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| author | Takashi Iwai <tiwai@suse.de> | 2012-07-18 13:53:06 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-07-18 13:53:06 +0200 |
| commit | 61eab000f3536f080eab43fd5eed3fd817ded76e (patch) | |
| tree | d1448b3b90c5650b522c8d13d8bdd7bd65a5cf52 /arch/x86/lib/usercopy.c | |
| parent | 68e67f40b7343383517c3f951b4b8db7626406bc (diff) | |
| parent | 4e01ec636e64707d202a1ca21a47bbc6d53085b7 (diff) | |
Merge branch 'topic/hda' into for-next
This is a large chunk merge for 3.6 HD-audio things
Diffstat (limited to 'arch/x86/lib/usercopy.c')
| -rw-r--r-- | arch/x86/lib/usercopy.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/lib/usercopy.c b/arch/x86/lib/usercopy.c index f61ee67ec00f..4f74d94c8d97 100644 --- a/arch/x86/lib/usercopy.c +++ b/arch/x86/lib/usercopy.c @@ -8,6 +8,7 @@ #include <linux/module.h> #include <asm/word-at-a-time.h> +#include <linux/sched.h> /* * best effort, GUP based copy_from_user() that is NMI-safe @@ -21,6 +22,9 @@ copy_from_user_nmi(void *to, const void __user *from, unsigned long n) void *map; int ret; + if (__range_not_ok(from, n, TASK_SIZE)) + return len; + do { ret = __get_user_pages_fast(addr, 1, 0, &page); if (!ret) |