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| author | Ingo Molnar <[email protected]> | 2012-07-11 07:41:37 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2012-07-11 07:41:37 +0000 |
| commit | 92254d31444aad272155f7963e65910c402703dd (patch) | |
| tree | 8e454ebe60cbac9a71b1771d4e471cfe54826963 /arch/x86/lib/usercopy.c | |
| parent | Merge tag 'amd-thresholding-fixes-for-3.6' of git://git.kernel.org/pub/scm/li... (diff) | |
| parent | Linux 3.5-rc6 (diff) | |
| download | kernel-92254d31444aad272155f7963e65910c402703dd.tar.gz kernel-92254d31444aad272155f7963e65910c402703dd.zip | |
Merge tag 'v3.5-rc6' into x86/mce
Merge Linux 3.5-rc6 before merging more code.
Signed-off-by: Ingo Molnar <[email protected]>
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) |