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Date:   Mon, 30 Sep 2019 08:20:26 +0200
From:   Jeroen Roovers <jer@gentoo.org>
To:     Helge Deller <deller@gmx.de>
Cc:     linux-parisc@vger.kernel.org,
        James Bottomley <James.Bottomley@hansenpartnership.com>,
        John David Anglin <dave.anglin@bell.net>,
        Sven Schnelle <svens@stackframe.org>
Subject: Re: [PATCH] parisc: Fix vmap memory leak in ioremap()/iounmap()
Message-ID: <20190930082026.6ac087ff@wim.jer>
In-Reply-To: <20190909133856.GA32746@ls3530.fritz.box>
References: <20190909133856.GA32746@ls3530.fritz.box>
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On Mon, 9 Sep 2019 15:38:56 +0200
Helge Deller <deller@gmx.de> wrote:

> Sven noticed that calling ioremap() and iounmap() multiple times leads
> to a vmap memory leak:
> 	vmap allocation for size 4198400 failed:
> 	use vmalloc=<size> to increase size
> 
> It seems we missed calling remove_vm_area() for ioummap().

That patch seems to work (tested on a C8000 for a couple of weeks). I
was surprised it wasn't part of the "parisc architecture updates for
kernel v5.4" pull request.


Kind regards,
     jer