linux-kernel - Re: [PATCH 3/3] init: use do_mount() instead of ksys

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Message-ID: <CAHk-=wh8VLe3AEKhz=1bzSO=1fv4EM71EhufxuC=Gp=+bLhXoA@mail.gmail.com>
Date:   Sun, 15 Dec 2019 19:50:23 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Dominik Brodowski <linux@...inikbrodowski.net>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Ingo Molnar <mingo@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] init: use do_mount() instead of ksys_mount()

On Sun, Dec 15, 2019 at 5:35 PM Ondřej Jirman <megi@....cz> wrote:
>
> Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000

Duh. So much for the trivial obvious conversion.

It didn't take "data might be NULL" into account.

A patch like this, perhaps? Untested..

               Linus

View attachment "patch.diff" of type "text/x-patch" (1201 bytes)