On Wed, 12 Sep 2012, Jan Stancek wrote: > 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 <jstan...@redhat.com>
Applied, thanks. Eric
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