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mbind: fix processing when new range ovarlaps existing range(s)

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Change-Id: I240a0205f0d836e4ff1a16b6739a3b366543bc06
Refs: #1384
This commit is contained in:
Ken Sato
2020-01-16 11:33:55 +09:00
parent f00d03445c
commit 83bbb87a0f
13 changed files with 1038 additions and 46 deletions
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104
test/issues/1384/C1384T06.c Normal file
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#include <sys/types.h>
#include <sys/mman.h>
#include <errno.h>
#include <numa.h>
#include <numaif.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include "./C1384.h"
#define PAGES 5
static unsigned long pagesize;
struct mbind_info base1 = {0, 3, MPOL_BIND};
struct mbind_info base2 = {3, 2, MPOL_BIND};
struct mbind_info new = {1, 3, MPOL_DEFAULT};
static int expect_policies[PAGES] = {M_B, M_D, M_D, M_D, M_B};
int main(int argc, char **argv)
{
void *addr;
int i, node, err, policy, ret = 0;
unsigned long base_start, base_size, new_start, new_size;
struct bitmask *nmask = numa_allocate_nodemask();
pagesize = getpagesize();
node = 1;
numa_bitmask_setbit(nmask, node);
addr = mmap(NULL, pagesize * PAGES, PROT_WRITE,
MAP_ANON | MAP_PRIVATE, 0, 0);
if (addr == MAP_FAILED) {
perror("mmap faile: ");
ret = -1;
goto out;
}
/* make page populate */
memset(addr, 0, pagesize * PAGES);
/* base1 mbind */
base_start = (unsigned long)addr + pagesize * base1.offset;
base_size = pagesize * base1.size;
err = mbind((void *)base_start, base_size, base1.policy, nmask->maskp,
nmask->size, MPOL_MF_MOVE_ALL);
if (err != 0) {
perror("base1 mbind fail: ");
ret = -1;
goto out;
}
printf("base1 mbind: 0x%lx - 0x%lx policy:%d\n",
base_start, base_start + base_size, base1.policy);
/* base2 mbind */
base_start = (unsigned long)addr + pagesize * base2.offset;
base_size = pagesize * base2.size;
err = mbind((void *)base_start, base_size, base2.policy, nmask->maskp,
nmask->size, MPOL_MF_MOVE_ALL);
if (err != 0) {
perror("base2 mbind fail: ");
ret = -1;
goto out;
}
printf("base2 mbind: 0x%lx - 0x%lx policy:%d\n",
base_start, base_start + base_size, base2.policy);
/* new mbind */
new_start = (unsigned long)addr + pagesize * new.offset;
new_size = pagesize * new.size;
err = mbind((void *)new_start, new_size, new.policy,
NULL, 0, 0);
if (err != 0) {
perror("new mbind fail: ");
ret = -1;
goto out;
}
printf("new mbind: 0x%lx - 0x%lx policy:%d\n",
new_start, new_start + new_size, new.policy);
for (i = 0; i < PAGES; i++) {
err = get_mempolicy(&policy, nmask->maskp, nmask->size,
addr + pagesize * i, MPOL_F_ADDR);
if (err != 0) {
perror("get_mempolicy fail: ");
ret = -1;
goto out;
}
if (policy != expect_policies[i]) {
printf("[NG] policy[%d] is %d (expected %d)\n",
i, policy, expect_policies[i]);
ret = -1;
goto out;
}
}
printf("[OK] policies are expected\n");
out:
return ret;
}