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From: Kees Cook <keescook@chromium.org>
To: Christoph Hellwig <hch@lst.de>
Cc: Kees Cook <keescook@chromium.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-kernel@vger.kernel.org, Stephen Boyd <swboyd@chromium.org>,
	iommu@lists.linux-foundation.org,
	Semmle Security Reports <security-reports@semmle.com>,
	Dan Carpenter <dan.carpenter@oracle.com>,
	Jesper Dangaard Brouer <brouer@redhat.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Laura Abbott <labbott@redhat.com>,
	Robin Murphy <robin.murphy@arm.com>,
	Allison Randal <allison@lohutok.net>
Subject: [PATCH v3 0/2] dma-mapping: Add vmap checks to dma_map_single()
Date: Thu, 10 Oct 2019 15:28:27 -0700
Message-ID: <20191010222829.21940-1-keescook@chromium.org> (raw)

Duplicating patch 1 commit log:

As we've seen from USB and other areas[1], we need to always do runtime
checks for DMA operating on memory regions that might be remapped. This
adds vmap checks (similar to those already in USB but missing in other
places) into dma_map_single() so all callers benefit from the checking.

[1] https://git.kernel.org/linus/3840c5b78803b2b6cc1ff820100a74a092c40cbb

-Kees

v3:
 - switch to dev_warn() (gregkh, hch)
 - split USB cleanup into a separate patch
v2: https://lore.kernel.org/lkml/201910041420.F6E55D29A@keescook
v1: https://lore.kernel.org/lkml/201910021341.7819A660@keescook

Kees Cook (2):
  dma-mapping: Add vmap checks to dma_map_single()
  usb: core: Remove redundant vmap checks

 drivers/usb/core/hcd.c      | 8 +-------
 include/linux/dma-mapping.h | 6 ++++++
 2 files changed, 7 insertions(+), 7 deletions(-)

-- 
2.17.1
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Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-10 22:28 Kees Cook [this message]
2019-10-10 22:28 ` [PATCH v3 1/2] " Kees Cook
2019-10-11  5:02   ` Greg Kroah-Hartman
2019-10-11  9:33     ` Robin Murphy
2019-10-10 22:28 ` [PATCH v3 2/2] usb: core: Remove redundant vmap checks Kees Cook

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