linux-kernel - BUG: sleeping function called from invalid context at net/core/sock.c:LINE (3)

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Message-ID: <001a11460b583e59090565914ece@google.com>
Date:   Mon, 19 Feb 2018 06:14:00 -0800
From:   syzbot <syzbot+749d9d87c294c00ca856@...kaller.appspotmail.com>
To:     avagin@...tuozzo.com, davem@...emloft.net, dvyukov@...gle.com,
        ebiederm@...ssion.com, fw@...len.de, jon.maloy@...csson.com,
        ktkhai@...tuozzo.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, nicolas.dichtel@...nd.com,
        pabeni@...hat.com, roman.kapl@...go.com,
        syzkaller-bugs@...glegroups.com,
        tipc-discussion@...ts.sourceforge.net, ying.xue@...driver.com
Subject: BUG: sleeping function called from invalid context at
 net/core/sock.c:LINE (3)

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger  
crash:

Reported-and-tested-by:  
syzbot+749d9d87c294c00ca856@...kaller.appspotmail.com

Note: the tag will also help syzbot to understand when the bug is fixed.

Tested on net-next commit
1ec010e705934c8acbe7dbf31afc81e60e3d828b (Fri Feb 16 10:03:07 2018 +0000)
tun: export flags, uid, gid, queue information over netlink

compiler: gcc (GCC) 7.1.1 20170620
Patch is attached.
Kernel config is attached.


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View attachment "patch.diff" of type "text/plain" (436 bytes)

View attachment "config.txt" of type "text/plain" (136427 bytes)