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| author |   Sidhartha Kumar <sidhartha.kumar@oracle.com> | 2022-04-21 16:35:49 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2022-04-21 20:01:09 -0700 |
| commit | 9c85a9bae267f6b5e5e374d0d023bbbe9db096d3 (patch) | |
| tree | 793bc512a78e15fcec3dcf884bf386d876db336b /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | mm, hugetlb: allow for "high" userspace addresses (diff) | |
| download | wireguard-linux-9c85a9bae267f6b5e5e374d0d023bbbe9db096d3.tar.xz wireguard-linux-9c85a9bae267f6b5e5e374d0d023bbbe9db096d3.zip | |
selftest/vm: verify mmap addr in mremap_test
Avoid calling mmap with requested addresses that are less than the
system's mmap_min_addr. When run as root, mmap returns EACCES when
trying to map addresses < mmap_min_addr. This is not one of the error
codes for the condition to retry the mmap in the test.
Rather than arbitrarily retrying on EACCES, don't attempt an mmap until
addr > vm.mmap_min_addr.
Add a munmap call after an alignment check as the mappings are retained
after the retry and can reach the vm.max_map_count sysctl.
Link: https://lkml.kernel.org/r/20220420215721.4868-1-sidhartha.kumar@oracle.com
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions