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From: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>
To: xingwei lee <xrivendell7@gmail.com>
Cc: "syzbot+786b124fe4ce4dc99357@syzkaller.appspotmail.com" 
	<syzbot+786b124fe4ce4dc99357@syzkaller.appspotmail.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"rafael@kernel.org" <rafael@kernel.org>,
	"syzkaller-bugs@googlegroups.com"
	<syzkaller-bugs@googlegroups.com>
Subject: Re: [syzbot] [kernel?] general protection fault in joydev_connect
Date: Thu, 23 Nov 2023 08:55:08 +0000	[thread overview]
Message-ID: <2023112332-award-fanciness-2bcf@gregkh> (raw)
In-Reply-To: <CABOYnLyCRyK4qpS2X8ssA6yxCDtEWR3dSsee2Lm6VCQUyD07VQ@mail.gmail.com>

On Wed, Nov 22, 2023 at 07:55:50PM +0800, xingwei lee wrote:
> Hi. I have reproduced this bug with repro.txt and repro.c below:
> 
> repro.txt
> r0 = openat$uinput(0xffffffffffffff9c, &(0x7f0000000500), 0x802, 0x0)
> ioctl$UI_DEV_SETUP(r0, 0x405c5503, &(0x7f0000000080)={{0x0, 0xffff,
> 0x3}, 'syz0\x00'})
> ioctl$UI_DEV_CREATE(r0, 0x5501) (fail_nth: 51)

You are using fault injection, which, by it's very name, causes faults :)

Can you reproduce it without causing faults in the kernel?  And if so,
can you create a patch to fix this?

thanks,

greg k-h

  reply	other threads:[~2023-11-23  8:55 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-22 11:55 xingwei lee
2023-11-23  8:55 ` gregkh [this message]
2023-11-23  9:32   ` Aleksandr Nogikh
2023-11-23  9:41     ` gregkh
2023-11-23 12:42       ` Aleksandr Nogikh
2023-11-23 12:54         ` gregkh
  -- strict thread matches above, loose matches on Subject: below --
2023-11-22  9:51 syzbot

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