shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 11:26:02 +09:00
Code Issues Packages Projects Releases Wiki Activity

UPSTREAM: arm64: mm: Really fix sparse warning in untagged_addr()

Browse Source 
(Upstream commit 9c1cac424c).

untagged_addr() can be called with a '__user' pointer parameter and must
therefore use '__force' casts both when passing this parameter through
to sign_extend64() as a 'u64', but also when casting the 's64' return
value back to the '__user' pointer type.

Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Bug: 135692346
Change-Id: I8806aa6911cda3ab0489dff59b75ae214b02d48e
This commit is contained in:
Will Deacon
2019-08-09 15:39:37 +01:00
committed by Alistair Delva
parent fc8246889d
commit 86794180e2
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm64/include/asm/memory.h
View File

@@ -217,7 +217,7 @@ static inline unsigned long kaslr_offset(void)
* pass on to access_ok(), for instance.
*/
#define untagged_addr(addr) \
((__typeof__(addr))sign_extend64((__force u64)(addr), 55))
((__force __typeof__(addr))sign_extend64((__force u64)(addr), 55))
#ifdef CONFIG_KASAN_SW_TAGS
#define __tag_shifted(tag) ((u64)(tag) << 56)