Commit 97deb66e authored by John Hubbard's avatar John Hubbard Committed by Andrew Morton
Browse files

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

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: default avatarJohn Hubbard <jhubbard@nvidia.com>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Tested-by: default avatarMuhammad 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: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 0e14e7e9

tools/testing/selftests/mm/pkey-x86.h

+1 −1
Original line number Diff line number Diff line
@@ -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;