linux-kernel - Re: KMSAN: uninit-value in cdc_ncm_set_dgram

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Message-ID: <1572952316.2921.3.camel@suse.com>
Date:   Tue, 05 Nov 2019 12:11:56 +0100
From:   Oliver Neukum <oneukum@...e.com>
To:     syzbot <syzbot+0631d878823ce2411636@...kaller.appspotmail.com>,
        davem@...emloft.net, glider@...gle.com,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: KMSAN: uninit-value in cdc_ncm_set_dgram_size

Am Mittwoch, den 30.10.2019, 12:22 -0700 schrieb syzbot:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    96c6c319 net: kasan: kmsan: support CONFIG_GENERIC_CSUM on..
> git tree:       https://github.com/google/kmsan.git master
> console output: https://syzkaller.appspot.com/x/log.txt?x=11f103bce00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=9e324dfe9c7b0360
> dashboard link: https://syzkaller.appspot.com/bug?extid=0631d878823ce2411636
> compiler:       clang version 9.0.0 (/home/glider/llvm/clang  
> 80fee25776c2fb61e74c1ecb1a523375c2500b69)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10dd9774e00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13651a24e00000
> 
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+0631d878823ce2411636@...kaller.appspotmail.com
#syz test: https://github.com/google/kmsan.git 96c6c319

View attachment "0001-CDC-NCM-handle-incomplete-transfer-of-MTU.patch" of type "text/x-patch" (1146 bytes)