The patch titled
Subject: selftest/vm: test that mremap fails on non-existent vma
has been added to the -mm tree. Its filename is
selftest-vm-test-that-mremap-fails-on-non-existent-vma.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/selftest-vm-test-that-mremap-fails-on-non-existent-vma.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/selftest-vm-test-that-mremap-fails-on-non-existent-vma.patch
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------------------------------------------------------
From: Niels Dossche <dossche.niels@xxxxxxxxx>
Subject: selftest/vm: test that mremap fails on non-existent vma
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@xxxxxxxxx
Signed-off-by: Niels Dossche <dossche.niels@xxxxxxxxx>
Cc: Mina Almasry <almasrymina@xxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/vm/hugepage-mremap.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/tools/testing/selftests/vm/hugepage-mremap.c~selftest-vm-test-that-mremap-fails-on-non-existent-vma
+++ a/tools/testing/selftests/vm/hugepage-mremap.c
@@ -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]);
_
Patches currently in -mm which might be from dossche.niels@xxxxxxxxx are
mm-mremap-fix-sign-for-efault-error-return-value.patch
selftest-vm-test-that-mremap-fails-on-non-existent-vma.patch
