Hi Grant,
Finally, I found some time for debugging.
2) Keeping connman in the stack, but changing the mapping from
MAP_PRIVATE
back to MAP_SHARED such that stats_file_setup fails with -EINVAL (due to
being backed by a JFFS2 file system).
Okay, that tells us at least if stats.c is not involved there is no
memory leak elsewhere. That's kind of nice for the rest bad for me ;)
I have run valgrind for a while and also monitoring the memory map of
connman with pmap. I don't know if that's enough or good way trying to
find memory leak. ConnMan run through the whole night with a bit of
background traffic (mail client polling etc) and I couldn't see any
change in the pmap
The first entry looks like this:
22403: ./connmand -n -d src/stats.c
Address Kbytes RSS Dirty Mode Mapping
0040 532 412 0 r-x-- connmand
00685000 36 36 20 rw--- connmand
01325000 132 120 120 rw---[ anon ]
00310500 124 108 0 r-x-- ld-2.13.so
00310521e000 4 4 4 r ld-2.13.so
00310521f000 4 4 4 rw--- ld-2.13.so
00310522 4 4 4 rw---[ anon ]
003105401604 652 0 r-x-- libc-2.13.so
0031055910002048 0 0 - libc-2.13.so
003105791000 16 16 8 r libc-2.13.so
003105795000 4 4 4 rw--- libc-2.13.so
003105796000 24 24 24 rw---[ anon ]
00310580 8 8 0 r-x-- libdl-2.13.so
0031058020002048 0 0 - libdl-2.13.so
003105a02000 4 4 4 r libdl-2.13.so
003105a03000 4 4 4 rw--- libdl-2.13.so
003105c0 92 56 0 r-x-- libpthread-2.13.so
003105c170002044 0 0 - libpthread-2.13.so
003105e16000 4 4 4 r libpthread-2.13.so
003105e17000 4 4 4 rw--- libpthread-2.13.so
003105e18000 16 4 4 rw---[ anon ]
00310640 28 16 0 r-x-- libxtables.so.5.0.0
0031064070002048 0 0 - libxtables.so.5.0.0
003106607000 4 4 4 rw--- libxtables.so.5.0.0
003106c0 28 20 0 r-x-- librt-2.13.so
003106c070002044 0 0 - librt-2.13.so
003106e06000 4 4 4 r librt-2.13.so
003106e07000 4 4 4 rw--- librt-2.13.so
00310740 92 44 0 r-x-- libresolv-2.13.so
0031074170002044 0 0 - libresolv-2.13.so
003107616000 4 4 4 r libresolv-2.13.so
003107617000 4 4 4 rw--- libresolv-2.13.so
003107618000 8 0 0 rw---[ anon ]
003107801048 424 0 r-x-- libglib-2.0.so.0.2600.0
0031079060002044 0 0 - libglib-2.0.so.0.2600.0
003107b05000 4 4 4 rw--- libglib-2.0.so.0.2600.0
003107b06000 4 4 4 rw---[ anon ]
00310840 268 208 0 r-x-- libdbus-1.so.3.5.2
0031084430002044 0 0 - libdbus-1.so.3.5.2
003108642000 4 4 4 r libdbus-1.so.3.5.2
003108643000 4 4 4 rw--- libdbus-1.so.3.5.2
00310b00 16 12 0 r-x-- libcap-ng.so.0.0.0
00310b0040002044 0 0 - libcap-ng.so.0.0.0
00310b203000 4 4 4 r libcap-ng.so.0.0.0
00310b204000 4 4 4 rw--- libcap-ng.so.0.0.0
7f295bebf000 4 4 0 r-x-- iospm.so
7f295bec2044 0 0 - iospm.so
7f295c0bf000 4 4 4 rw--- iospm.so
7f295c0c 24 24 24 rw---[ anon ]
7f295c0e2000 16 16 12 rw-s-
ethernet_002481c57c73_cable.data
7f295c0e6000 28 24 0 r--s- gconv-modules.cache
7f295c0ed000 4 4 4 rw---[ anon ]
7fff6132b000 132 24 24 rw---[ stack ]
7fff613ff000 4 4 0 r-x--[ anon ]
ff60 4 0 0 r-x--[ anon ]
-- -- --
total kB 248202340 320
and the current (14 hours later) one looks like this:
22403: ./connmand -n -d src/stats.c
Address Kbytes RSS Dirty Mode Mapping
0040 532 412 0 r-x-- connmand
00685000 36 36 20 rw--- connmand
01325000 132 120 120 rw---[ anon ]
00310500 124 108 0 r-x-- ld-2.13.so
00310521e000 4 4 4 r ld-2.13.so
00310521f000 4 4 4 rw--- ld-2.13.so
00310522 4 4 4 rw---[ anon ]
003105401604 652 0 r-x--
