[sctp-dev] RFR [9] 8034181: SIGBUS at Java_sun_nio_ch_SctpChannelImpl_receive0

[Alan Bateman]

On 22/03/2014 08:13, Chris Hegarty wrote:
> The native SCTP implementation assumes that the given byte buffer ( buffer address + position ) is memory aligned. It re-uses the buffer for handling notifications from the SCTP Stack ( as well as for reading data off the socket ). This can result in a SIBGUS on sparc(v9) if the address is not 4 byte aligned [1].
>
> The trivial solution is to copy the SCTP notification into a stack allocated buffer, for handling, if the given address is not 4 byte aligned.
>
> http://cr.openjdk.java.net/~chegar/8034181/webev.00/webrev/
>
It looks like the stack allocated buffer will be out of scope when you 
use it and I assume it would be safer to declare buf at L465 or so.

-Alan.