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authorJan Stancek <jstancek@redhat.com>2012-09-12 12:02:46 +0200
committerEric B Munson <emunson@mgebm.net>2012-11-06 08:17:53 -0500
commitcd0eeae19135263d33b7d142143a7d7c48e6d1c2 (patch)
treecef80b5205ce184f06b5b2cd541470b34313c0b3 /tests/run_tests.py
parent8ee2462f3f6eea72067641a197214610443576b8 (diff)
downloadlibhugetlbfs-cd0eeae19135263d33b7d142143a7d7c48e6d1c2.tar.gz
fail test only when MAP_FIXED fails on free slices
huge_at_4GB_normal_below, huge_below_4GB_normal_above, straddle_4GB are tests to test corner cases on powerpc. powerpc manages memory using slices: low (0-4G) and high (4G-). These tests are using MAP_FIXED and try to mmap hugepage at various locations. Issue is that kernel or ld.so can be already using region that these tests want to use. At the moment it ends with failure: # ./obj64/straddle_4GB Starting testcase "./obj64/straddle_4GB", pid 25949 Mapping without MAP_FIXED at ff000000...got 0xefffe000000 instead, never mind Mapping with MAP_FIXED at ff000000 FAIL mmap() FIXED failed: Device or resource busy Looking at mappings prior to failed mmap, there are already some libraries mapped to first high slice (0). 10010000-10020000 r--p 00000000 fd:01 2893006 /root/libhugetlbfs/tests/obj64/straddle_4GB 10020000-10030000 rw-p 00010000 fd:01 2893006 /root/libhugetlbfs/tests/obj64/straddle_4GB 8015160000-8015190000 r-xp 00000000 fd:01 1857222 /usr/lib64/ld-2.15.so 8015190000-80151a0000 r--p 00020000 fd:01 1857222 /usr/lib64/ld-2.15.so 80151a0000-80151b0000 rw-p 00030000 fd:01 1857222 /usr/lib64/ld-2.15.so 80151d0000-8015390000 r-xp 00000000 fd:01 1857223 /usr/lib64/libc-2.15.so 8015390000-80153a0000 r--p 001b0000 fd:01 1857223 /usr/lib64/libc-2.15.so 80153a0000-80153c0000 rw-p 001c0000 fd:01 1857223 /usr/lib64/libc-2.15.so 80153c0000-80153e0000 r-xp 00000000 fd:01 1835789 /usr/lib64/libpthread-2.15.so 80153e0000-80153f0000 r--p 00010000 fd:01 1835789 /usr/lib64/libpthread-2.15.so 80153f0000-8015400000 rw-p 00020000 fd:01 1835789 /usr/lib64/libpthread-2.15.so 8015400000-8015410000 r-xp 00000000 fd:01 1842374 /usr/lib64/libdl-2.15.so 8015410000-8015420000 r--p 00000000 fd:01 1842374 /usr/lib64/libdl-2.15.so 8015420000-8015430000 rw-p 00010000 fd:01 1842374 /usr/lib64/libdl-2.15.so 10022e00000-10022e30000 rw-p 00000000 00:00 0 [heap] fff8e650000-fff8e670000 r-xp 00000000 fd:01 1837902 /usr/lib64/libhugetlbfs.so fff8e670000-fff8e680000 r--p 00010000 fd:01 1837902 /usr/lib64/libhugetlbfs.so fff8e680000-fff8e690000 rw-p 00020000 fd:01 1837902 /usr/lib64/libhugetlbfs.so fff8e690000-fff8e6a0000 r-xp 00000000 fd:01 1842940 /usr/lib64/libhugetlbfs_privutils.so fff8e6a0000-fff8e6b0000 r--p 00000000 fd:01 1842940 /usr/lib64/libhugetlbfs_privutils.so fff8e6b0000-fff8e6c0000 rw-p 00010000 fd:01 1842940 /usr/lib64/libhugetlbfs_privutils.so fff8e6c0000-fff8e6d0000 rw-p 00000000 00:00 0 fff8e6d0000-fff8e6f0000 r-xp 00000000 00:00 0 [vdso] fffc7110000-fffc7140000 rw-p 00000000 00:00 0 [stack] This patch checks that slices used by tests are actually free (not mapped). If they are not free and mmap fails, test will PASS as inconclusive. Signed-off-by: Jan Stancek <jstancek@redhat.com> Signed-off-by: Eric B Munson <emunson@mgebm.net>
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