Unverified Commit a36e9c1a authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!5341 powerpc/lib: Validate size for vector operations 

Merge Pull Request from: @ci-robot 
 
PR sync from: Zhu Wang <wangzhu9@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/VSI7BXKLONZQZ45MCUNHSXOU2C7N6HC2/ 
 
https://gitee.com/src-openeuler/kernel/issues/I96G83 
 
Link:https://gitee.com/openeuler/kernel/pulls/5341

 

Reviewed-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: default avatarZhang Jianhua <chris.zjh@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parents 9169abbb aa41dd78

arch/powerpc/lib/sstep.c

+10 −0
Original line number Diff line number Diff line
@@ -586,6 +586,8 @@ static int do_fp_load(struct instruction_op *op, unsigned long ea, 
	} u;



	nb = GETSIZE(op->type);

	if (nb > sizeof(u))

		return -EINVAL;

	if (!address_ok(regs, ea, nb))

		return -EFAULT;

	rn = op->reg;
@@ -636,6 +638,8 @@ static int do_fp_store(struct instruction_op *op, unsigned long ea, 
	} u;



	nb = GETSIZE(op->type);

	if (nb > sizeof(u))

		return -EINVAL;

	if (!address_ok(regs, ea, nb))

		return -EFAULT;

	rn = op->reg;
@@ -680,6 +684,9 @@ static nokprobe_inline int do_vec_load(int rn, unsigned long ea, 
		u8 b[sizeof(__vector128)];

	} u = {};



	if (size > sizeof(u))

		return -EINVAL;



	if (!address_ok(regs, ea & ~0xfUL, 16))

		return -EFAULT;

	/* align to multiple of size */
@@ -707,6 +714,9 @@ static nokprobe_inline int do_vec_store(int rn, unsigned long ea, 
		u8 b[sizeof(__vector128)];

	} u;



	if (size > sizeof(u))

		return -EINVAL;



	if (!address_ok(regs, ea & ~0xfUL, 16))

		return -EFAULT;

	/* align to multiple of size */