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authorH.J. Lu <hjl.tools@gmail.com>2018-07-30 16:14:46 -0700
committerH.J. Lu <hjl.tools@gmail.com>2018-07-30 16:15:38 -0700
commit98864ed0e055583707e37cdb7d41a9cdeac4473b (patch)
treeacf6ed5508969c54b0489b917d40df7e9a79236e /timezone/iso3166.tab
parentc92a00d865638cebcfd13cfe0c3e811f565fe43b (diff)
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x86/CET: Fix property note parser [BZ #23467]
GNU_PROPERTY_X86_FEATURE_1_AND may not be the first property item.  We
need to check each property item until we reach the end of the property
or find GNU_PROPERTY_X86_FEATURE_1_AND.

This patch adds 2 tests.  The first test checks if IBT is enabled and
the second test reads the output from the first test to check if IBT
is is enabled.  The second second test fails if IBT isn't enabled
properly.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

	[BZ #23467]
	* sysdeps/unix/sysv/linux/x86/Makefile (tests): Add
	tst-cet-property-1 and tst-cet-property-2 if CET is enabled.
	(CFLAGS-tst-cet-property-1.o): New.
	(ASFLAGS-tst-cet-property-dep-2.o): Likewise.
	($(objpfx)tst-cet-property-2): Likewise.
	($(objpfx)tst-cet-property-2.out): Likewise.
	* sysdeps/unix/sysv/linux/x86/tst-cet-property-1.c: New file.
	* sysdeps/unix/sysv/linux/x86/tst-cet-property-2.c: Likewise.
	* sysdeps/unix/sysv/linux/x86/tst-cet-property-dep-2.S: Likewise.
	* sysdeps/x86/dl-prop.h (_dl_process_cet_property_note): Parse
	each property item until GNU_PROPERTY_X86_FEATURE_1_AND is found.
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