DragonFly commits List (threaded) for 2005-08
Re: cvs commit: src/sys/netinet sctp_input.c
:This function is being called from sctp_input() with a critical section
:held, so I doubt you are right. Common code I saw always uses M_NOWAIT
:and treats NULL as a failure.
:Serve - BSD +++ RENT this banner advert +++ ASCII Ribbon /"\
I think Joerg is right... the functionality of the code should
not be changed in cases where we do not completely understand the
context in which the code operates.
In this case the code clearly has a bug... it is calling MALLOC
with M_NOWAIT and not bothering to check for a NULL result. The
original code clearly intends the malloc to succeed, and we have
no idea what to do if it didn't, so that M_NOWAIT should be changed
to M_INTWAIT for now. It's better to do it this way then change
the code paths and have to track down weird bugs n the sctp state
There is a great deal of code inherited from FreeBSD that made
similar assumptions and I would not be surprised if the misuse of
malloc has migrated to other projects. In FreeBSD, M_NOWAIT mallocs
usually do not fail and these cases tend to slide by. But in DragonFly
M_NOWAIT mallocs can easily fail.