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selftest/vm: test that mremap fails on non-existent vma

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Add a regression test that validates that mremap fails for vma's that
don't exist.

Link: https://lkml.kernel.org/r/20220427224439.23828-3-dossche.niels@gmail.com
Signed-off-by: Niels Dossche <dossche.niels@gmail.com>
Cc: Mina Almasry <almasrymina@google.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Niels Dossche 2022-05-09 18:20:54 -07:00 committed by Andrew Morton
parent dd0623020e
commit 9994715333
1 changed files with 6 additions and 0 deletions
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6
tools/testing/selftests/vm/hugepage-mremap.c
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@ -178,6 +178,12 @@ int main(int argc, char *argv[])
munmap(addr, length);
addr = mremap(addr, length, length, 0);
if (addr != MAP_FAILED) {
printf("mremap: Expected failure, but call succeeded\n");
exit(1);
}
close(fd);
unlink(argv[argc-1]);