FAT-fs (loop4): Can't find a valid FAT filesystem
FAT-fs (loop4): bogus number of directory entries (608)
WARNING: CPU: 1 PID: 26106 at net/mac80211/rate.c:279 ieee80211_check_rate_mask+0x243/0x2c0 syzkaller/managers/linux-4-19/kernel/net/mac80211/rate.c:279
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 26106 Comm: syz-executor.0 Not tainted 4.19.172-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack syzkaller/managers/linux-4-19/kernel/lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef syzkaller/managers/linux-4-19/kernel/lib/dump_stack.c:118
 panic+0x26a/0x50e syzkaller/managers/linux-4-19/kernel/kernel/panic.c:186
 __warn.cold+0x20/0x5a syzkaller/managers/linux-4-19/kernel/kernel/panic.c:541
 report_bug+0x262/0x2b0 syzkaller/managers/linux-4-19/kernel/lib/bug.c:186
 fixup_bug syzkaller/managers/linux-4-19/kernel/arch/x86/kernel/traps.c:178 [inline]
 fixup_bug syzkaller/managers/linux-4-19/kernel/arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x1d7/0x310 syzkaller/managers/linux-4-19/kernel/arch/x86/kernel/traps.c:296
 invalid_op+0x14/0x20 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/entry_64.S:1038
RIP: 0010:ieee80211_check_rate_mask+0x243/0x2c0 syzkaller/managers/linux-4-19/kernel/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 72 c7 c8 f9 e8 6d c7 c8 f9 <0f> 0b eb e4 e8 54 7e fe f9 e9 ed fd ff ff 4c 89 ef e8 47 7e fe f9
RSP: 0018:ffff8880b421f578 EFLAGS: 00010216
RAX: 0000000000040000 RBX: ffff8880508a2640 RCX: ffffc90005b1b000
RDX: 00000000000139f6 RSI: ffffffff87999253 RDI: 0000000000000005
RBP: ffff888050853318 R08: ffff8880508a3608 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000ffffffff R14: ffff8880508a2640 R15: 0000000000000000
 ieee80211_change_bss+0x528/0xbd0 syzkaller/managers/linux-4-19/kernel/net/mac80211/cfg.c:2066
 rdev_change_bss syzkaller/managers/linux-4-19/kernel/net/wireless/rdev-ops.h:380 [inline]
 nl80211_set_bss+0x78d/0xf50 syzkaller/managers/linux-4-19/kernel/net/wireless/nl80211.c:6029
 genl_family_rcv_msg+0x642/0xc40 syzkaller/managers/linux-4-19/kernel/net/netlink/genetlink.c:602
 genl_rcv_msg+0xbf/0x160 syzkaller/managers/linux-4-19/kernel/net/netlink/genetlink.c:627
 netlink_rcv_skb+0x160/0x440 syzkaller/managers/linux-4-19/kernel/net/netlink/af_netlink.c:2455
 genl_rcv+0x24/0x40 syzkaller/managers/linux-4-19/kernel/net/netlink/genetlink.c:638
 netlink_unicast_kernel syzkaller/managers/linux-4-19/kernel/net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x4d5/0x690 syzkaller/managers/linux-4-19/kernel/net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x6bb/0xc40 syzkaller/managers/linux-4-19/kernel/net/netlink/af_netlink.c:1909
 sock_sendmsg_nosec syzkaller/managers/linux-4-19/kernel/net/socket.c:622 [inline]
 sock_sendmsg+0xc3/0x120 syzkaller/managers/linux-4-19/kernel/net/socket.c:632
 ___sys_sendmsg+0x7bb/0x8e0 syzkaller/managers/linux-4-19/kernel/net/socket.c:2115
 __sys_sendmsg syzkaller/managers/linux-4-19/kernel/net/socket.c:2153 [inline]
 __do_sys_sendmsg syzkaller/managers/linux-4-19/kernel/net/socket.c:2162 [inline]
 __se_sys_sendmsg syzkaller/managers/linux-4-19/kernel/net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x132/0x220 syzkaller/managers/linux-4-19/kernel/net/socket.c:2160
 do_syscall_64+0xf9/0x620 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x465d99
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4d5bdd2188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465d99
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003
RBP: 00000000004bcf27 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffcbcdc2aff R14: 00007f4d5bdd2300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..