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[tor-bugs] #27532 [Core Tor/Tor]: Bug: tor_tls_context_new: Assertion dh failed



#27532: Bug: tor_tls_context_new: Assertion dh failed
------------------------------+--------------------------------
     Reporter:  teor          |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: 0.3.5.x-final
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:  macos, tor-openssl
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
------------------------------+--------------------------------
 I get an assertion failure on macOS 10.13:
 {{{
 $ gcc --version
 Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr
 --with-gxx-include-dir=/usr/include/c++/4.2.1
 Apple LLVM version 9.1.0 (clang-902.0.39.2)
 Target: x86_64-apple-darwin17.7.0
 Thread model: posix
 InstalledDir:
 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
 $ brew list --versions | grep openssl
 openssl 1.0.2o_2
 }}}
 (Yes, gcc is an alias for clang on macOS by default.)

 Our macOS CI passes with:
 {{{
 $ gcc --version
 ...
 Target: x86_64-apple-darwin17.4.0
 ...
 $ if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install openssl; fi
 Warning: openssl 1.0.2p is already installed and up-to-date
 To reinstall 1.0.2p, run `brew reinstall openssl`
 }}}
 https://travis-ci.org/teor2345/tor/jobs/425576549#L1132

 Have we broken compatibility with 1.0.2o?

 I've done a `make clean`, so it's probably not my machine.

 Here is the tor log:
 {{{
 $ /Users/base/tor-master/build-c/src/app/tor --ignore-missing-torrc -f
 /Users/base/chutney/net/nodes/000a/torrc --list-fingerprint --orport 1
 --datadirectory /Users/base/chutney/net/nodes/000a
 Sep 06 07:32:14.174 [notice] Tor 0.3.5.0-alpha-dev (git-22e24031452d5785)
 running on Darwin with Libevent 2.1.8-stable, OpenSSL 1.0.2o, Zlib 1.2.11,
 Liblzma 5.2.4, and Libzstd 1.3.5.
 ...
 Sep 06 07:32:14.176 [notice] Configuration file
 "/Users/base/chutney/net/nodes/000a/torrc" not present, using reasonable
 defaults.
 ...
 Sep 06 07:27:13.545 [err] tor_assertion_failed_: Bug:
 ../src/lib/tls/tortls_openssl.c:632: tor_tls_context_new: Assertion dh
 failed; aborting. (on Tor 0.3.5.0-alpha-dev 22e24031452d5785)
 Sep 06 07:27:13.547 [err] Bug: Assertion dh failed in tor_tls_context_new
 at ../src/lib/tls/tortls_openssl.c:632. Stack trace: (on Tor 0.3.5.0
 -alpha-dev 22e24031452d5785)
 Sep 06 07:27:13.547 [err] Bug:     0   tor
 0x000000010be5572c log_backtrace_impl + 76 (on Tor 0.3.5.0-alpha-dev
 22e24031452d5785)
 Sep 06 07:27:13.547 [err] Bug:     1   tor
 0x000000010be45bd8 tor_assertion_failed_ + 392 (on Tor 0.3.5.0-alpha-dev
 22e24031452d5785)
 Sep 06 07:27:13.547 [err] Bug:     2   tor
 0x000000010bd7454e tor_tls_context_new + 4190 (on Tor 0.3.5.0-alpha-dev
 22e24031452d5785)
 Sep 06 07:27:13.547 [err] Bug:     3   tor
 0x000000010bd7050c tor_tls_context_init + 156 (on Tor 0.3.5.0-alpha-dev
 22e24031452d5785)
 Sep 06 07:27:13.547 [err] Bug:     4   tor
 0x000000010bc8742f init_keys + 2191 (on Tor 0.3.5.0-alpha-dev
 22e24031452d5785)
 Sep 06 07:27:13.547 [err] Bug:     5   tor
 0x000000010b8e6da6 tor_run_main + 1734 (on Tor 0.3.5.0-alpha-dev
 22e24031452d5785)
 Sep 06 07:27:13.547 [err] Bug:     6   tor
 0x000000010ba48721 tor_main + 161 (on Tor 0.3.5.0-alpha-dev
 22e24031452d5785)
 Sep 06 07:27:13.547 [err] Bug:     7   tor
 0x000000010b842bdb main + 27 (on Tor 0.3.5.0-alpha-dev 22e24031452d5785)
 Sep 06 07:27:13.547 [err] Bug:     8   libdyld.dylib
 0x00007fff54fbe015 start + 1 (on Tor 0.3.5.0-alpha-dev 22e24031452d5785)
 Sep 06 07:27:13.547 [err] Bug:     9   ???
 0x0000000000000009 0x0 + 9 (on Tor 0.3.5.0-alpha-dev 22e24031452d5785)
 Abort trap: 6
 Exit 134
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27532>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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