Re: “KASAN: null-ptr-deref Write in event_handler” and "KASAN: null-ptr-deref Write in vhci_shutdown_connection" should share the same root cause.

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On Wed, Jan 20, 2021 at 11:22:11AM +0800, 慕冬亮 wrote:
> Dear kernel developers,
> 
> I found that on the syzbot dashboard, “KASAN: null-ptr-deref Write in
> event_handler”[1] and
> "KASAN: null-ptr-deref Write in vhci_shutdown_connection" () should
> share the same root cause.
> 
> 
> The reasons for the above statement:
> 1) the stack trace is the same, and this title difference is due to
> the inline property of "vhci_shutdown_connection";
> 2) their PoCs are the same as each other.
> 
> If you can have any issues with this statement or our information is
> useful to you, please let us know. Thanks very much.
> 
> [1] KASAN: null-ptr-deref Write in event_handler -
> https://syzkaller.appspot.com/bug?id=28cccdd18b4bb8670d077937fb8d4849dca96230
> [2] KASAN: null-ptr-deref Write in vhci_shutdown_connection -
> https://syzkaller.appspot.com/bug?id=c21c07f3d51769405e8efc027bdb927515dcc7d6

Great, care to create a patch for this problem?  That's the best way to
solve these things.

thanks,

greg k-h



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