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Date:   Tue, 14 May 2019 15:42:36 -0700 (PDT)
From:   David Miller <>
Subject: Re: [PATCH v2] ppp: deflate: Fix possible crash in deflate_init

From: YueHaibing <>
Date: Tue, 14 May 2019 22:55:32 +0800

> BUG: unable to handle kernel paging request at ffffffffa018f000
> If ppp_deflate fails to register in deflate_init,
> module initialization failed out, however
> ppp_deflate_draft may has been regiestred and not
> unregistered before return.
> Then the seconed modprobe will trigger crash like this.
> Reported-by: Hulk Robot <>
> Signed-off-by: YueHaibing <>
> ---
> v2: also check ppp_deflate_draft registration

Applied and queued up for -stable, thanks.

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