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When libvirt calls virInitialize it creates a thread local for the virErrorPtr storage, and registers a callback to cleanup memory when a thread exits. When libvirt is dlclose()d or otherwise made non-resident, the callback function is removed from memory, but the thread local may still exist and if a thread later exists, it will invoke the callback and SEGV. There may also be other thread locals with callbacks pointing to libvirt code, so it is in general never safe to unload libvirt.so from memory once initialized. To allow dlclose() to succeed, but keep libvirt.so resident in memory, link with '-z nodelete'. This issue was first found with the libvirt CIM provider, but can potentially hit many of the dynamic language bindings which all ultimately involve dlopen() in some way, either on libvirt.so itself, or on the glue code for the binding which in turns links to libvirt * configure.ac, src/Makefile.am: Ensure libvirt.so is linked with -z nodelete * cfg.mk, .gitignore, tests/Makefile.am, tests/shunloadhelper.c, tests/shunloadtest.c: A test case to unload libvirt while a thread is still running.
95 lines
1.3 KiB
Plaintext
95 lines
1.3 KiB
Plaintext
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*.#*#
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*.a
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*.exe
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*.gcda
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*.gcno
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*.gcov
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*.la
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*.lo
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*.o
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*.orig
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*.rej
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*~
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.git
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.git-module-status
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.lvimrc
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.sc-start-sc_*
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/ABOUT-NLS
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/COPYING
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/ChangeLog
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/GNUmakefile
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/INSTALL
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/NEWS
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/aclocal.m4
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/autom4te.cache
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/build-aux
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/build-aux/
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/build/
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/config.cache
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/config.guess
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/config.h
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/config.h.in
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/config.log
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/config.rpath
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/config.status
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/config.sub
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/configure
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/configure.lineno
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/daemon/*_dispatch.h
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/docs/hvsupport.html.in
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/docs/libvirt-qemu-*.xml
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/gnulib/lib/*
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/gnulib/m4/*
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/gnulib/tests/*
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/libtool
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/libvirt-*.tar.gz
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/libvirt-[0-9]*
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/libvirt.pc
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/libvirt.spec
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/ltconfig
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/ltmain.sh
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/m4/*
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/maint.mk
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/mingw32-libvirt.spec
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/mkinstalldirs
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/po/*
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/proxy/
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/python/generator.py.stamp
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/python/libvirt-qemu-export.c
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/python/libvirt-qemu.[ch]
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/python/libvirt_qemu.py
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/sc_*
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/src/hyperv/*.generated.*
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/src/libvirt_iohelper
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/src/locking/qemu-sanlock.conf
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/src/remote/*_client_bodies.h
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/src/remote/*_protocol.[ch]
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/src/rpc/virnetprotocol.[ch]
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/src/util/virkeymaps.h
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/tests/*.log
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/tests/cputest
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/tests/hashtest
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/tests/jsontest
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/tests/networkxml2argvtest
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/tests/nwfilterxml2xmltest
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/tests/openvzutilstest
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/tests/shunloadtest
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/update.log
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Makefile
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Makefile.in
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TAGS
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coverage
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cscope.files
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cscope.out
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results.log
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stamp-h
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stamp-h.in
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stamp-h1
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!/gnulib/lib/Makefile.am
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!/gnulib/tests/Makefile.am
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!/m4/virt-*.m4
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!/po/*.po
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!/po/POTFILES.in
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!/po/libvirt.pot
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