	8b0308fe	1880b4a9	.config	log	report	syz	C		davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-kasan-gce	2020/10/06 01:50	net-next	c2568c8c	1880b4a9	.config	log	report	syz	C		davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-kasan-gce	2020/10/05 19:39	net-next	c2568c8c	1880b4a9	.config	log	report	syz	C		davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-kasan-gce	2020/10/05 18:51	net-next	c2568c8c	1880b4a9	.config	log	report	syz	C		davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-kasan-gce-root	2020/10/05 20:37	upstream	549738f1	1880b4a9	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-kasan-gce	2020/10/05 14:20	upstream	549738f1	5ef9c291	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-kasan-gce-root	2020/10/05 13:39	upstream	549738f1	5ef9c291	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-kasan-gce-root	2020/10/05 13:36	upstream	549738f1	5ef9c291	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-kasan-gce-selinux-root	2020/10/05 12:54	upstream	549738f1	5ef9c291	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-kasan-gce	2020/10/05 12:52	upstream	549738f1	5ef9c291	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-kasan-gce-smack-root	2020/10/05 12:47	upstream	549738f1	5ef9c291	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-qemu-upstream-386	2020/10/18 01:50	upstream	9d9af100	fea47c01	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-kasan-gce-386	2020/10/05 20:56	upstream	549738f1	1880b4a9	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-kasan-gce-386	2020/10/05 13:49	upstream	549738f1	5ef9c291	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-this-kasan-gce	2020/10/15 22:04	net	2ecbc1f6	6e262c73	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-this-kasan-gce	2020/10/15 08:55	net	2ef813b8	63869021	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-this-kasan-gce	2020/10/15 03:28	net	2ef813b8	fc7735a2	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-this-kasan-gce	2020/10/12 20:39	net	8098bd69	d32b0bbf	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-this-kasan-gce	2020/10/07 05:06	net	d91dc434	1880b4a9	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-this-kasan-gce	2020/10/06 17:42	net	7575fdda	1880b4a9	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-this-kasan-gce	2020/10/05 23:53	net	4296adc3	1880b4a9	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-kasan-gce	2020/10/06 23:08	net-next	8b0308fe	1880b4a9	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-kasan-gce	2020/10/05 13:10	net-next	f5083d0c	5ef9c291	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-net-kasan-gce	2020/10/05 12:51	net-next	f5083d0c	5ef9c291	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-linux-next-kasan-gce-root	2020/10/05 12:50	linux-next	2172e358	5ef9c291	.config	log	report			info	davem@davemloft.net, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org