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Matthew Auld 6adeea2be8 drm/i915/dmabuf: fix sg_table handling in map_dma_buf 
commit f90daa9759 upstream.

We need to iterate over the original entries here for the sg_table,
pulling out the struct page for each one, to be remapped. However
currently this incorrectly iterates over the final dma mapped entries,
which is likely just one gigantic sg entry if the iommu is enabled,
leading to us only mapping the first struct page (and any physically
contiguous pages following it), even if there is potentially lots more
data to follow.

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/7306
Fixes: 1286ff7397 ("i915: add dmabuf/prime buffer sharing support.")
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Michael J. Ruhl <michael.j.ruhl@intel.com>
Cc: <stable@vger.kernel.org> # v3.5+
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221028155029.494736-1-matthew.auld@intel.com
(cherry picked from commit 28d52f99bb)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-04-19 17:56:13 +08:00
arch MIPS: jump_label: Fix compat branch range check 2023-04-19 17:56:12 +08:00
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drivers drm/i915/dmabuf: fix sg_table handling in map_dma_buf 2023-04-19 17:56:13 +08:00
fs nilfs2: fix use-after-free bug of ns_writer on remount 2023-04-19 17:56:13 +08:00
include vmlinux.lds.h: Fix placement of '.data..decrypted' section 2023-04-19 17:56:13 +08:00
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sound ALSA: usb-audio: Add DSD support for Accuphase DAC-60 2023-04-19 17:56:13 +08:00
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README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.