From: Greg KH <gregkh@linuxfoundation.org>
To: Christoph Hellwig <hch@lst.de>
Cc: torvalds@linux-foundation.org, aros@gmx.com,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org
Subject: Re: [PATCH] device core: fix dma_mask handling in platform_device_register_full
Date: Wed, 11 Mar 2020 17:14:23 +0100 [thread overview]
Message-ID: <20200311161423.GA3941932@kroah.com> (raw)
In-Reply-To: <20200311160710.376090-1-hch@lst.de>
On Wed, Mar 11, 2020 at 05:07:10PM +0100, Christoph Hellwig wrote:
> Ever since the generic platform device code started allocating DMA masks
> itself the code to allocate and leak a private DMA mask in
> platform_device_register_full has been superflous. More so the fact that
> it unconditionally frees the DMA mask allocation in the failure path
> can lead to slab corruption if the function fails later on for a device
> where it didn't allocate the mask. Just remove the offending code.
>
> Fixes: cdfee5623290 ("driver core: initialize a default DMA mask for platform device")
> Reported-by: Artem S. Tashkinov <aros@gmx.com>
> Tested-by: Artem S. Tashkinov <aros@gmx.com>
No s-o-b from you? :(
I can take this, or Linus, you can take this now if you want to as well:
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
next prev parent reply other threads:[~2020-03-11 16:14 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-11 16:07 [PATCH] device core: fix dma_mask handling in platform_device_register_full Christoph Hellwig
2020-03-11 16:10 ` Artem S. Tashkinov
2020-03-11 16:14 ` Greg KH [this message]
2020-03-11 16:15 ` Christoph Hellwig
2020-03-11 17:18 ` Greg KH
2020-03-11 17:18 ` Greg KH
2020-03-11 17:23 ` Christoph Hellwig
2020-03-11 17:23 ` Christoph Hellwig
2020-03-11 17:25 ` Linus Torvalds
2020-03-11 17:25 ` Linus Torvalds
2020-03-11 16:19 ` Robin Murphy
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