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authorRyan Salsamendi <rsalsamendi@hotmail.com>2017-06-09 12:01:39 -0700
committerPatrick Georgi <pgeorgi@google.com>2017-06-14 19:51:12 +0200
commitf0b071202377e3e4c5550ddaa28a727556745fa7 (patch)
treec0c239caf4cba7beb00ceea61a401eb9d1f7b220 /src/lib
parentcde2bdf496408f7083448d5805114360ba7bef8c (diff)
downloadcoreboot-f0b071202377e3e4c5550ddaa28a727556745fa7.tar.xz
arch/x86: Fix undefined behavior
Fixes report found by undefined behavior sanitizer. Dereferencing a pointer that is not aligned to the size of access is undefined behavior. Switch to memcpy() for unaligned write to EBDA_LOWMEM. Change other write16()s in setup_ebda() to memcpy() for consistency. Change-Id: I79814bd47a14ec59d84068b11d094dc2531995d9 Signed-off-by: Ryan Salsamendi <rsalsamendi@hotmail.com> Reviewed-on: https://review.coreboot.org/20132 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
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