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author | Helge Deller <deller@gmx.de> | 2018-10-12 23:37:46 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-11-21 11:27:30 +0300 |
commit | ae53e64ea305d278857d31ea2d20dcad7a6ac929 (patch) | |
tree | 0fa0492afdd5c7822a64a5efba5b3e1739a7f800 /sound/pci/hda/patch_conexant.c | |
parent | 7d39307dd6dad9b4a345bb121aae061f91a0dce1 (diff) | |
download | linux-ae53e64ea305d278857d31ea2d20dcad7a6ac929.tar.xz |
parisc: Fix map_pages() to not overwrite existing pte entries
commit 3c229b3f2dd8133f61bb81d3cb018be92f4bba39 upstream.
Fix a long-existing small nasty bug in the map_pages() implementation which
leads to overwriting already written pte entries with zero, *if* map_pages() is
called a second time with an end address which isn't aligned on a pmd boundry.
This happens for example if we want to remap only the text segment read/write
in order to run alternative patching on the code. Exiting the loop when we
reach the end address fixes this.
Cc: stable@vger.kernel.org
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound/pci/hda/patch_conexant.c')
0 files changed, 0 insertions, 0 deletions