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| author | Arjan van de Ven <arjan@infradead.org> | 2009-10-02 07:50:50 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-10-02 19:01:42 +0200 |
| commit | 63312b6a6faae3f2e5577f2b001e3b504f10a2aa (patch) | |
| tree | 5ef6f8449d844652c7046c2659409ef8297f3e0b /include | |
| parent | 4a3127693001c61a21d1ce680db6340623f52e93 (diff) | |
| download | linux-63312b6a6faae3f2e5577f2b001e3b504f10a2aa.tar.gz linux-63312b6a6faae3f2e5577f2b001e3b504f10a2aa.tar.bz2 linux-63312b6a6faae3f2e5577f2b001e3b504f10a2aa.zip | |
x86: Add a Kconfig option to turn the copy_from_user warnings into errors
For automated testing it is useful to have the option to turn
the warnings on copy_from_user() etc checks into errors:
In function ‘copy_from_user’,
inlined from ‘fd_copyin’ at drivers/block/floppy.c:3080,
inlined from ‘fd_ioctl’ at drivers/block/floppy.c:3503:
linux/arch/x86/include/asm/uaccess_32.h:213:
error: call to ‘copy_from_user_overflow’ declared with attribute error:
copy_from_user buffer size is not provably correct
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <20091002075050.4e9f7641@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/compiler-gcc4.h | 1 | ||||
| -rw-r--r-- | include/linux/compiler.h | 3 |
2 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h index f1709c1f9eae..77542c57e20a 100644 --- a/include/linux/compiler-gcc4.h +++ b/include/linux/compiler-gcc4.h @@ -41,4 +41,5 @@ #define __compiletime_object_size(obj) __builtin_object_size(obj, 0) #if __GNUC_MINOR__ >= 4 #define __compiletime_warning(message) __attribute__((warning(message))) +#define __compiletime_error(message) __attribute__((error(message))) #endif diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 950356311f12..88fd4b673cb4 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -273,6 +273,9 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect); #ifndef __compiletime_warning # define __compiletime_warning(message) #endif +#ifndef __compiletime_error +# define __compiletime_error(message) +#endif /* * Prevent the compiler from merging or refetching accesses. The compiler |