Re: [libmicrohttpd] Two tests failing in master branch

[Christian Grothoff]

Hi Tim,

Your first issue is a memory leak in bash. MHD cannot fix this.

The second issue relates to a libcurl linked against OpenSSL. As the
code works when libcurl links against gnutls, I strongly suspect this is
not an issue with our test but with the libcurl+openssl combination.

I generally recommend using libgnurl, our curl fork which always uses
GnuTLS and avoids the curl kitchen sink (i.e. skips support for imap,
ssh, and a host of other protocols).

Happy hacking!

Christian

On 5/24/19 5:00 PM, Tim Rühsen wrote:
> Hi,
> 
> master branch (at 9da5831ce0fa14605ad15315d3ac6af74d33767c) two tests
> are failing with
> 
> make check LOG_COMPILER="valgrind --trace-children=yes --leak-check=full
> --show-leak-kinds=all"
> 
> 
> From test_quiesce.log:
> 
> ==16263== LEAK SUMMARY:
> ==16263==    definitely lost: 12 bytes in 1 blocks
> 
> ==16263== 12 bytes in 1 blocks are definitely lost in loss record 145 of 868
> ==16263==    at 0x483577F: malloc (vg_replace_malloc.c:299)
> ==16263==    by 0x195E8D: xmalloc (in /bin/bash)
> ==16263==    by 0x18F51A: set_default_locale (in /bin/bash)
> ==16263==    by 0x135EE6: main (in /bin/bash)
> 
> 
> From test_get_response_cleanup.log (curl bug ?):
> 
> ==17245== Command: /usr/bin/curl -s -N -o /dev/null -GET
> http://127.0.0.1:34523/
> ==17245==
> ==17245==
> ==17245== Process terminating with default action of signal 15 (SIGTERM)
> ==17245==    at 0x4B486CF: connect (connect.c:26)
> ==17245==    by 0x48BBC87: ??? (in
> /usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0)
> ==17245==    by 0x48BC763: ??? (in
> /usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0)
> ==17245==    by 0x48AB7C2: ??? (in
> /usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0)
> ==17245==    by 0x48ADE1A: ??? (in
> /usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0)
> ==17245==    by 0x48BF5EE: ??? (in
> /usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0)
> ==17245==    by 0x48C0AA8: curl_multi_perform (in
> /usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0)
> ==17245==    by 0x48B7641: curl_easy_perform (in
> /usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0)
> ==17245==    by 0x11DF2F: ??? (in /usr/bin/curl)
> ==17245==    by 0x11F429: ??? (in /usr/bin/curl)
> ==17245==    by 0x1118C3: ??? (in /usr/bin/curl)
> ==17245==    by 0x4B7C09A: (below main) (libc-start.c:308)
> 
> ==17245== Invalid read of size 8
> ==17245==    at 0x5C625A5: check_free (dlerror.c:188)
> ==17245==    by 0x5C62AB1: free_key_mem (dlerror.c:221)
> ==17245==    by 0x5C62AB1: __dlerror_main_freeres (dlerror.c:239)
> ==17245==    by 0x4CC0B71: __libc_freeres (in
> /lib/x86_64-linux-gnu/libc-2.28.so)
> ==17245==    by 0x482D19E: _vgnU_freeres (vg_preloaded.c:77)
> ==17245==    by 0x48BBC87: ??? (in
> /usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0)
> ==17245==    by 0x48BC763: ??? (in
> /usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0)
> ==17245==    by 0x48AB7C2: ??? (in
> /usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0)
> ==17245==    by 0x48ADE1A: ??? (in
> /usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0)
> ==17245==    by 0x48BF5EE: ??? (in
> /usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0)
> ==17245==    by 0x48C0AA8: curl_multi_perform (in
> /usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0)
> ==17245==    by 0x48B7641: curl_easy_perform (in
> /usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0)
> ==17245==    by 0x11DF2F: ??? (in /usr/bin/curl)
> 
> ==17245==  Address 0x6055578 is 12 bytes after a block of size 12 alloc'd
> ==17245==    at 0x483577F: malloc (vg_replace_malloc.c:299)
> ==17245==    by 0x53E20E8: CRYPTO_zalloc (in
> /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1)
> ==17245==    by 0x53DE32D: ??? (in
> /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1)
> ==17245==    by 0x53BF1F7: ERR_get_state (in
> /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1)
> ==17245==    by 0x53BF348: ERR_clear_error (in
> /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1)
> ==17245==    by 0x53DDA38: ??? (in
> /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1)
> ==17245==    by 0x4B46996: __pthread_once_slow (pthread_once.c:116)
> ==17245==    by 0x5446DE8: CRYPTO_THREAD_run_once (in
> /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1)
> ==17245==    by 0x53DE25A: OPENSSL_init_crypto (in
> /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1)
> ==17245==    by 0x48F10BF: ??? (in
> /usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0)
> ==17245==    by 0x48B71CE: ??? (in
> /usr/lib/x86_64-linux-gnu/libcurl.so.4.5.0)
> ==17245==    by 0x11182E: ??? (in /usr/bin/curl)
> 
> 
> This is on Debian unstable (curl 7.64.0-3).
> 
> Regards, Tim
>

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