korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2025-01-11 08:14:27 +08:00
Code Issues Packages Projects Releases Wiki Activity

Merge KUAP fix from topic/uaccess-ppc into fixes

Browse Source 
Merge a KUAP fix from Nick that we're keeping in a topic branch due to
interactions with other series that are headed for next.
This commit is contained in:
Michael Ellerman 2020-05-02 09:30:26 +10:00
commit 07ad112ab7
1 changed files with 35 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
arch/powerpc/include/asm/uaccess.h
View File

@ -166,13 +166,17 @@ do { \
({ \
long __pu_err; \
__typeof__(*(ptr)) __user *__pu_addr = (ptr); \
__typeof__(*(ptr)) __pu_val = (x); \
__typeof__(size) __pu_size = (size); \
\
if (!is_kernel_addr((unsigned long)__pu_addr)) \
might_fault(); \
__chk_user_ptr(ptr); \
__chk_user_ptr(__pu_addr); \
if (do_allow) \
__put_user_size((x), __pu_addr, (size), __pu_err); \
__put_user_size(__pu_val, __pu_addr, __pu_size, __pu_err); \
else \
__put_user_size_allowed((x), __pu_addr, (size), __pu_err); \
__put_user_size_allowed(__pu_val, __pu_addr, __pu_size, __pu_err); \
\
__pu_err; \
})
@ -180,9 +184,13 @@ do { \
({ \
long __pu_err = -EFAULT; \
__typeof__(*(ptr)) __user *__pu_addr = (ptr); \
__typeof__(*(ptr)) __pu_val = (x); \
__typeof__(size) __pu_size = (size); \
\
might_fault(); \
if (access_ok(__pu_addr, size)) \
__put_user_size((x), __pu_addr, (size), __pu_err); \
if (access_ok(__pu_addr, __pu_size)) \
__put_user_size(__pu_val, __pu_addr, __pu_size, __pu_err); \
\
__pu_err; \
})
@ -190,8 +198,12 @@ do { \
({ \
long __pu_err; \
__typeof__(*(ptr)) __user *__pu_addr = (ptr); \
__chk_user_ptr(ptr); \
__put_user_size((x), __pu_addr, (size), __pu_err); \
__typeof__(*(ptr)) __pu_val = (x); \
__typeof__(size) __pu_size = (size); \
\
__chk_user_ptr(__pu_addr); \
__put_user_size(__pu_val, __pu_addr, __pu_size, __pu_err); \
\
__pu_err; \
})
@ -283,15 +295,18 @@ do { \
long __gu_err; \
__long_type(*(ptr)) __gu_val; \
__typeof__(*(ptr)) __user *__gu_addr = (ptr); \
__chk_user_ptr(ptr); \
__typeof__(size) __gu_size = (size); \
\
__chk_user_ptr(__gu_addr); \
if (!is_kernel_addr((unsigned long)__gu_addr)) \
might_fault(); \
barrier_nospec(); \
if (do_allow) \
__get_user_size(__gu_val, __gu_addr, (size), __gu_err); \
__get_user_size(__gu_val, __gu_addr, __gu_size, __gu_err); \
else \
__get_user_size_allowed(__gu_val, __gu_addr, (size), __gu_err); \
__get_user_size_allowed(__gu_val, __gu_addr, __gu_size, __gu_err); \
(x) = (__typeof__(*(ptr)))__gu_val; \
\
__gu_err; \
})
@ -300,12 +315,15 @@ do { \
long __gu_err = -EFAULT; \
__long_type(*(ptr)) __gu_val = 0; \
__typeof__(*(ptr)) __user *__gu_addr = (ptr); \
__typeof__(size) __gu_size = (size); \
\
might_fault(); \
if (access_ok(__gu_addr, (size))) { \
if (access_ok(__gu_addr, __gu_size)) { \
barrier_nospec(); \
__get_user_size(__gu_val, __gu_addr, (size), __gu_err); \
__get_user_size(__gu_val, __gu_addr, __gu_size, __gu_err); \
} \
(x) = (__force __typeof__(*(ptr)))__gu_val; \
\
__gu_err; \
})
@ -314,10 +332,13 @@ do { \
long __gu_err; \
__long_type(*(ptr)) __gu_val; \
__typeof__(*(ptr)) __user *__gu_addr = (ptr); \
__chk_user_ptr(ptr); \
__typeof__(size) __gu_size = (size); \
\
__chk_user_ptr(__gu_addr); \
barrier_nospec(); \
__get_user_size(__gu_val, __gu_addr, (size), __gu_err); \
__get_user_size(__gu_val, __gu_addr, __gu_size, __gu_err); \
(x) = (__force __typeof__(*(ptr)))__gu_val; \
\
__gu_err; \
})