Bug #1723

mmap() MAP_ANON honors offset

Added by vsrinivas over 4 years ago. Updated over 4 years ago.

Status:ClosedStart date:
Priority:NormalDue date:
Assignee:sjg% Done:

0%

Category:-
Target version:-

Description

#include <stdlib.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <unistd.h>

int main(int argc, char *argv[]) {
char *c = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_PRIVATE |
MAP_ANON, -1, 16);
return printf("%x \n", c);
}

gets an address of xxxxx010. mmap is supposed to fail with EINVAL given an
offset and MAP_ANON.

Patch here: http://endeavour.zapto.org/dfly/mmap_anon_offset.diff

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