[src/trunk]: src/sys/external/bsd/acpica/dist/tables Correct misaligned point...

[kamil <kamil%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b24864dbfcf4
branches:  trunk
changeset: 999311:b24864dbfcf4
user:      kamil <kamil%NetBSD.org@localhost>
date:      Tue May 28 13:34:40 2019 +0000

description:
Correct misaligned pointer dereference of type UINT32 in ACPICA

Detected with kUBSan.

diffstat:

 sys/external/bsd/acpica/dist/tables/tbutils.c |  5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diffs (15 lines):

diff -r 1bc0efeb164e -r b24864dbfcf4 sys/external/bsd/acpica/dist/tables/tbutils.c
--- a/sys/external/bsd/acpica/dist/tables/tbutils.c     Tue May 28 13:24:25 2019 +0000
+++ b/sys/external/bsd/acpica/dist/tables/tbutils.c     Tue May 28 13:34:40 2019 +0000
@@ -228,8 +228,9 @@
          * 32-bit platform, RSDT: Return 32-bit table entry
          * 64-bit platform, RSDT: Expand 32-bit to 64-bit and return
          */
-        return ((ACPI_PHYSICAL_ADDRESS) (*ACPI_CAST_PTR (
-            UINT32, TableEntry)));
+        UINT32 addr;
+        memcpy(&addr, ACPI_CAST_PTR (UINT32, TableEntry), sizeof(addr));
+        return (ACPI_PHYSICAL_ADDRESS) addr;
     }
     else
     {