Subject: [syzbot] WARNING: lock held when returning to user space in ieee80211_change_mac

From: syzbot <[email-masked]>
Date: Sat, 01 Oct 2022 07:26:40 -0700

Hello,

syzbot found the following issue on:

HEAD commit:    6627a2074d5c net/smc: Support SO_REUSEPORT
git tree:       net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=10183a70880000
kernel config:  https://syzkaller.appspot.com/x/.config?x=d4d64087513b5aa1
dashboard link: https://syzkaller.appspot.com/bug?extid=4ef359e6b423499fa4e1
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/9ecb75606956/disk-6627a207.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1073865fcb40/vmlinux-6627a207.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: [email-masked]

================================================
WARNING: lock held when returning to user space!
6.0.0-rc6-syzkaller-01407-g6627a2074d5c #0 Not tainted
------------------------------------------------
syz-executor.3/10164 is leaving the kernel with locks still held!
1 lock held by syz-executor.3/10164:
 #0: ffff888147acaa88 (&local->mtx){+.+.}-{3:3}, at: ieee80211_can_powered_addr_change net/mac80211/iface.c:217 [inline]
 #0: ffff888147acaa88 (&local->mtx){+.+.}-{3:3}, at: ieee80211_change_mac+0x9b4/0xf40 net/mac80211/iface.c:264

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