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selftests/mm: fix a "possibly uninitialized" warning in pkey-x86.h

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This fixes a real bug, too, because xstate_size()  was assuming that
the stack variable xstate_size was initialized to zero. That's not
guaranteed nor even especially likely.

Link: https://lkml.kernel.org/r/20230606071637.267103-8-jhubbard@nvidia.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Tested-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
John Hubbard 2023-06-06 00:16:33 -07:00 committed by Andrew Morton
parent 0e14e7e9f1
commit 97deb66ed4
1 changed files with 1 additions and 1 deletions
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2
tools/testing/selftests/mm/pkey-x86.h
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@ -132,7 +132,7 @@ int pkey_reg_xstate_offset(void)
unsigned int ecx;
unsigned int edx;
int xstate_offset;
int xstate_size;
int xstate_size = 0;
unsigned long XSTATE_CPUID = 0xd;
int leaf;