bisecting fixing commit since 5b7a52cd2eef952cee8a72512ef370bcdef46636
building syzkaller on 8b3eaf58f88f0e0a776866110d9baf8367dde8f0
testing commit 5b7a52cd2eef952cee8a72512ef370bcdef46636 with gcc (GCC) 8.4.1 20210217
kernel signature: 869adb481aa0ffb8a407c267908cacfacc3514ec51fcdd5f52aa4c4f04513112
all runs: crashed: WARNING in ieee80211_check_rate_mask
testing current HEAD 3242aa3a635c0958671ee1e4b0958dcc7c4e5c79
testing commit 3242aa3a635c0958671ee1e4b0958dcc7c4e5c79 with gcc (GCC) 8.4.1 20210217
kernel signature: 4d290f15a165edc3d5e1009c3684f06c69f7647020405ef4e79fac558b271874
all runs: crashed: WARNING in ieee80211_check_rate_mask
revisions tested: 2, total time: 22m9.393202214s (build: 14m49.63990874s, test: 6m24.423876097s)
the crash still happens on HEAD
commit msg: Linux 4.14.222
crash: WARNING in ieee80211_check_rate_mask
IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
netlink: 20 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'.
------------[ cut here ]------------
WARNING: CPU: 1 PID: 9169 at net/mac80211/rate.c:279 ieee80211_check_rate_mask+0x1f3/0x2c0 net/mac80211/rate.c:276
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 9169 Comm: syz-executor.1 Not tainted 4.14.222-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x14b/0x1e7 lib/dump_stack.c:58
 panic+0x1b0/0x358 kernel/panic.c:183
 __warn.cold.7+0x25/0x25 kernel/panic.c:547
 report_bug+0x1a1/0x200 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x1bd/0x310 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:ieee80211_check_rate_mask+0x1f3/0x2c0 net/mac80211/rate.c:279
RSP: 0018:ffff8881ce8ff4f0 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff8881d6161bc0 RCX: 0000000000000000
RDX: 1ffff1103ac2c57a RSI: ffff8881d2eeb220 RDI: ffff8881d6162bd0
RBP: ffff8881ce8ff528 R08: ffff8881d0b0caa1 R09: 0000000000000004
R10: ffffed103a5dd647 R11: 0000000000000000 R12: ffff8881d2eeb2f8
R13: ffff8881d6161bc0 R14: 0000000000000000 R15: ffff8881ce8ff5d0
 ieee80211_change_bss+0x409/0x930 net/mac80211/cfg.c:2052
 rdev_change_bss net/wireless/rdev-ops.h:380 [inline]
 nl80211_set_bss+0x658/0xdd0 net/wireless/nl80211.c:5690
 genl_family_rcv_msg+0x57f/0xfe0 net/netlink/genetlink.c:600
 genl_rcv_msg+0xa7/0x140 net/netlink/genetlink.c:625
 netlink_rcv_skb+0x12f/0x3b0 net/netlink/af_netlink.c:2433
 genl_rcv+0x23/0x40 net/netlink/genetlink.c:636
 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
 netlink_unicast+0x40b/0x610 net/netlink/af_netlink.c:1313
 netlink_sendmsg+0x639/0xbe0 net/netlink/af_netlink.c:1878
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xac/0xf0 net/socket.c:656
 ___sys_sendmsg+0x625/0x920 net/socket.c:2062
 __sys_sendmsg+0xc1/0x140 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0xd/0x20 net/socket.c:2103
 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x465849
RSP: 002b:00007f2f038f1188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000055bf00 RCX: 0000000000465849
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004
RBP: 00000000004af675 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000055bf00
R13: 00007fff34d598bf R14: 00007f2f038f1300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..