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| author | Andrey Ryabinin <a.ryabinin@samsung.com> | 2015-03-24 18:31:23 +0300 |
|---|---|---|
| committer | Jesper Nilsson <jespern@axis.com> | 2015-03-25 11:35:12 +0100 |
| commit | d939b52abe0cee9cc3167f554da6b864db86d3f2 (patch) | |
| tree | 216a954433d77372b97def0e3959fce0f3c50641 /arch/cris | |
| parent | d3dad475b2839b9964ef54211e135eb6fb9952f9 (diff) | |
| download | linux-d939b52abe0cee9cc3167f554da6b864db86d3f2.tar.gz linux-d939b52abe0cee9cc3167f554da6b864db86d3f2.tar.bz2 linux-d939b52abe0cee9cc3167f554da6b864db86d3f2.zip | |
cris: fix integer overflow in ELF_ET_DYN_BASE
Almost all arches define ELF_ET_DYN_BASE as 2/3 of TASK_SIZE.
Though it seems that some architectures do this in a wrong way.
The problem is that 2*TASK_SIZE may overflow 32-bits so
the real ELF_ET_DYN_BASE becomes wrong.
Fix this overflow by dividing TASK_SIZE prior to multiplying:
(TASK_SIZE / 3 * 2)
Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Signed-off-by: Jesper Nilsson <jespern@axis.com>
Diffstat (limited to 'arch/cris')
| -rw-r--r-- | arch/cris/include/asm/elf.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/cris/include/asm/elf.h b/arch/cris/include/asm/elf.h index 30ded8fbf592..c2a394ff55ff 100644 --- a/arch/cris/include/asm/elf.h +++ b/arch/cris/include/asm/elf.h @@ -71,7 +71,7 @@ typedef unsigned long elf_fpregset_t; the loader. We need to make sure that it is out of the way of the program that it will "exec", and that there is sufficient room for the brk. */ -#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) +#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) /* This yields a mask that user programs can use to figure out what instruction set this CPU supports. This could be done in user space, |