RFR: JDK-8261791: handleSendFailed in SctpChannelImpl.c potential leaks

[Alan Bateman]

On Tue, 16 Feb 2021 12:26:54 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> In another bug  this question from me  was answered by  Alan Bateman :
> 
> Btw. while adjusting Java_sun_nio_ch_sctp_SctpChannelImpl_receive0 , I started to wonder what happens to the allocated memory in the same file in handleSendFailed ( if ((addressP = malloc(dataLength)) == NULL) ) in early return cases incl. the CHECK_NULL , is there some deallocation missing there too ?
> 
> 
> Yes, the error paths in handleSendFailed should be looked at. If NewDirectByteBuffer or recvmsg fails then addressP needs to be freed. Furthermore, if the NewObject fails and bufferObj != NULL then the memory for the direct buffer will need to be freed too (as JNI NewDirectByteBuffer does not setup a cleaner).
> 
> 
> So I added freeing of the malloced memory to handleSendFailed .
> Please review !
> 
> Thanks, Matthias

The changes looks okay to me. I see Chris has created JDK-8261881 to setup the cleanup.

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Marked as reviewed by alanb (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/2586