[PATCH 4.19 012/131] fix a braino in "sparc32: fix register window handling in genregs32_[gs]et()"

Sasha Levin
2020-06-29T19:30:27Z

From: Al Viro <viro@zeniv.linux.org.uk>

[ Upstream commit 9d964e1b82d8182184153b70174f445ea616f053 ]

lost npc in PTRACE_SETREGSET, breaking PTRACE_SETREGS as well

Fixes: cf51e129b968 "sparc32: fix register window handling in genregs32_[gs]et()"
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/sparc/kernel/ptrace_32.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/arch/sparc/kernel/ptrace_32.c b/arch/sparc/kernel/ptrace_32.c
index 60f7205ebe40d..646dd58169ecb 100644
--- a/arch/sparc/kernel/ptrace_32.c
+++ b/arch/sparc/kernel/ptrace_32.c
@@ -168,12 +168,17 @@ static int genregs32_set(struct task_struct *target,
if (ret || !count)
return ret;
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
- &regs->y,
+ &regs->npc,
34 * sizeof(u32), 35 * sizeof(u32));
if (ret || !count)
return ret;
+ ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+ &regs->y,
+ 35 * sizeof(u32), 36 * sizeof(u32));
+ if (ret || !count)
+ return ret;
return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
- 35 * sizeof(u32), 38 * sizeof(u32));
+ 36 * sizeof(u32), 38 * sizeof(u32));
}

static int fpregs32_get(struct task_struct *target,
--
2.25.1