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| author | Jeff Garzik <jeff@garzik.org> | 2006-12-07 10:57:19 +0100 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-12-07 10:57:19 +0100 |
| commit | 8d1413b28033c49c7f1a4d320e815d7a5531acee (patch) | |
| tree | b37281abef014cd60803b81c100388d7a475d49e /mm/nommu.c | |
| parent | [PATCH] NetXen: multiport firmware support, ioctl interface (diff) | |
| parent | [PATCH] A few small additions and corrections to README (diff) | |
| download | linux-8d1413b28033c49c7f1a4d320e815d7a5531acee.tar.xz linux-8d1413b28033c49c7f1a4d320e815d7a5531acee.zip | |
Merge branch 'master' into upstream
Conflicts:
drivers/net/netxen/netxen_nic.h
drivers/net/netxen/netxen_nic_main.c
Diffstat (limited to 'mm/nommu.c')
| -rw-r--r-- | mm/nommu.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/mm/nommu.c b/mm/nommu.c index 8bdde9508f3b..6a2a8aada401 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -497,15 +497,17 @@ static int validate_mmap_request(struct file *file, (flags & MAP_TYPE) != MAP_SHARED) return -EINVAL; - if (PAGE_ALIGN(len) == 0) - return addr; - - if (len > TASK_SIZE) + if (!len) return -EINVAL; + /* Careful about overflows.. */ + len = PAGE_ALIGN(len); + if (!len || len > TASK_SIZE) + return -ENOMEM; + /* offset overflow? */ if ((pgoff + (len >> PAGE_SHIFT)) < pgoff) - return -EINVAL; + return -EOVERFLOW; if (file) { /* validate file mapping requests */ |