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

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Message-ID: <000000000000c1a01605d4300787@google.com>
Date:   Mon, 27 Dec 2021 23:47:17 -0800
From:   syzbot <syzbot+e7d46eb426883fb97efd@...kaller.appspotmail.com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     christophe.jaillet@...adoo.fr, glider@...gle.com,
        gregkh@...uxfoundation.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        stern@...land.harvard.edu, syzkaller-bugs@...glegroups.com,
        usb-storage@...ts.one-eyed-alien.net
Subject: Re: KMSAN: uninit-value in alauda_check_media

> Hi,
>
> (2nd try - text only format - sorry for the noise)
>
>
> first try to use syzbot. I hope I do it right.
> Discussion about the syz report can be found at 
> https://lore.kernel.org/linux-kernel/0000000000007d25ff059457342d@google.com/
>
> This patch only test if alauda_get_media_status() (and its embedded 
> usb_stor_ctrl_transfer()) before using the data.
> In case of error, it returns USB_STOR_TRANSPORT_ERROR as done elsewhere.
>
> #syz test: 

KMSAN bugs can only be tested on https://github.com/google/kmsan.git tree
because KMSAN tool is not upstreamed yet.
See https://goo.gl/tpsmEJ#kmsan-bugs for details.

> git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
>
> CJ
>