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909
2013 May 13
8
[Bug 2101] New: Unaligned memory access on sparc in UMAC implemetation
....c, and
later cast to 64-bit unsigned integer and accessed in pdf_gen_xor():
264 *((UINT64 *)buf) ^= ((UINT64 *)pc->cache)[ndx];
AFAIK, there is no assurance, that a static char array will be
double-word aligned. And indeed, when compiled using Solaris Studio
12.1 cc, the variable address (0x909ac) is only word-aligned:
58588: 37 00 02 42 sethi %hi(0x90800), %i3
5858c: 40 00 18 1a call 5e5f4 <umac_final>
58590: 92 06 e1 ac add %i3, 0x1ac, %o1 ! 909ac
<Bbss.bss>
This later causes a crash in:
pdf_gen_xor+0x68: ldx [0x909ac], %o5
I am p...