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| author | Al Viro <viro@zeniv.linux.org.uk> | 2017-03-26 02:38:23 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-03-29 19:04:35 +0300 |
| commit | a41e0d754240fe8ca9c4f2070bf67e3b0228aa22 (patch) | |
| tree | be90092175e319a82cc4995673860255e92d3a0b /arch/x86/lib/usercopy_64.c | |
| parent | 3f763453e6f27d82fa0ac58f8e1ac4094c1fb1f8 (diff) | |
| download | linux-a41e0d754240fe8ca9c4f2070bf67e3b0228aa22.tar.xz | |
x86: don't wank with magical size in __copy_in_user()
... especially since copy_in_user() doesn't
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/x86/lib/usercopy_64.c')
| -rw-r--r-- | arch/x86/lib/usercopy_64.c | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/arch/x86/lib/usercopy_64.c b/arch/x86/lib/usercopy_64.c index 6c8b6a6c1b38..3b7c40a2e3e1 100644 --- a/arch/x86/lib/usercopy_64.c +++ b/arch/x86/lib/usercopy_64.c @@ -54,15 +54,6 @@ unsigned long clear_user(void __user *to, unsigned long n) } EXPORT_SYMBOL(clear_user); -unsigned long copy_in_user(void __user *to, const void __user *from, unsigned len) -{ - if (access_ok(VERIFY_WRITE, to, len) && access_ok(VERIFY_READ, from, len)) { - return copy_user_generic((__force void *)to, (__force void *)from, len); - } - return len; -} -EXPORT_SYMBOL(copy_in_user); - /* * Try to copy last bytes and clear the rest if needed. * Since protection fault in copy_from/to_user is not a normal situation, |