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kallsyms: fix potential overflow in binary search

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This will probably never trigger... but it won't hurt to be careful.

http://googleresearch.blogspot.com/2006/06/extra-extra-read-all-about-it-nearly.html

Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Cc: Joshua Bloch <jjb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Vegard Nossum 2008-07-25 01:45:34 -07:00 committed by Linus Torvalds
parent 58340a07c1
commit 2fc9c4e18f
1 changed files with 1 additions and 1 deletions
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2
kernel/kallsyms.c
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@ -176,7 +176,7 @@ static unsigned long get_symbol_pos(unsigned long addr,
high = kallsyms_num_syms;
while (high - low > 1) {
mid = (low + high) / 2;
mid = low + (high - low) / 2;
if (kallsyms_addresses[mid] <= addr)
low = mid;
else