Wireshark-bugs: [Wireshark-bugs] [Bug 9247] Crash in TCP reassemble when a read filter is applie
Comment # 4
on bug 9247
from Peter Wu
Created attachment 12048 [details]
gdb backtrace full 50591 + compile fix patch 52142 at -O0
git checkout b68e6dcc429d9dc8e0996c98c1e7ab3e38d75144
# Fix compile error with recent glib headers
git show 49648069eb409567fd2239c0a584a0b6c64b39a9 | patch -p1
sed -i CMakeLists.txt -e s/-O2/-O0/
make -DCMAKE_INSTALL_PREFIX=/tmp/wsroot -DENABLE_GTK3=0 -DENABLE_PORTAUDIO=0
-DENABLE_QT5=0 -DENABLE_GEOIP=0 -DENABLE_KERBEROS=0 -DENABLE_SMI=0
~/projects/wireshark
make && ./tshark -r test.pcap -2 -R smtp
# no crash
git checkout d296ebc5254f78f5c18cd066fc886002b900a0a8
make && ./tshark -r ...
# crash:
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff49b9418 in validate_offset (tvb=0x0, abs_offset=0) at
/src/epan/tvbuff.c:188
188 if (G_LIKELY(abs_offset <= tvb->length))
full gdb backtrace is attached (I replaced the full nosiy
/home/peter/.../wireshark path with /src.)
Applying the deadbeef thing gives the following error with GCC 4.8.2:
request for implicit conversion from ‘void *’ to ‘struct tvbuff_t *’ not
permitted in C++ [-Werror=c++-compat]
So, I removed the -Wc++-compat flag from CMakeFiles.txt and it compiles. (I
applied it to two places, one with deadbeef the other with deadbeaf)
This time it crashes again, but with tvbuf=0x0 (tried master and the first
offending commit). Backtrace is still the same with slightly different
addresses but no 0xdeadbeef or 0xdeadbeaf (or its decimal variants).
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