https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7266
Michael Mann <mmann78@xxxxxxxxxxxx> changed:
What |Removed |Added
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CC| |mmann78@xxxxxxxxxxxx
--- Comment #10 from Michael Mann <mmann78@xxxxxxxxxxxx> 2012-07-30 12:54:22 PDT ---
(In reply to comment #9)
> Hi,
> If you try to save ERF file in pcapng libwiretap will SIGFPE inside
> pcapng_write_enhanced_packet_block()
> Program received signal SIGFPE, Arithmetic exception.
> 0x00007f54d37d54f4 in pcapng_write_enhanced_packet_block (wdh=0x36055f0,
> phdr=0x7fffab4fc280, pseudo_header=0x7fffab50c3a0, pd=0x7fffab4fc3a0 "",
> err=0x7fffab4fc27c)
> at pcapng.c:3172
> 3172 (phdr->ts.nsecs /
> (1000000000/int_data.time_units_per_second));
> (gdb) print int_data.time_units_per_second
> $1 = 4294967296 ; (1LL << 32)
> (gdb) print 1000000000/int_data.time_units_per_second
> $2 = 0
> (gdb) bt
> #0 0x00007f54d37d54f4 in pcapng_write_enhanced_packet_block (wdh=0x36055f0,
> phdr=0x7fffab4fc280, pseudo_header=0x7fffab50c3a0, pd=0x7fffab4fc3a0 "",
> err=0x7fffab4fc27c)
> at pcapng.c:3172
> #1 0x00007f54d37d5cb0 in pcapng_dump (wdh=0x36055f0, phdr=0x7fffab4fc280,
> pseudo_header=0x7fffab50c3a0, pd=0x7fffab4fc3a0 "", err=0x7fffab4fc27c) at
> pcapng.c:3403
> #2 0x00007f54d37ae0dc in wtap_dump (wdh=0x36055f0, phdr=0x7fffab4fc280,
> pseudo_header=0x7fffab50c3a0, pd=0x7fffab4fc3a0 "", err=0x7fffab4fc27c) at
> file_access.c:1351
> #3 0x0000000000442c32 in save_packet ()
> It can be also reproduced with editcap:
> $ editcap /tmp/64byte-ethernet-udp-4interfaces.erf a.pcap
> Floating point exception
This seems related to bug 7533. It may be "fixed" in that it may not accept
your file, but it won't segfault on the divide by zero error.
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