Hello,
I would like to report a bug report on NTOP. NTOP has been very useful
in helping us determine network usage but unfortunately for as long as
we had it, it has been very unstable. We have had several segfaults time
to time and I currently have a cron in place to check if the process is
alive every 5 minutes. This is a snippet of the last segfault:
*** glibc detected *** /usr/bin/ntop: double free or corruption (!prev):
0x00000000019b24e0 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x733b6)[0x36594dba3b6]
/lib64/libc.so.6(cfree+0x6c)[0x36594dbf2dc]
/usr/lib64/libntop-4.1.0.so(cleanup+0xbf0)[0x36595525920]
/lib64/libc.so.6(+0x32b30)[0x36594d79b30]
/lib64/libpthread.so.0(__nanosleep+0x2d)[0x365952fcadd]
/usr/lib64/libntop-4.1.0.so(_ntopSleepMSWhileSameState+0x10d)[0x3659554715d]
/usr/lib64/libntop-4.1.0.so(_ntopSleepWhileSameState+0x12)[0x36595547222]
/usr/lib64/libntop-4.1.0.so(scanFingerprintLoop+0xaa)[0x365955243da]
/lib64/libpthread.so.0(+0x6a3f)[0x365952f4a3f]
/lib64/libc.so.6(clone+0x6d)[0x36594e1a71d]
======= Memory map: ========
00400000-0040f000 r-xp 00000000 08:02 443814
/usr/bin/ntop
0060f000-00610000 r--p 0000f000 08:02 443814
/usr/bin/ntop
00610000-00611000 rw-p 00010000 08:02 443814
/usr/bin/ntop
00611000-0177f000 ---p 00000000 00:00 0
0177f000-01b4d000 rw-p 00000000 00:00 0
[heap]
36584000000-36584021000 rw-p 00000000 00:00 0
36584021000-36588000000 ---p 00000000 00:00 0
36589360000-36589361000 ---p 00000000 00:00 0
36589361000-36589b61000 rw-p 00000000 00:00 0
36589b61000-36589b62000 ---p 00000000 00:00 0
36589b62000-3658a362000 rw-p 00000000 00:00 0
3658a362000-3658a363000 ---p 00000000 00:00 0
3658a363000-3658ab63000 rw-p 00000000 00:00 0
3658b5b9000-3658b5ba000 ---p 00000000 00:00 0
3658b5ba000-3658bdba000 rw-p 00000000 00:00 0
3658bdba000-3658bdbb000 ---p 00000000 00:00 0
3658bdbb000-3658c5bb000 rw-p 00000000 00:00 0
3658c5bb000-3658c5bc000 ---p 00000000 00:00 0
3658ddbf000-3658e5bf000 rw-p 00000000 00:00
0
[11/1811]
3658e600000-3658e998000 rw-s 00000000 00:06 185987856
socket:[185987856]
36590408000-3659041d000 r-xp 00000000 08:02 131482
/lib64/libgcc_s.so.1
3659041d000-3659061c000 ---p 00015000 08:02 131482
/lib64/libgcc_s.so.1
3659061c000-3659061d000 r--p 00014000 08:02 131482
/lib64/libgcc_s.so.1
3659061d000-3659061e000 rw-p 00015000 08:02 131482
/lib64/libgcc_s.so.1
3659061e000-36590620000 r-xp 00000000 08:02 397283
/usr/lib64/libXau.so.6.0.0
36590620000-36590820000 ---p 00002000 08:02 397283
/usr/lib64/libXau.so.6.0.0
36590820000-36590821000 r--p 00002000 08:02 397283
/usr/lib64/libXau.so.6.0.0
36590821000-36590822000 rw-p 00003000 08:02 397283
/usr/lib64/libXau.so.6.0.0
36590822000-3659083e000 r-xp 00000000 08:02 401788
/usr/lib64/libxcb.so.1.1.0
3659083e000-36590a3d000 ---p 0001c000 08:02 401788
/usr/lib64/libxcb.so.1.1.0
36590a3d000-36590a3e000 r--p 0001b000 08:02 401788
/usr/lib64/libxcb.so.1.1.0
36590a3e000-36590a3f000 rw-p 0001c000 08:02 401788
/usr/lib64/libxcb.so.1.1.0
36590a3f000-36590a67000 r-xp 00000000 08:02 131423
/lib64/libexpat.so.1.5.2
36590a67000-36590c67000 ---p 00028000 08:02 131423
/lib64/libexpat.so.1.5.2
36590c67000-36590c69000 r--p 00028000 08:02 131423
