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| author | Richard Braun <rbraun@sceen.net> | 2012-11-20 23:17:12 +0000 |
|---|---|---|
| committer | Richard Braun <rbraun@sceen.net> | 2012-11-20 23:17:12 +0000 |
| commit | 7aa475db4ce168401167dc2ffed6221493ae2db4 (patch) | |
| tree | 553790cd9090fa49e1bba3cbdade93bdacafd012 | |
| parent | bdae52f1465743ad96b2261e053ae4967f807557 (diff) | |
Fix calls to vm_map when size is 0
* vm/vm_map.c (vm_map_enter): return KERN_INVALID_ARGUMENT if size is 0.
* vm/vm_user.c (vm_map): Likewise.
| -rw-r--r-- | vm/vm_map.c | 3 | ||||
| -rw-r--r-- | vm/vm_user.c | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/vm/vm_map.c b/vm/vm_map.c index c46afc0..22fa836 100644 --- a/vm/vm_map.c +++ b/vm/vm_map.c @@ -784,6 +784,9 @@ kern_return_t vm_map_enter( #define RETURN(value) { result = value; goto BailOut; } + if (size == 0) + return KERN_INVALID_ARGUMENT; + StartAgain: ; start = *address; diff --git a/vm/vm_user.c b/vm/vm_user.c index a8ce982..6fe398e 100644 --- a/vm/vm_user.c +++ b/vm/vm_user.c @@ -342,6 +342,9 @@ kern_return_t vm_map( return(KERN_INVALID_ARGUMENT); } + if (size == 0) + return KERN_INVALID_ARGUMENT; + *address = trunc_page(*address); size = round_page(size); |