WARNING in ieee80211_check_rate

WARNING in ieee80211_check_rate_mask
Status: upstream: reported C repro on 2020/11/06 04:49
Reported-by: syzbot+366ba7ce5ed51ee32a19@syzkaller.appspotmail.com
First crash: 386d, last: 43d

Fix bisection: failed (bisect log)

similar bugs (2):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in ieee80211_check_rate_mask	C	done		17	23d	417d	0/22	upstream: reported C repro on 2020/10/06 08:08
linux-4.14	WARNING in ieee80211_check_rate_mask	C			1	19h17m	396d	0/1	upstream: reported C repro on 2020/10/27 07:51

Sample crash report:

wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
netlink: 20 bytes leftover after parsing attributes in process `syz-executor384'.
WARNING: CPU: 0 PID: 8108 at net/mac80211/rate.c:279 ieee80211_check_rate_mask+0x243/0x2c0 net/mac80211/rate.c:279
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 8108 Comm: syz-executor384 Not tainted 4.19.155-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+0x1fc/0x2fe lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x61 kernel/panic.c:541
 report_bug+0x262/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:ieee80211_check_rate_mask+0x243/0x2c0 net/mac80211/rate.c:279
Code: 83 c2 03 38 ca 7c 04 84 c9 75 47 89 84 ab c8 09 00 00 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f e9 b2 36 a9 f9 e8 ad 36 a9 f9 <0f> 0b eb e4 e8 54 5f df f9 e9 ed fd ff ff 4c 89 ef e8 47 5f df f9
RSP: 0018:ffff88809f05f578 EFLAGS: 00010293
RAX: ffff8880b27e4140 RBX: ffff8880b02e9c80 RCX: ffffffff87bb9626
RDX: 0000000000000000 RSI: ffffffff87bb97e3 RDI: 0000000000000005
RBP: ffff8880a257a8d8 R08: ffff8880b02eac48 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000ffffffff R14: ffff8880b02e9c80 R15: 0000000000000000
 ieee80211_change_bss+0x528/0xbd0 net/mac80211/cfg.c:2066
 rdev_change_bss net/wireless/rdev-ops.h:380 [inline]
 nl80211_set_bss+0x78d/0xf50 net/wireless/nl80211.c:6029
 genl_family_rcv_msg+0x642/0xc40 net/netlink/genetlink.c:602
 genl_rcv_msg+0xbf/0x160 net/netlink/genetlink.c:627
 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:638
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xc3/0x120 net/socket.c:632
 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115
 __sys_sendmsg net/socket.c:2153 [inline]
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4419b9
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 8b 0d fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffd4db436d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004419b9
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004
RBP: 000000306e616c77 R08: 0000000000000000 R09: 0000001d00000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000032
R13: 0000000000000000 R14: 000000000000000c R15: 0000000000000004
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (2):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci2-linux-4-19	2020/11/06 04:48	linux-4.19.y	b94de4d19498	cba33199	.config	log	report	syz	C
ci2-linux-4-19	2021/02/17 08:48	linux-4.19.y	811218eceeaa	052f8d9f	.config	log	report			info	WARNING in ieee80211_check_rate_mask