/lib64/libexpat.so.1.5.2
36590c69000-36590c6a000 rw-p 0002a000 08:02 131423
/lib64/libexpat.so.1.5.2
36590c6a000-36590c72000 r-xp 00000000 08:02 157304
/lib64/librt-2.11.3.so
36590c72000-36590e71000 ---p 00008000 08:02 157304
/lib64/librt-2.11.3.so
36590e71000-36590e72000 r--p 00007000 08:02 157304
/lib64/librt-2.11.3.so
36590e72000-36590e73000 rw-p 00008000 08:02 157304
/lib64/librt-2.11.3.so
36590e73000-36590ea8000 r-xp 00000000 08:02 131404
/lib64/libpcre.so.0.0.1
36590ea8000-365910a7000 ---p 00035000 08:02 131404
/lib64/libpcre.so.0.0.1
365910a7000-365910a8000 r--p 00034000 08:02 131404
/lib64/libpcre.so.0.0.1
365910a8000-365910a9000 rw-p 00035000 08:02 131404
/lib64/libpcre.so.0.0.1
365910a9000-365910ad000 r-xp 00000000 08:02 131457
/lib64/libgthread-2.0.so.0.2800.0
365910ad000-365912ac000 ---p 00004000 08:02 131457
/lib64/libgthread-2.0.so.0.2800.0
365912ac000-365912ad000 r--p 00003000 08:02 131457
/lib64/libgthread-2.0.so.0.2800.0
365912ad000-365912ae000 rw-p 00004000 08:02 131457
/lib64/libgthread-2.0.so.0.2800.0
365912ae000-365913eb000 r-xp 00000000 08:02 401883
/usr/lib64/libX11.so.6.3.0
365913eb000-365915eb000 ---p 0013d000 08:02 401883
/usr/lib64/libX11.so.6.3.0
365915eb000-365915ec000 r--p 0013d000 08:02 401883
/usr/lib64/libX11.so.6.3.0
365915ec000-365915f1000 rw-p 0013e000 08:02 401883
/usr/lib64/libX11.so.6.3.0
365915f1000-365915fb000 r-xp 00000000 08:02 421070
/usr/lib64/libXrender.so.1.3.0
365915fb000-365917fa000 ---p 0000a000 08:02 421070
/usr/lib64/libXrender.so.1.3.0
365917fa000-365917fb000 r--p 00009000 08:02 421070
/usr/lib64/libXrender.so.1.3.0
365917fb000-365917fc000 rw-p 0000a000 08:02 421070
/usr/lib64/libXrender.so.1.3.0
365917fc000-36591866000 r-xp 00000000 08:02 443126
/usr/lib64/libpixman-1.so.0.20.0
36591866000-36591a65000 ---p 0006a000 08:02 443126
/usr/lib64/libpixman-1.so.0.20.0
36591a65000-36591a6a000 r--p 00069000 08:02 443126
/usr/lib64/libpixman-1.so.0.20.0
36591a6a000-36591a6b000 rw-p 0006e000 08:02 443126
/usr/lib64/libpixman-1.so.0.20.0
36591a6b000-36591a6e000 r-xp 00000000 08:02 131459
/lib64/libgmodule-2.0.so.0.2800.0
36591a6e000-36591c6d000 ---p 00003000 08:02 131459
/lib64/libgmodule-2.0.so.0.2800.0
36591c6d000-36591c6e000 r--p 00002000 08:02 131459
/lib64/libgmodule-2.0.so.0.2800.0
36591c6e000-36591c6f000 rw-p 00003000 08:02 131459
/lib64/libgmodule-2.0.so.0.2800.0
36591c6f000-36591ca4000 r-xp 00000000 08:02 401868
/usr/lib64/libfontconfig.so.1.4.4
36591ca4000-36591ea4000 ---p 00035000 08:02 401868
/usr/lib64/libfontconfig.so.1.4.4
36591ea4000-36591ea5000 r--p 00035000 08:02 401868
/usr/lib64/libfontconfig.so.1.4.4
36591ea5000-36591ea6000 rw-p 00036000 08:02 401868
/usr/lib64/libfontconfig.so.1.4.4
36591ea6000-36591f2b000 r-xp 00000000 08:02 421639
/usr/lib64/libfreetype.so.6.6.2
Jul 25 16:13:45 nemesis kernel: [5279963.654872] ntop[32386]: segfault
at 2954dc65278 ip 00000295535c36b5 sp 0000038c58159c50 error 4 in
libntop-4.1.0.so[295535aa000+52000]
08:59:04:/etc> rpm -qa ntop
ntop-4.1.0-33.1.x86_64
Any assistance on this matter would be great appreciated.
Best Regards,
Horace
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