diff options
author | Peng Hao <peng.hao2@zte.com.cn> | 2018-12-29 14:34:12 +0800 |
---|---|---|
committer | Thomas Gleixner <tglx@linutronix.de> | 2019-01-15 11:41:58 +0100 |
commit | bf7d28c53453ea904584960de55e33e03b9d93b1 (patch) | |
tree | 64d3ba0f78a21c8db434101fb3e826d3b4c0a192 /fs/pnode.c | |
parent | e1812933b17be7814f51b6c310c5d1ced7a9a5f5 (diff) |
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: aad983913d77 ("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
Diffstat (limited to 'fs/pnode.c')
0 files changed, 0 insertions, 0 deletions