linux-kernel - [PATCH 01/13] ptrace: Use regset

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <8dbfdc77d4fac81a113ae2572ff9d01d9f155bfb.1591344965.git.greentime.hu@sifive.com>
Date:   Fri, 12 Jun 2020 15:09:50 +0800
From:   Greentime Hu <greentime.hu@...ive.com>
To:     greentime.hu@...ive.com, oleg@...hat.com, guoren@...ux.alibaba.com,
        vincent.chen@...ive.com, paul.walmsley@...ive.com,
        palmerdabbelt@...gle.com, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 01/13] ptrace: Use regset_size() for dynamic regset

This patch uses regset_size() instead of using regset->n and regset->size
directly. In this case, it will call the get_size() ported by arch
dynamically to support dynamic regset size case.

Signed-off-by: Greentime Hu <greentime.hu@...ive.com>
Acked-by: Oleg Nesterov <oleg@...hat.com>
---
 kernel/ptrace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 43d6179508d6..946b2c4ec4fa 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -888,7 +888,7 @@ static int ptrace_regset(struct task_struct *task, int req, unsigned int type,
 
 	regset_no = regset - view->regsets;
 	kiov->iov_len = min(kiov->iov_len,
-			    (__kernel_size_t) (regset->n * regset->size));
+			    (__kernel_size_t) regset_size(task, regset));
 
 	if (req == PTRACE_GETREGSET)
 		return copy_regset_to_user(task, view, regset_no, 0,
-- 
2.27.0