[PATCH] eal: fix file descriptor leakage with unhandled messages

[Burakov, Anatoly]

On 6/28/2023 1:19 PM, Viacheslav Ovsiienko wrote:
> The sendmsg()/recvmsg() API is used to establish communication between
> the DPDK processes. The API supposes inter-process file descriptors
> sending and conversion, the recipient sees the resulting descriptors
> in the received message - the operating systems creates ones in the
> right context.
> 
> The message receiving is performed by EAL in the dedicated thread
> and it might happen the message is received by EAL and not handled
> by addressed PMD or application due to some reasons (timeouts, race
> condition, etc). EAL just dropped unhandled messages causing the
> file descriptor leakage if these ones were presented in the message.
> 
> The patch closes the descriptors (if any) in unhandled messages.
> 
> Fixes: 783b6e54971 ("eal: add synchronous multi-process communication")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
> ---

Acked-by: Anatoly Burakov <anatoly.burakov at intel.com>

-- 
Thanks,
Anatoly