From: "Mickaël Salaün" <mic@digikod.net>
To: linux-kernel@vger.kernel.org
Cc: "Mickaël Salaün" <mic@digikod.net>,
"Jeff Dike" <jdike@addtoit.com>,
"Richard Weinberger" <richard@nod.at>,
"Linus Torvalds" <torvalds@linux-foundation.org>,
user-mode-linux-devel@lists.sourceforge.net,
"Al Viro" <viro@ZenIV.linux.org.uk>
Subject: [PATCH v2] um: Fix pointer cast
Date: Wed, 23 Dec 2015 14:17:07 +0100 [thread overview]
Message-ID: <1450876627-4814-1-git-send-email-mic@digikod.net> (raw)
Fix a pointer cast typo introduced in v4.4-rc5 especially visible for
the i386 subarchitecture where it results in a kernel crash.
Fixes: 8090bfd2bb9a ("um: Fix fpstate handling")
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
---
arch/x86/um/signal.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/um/signal.c b/arch/x86/um/signal.c
index e5f854ce2d72..14fcd01ed992 100644
--- a/arch/x86/um/signal.c
+++ b/arch/x86/um/signal.c
@@ -470,7 +470,7 @@ long sys_sigreturn(void)
struct sigcontext __user *sc = &frame->sc;
int sig_size = (_NSIG_WORDS - 1) * sizeof(unsigned long);
- if (copy_from_user(&set.sig[0], (void *)sc->oldmask, sizeof(set.sig[0])) ||
+ if (copy_from_user(&set.sig[0], &sc->oldmask, sizeof(set.sig[0])) ||
copy_from_user(&set.sig[1], frame->extramask, sig_size))
goto segfault;
--
2.6.4
next reply other threads:[~2015-12-23 13:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-23 13:17 Mickaël Salaün [this message]
2015-12-23 18:39 ` [PATCH v2] um: Fix pointer cast Richard Weinberger
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1450876627-4814-1-git-send-email-mic@digikod.net \
--to=mic@digikod.net \
--cc=jdike@addtoit.com \
--cc=linux-kernel@vger.kernel.org \
--cc=richard@nod.at \
--cc=torvalds@linux-foundation.org \
--cc=user-mode-linux-devel@lists.sourceforge.net \
--cc=viro@ZenIV.linux.org.uk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).