Commit 18676ffc authored by Alexey Dobriyan's avatar Alexey Dobriyan Committed by Linus Torvalds

fs/binfmt_elf.c: make BAD_ADDR() unlikely

If some mapping goes past TASK_SIZE it will be rejected by kernel which
means no such userspace binaries exist.

Mark every such check as unlikely.

Link: http://lkml.kernel.org/r/20191215124355.GA21124@avx2Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 03c6d723
...@@ -97,7 +97,7 @@ static struct linux_binfmt elf_format = { ...@@ -97,7 +97,7 @@ static struct linux_binfmt elf_format = {
.min_coredump = ELF_EXEC_PAGESIZE, .min_coredump = ELF_EXEC_PAGESIZE,
}; };
#define BAD_ADDR(x) ((unsigned long)(x) >= TASK_SIZE) #define BAD_ADDR(x) (unlikely((unsigned long)(x) >= TASK_SIZE))
static int set_brk(unsigned long start, unsigned long end, int prot) static int set_brk(unsigned long start, unsigned long end, int prot)
{ {
......
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