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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug testsuite/29790] [gdb/testsuite] FAIL: gdb.arch/i386-pkru.exp:
 read value after setting value
Date: Tue, 03 Jan 2023 15:41:10 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29790

--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gn=
u.org> ---
The master branch has been updated by Tom de Vries <vries@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=3Dbinutils-gdb.git;h=3Db46632ca1602=
1962c33c2ea32b8104fd258ef0af

commit b46632ca16021962c33c2ea32b8104fd258ef0af
Author: Tom de Vries <tdevries@suse.de>
Date:   Tue Jan 3 16:41:05 2023 +0100

    [gdb/testsuite] Add xfail in gdb.arch/i386-pkru.exp

    On a x86_64-linux machine with pkru register, I run into:
    ...
    (gdb) PASS: gdb.arch/i386-pkru.exp: set pkru value
    info register pkru^M
    pkru           0x12345678          305419896^M
    (gdb) FAIL: gdb.arch/i386-pkru.exp: read value after setting value
    ...

    This is a regression due to kernel commit e84ba47e313d ("x86/fpu: Hook =
up
PKRU
    onto ptrace()").  This is fixed by recent kernel commit 4a804c4f8356
    ("x86/fpu: Allow PKRU to be (once again) written by ptrace.").

    The regression occurs for kernel versions v5.14-rc1 (the first tag
containing
    the regression) up to but excluding v6.2-rc1 (the first tag containing =
the
fix).

    Fix this by adding an xfail for the appropriate kernel versions.

    Tested on x86_64-linux.

    PR testsuite/29790
    Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=3D29790

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