On Wed, Apr 07, 2021 at 04:21:30PM +0800, Hillf Danton wrote:
> On Wed, 7 Apr 2021 07:37:53 Jiri Slaby wrote:
> >
> >Yes, the fix makes sense.
>
> Thanks for taking a look.
>
> >But could you elaborate in the commit log when this happens?
> >I only wonder how real this is. I assume you inject fau
> Can you share the info you know about the syzbot report?
Sorry for the late reply, I don't know the REPORT information of
syzbot because I haven't deployed it.
The attached reproduction program was generated by syz-repro.
As you can see from the repro.cprog, the bug occurred in the case of
fault
On 07. 04. 21, 4:16, Hillf Danton wrote:
Add the error path for registering tty devices and roll back in case of error
in bid to avoid the UAF like the below one reported.
[ cut here ]
refcount_t: underflow; use-after-free.
WARNING: CPU: 1 PID: 8923 at lib/refcount.
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