From: syzbot <syzbot+8a78ecea7ac1a2ea26e5@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [PATCH] null pointer dereference
Date: Sun, 05 Nov 2023 16:20:42 -0800 [thread overview]
Message-ID: <0000000000000e304b060970d3be@google.com> (raw)
In-Reply-To: <000000000000e7b62806096c7d67@google.com>
For archival purposes, forwarding an incoming command email to
linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com.
***
Subject: [PATCH] null pointer dereference
Author: yuran.pereira@hotmail.com
#syz test: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
Signed-off-by: Yuran Pereira <yuran.pereira@hotmail.com>
---
drivers/ptp/ptp_chardev.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/ptp/ptp_chardev.c b/drivers/ptp/ptp_chardev.c
index 282cd7d24077..5b36c34629a0 100644
--- a/drivers/ptp/ptp_chardev.c
+++ b/drivers/ptp/ptp_chardev.c
@@ -173,6 +173,8 @@ long ptp_ioctl(struct posix_clock_context *pccontext, unsigned int cmd,
int enable, err = 0;
tsevq = pccontext->private_clkdata;
+ if (!tsevq)
+ return -EINVAL;
switch (cmd) {
--
2.25.1
next prev parent reply other threads:[~2023-11-06 0:20 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-05 19:10 [syzbot] [net?] general protection fault in ptp_ioctl syzbot
2023-11-06 0:20 ` syzbot [this message]
2023-11-06 0:46 ` [syzbot] test " syzbot
2023-11-06 1:19 ` [PATCH] ptp: fix null ptr deref in ptp_ioctrl Lizhi Xu
2023-11-06 2:12 ` Rahul Rameshbabu
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=0000000000000e304b060970d3be@google.com \
--to=syzbot+8a78ecea7ac1a2ea26e5@syzkaller.appspotmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=syzkaller-bugs@googlegroups.com \
/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).