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BUG: KASAN: use-after-free in ieee80211_monitor_select_queue+0x23a/0x240 net/mac80211/iface.c:909
Read of size 2 at addr ffff88803c6e2dfb by task syz.3.2015/13442

CPU: 1 PID: 13442 Comm: syz.3.2015 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:316 [inline]
 print_report+0xa8/0x210 mm/kasan/report.c:420
 kasan_report+0x10b/0x140 mm/kasan/report.c:524
 ieee80211_monitor_select_queue+0x23a/0x240 net/mac80211/iface.c:909
 netdev_core_pick_tx+0x118/0x340 net/core/dev.c:4245
 __dev_queue_xmit+0xb19/0x37c0 net/core/dev.c:4331
 packet_snd net/packet/af_packet.c:3127 [inline]
 packet_sendmsg+0x3bc3/0x4e60 net/packet/af_packet.c:3158
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 ____sys_sendmsg+0x5be/0x970 net/socket.c:2518
 ___sys_sendmsg+0x2a2/0x360 net/socket.c:2572
 __sys_sendmsg net/socket.c:2601 [inline]
 __do_sys_sendmsg net/socket.c:2610 [inline]
 __se_sys_sendmsg+0x1bb/0x2a0 net/socket.c:2608
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f99a6f9ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f99a7e72028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f99a7215fa0 RCX: 00007f99a6f9ce59
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000000000000004
RBP: 00007f99a7032d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f99a7216038 R14: 00007f99a7215fa0 R15: 00007ffdfba1f7c8
 </TASK>

The buggy address belongs to the physical page:
page:ffffea0000f1b880 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x3c6e2
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 ffffea0000f1b888 ffffea0000f1b888 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner info is not present (never set?)

Memory state around the buggy address:
 ffff88803c6e2c80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88803c6e2d00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88803c6e2d80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                                                ^
 ffff88803c6e2e00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88803c6e2e80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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