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* [Bug string/26818] New: aarch64: string tests may run ifunc variants that are not safe
@ 2020-10-30 11:51 nsz at gcc dot gnu.org
2021-01-25 16:16 ` [Bug string/26818] " cvs-commit at gcc dot gnu.org
2021-01-25 17:22 ` nsz at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: nsz at gcc dot gnu.org @ 2020-10-30 11:51 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=26818
Bug ID: 26818
Summary: aarch64: string tests may run ifunc variants that are
not safe
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: string
Assignee: unassigned at sourceware dot org
Reporter: nsz at gcc dot gnu.org
Target Milestone: ---
most aarch64 ifunc variants are set to "usable" in
sysdeps/aarch64/multiarch/ifunc-impl-list.c
but some are not BTI or MTE safe and may fail on a
new system with HWCAP2_BTI or HWCAP2_MTE set.
i believe this only affects glibc internal tests and
benchmarks.
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* [Bug string/26818] aarch64: string tests may run ifunc variants that are not safe
2020-10-30 11:51 [Bug string/26818] New: aarch64: string tests may run ifunc variants that are not safe nsz at gcc dot gnu.org
@ 2021-01-25 16:16 ` cvs-commit at gcc dot gnu.org
2021-01-25 17:22 ` nsz at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-01-25 16:16 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=26818
--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Szabolcs Nagy <nsz@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=04c6a8073d1c9d73c4a88b536aeb803b12fbffdc
commit 04c6a8073d1c9d73c4a88b536aeb803b12fbffdc
Author: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date: Fri Jan 22 16:57:32 2021 +0000
aarch64: Fix the list of tested IFUNC variants [BZ #26818]
Some IFUNC variants are not compatible with BTI and MTE so don't
set them as usable for testing and benchmarking on a BTI or MTE
enabled system.
As far as IFUNC selectors are concerned a system is BTI enabled if
the cpu supports it and glibc was built with BTI branch protection.
Most IFUNC variants are BTI compatible, but thunderx2 memcpy and
memmove use a jump table with indirect jump, without a BTI j.
Fixes bug 26818.
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* [Bug string/26818] aarch64: string tests may run ifunc variants that are not safe
2020-10-30 11:51 [Bug string/26818] New: aarch64: string tests may run ifunc variants that are not safe nsz at gcc dot gnu.org
2021-01-25 16:16 ` [Bug string/26818] " cvs-commit at gcc dot gnu.org
@ 2021-01-25 17:22 ` nsz at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: nsz at gcc dot gnu.org @ 2021-01-25 17:22 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=26818
Szabolcs Nagy <nsz at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|NEW |RESOLVED
Target Milestone|--- |2.33
--- Comment #2 from Szabolcs Nagy <nsz at gcc dot gnu.org> ---
fixed for 2.33
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end of thread, other threads:[~2021-01-25 17:22 UTC | newest]
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2020-10-30 11:51 [Bug string/26818] New: aarch64: string tests may run ifunc variants that are not safe nsz at gcc dot gnu.org
2021-01-25 16:16 ` [Bug string/26818] " cvs-commit at gcc dot gnu.org
2021-01-25 17:22 ` nsz at gcc dot gnu.org
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