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Date: Mon, 29 Jun 2020 11:33:03 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Al Viro <viro@...iv.linux.org.uk>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 4.19 012/131] fix a braino in "sparc32: fix register window handling in genregs32_[gs]et()" From: Al Viro <viro@...iv.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@...iv.linux.org.uk> Signed-off-by: Sasha Levin <sashal@...nel.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, - ®s->y, + ®s->npc, 34 * sizeof(u32), 35 * sizeof(u32)); if (ret || !count) return ret; + ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, + ®s->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
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