x86/mm/mem_encrypt: Fix erroneous sizeof()
Using sizeof(pointer) for determining the size of a memset() only works when the size of the pointer and the size of type to which it points are the same. For pte_t this is only true for 64bit and 32bit-NONPAE. On 32bit PAE systems this is wrong as the pointer size is 4 byte but the PTE entry is 8 bytes. It's actually not a real world issue as this code depends on 64bit, but it's wrong nevertheless. Use sizeof(*p) for correctness sake. Fixes: aad98391 ("x86/mm/encrypt: Simplify sme_populate_pgd() and sme_populate_pgd_large()") Signed-off-by:Peng Hao <peng.hao2@zte.com.cn> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: dave.hansen@linux.intel.com Cc: peterz@infradead.org Cc: luto@kernel.org Link: https://lkml.kernel.org/r/1546065252-97996-1-git-send-email-peng.hao2@zte.com.cn
parent
e1812933
Please register or sign in to comment