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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2008-06-10 10:03:20 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-06-10 10:03:27 +0200 |
| commit | ee0ddadd086e25503f81be551c43f66472300acd (patch) | |
| tree | 0f1606c133835abd3952af30efcee03230182139 /arch/s390/mm | |
| parent | 12829126aa47758608578cc5be3a5adffc3d4b09 (diff) | |
| download | linux-ee0ddadd086e25503f81be551c43f66472300acd.tar.bz2 | |
[S390] vmemmap: fix off-by-one bug.
If a memory range is supposed to be added to the 1:1 mapping and it
ends just below the maximum supported physical address it won't
succeed. This is because a test doesn't consider that the end address
is 1 smaller than start + size.
Fix the comparison.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/mm')
| -rw-r--r-- | arch/s390/mm/vmem.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c index f591188fa2c0..e4868bfc672f 100644 --- a/arch/s390/mm/vmem.c +++ b/arch/s390/mm/vmem.c @@ -236,7 +236,7 @@ static int insert_memory_segment(struct memory_segment *seg) { struct memory_segment *tmp; - if (seg->start + seg->size >= VMEM_MAX_PHYS || + if (seg->start + seg->size > VMEM_MAX_PHYS || seg->start + seg->size < seg->start) return -ERANGE; |