linux-kernel - [PATCH 4.17 186/324] RISC-V: Fix PTRACE

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Message-Id: <20180823075005.494264766@linuxfoundation.org>
Date:   Thu, 23 Aug 2018 09:54:12 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jim Wilson <jimw@...ive.com>,
        Palmer Dabbelt <palmer@...ive.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.17 186/324] RISC-V: Fix PTRACE_SETREGSET bug.

4.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jim Wilson <jimw@...ive.com>

[ Upstream commit 1db9b80980d26fe95c942e0bb8bde2ca715029ad ]

In riscv_gpr_set, pass regs instead of &regs to user_regset_copyin to fix
gdb segfault.

Signed-off-by: Jim Wilson <jimw@...ive.com>
Signed-off-by: Palmer Dabbelt <palmer@...ive.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 arch/riscv/kernel/ptrace.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/riscv/kernel/ptrace.c
+++ b/arch/riscv/kernel/ptrace.c
@@ -50,7 +50,7 @@ static int riscv_gpr_set(struct task_str
 	struct pt_regs *regs;
 
 	regs = task_pt_regs(target);
-	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &regs, 0, -1);
+	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, regs, 0, -1);
 	return ret;
 }