kprovost / libs7comm Goto Github PK
View Code? Open in Web Editor NEWS7 communications protocol library, roughly based on libnodave
License: BSD 2-Clause "Simplified" License
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MEMORY LEAK FOUND AT src/analysis.c
Hello, I found a memory leak in /libs7comm/src/analysis.c
Below are steps followed to reproduce crash
Download latest source code from : /kprovost/libs7comm.git and compiled using ASAN(export CFLAGS="-g -fsanitize=address" CXXFLAGS="-g -fsanitize=address" LDFLAGS="-fsanitize=address" before make)
The problematic code:
void *dev = cotp_open(argv[1], analyze_receive, NULL, protostack);ASAN Output:
==8133==ERROR: AddressSanitizer failed to allocate 0x60042000 (1610883072) bytes of LargeMmapAllocator (errno: 12)
==8133==Process memory map follows:
0x000000400000-0x00000041b000 /root/temp/libs7comm/src/analysis/analyze
0x00000061a000-0x00000061b000 /root/temp/libs7comm/src/analysis/analyze
0x00000061b000-0x00000061f000 /root/temp/libs7comm/src/analysis/analyze
0x00007fff7000-0x00008fff7000
0x00008fff7000-0x02008fff7000
0x02008fff7000-0x10007fff8000
0x600000000000-0x602000000000
0x602000000000-0x602000010000
0x602000010000-0x603000000000
0x603000000000-0x603000010000
0x603000010000-0x604000000000
0x604000000000-0x604000010000
0x604000010000-0x616000000000
0x616000000000-0x616000020000
0x616000020000-0x619000000000
0x619000000000-0x619000020000
0x619000020000-0x621000000000
0x621000000000-0x621000020000
0x621000020000-0x640000000000
0x640000000000-0x640000003000
0x7fca89c00000-0x7fca89d00000
0x7fca89e00000-0x7fca89f00000
0x7fca89f3b000-0x7fca8c28d000
0x7fca8c28d000-0x7fca8c2a3000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x7fca8c2a3000-0x7fca8c4a2000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x7fca8c4a2000-0x7fca8c4a3000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x7fca8c4a3000-0x7fca8c5ab000 /lib/x86_64-linux-gnu/libm-2.23.so
0x7fca8c5ab000-0x7fca8c7aa000 /lib/x86_64-linux-gnu/libm-2.23.so
0x7fca8c7aa000-0x7fca8c7ab000 /lib/x86_64-linux-gnu/libm-2.23.so
0x7fca8c7ab000-0x7fca8c7ac000 /lib/x86_64-linux-gnu/libm-2.23.so
0x7fca8c7ac000-0x7fca8c7af000 /lib/x86_64-linux-gnu/libdl-2.23.so
0x7fca8c7af000-0x7fca8c9ae000 /lib/x86_64-linux-gnu/libdl-2.23.so
0x7fca8c9ae000-0x7fca8c9af000 /lib/x86_64-linux-gnu/libdl-2.23.so
0x7fca8c9af000-0x7fca8c9b0000 /lib/x86_64-linux-gnu/libdl-2.23.so
0x7fca8c9b0000-0x7fca8c9c8000 /lib/x86_64-linux-gnu/libpthread-2.23.so
0x7fca8c9c8000-0x7fca8cbc7000 /lib/x86_64-linux-gnu/libpthread-2.23.so
0x7fca8cbc7000-0x7fca8cbc8000 /lib/x86_64-linux-gnu/libpthread-2.23.so
0x7fca8cbc8000-0x7fca8cbc9000 /lib/x86_64-linux-gnu/libpthread-2.23.so
0x7fca8cbc9000-0x7fca8cbcd000
0x7fca8cbcd000-0x7fca8cd8d000 /lib/x86_64-linux-gnu/libc-2.23.so
