[Snort-users] Snort ver 1.8.4-beta2 gives bus error.....

Chris Green cmg at ...671...
Tue Feb 26 04:58:09 EST 2002

"PAD HOSMANE" <phosmane at ...4618...> writes:

> Hi,
>   I compiled snort 1.8.4-beta2 on HP-UX 11.00 (with GCC 3.0.1). I ran
> configure with follwoing options

Ok, thanks for trying to compile ( and rereporting your bug, I had
meant to ask about it earlier ).  I don't have experience with solving
alignment problems but the only way I can think to solve it right now
(and ones like it) is to create a union thats the size of the full
type and assign both fields directly into it.

What's happening is snort is trying to copy a u_int8_t into a field
that's 4 bits long.

Hrm is this HP-UX little endian or big endian?  I assume big but I
would have thought it failed on the stream_pkt->iph->ip_hlen
assignment instead.

stream_pkt->iph->ip_ver = stream_pkt->iph->ip_ver & 0x4

> #0  0x7c46c in InitStream4Pkt () at spp_stream4.c:2916
> 2916        stream_pkt->iph->ip_ver   = 0x4;
> (gdb) where
> #0  0x7c46c in InitStream4Pkt () at spp_stream4.c:2916
> #1  0x75438 in Stream4Init (args=0x40058d00 "detect_scans") at
> spp_stream4.c:587
> #2  0x29fc0 in ParsePreprocessor (rule=0x7f7f0f38 "preprocessor stream4:
> detect_scans") at rules.c:1327
> #3  0x28cfc in ParseRule (rule_file=0x7f7d9d30, prule=0x7f7f0a30
> "preprocessor stream4: detect_scans", inclevel=0) at rules.c:539
> #4  0x28388 in ParseRulesFile (file=0x400349a4 "/etc/snort.conf",
> inclevel=0) at rules.c:198
> #5  0x1bc64 in ReadConfFile () at snort.c:3316
> #6  0x14b98 in main (argc=5, argv=0x7f7f0764) at snort.c:189
> Any help is greatly appreciated.
> Thanks
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Chris Green <cmg at ...671...>
A good pun is its own reword.

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