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| author |   Mike Waychison <mikew@google.com> | 2011-02-25 15:41:49 -0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@suse.de> | 2011-02-25 16:10:03 -0800 |
| commit | 66245ad025e02fe9e727c03d43308bb24e346bb6 (patch) | |
| tree | 9597235bf126cde0d4d5e0a6d51a58bcbe8d15ca /Documentation/zh_CN | |
| parent | firmware: Add documentation for /sys/firmware/dmi (diff) | |
| download | linux-dev-66245ad025e02fe9e727c03d43308bb24e346bb6.tar.xz linux-dev-66245ad025e02fe9e727c03d43308bb24e346bb6.zip | |
firmware: Fix unaligned memory accesses in dmi-sysfs
DMI entries are arranged in memory back to back with no alignment
guarantees. This means that the struct dmi_header passed to callbacks
from dmi_walk() itself isn't byte aligned. This causes problems on
architectures that expect aligned data, such as IA64.
The dmi-sysfs patchset introduced structure member accesses through this
passed in dmi_header. Fix this by memcpy()ing the structures to
temporary locations on stack when inspecting/copying them.
Signed-off-by: Mike Waychison <mikew@google.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation/zh_CN')
0 files changed, 0 insertions, 0 deletions