0x7fca8cd8d000-0x7fca8cf8d000 /lib/x86_64-linux-gnu/libc-2.23.so
0x7fca8cf8d000-0x7fca8cf91000 /lib/x86_64-linux-gnu/libc-2.23.so
0x7fca8cf91000-0x7fca8cf93000 /lib/x86_64-linux-gnu/libc-2.23.so
0x7fca8cf93000-0x7fca8cf97000
0x7fca8cf97000-0x7fca8cfd5000 /usr/lib/x86_64-linux-gnu/libpcap.so.1.7.4
0x7fca8cfd5000-0x7fca8d1d5000 /usr/lib/x86_64-linux-gnu/libpcap.so.1.7.4
0x7fca8d1d5000-0x7fca8d1d7000 /usr/lib/x86_64-linux-gnu/libpcap.so.1.7.4
0x7fca8d1d7000-0x7fca8d1d8000 /usr/lib/x86_64-linux-gnu/libpcap.so.1.7.4
0x7fca8d1d8000-0x7fca8d1d9000
0x7fca8d1d9000-0x7fca8d2cd000 /usr/lib/x86_64-linux-gnu/libasan.so.2.0.0
0x7fca8d2cd000-0x7fca8d4cd000 /usr/lib/x86_64-linux-gnu/libasan.so.2.0.0
0x7fca8d4cd000-0x7fca8d4d0000 /usr/lib/x86_64-linux-gnu/libasan.so.2.0.0
0x7fca8d4d0000-0x7fca8d4d1000 /usr/lib/x86_64-linux-gnu/libasan.so.2.0.0
0x7fca8d4d1000-0x7fca8e146000
0x7fca8e146000-0x7fca8e16c000 /lib/x86_64-linux-gnu/ld-2.23.so
0x7fca8e31b000-0x7fca8e35a000
0x7fca8e35d000-0x7fca8e36b000
0x7fca8e36b000-0x7fca8e36c000 /lib/x86_64-linux-gnu/ld-2.23.so
0x7fca8e36c000-0x7fca8e36d000 /lib/x86_64-linux-gnu/ld-2.23.so
0x7fca8e36d000-0x7fca8e36e000
0x7ffe78201000-0x7ffe78222000 [stack]
0x7ffe782e0000-0x7ffe782e3000 [vvar]
0x7ffe782e3000-0x7ffe782e5000 [vdso]
0xffffffffff600000-0xffffffffff601000 [vsyscall]
==8133==End of process memory map.
==8133==AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_posix.cc:121 "(("unable to mmap" && 0)) != (0)" (0x0, 0x0)
#0 0x7fca8d279631 (/usr/lib/x86_64-linux-gnu/libasan.so.2+0xa0631)
#1 0x7fca8d27e5e3 in __sanitizer::CheckFailed(char const*, int, char const*, unsigned long long, unsigned long long) (/usr/lib/x86_64-linux-gnu/libasan.so.2+0xa55e3)
#2 0x7fca8d286611 (/usr/lib/x86_64-linux-gnu/libasan.so.2+0xad611)
#3 0x7fca8d1fbc0c (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x22c0c)
#4 0x7fca8d2715d2 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x985d2)
#5 0x7fca8cfb652e (/usr/lib/x86_64-linux-gnu/libpcap.so.0.8+0x1f52e)
#6 0x7fca8cfb5c78 in pcap_fopen_offline_with_tstamp_precision (/usr/lib/x86_64-linux-gnu/libpcap.so.0.8+0x1ec78)
#7 0x7fca8cfb5ddc in pcap_open_offline_with_tstamp_precision (/usr/lib/x86_64-linux-gnu/libpcap.so.0.8+0x1eddc)
#8 0x402604 in pcap__open analysis/pcap.c:34 #9 0x412122 in tpkt_open lib/tpkt.c:80 #10 0x413ae0 in cotp_open lib/cotp.c:188 #11 0x40188b in main analysis/analyze.c:343 #12 0x7fca8cbed82f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f) #13 0x401e38 in _start (/root/temp/libs7comm/src/analysis/analyze+0x401e38)
not profinet
This is not profinet, but S7 which is a TCP/IP protocol.
Profinet is a complex protocol at the same level as IP.
Repo description says "profinet"
See issue #1
The repo still has "Profinet library" in its github description 😉
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