passenger: MacOS High Sierra Apache, Case-insensitive FS causes fork() sanitizer crash.

Help please: https://stackoverflow.com/questions/46628052/phusion-passenger-installation-error-in-macos-10-13-high-sierra

## Issue report
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: buildout/apache2/module_libboost_oxt.a(regex_debug.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: buildout/apache2/module_libboost_oxt.a(tss_null.o) has no symbols
clang -o buildout/apache2/mod_passenger.o  -Isrc/agent -Isrc/cxx_supportlib -Isrc/cxx_supportlib/vendor-copy -Isrc/cxx_supportlib/vendor-modified -fPIC -D_REENTRANT -I/usr/local/include -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wpointer-arith -Wwrite-strings -Wno-long-long -Wno-missing-field-initializers -fvisibility=hidden -DVISIBILITY_ATTRIBUTE_SUPPORTED -g -DHAS_ALLOCA_H -DHAS_SFENCE -DHAS_LFENCE -DPASSENGER_DEBUG -DBOOST_DISABLE_ASSERTS -c src/apache2_module/mod_passenger.c
src/apache2_module/mod_passenger.c:26:10: fatal error: 'httpd.h' file not found
#include <httpd.h>
         ^~~~~~~~~
1 error generated.
rake aborted!
Command failed with status (1): [clang -o buildout/apache2/mod_passenger.o  -Isrc/agent -Isrc/cxx_supportlib -Isrc/cxx_supportlib/vendor-copy -Isrc/cxx_supportlib/vendor-modified -fPIC -D_REENTRANT -I/usr/local/include -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wpointer-arith -Wwrite-strings -Wno-long-long -Wno-missing-field-initializers -fvisibility=hidden -DVISIBILITY_ATTRIBUTE_SUPPORTED -g -DHAS_ALLOCA_H -DHAS_SFENCE -DHAS_LFENCE -DPASSENGER_DEBUG -DBOOST_DISABLE_ASSERTS -c src/apache2_module/mod_passenger.c]
/private/tmp/passenger-20171008-7392-owxt2w/passenger-5.1.8/build/support/cplusplus.rb:53:in `run_compiler'
/private/tmp/passenger-20171008-7392-owxt2w/passenger-5.1.8/build/support/cplusplus.rb:97:in `compile_c'
/private/tmp/passenger-20171008-7392-owxt2w/passenger-5.1.8/build/support/cplusplus.rb:154:in `block in define_c_object_compilation_task'
Tasks: TOP => apache2 => buildout/apache2/mod_passenger.so => buildout/apache2/mod_passenger.o

About this issue

Original URL
State: closed
Created 7 years ago
Comments: 96 (43 by maintainers)

Commits related to this issue

macOS High Sierra: add another hardcoded Apache include directory location Apparently on some systems the Apache header files may be in a different location than on our test systems. Partially close... — committed to phusion/passenger by FooBarWidget 7 years ago
macOS High Sierra: add another hardcoded Apache include directory location Apparently on some systems the Apache header files may be in a different location than on our test systems. Partially close... — committed to phusion/passenger by FooBarWidget 7 years ago

Most upvoted comments

So the current workarounds are:

Use a non-system apache (so it doesn’t have apple’s patches)
Set the OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES env var to the apache launchd plist (requires disabling SIP)
Add PassengerHighPerformance on to your virtualhost if your app can work that way
Use a case-sensitive filesystem (requires a fresh install of macOS)

CamJN on Nov 28, 2017

Ok that confirms my suspicion. Apple introduced a bug into the system Apache in High Sierra, you can review the change yourself if it interests you here:

The original file: https://opensource.apple.com/source/apache/apache-822/httpd/server/request.c.orig.auto.html Apple’s modified file: https://opensource.apple.com/source/apache/apache-822/httpd/server/request.c.auto.html

Particularly, they call CFLocaleCopyCurrent in files_strcmp, which after a long call tree loads the Obj-C runtime (something Core Foundation is not supposed to do).

What’s interesting to me is that when an older Passenger is loaded this does not occur, and presumably this also doesn’t occur when mod_passenger is not loaded at all (maybe someone could check that case). Meaning that this files_strcmp function is triggered because mod_passenger is loaded.

I’ll poke around to see if I can find a way to avoid triggering the bug.

CamJN on Nov 28, 2017

@NDuggan ah, no that’s fine, I thought you were also testing with a static site, but actually using Passenger is an even better test 😃

OnixGH on Nov 14, 2017

@CamJN Using apachectl and using smart spawning. Disabling smart spawning didn’t change anything.

@NDuggan See https://www.phusionpassenger.com/library/indepth/ruby/spawn_methods/.

wulffeld on Nov 13, 2017