* ioremap off by one bug
@ 2003-03-06 21:58 Andreas Klein
0 siblings, 0 replies; only message in thread
From: Andreas Klein @ 2003-03-06 21:58 UTC (permalink / raw)
To: linux-kernel; +Cc: torvalds, mantel
Hello,
we have found an off by one bug in ioremap.
The following patch fixes the problem.
--- arch/i386/mm/ioremap.c.orig 2003-03-06 23:16:12.000000000 +0100
+++ arch/i386/mm/ioremap.c 2003-03-06 23:16:30.000000000 +0100
@@ -142,7 +142,7 @@
*/
offset = phys_addr & ~PAGE_MASK;
phys_addr &= PAGE_MASK;
- size = PAGE_ALIGN(last_addr) - phys_addr;
+ size = PAGE_ALIGN(last_addr+1) - phys_addr;
/*
* Ok, go for it..
bye,
-- Andreas Klein
asklein@cip.physik.uni-wuerzburg.de
root / webmaster @cip.physik.uni-wuerzburg.de
root / webmaster @www.physik.uni-wuerzburg.de
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