[#107008] [Ruby master Bug#18465] Make `IO#write` atomic. — "ioquatix (Samuel Williams)" <noreply@...>
Issue #18465 has been reported by ioquatix (Samuel Williams).
16 messages
2022/01/09
[#107150] [Ruby master Feature#18494] [RFC] ENV["RUBY_GC_..."]= changes GC parameters dynamically — "ko1 (Koichi Sasada)" <noreply@...>
Issue #18494 has been updated by ko1 (Koichi Sasada).
4 messages
2022/01/17
[#107170] Re: [Ruby master Feature#18494] [RFC] ENV["RUBY_GC_..."]= changes GC parameters dynamically
— Eric Wong <normalperson@...>
2022/01/17
> https://bugs.ruby-lang.org/issues/18494
[#107302] [Ruby master Bug#18553] Memory leak on compiling method call with kwargs — "ibylich (Ilya Bylich)" <noreply@...>
Issue #18553 has been reported by ibylich (Ilya Bylich).
4 messages
2022/01/27
[#107346] [Ruby master Misc#18557] DevMeeting-2022-02-17 — "mame (Yusuke Endoh)" <noreply@...>
Issue #18557 has been reported by mame (Yusuke Endoh).
18 messages
2022/01/29
[ruby-core:106972] [Ruby master Bug#12666] Fatal error: glibc detected an invalid stdio handle
From:
"vo.x (Vit Ondruch)" <noreply@...>
Date:
2022-01-05 13:00:09 UTC
List:
ruby-core #106972
Issue #12666 has been updated by vo.x (Vit Ondruch).
Backport changed from 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN to 2.6: REQUIRED, 2.7: REQUIRED, 3.0: REQUIRED
Just FTR, we are hitting this issue on RHEL8 PPC once again, although we were using quite reduced version of this logic.
----------------------------------------
Bug #12666: Fatal error: glibc detected an invalid stdio handle
https://bugs.ruby-lang.org/issues/12666#change-95801
* Author: vo.x (Vit Ondruch)
* Status: Closed
* Priority: Normal
* Assignee: tenderlovemaking (Aaron Patterson)
* ruby -v: ruby 2.3.1p112 (2016-04-26 revision 54768) [powerpc64-linux]
* Backport: 2.6: REQUIRED, 2.7: REQUIRED, 3.0: REQUIRED
----------------------------------------
During build of Ruby for Fedora on PPC64, there is reported following error:
```
Fiddle::TestImport#test_io = Fatal error: glibc detected an invalid stdio handle
uncommon.mk:612: recipe for target 'yes-test-almost' failed
make: *** [yes-test-almost] Aborted (core dumped)
```
and this is the analysis of one of glibc maintainers:
```
libio vtable verification fails because there are two copies of libc.so.6 in the process:
0x00003fffb79413a8 - 0x00003fffb7941f78 is __libc_IO_vtables in /lib64/power8/libc.so.6
0x00003fffb74213c0 - 0x00003fffb7421f90 is __libc_IO_vtables in /lib64/libc.so.6
IO.pipe refers to a vtable from a the first copy, but the fprintf called via libffi comes from the second copy.
The root cause is the Fiddle module loading libc.so.6 with an absolute path:
#0 __dlopen (file=0x20728280 "/lib64/libc.so.6", mode=257) at dlopen.c:75
#1 0x00003fffb748782c in rb_fiddle_handle_initialize (argc=<optimized out>, argv=<optimized out>, self=544821280) at handle.c:179
This comes from test/fiddle/helper.rb:
when /x86_64-linux/
libc_so = "/lib64/libc.so.6"
libm_so = "/lib64/libm.so.6"
when /linux/
libdir = '/lib'
case [0].pack('L!').size
when 4
# 32-bit ruby
libdir = '/lib32' if File.directory? '/lib32'
when 8
# 64-bit ruby
libdir = '/lib64' if File.directory? '/lib64'
end
libc_so = File.join(libdir, "libc.so.6")
libm_so = File.join(libdir, "libm.so.6")
So the good news is that it's just a path. I expect the fix looks like this:
when /linux/
libc_so = "libc.so.6"
libm_so = "libm.so.6"
(This replaces tehe x86_64-linux branch, too.)
```
Please also note that:
```
libio vtable verification is a new security hardening feature in Fedora 25.
```
To workaround this error, I am going to apply following patch to Fedora:
```
From 346e147ba6480839b87046e9a9efab0bf6ed3660 Mon Sep 17 00:00:00 2001
From: Vít Ondruch <[email protected]>
Date: Wed, 10 Aug 2016 17:35:48 +0200
Subject: [PATCH] Rely on ldd to detect glibc.
This is just workaround, since we know we are quite sure this will be successful
on Red Hat platforms.
