From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+86a8ab09a0f655f1ff19@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [net?] general protection fault in generic_hwtstamp_ioctl_lower (2)
Date: Wed, 5 Feb 2025 18:54:13 +0800 [thread overview]
Message-ID: <20250205105414.1916-1-hdanton@sina.com> (raw)
In-Reply-To: <67a230a8.050a0220.d7c5a.00ba.GAE@google.com>
On Tue, 04 Feb 2025 07:22:16 -0800
> syzbot found the following issue on:
>
> HEAD commit: 69e858e0b8b2 Merge tag 'uml-for-linus-6.14-rc1' of git://g..
> git tree: upstream
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=161595f8580000
#syz test upstream master
--- x/net/core/dev_ioctl.c
+++ y/net/core/dev_ioctl.c
@@ -452,6 +452,8 @@ static int generic_hwtstamp_ioctl_lower(
struct ifreq ifrr;
int err;
+ if (!kernel_cfg->ifr)
+ return -ENODEV;
strscpy_pad(ifrr.ifr_name, dev->name, IFNAMSIZ);
ifrr.ifr_ifru = kernel_cfg->ifr->ifr_ifru;
--
next prev parent reply other threads:[~2025-02-05 10:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-04 15:22 syzbot
2025-02-05 10:54 ` Hillf Danton [this message]
2025-02-05 11:14 ` syzbot
2025-02-07 1:56 ` Jakub Kicinski
2025-02-07 10:19 ` Kory Maincent
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