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From Micha Lenk <>
Subject Segfault on graceful reload with OCSP stapling enabled?
Date Fri, 18 Dec 2015 11:35:39 GMT
Hi all,

I am currently observing a httpd segfault that is triggered on my system 
by every second graceful reload (i.e. SIGUSR1).

Unfotunately I won't be able to trace this down before Monday, so this 
is merely a heads-up for those interested.
Is anybody able to reproduce this behavior?

This is my configuration:

     SSLStaplingCache shmcb:cache/ocsp_cache(128000)
     SSLUseStapling on
     SSLStaplingResponderTimeout 5
     SSLStaplingReturnResponderErrors off

Thanks in advance for any helpful comments...


BTW: The backtrace looks like this (however, please note that this is a 
patched http 2.4.16, so line numbers might be off a bit):

(gdb) bt full
#0  0x7d50537b in ?? ()
No symbol table info available.
#1  0x0829af5c in find_entry (ht=0x88e7f68, key=0xffffcfc0, klen=20, 
val=0x0) at tables/apr_hash.c:294
         hep = <optimized out>
         he = <optimized out>
         hash = <optimized out>
#2  0x0829b04b in apr_hash_get (ht=0x88e7f68, key=0xffffcfc0, klen=20) 
at tables/apr_hash.c:367
         he = <optimized out>
#3  0x0818f059 in ssl_stapling_init_cert (s=0x8602c78, p=0x84cf0a8, 
ptemp=0x8520e98, mctx=0x89e87a8, x=0x8a29a58) at ssl_util_stapling.c:120
         idx = "\226i\327w\347\200[=\272ς\333\364f\263\232PKKJ"
         cinf = <optimized out>
         issuer = <optimized out>
         cid = <optimized out>
         aia = <optimized out>
#4  0x0818145d in ssl_init_server_ctx (pphrases=<optimized out>, 
sc=<optimized out>, ptemp=<optimized out>, p=<optimized out>, 
s=<optimized out>) at ssl_engine_init.c:1457
No locals.
#5  ssl_init_ConfigureServer (s=0x8602c78, p=0x84cf0a8, ptemp=0x8520e98, 
sc=0x89e8660, pphrases=0x865a0f0) at ssl_engine_init.c:1499
         rv = 0
#6  0x08181b3a in ssl_init_Module (p=0x84cf0a8, plog=0x850e2e0, 
ptemp=0x8520e98, base_server=0x8502fd0) at ssl_engine_init.c:314
         mc = <optimized out>
         sc = <optimized out>
         s = 0x8602c78
         rv = 0
         pphrases = 0x865a0f0
#7  0x080d32c0 in ap_run_post_config (pconf=0x84cf0a8, plog=0x850e2e0, 
ptemp=0x8520e98, s=0x8502fd0) at config.c:103
         n = 2
         rv = 2102416251
#8  0x080b6fa5 in main (argc=139251872, argv=0x864ef88) at main.c:777
         c = 68 'D'
         showcompile = 0
         showdirectives = 0
         confname = 0xffffd42e "/var/lib/usp/hsp/hts/conf/httpd.conf"
         def_server_root = 0xffffd416 "/var/lib/usp/hsp/hts"
         temp_error_log = 0x0
         error = <optimized out>
         process = 0x84cd130
         pconf = 0x84cf0a8
         plog = 0x850e2e0
         ptemp = 0x8520e98
         pcommands = 0x84f1130
         opt = 0x84f11d0
         rv = <optimized out>
         opt_arg = 0xffffd455 "SSL"

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