netdev - BUG: sleeping function called from invalid context in corrupted

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Message-ID: <000000000000238d9b05b3ac77c5@google.com>
Date:   Mon, 09 Nov 2020 05:23:18 -0800
From:   syzbot <syzbot+b7aeb9318541a1c709f1@...kaller.appspotmail.com>
To:     davem@...emloft.net, johannes.berg@...el.com,
        johannes@...solutions.net, kuba@...nel.org,
        linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: BUG: sleeping function called from invalid context in corrupted

Hello,

syzbot found the following issue on:

HEAD commit:    bf3e7628 Merge branch 'mtd/fixes' of git://git.kernel.org/..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=16d76e2a500000
kernel config:  https://syzkaller.appspot.com/x/.config?x=e791ddf0875adf65
dashboard link: https://syzkaller.appspot.com/bug?extid=b7aeb9318541a1c709f1
compiler:       clang version 11.0.0 (https://github.com/llvm/llvm-project.git ca2dcbd030eadbf0aa9b660efe864ff08af6e18b)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14df611a500000

The issue was bisected to:

commit dcd479e10a0510522a5d88b29b8f79ea3467d501
Author: Johannes Berg <johannes.berg@...el.com>
Date:   Fri Oct 9 12:17:11 2020 +0000

    mac80211: always wind down STA state

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1218ff14500000
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1118ff14500000
console output: https://syzkaller.appspot.com/x/log.txt?x=1618ff14500000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+b7aeb9318541a1c709f1@...kaller.appspotmail.com
Fixes: dcd479e10a05 ("mac80211: always wind down STA state")

BUG: sleeping function called from invalid context at net/mac80211/sta_info.c:1962
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 35, name: kworker/u4:2
4 locks held by kworker/u4:2/35:
 #0: ffff88802af11138 ((wq_completion)phy4){+.+.}-{0:0}, at: process_one_work+0x6f4/0xfc0 kernel/workqueue.c:2245
 #1: ffffc90000e0fd80 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x733/0xfc0 kernel/workqueue.c:2247
 #2: ffff88802f27cd00 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1021 [inline]
 #2: ffff88802f27cd00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x4e/0x1450 net/mac80211/ibss.c:1683


---
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For information about bisection process see: https://goo.gl/tpsmEJ#bisection
syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches