2017-11-29 19:04 GMT+01:00 Silva João <joao.si...@altran.com>: >> I have no idea why this file wants to allocate ~1,7 GB of bss. > > All memory is allocated statically in Ada/SPARK. There is no dynamic memory > allocation except for the usage of libxerces in C/C++.
BSS is statically "allocated" memory. > >> You can work around this problem by redefining Valgrind's load address >> to a higher one. >> It's currently 0x58000000 (check with the SEGMENT OUTPUT from previous >> conversation). > > I didn't find a SEGMENT OUTPUT occurrence in our conversation. Oh, have a look here where segment 3. has been created and listed in the second SHOW_SEGMENTS output. --92903:0: ume mmap_file_fixed_client #1 --92903:0: aspacem <<< SHOW_SEGMENTS: after #1 (19 segments) --92903:0: aspacem 2 segment names in 2 slots --92903:0: aspacem freelist is empty --92903:0: aspacem (0,4,3) /home/AltranUK/jsilva.fs/lib/valgrind/memcheck-amd64-linux --92903:0: aspacem (1,67,1) /u/wh/rel/ifaplrel/pw_fwp_engine.eab --92903:0: aspacem 0: RSVN 0000000000-00003fffff 4194304 ----- SmFixed --92903:0: aspacem 1: file 0000400000-000085efff 4583424 r-x-- d=0xfd00 i=712737 o=0 (1,67) --92903:0: aspacem 2: RSVN 000085f000-0003ffffff 55m ----- SmFixed --92903:0: aspacem 3: 0004000000-0057ffffff 1344m --92903:0: aspacem 4: FILE 0058000000-0058235fff 2318336 r-x-- d=0xfd02 i=2635334 o=0 (0,4) --92903:0: aspacem 5: 0058236000-0058434fff 2093056 --92903:0: aspacem 6: FILE 0058435000-0058437fff 12288 rw--- d=0xfd02 i=2635334 o=2314240 (0,4) --92903:0: aspacem 7: ANON 0058438000-0059e39fff 26m rw--- --92903:0: aspacem 8: 0059e3a000-1001ffffff 64129m --92903:0: aspacem 9: RSVN 1002000000-1002000fff 4096 ----- SmFixed --92903:0: aspacem 10: ANON 1002001000-1002400fff 4194304 rwx-- --92903:0: aspacem 11: 1002401000-1fffffffff 65499m --92903:0: aspacem 12: RSVN 2000000000-7ffc6d8e8fff 130929g ----- SmFixed --92903:0: aspacem 13: ANON 7ffc6d8e9000-7ffc6d90afff 139264 rw--- --92903:0: aspacem 14: RSVN 7ffc6d90b000-7ffc6d972fff 425984 ----- SmFixed --92903:0: aspacem 15: ANON 7ffc6d973000-7ffc6d974fff 8192 r-x-- --92903:0: aspacem 16: RSVN 7ffc6d975000-ffffffffff5fffff 16383e ----- SmFixed --92903:0: aspacem 17: ANON ffffffffff600000-ffffffffff600fff 4096 r-x-- --92903:0: aspacem 18: RSVN ffffffffff601000-ffffffffffffffff 9m ----- SmFixed --92903:0: aspacem >>> --92903:0: ume mmap_file_fixed_client #1 --92903:0: aspacem <<< SHOW_SEGMENTS: after #1 (21 segments) --92903:0: aspacem 2 segment names in 2 slots --92903:0: aspacem freelist is empty --92903:0: aspacem (0,4,3) /home/AltranUK/jsilva.fs/lib/valgrind/memcheck-amd64-linux --92903:0: aspacem (1,67,3) /u/wh/rel/ifaplrel/pw_fwp_engine.eab --92903:0: aspacem 0: RSVN 0000000000-00003fffff 4194304 ----- SmFixed --92903:0: aspacem 1: file 0000400000-000085efff 4583424 r-x-- d=0xfd00 i=712737 o=0 (1,67) --92903:0: aspacem 2: RSVN 000085f000-0000a5dfff 2093056 ----- SmFixed --92903:0: aspacem 3: file 0000a5e000-0000a63fff 24576 rw--- d=0xfd00 i=712737 o=4579328 (1,67) --92903:0: aspacem 4: RSVN 0000a64000-0003ffffff 53m ----- SmFixed --92903:0: aspacem 5: 0004000000-0057ffffff 1344m --92903:0: aspacem 6: FILE 0058000000-0058235fff 2318336 r-x-- d=0xfd02 i=2635334 o=0 (0,4) --92903:0: aspacem 7: 0058236000-0058434fff 2093056 --92903:0: aspacem 8: FILE 0058435000-0058437fff 12288 rw--- d=0xfd02 i=2635334 o=2314240 (0,4) --92903:0: aspacem 9: ANON 0058438000-0059e39fff 26m rw--- --92903:0: aspacem 10: 0059e3a000-1001ffffff 64129m --92903:0: aspacem 11: RSVN 1002000000-1002000fff 4096 ----- SmFixed --92903:0: aspacem 12: ANON 1002001000-1002400fff 4194304 rwx-- --92903:0: aspacem 13: 1002401000-1fffffffff 65499m --92903:0: aspacem 14: RSVN 2000000000-7ffc6d8e8fff 130929g ----- SmFixed --92903:0: aspacem 15: ANON 7ffc6d8e9000-7ffc6d90afff 139264 rw--- --92903:0: aspacem 16: RSVN 7ffc6d90b000-7ffc6d972fff 425984 ----- SmFixed --92903:0: aspacem 17: ANON 7ffc6d973000-7ffc6d974fff 8192 r-x-- --92903:0: aspacem 18: RSVN 7ffc6d975000-ffffffffff5fffff 16383e ----- SmFixed --92903:0: aspacem 19: ANON ffffffffff600000-ffffffffff600fff 4096 r-x-- --92903:0: aspacem 20: RSVN ffffffffff601000-ffffffffffffffff 9m ----- SmFixed --92903:0: aspacem >>> > >> Right before it there is a free address space of ~1344m. You need to >> enlarge this to be big >> enough to accommodate for your large BSS segment. >> Have a look at configure.ac (run ./autogen.sh && ./configure). > > What would be the right keyword to look for? I don't seem to find anything > relevant with keywords: BSS, SEGMENT, etc. Search for 0x58000000, in the corresponding platform section (should be amd64-linux in your case). >> if that works for you, you can submit a patch to have Valgrind's load >> address configurable with configure, for example. >> And also supply a better error message and diagnostics about this >> problem next time. > > OK, I will try to. Awesome! Looking forward to it. 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