The read-mask function assumes that it is running in 32-bit mode,
by addressing the bitmask as a series of int values, instead of
longs. This is broken as can easily be reproduced by running numademo
on a bit-endian 64-bit system.
Changing the addressing to use 'long' values fixes the problem.
Reported-by: Mijo Safradin <[EMAIL PROTECTED]>
---
Note: the set_nodemask_size() function is broken as well, it seems
to always set the nodemask size to "17" with the s2nbits implementation.
The fallback path in there looks correct.
--- a/libnuma.c 2008-12-04 14:25:30.000000000 +0100
+++ b/libnuma.c 2008-11-20 13:40:29.000000000 +0100
@@ -392,9 +372,9 @@ read_mask(char *s, struct bitmask *bmp)
{
char *end = s;
char *prevend;
- unsigned long *start = bmp->maskp;
- unsigned long *p = start;
- unsigned long *q;
+ unsigned int *start = (unsigned int *)bmp->maskp;
+ unsigned int *p = start;
+ unsigned int *q;
unsigned int i;
unsigned int n = 0;
@@ -431,14 +411,14 @@
}
/* Poor mans fls() */
- for(i = sizeof(long) * 8 - 1; i >= 0; i--)
+ for(i = 31; i >= 0; i--)
if (test_bit(i, start + n))
break;
/*
* Return the last bit set
*/
- return ((sizeof(unsigned long)*8) * n) + i;
+ return ((sizeof(unsigned int)*8) * n) + i;
}
/*
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