Re: [PATCH] ieframe: Clear a being invalidated history entry.

[Jacek Caban]

Hi Dmitry,

On 1/24/22 15:04, Dmitry Timoshkov wrote:
> update_travellog() in order to clear forward history calls free_travellog_entry() to
> invalidate forward history entries, and when later an entry gets reused entry->stream
> contains a no longer valid pointer.

How does it "get reused"? Note that log buffer is also initially not 
zero-initialized and generally depends on proper bounds checks. 
update_travellog() decrements length when it clears forward history, 
which should prevent us from treating those entries as valid.

Thanks,

Jacek