linux-kernel - [PATCH 2/2] LoongArch: Adjust the user_regset

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Date:   Tue, 18 Apr 2023 17:14:06 +0800
From:   Qing Zhang <zhangqing@...ngson.cn>
To:     Huacai Chen <chenhuacai@...nel.org>,
        WANG Xuerui <kernel@...0n.name>
Cc:     Jiaxun Yang <jiaxun.yang@...goat.com>, loongarch@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] LoongArch: Adjust the user_regset_copyin parameter to the correct offset

Ensure that user_watch_state can be set correctly by the user.

Signed-off-by: Qing Zhang <zhangqing@...ngson.cn>
---
 arch/loongarch/kernel/ptrace.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/loongarch/kernel/ptrace.c b/arch/loongarch/kernel/ptrace.c
index 9c3bc1bbf2ff..f5bd7b1430ae 100644
--- a/arch/loongarch/kernel/ptrace.c
+++ b/arch/loongarch/kernel/ptrace.c
@@ -687,7 +687,7 @@ static int hw_break_set(struct task_struct *target,
 			break;
 
 		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &mask,
-					 offset, offset + PTRACE_HBP_ADDR_SZ);
+					 offset, offset + PTRACE_HBP_MASK_SZ);
 		if (ret)
 			return ret;
 
@@ -696,8 +696,8 @@ static int hw_break_set(struct task_struct *target,
 			return ret;
 		offset += PTRACE_HBP_MASK_SZ;
 
-		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &mask,
-					 offset, offset + PTRACE_HBP_MASK_SZ);
+		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &ctrl,
+					 offset, offset + PTRACE_HBP_CTRL_SZ);
 		if (ret)
 			return ret;
 
-- 
2.20.1