This workaround rhbz#1361037
---
test/fiddle/helper.rb | 92 ---------------------------------------------------
1 file changed, 92 deletions(-)
diff --git a/test/fiddle/helper.rb b/test/fiddle/helper.rb
index 1da3d93..65148a1 100644
--- a/test/fiddle/helper.rb
+++ b/test/fiddle/helper.rb
@@ -6,98 +6,6 @@
libc_so = libm_so = nil
-case RUBY_PLATFORM
-when /cygwin/
- libc_so = "cygwin1.dll"
- libm_so = "cygwin1.dll"
-when /x86_64-linux/
- libc_so = "/lib64/libc.so.6"
- libm_so = "/lib64/libm.so.6"
-when /linux/
- libdir = '/lib'
- case [0].pack('L!').size
- when 4
- # 32-bit ruby
- libdir = '/lib32' if File.directory? '/lib32'
- when 8
- # 64-bit ruby
- libdir = '/lib64' if File.directory? '/lib64'
- end
- libc_so = File.join(libdir, "libc.so.6")
- libm_so = File.join(libdir, "libm.so.6")
-when /mingw/, /mswin/
- require "rbconfig"
- crtname = RbConfig::CONFIG["RUBY_SO_NAME"][/msvc\w+/] || 'ucrtbase'
- libc_so = libm_so = "#{crtname}.dll"
-when /darwin/
- libc_so = "/usr/lib/libc.dylib"
- libm_so = "/usr/lib/libm.dylib"
-when /kfreebsd/
- libc_so = "/lib/libc.so.0.1"
- libm_so = "/lib/libm.so.1"
-when /gnu/ #GNU/Hurd
- libc_so = "/lib/libc.so.0.3"
- libm_so = "/lib/libm.so.6"
-when /mirbsd/
- libc_so = "/usr/lib/libc.so.41.10"
- libm_so = "/usr/lib/libm.so.7.0"
-when /freebsd/
- libc_so = "/lib/libc.so.7"
- libm_so = "/lib/libm.so.5"
-when /bsd|dragonfly/
- libc_so = "/usr/lib/libc.so"
- libm_so = "/usr/lib/libm.so"
-when /solaris/
- libdir = '/lib'
- case [0].pack('L!').size
- when 4
- # 32-bit ruby
- libdir = '/lib' if File.directory? '/lib'
- when 8
- # 64-bit ruby
- libdir = '/lib/64' if File.directory? '/lib/64'
- end
- libc_so = File.join(libdir, "libc.so")
- libm_so = File.join(libdir, "libm.so")
-when /aix/
- pwd=Dir.pwd
- libc_so = libm_so = "#{pwd}/libaixdltest.so"
- unless File.exist? libc_so
- cobjs=%w!strcpy.o!
- mobjs=%w!floats.o sin.o!
- funcs=%w!sin sinf strcpy strncpy!
- expfile='dltest.exp'
- require 'tmpdir'
- Dir.mktmpdir do |dir|
- begin
- Dir.chdir dir
- %x!/usr/bin/ar x /usr/lib/libc.a #{cobjs.join(' ')}!
- %x!/usr/bin/ar x /usr/lib/libm.a #{mobjs.join(' ')}!
- %x!echo "#{funcs.join("\n")}\n" > #{expfile}!
- require 'rbconfig'
- if RbConfig::CONFIG["GCC"] = 'yes'
- lflag='-Wl,'
- else
- lflag=''
- end
- flags="#{lflag}-bE:#{expfile} #{lflag}-bnoentry -lm"
- %x!#{RbConfig::CONFIG["LDSHARED"]} -o #{libc_so} #{(cobjs+mobjs).join(' ')} #{flags}!
- ensure
- Dir.chdir pwd
- end
- end
- end
-else
- libc_so = ARGV[0] if ARGV[0] && ARGV[0][0] == ?/
- libm_so = ARGV[1] if ARGV[1] && ARGV[1][0] == ?/
- if( !(libc_so && libm_so) )
- $stderr.puts("libc and libm not found: #{$0} <libc> <libm>")
- end
-end
-
-libc_so = nil if !libc_so || (libc_so[0] == ?/ && !File.file?(libc_so))
-libm_so = nil if !libm_so || (libm_so[0] == ?/ && !File.file?(libm_so))
-
if !libc_so || !libm_so
ruby = EnvUtil.rubybin
ldd = `ldd #{ruby}`
--
2.9.2
```
i.e. I am going to disable the custom code for detecting glibc on various platfors and rely just on ldd. My question is what should be the proper fix? Shouldn't be the ldd way the default behavior for Linux?
This issue was originally reported at:
https://bugzilla.redhat.com/show_bug.cgi?id=1361037
---Files--------------------------------
fiddle-path.diff (1.37 KB)
0001-Do-not-use-full-path-to-load-glibc.patch (947 Bytes)
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