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From Cliff Woolley <jwool...@virginia.edu>
Subject match_boyer_moore_horspool() looping on icarus
Date Thu, 23 May 2002 23:39:29 GMT

Root: FYI, Greg Ames gave me the heads up and I've killed this one child
off... it seems to be a relatively odd input that caused the loop, so I
won't back icarus down to the ancient 2.0.18 nor to 2.0.36 for now... I'll
just leave it on 2.0.37-dev and keep a closer eye on it.

For everyone else, here's the backtrace of the looping process:

(gdb) bt
#0  match_boyer_moore_horspool (this_pattern=0x8111cf0,
    s=0x8161dc4 "Mozilla/4.0 (compatible; MSIE 6.0; Windows 98; )",
    slen=58) at apr_strmatch.c:133
#1  0x806a616 in match_headers (r=0x8161048) at mod_setenvif.c:567
#2  0x809e0ac in ap_run_post_read_request (r=0x8161048) at protocol.c:1591
#3  0x809c89e in ap_read_request (conn=0x815a118) at protocol.c:981
#4  0x806ad28 in ap_process_http_connection (c=0x815a118) at
#5  0x8097050 in ap_run_process_connection (c=0x815a118) at
#6  0x80974dc in ap_process_connection (c=0x815a118, csd=0x815a048)
    at connection.c:207
#7  0x80870fa in child_main (child_num_arg=11) at prefork.c:671
#8  0x80872d5 in make_child (s=0x8156670, slot=11) at prefork.c:765
#9  0x80875b7 in perform_idle_server_maintenance (p=0x80d1010) at
#10 0x8087a77 in ap_mpm_run (_pconf=0x80d1010, plog=0x8109010,
    at prefork.c:1093
#11 0x808f207 in main (argc=1, argv=0xbfbffb2c) at main.c:632
#12 0x805e821 in _start ()

(gdb) info locals
s_tmp = 0x8161df7 ")"
p_tmp = 0x8111ce8 "2"
s_end = 0x8161dfe ""
shift = (int *) 0x8111d00
s_next = 0x8161df7 ")"
p_start = 0x8111ce0 "Mozilla/2"
p_end = 0x8111ce8 "2"

I'll look into this a bit more and report back in a while.


   Cliff Woolley
   Charlottesville, VA

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