Snort mailing list archives
Re: snort 1.8.4b1 dumping core
From: Kris Kennaway <kris () obsecurity org>
Date: Sun, 3 Feb 2002 22:19:31 -0800
On Mon, Feb 04, 2002 at 12:27:21AM -0500, Martin Roesch wrote:
Hi Kris, Does it core right away or does it take a while?
It takes a while..i.e. it seems to be certain traffic which causes it.
Can you try enabling DEBUG mode (see the BUGS file) and let it run through that? Run snort like this: Snort [optons] > debug.file
I can try that.
You can also try running Snort from inside gdb and see if you can get better information on the backtrace from that, something really weird is happening here.
I rebuilt libc and libpcap with -ggdb and linked snort static; here's the complete backtrace. (gdb) bt #0 pcap_read (p=0x0, cnt=134884155, callback=0x875bac0, user=0xc <Address 0xc out of bounds>) at /usr/src/lib/libpcap/../../contrib/libpcap/pcap-bpf.c:121 #1 0x807f430 in pcap_loop (p=0x8130000, cnt=-1, callback=0x875bac0, user=0x0) at /usr/src/lib/libpcap/../../contrib/libpcap/pcap.c:79 #2 0x804a181 in InterfaceThread (arg=0x0) at snort.c:1675 #3 0x80488a1 in main (argc=10, argv=0xbfbff7b8) at snort.c:478 (gdb) list /usr/src/lib/libpcap/../../contrib/libpcap/pcap-bpf.c:121 116 */ 117 #define bhp ((struct bpf_hdr *)bp) 118 ep = bp + cc; 119 while (bp < ep) { 120 register int caplen, hdrlen; 121 caplen = bhp->bh_caplen; 122 hdrlen = bhp->bh_hdrlen; 123 /* 124 * XXX A bpf_hdr matches a pcap_pkthdr. 125 */ (gdb) print bp $1 = (u_char *) 0x169c084 <Address 0x169c084 out of bounds> (gdb) list /usr/src/lib/libpcap/../../contrib/libpcap/pcap.c:79 74 /* 75 * XXX keep reading until we get something 76 * (or an error occurs) 77 */ 78 do { 79 n = pcap_read(p, cnt, callback, user); 80 } while (n == 0); 81 } 82 if (n <= 0) 83 return (n); Kris
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Current thread:
- snort 1.8.4b1 dumping core Kris Kennaway (Feb 02)
- Re: snort 1.8.4b1 dumping core Martin Roesch (Feb 02)
- Re: snort 1.8.4b1 dumping core Kris Kennaway (Feb 02)
- Re: snort 1.8.4b1 dumping core Martin Roesch (Feb 02)
- Re: snort 1.8.4b1 dumping core Kris Kennaway (Feb 02)
- Re: snort 1.8.4b1 dumping core Fyodor (Feb 02)
- Re: snort 1.8.4b1 dumping core Martin Roesch (Feb 03)
- Re: snort 1.8.4b1 dumping core Kris Kennaway (Feb 03)
- Re: snort 1.8.4b1 dumping core Martin Roesch (Feb 03)
- Re: snort 1.8.4b1 dumping core Kris Kennaway (Feb 03)
- Re: snort 1.8.4b1 dumping core Fyodor (Feb 04)
- Re: snort 1.8.4b1 dumping core Kris Kennaway (Feb 15)
- Re: snort 1.8.4b1 dumping core Martin Roesch (Feb 15)
- Re: snort 1.8.4b1 dumping core Kris Kennaway (Feb 15)
- Re: snort 1.8.4b1 dumping core Martin Roesch (Feb 15)
- Re: snort 1.8.4b1 dumping core Kris Kennaway (Feb 02)
- Re: snort 1.8.4b1 dumping core Martin Roesch (Feb 02)