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From Eric Covener <cove...@gmail.com>
Subject 2.4 HEAD: some looping issue with check_headers()
Date Thu, 08 Dec 2016 18:46:01 GMT
I am playing with check_headers() and injecting bad characters, and I
am getting some looping:

#2155 0x000000000048af80 in ap_http_header_filter (f=0x7fffc80061d0,
b=0x7fffc09c2bd8) at http_filters.c:1262
#2156 0x00000000004396d0 in ap_pass_brigade (next=0x7fffc80061d0,
bb=0x7fffc09c2bd8) at util_filter.c:610
#2157 0x00000000004408aa in ap_content_length_filter
(f=0x7fffc8006198, b=0x7fffc09c2bd8) at protocol.c:1776
#2158 0x00000000004396d0 in ap_pass_brigade (next=0x7fffc8006198,
bb=0x7fffc09c2bd8) at util_filter.c:610
#2159 0x00007fffe838daa5 in ap_headers_error_filter (f=0x7fffc09c2948,
in=0x7fffc09c2bd8) at mod_headers.c:917
#2160 0x00000000004396d0 in ap_pass_brigade (next=0x7fffc09c2948,
bb=0x7fffc09c2bd8) at util_filter.c:610
#2161 0x00007fffe6103dfc in session_output_filter (f=0x7fffc09c2910,
in=0x7fffc09c2bd8) at mod_session.c:489
#2162 0x00000000004396d0 in ap_pass_brigade (next=0x7fffc09c2910,
bb=0x7fffc09c2bd8) at util_filter.c:610
#2163 0x0000000000440b5e in ap_old_write_filter (f=0x7fffc09c29e0,
bb=0x7fffc09c2bd8) at protocol.c:1845
#2164 0x00000000004396d0 in ap_pass_brigade (next=0x7fffc09c29e0,
bb=0x7fffc09c2bd8) at util_filter.c:610
#2165 0x00000000004400a7 in end_output_stream (r=0x7fffc8004980) at
protocol.c:1540
#2166 0x000000000044011f in ap_finalize_request_protocol
(r=0x7fffc8004980) at protocol.c:1565
#2167 0x0000000000486612 in ap_send_error_response (r=0x7fffc8004980,
recursive_error=500) at http_protocol.c:1395
#2168 0x0000000000486da8 in ap_die_r (type=500, r=0x7fffc8004980,
recursive_error=500) at http_request.c:224
#2169 0x0000000000486dd4 in ap_die (type=500, r=0x7fffc8004980) at
http_request.c:229
#2170 0x000000000048af80 in ap_http_header_filter (f=0x7fffc80061d0,
b=0x7fffc09c2798) at http_filters.c:1262

This is even after trying to zap the offending header before ap_die.
-- 
Eric Covener
covener@gmail.com

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