[RTEMS Project] #2249: misaligned address exception in cpukit/librpc/src/rpc/get_myaddress.c

[RTEMS trac]

#2249: misaligned address exception in cpukit/librpc/src/rpc/get_myaddress.c
--------------------+---------------------------------------
 Reporter:  johill  |      Owner:
     Type:  defect  |     Status:  new
 Priority:  normal  |  Milestone:  4.11
Component:  cpukit  |    Version:  4.10
 Severity:  normal  |   Keywords:  get_myaddress sun powerpc
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 We see a misaligned address exception in
 cpukit/librpc/src/rpc/get_myaddress.c on nios2 architecture.

 See bug report #1401 describing maybe a fix for the root cause, and that
 might avoid any need for the patch attached here. I am attaching this
 patch in a bug report only to call out attention to the need for a fix for
 #1401.

 Note that we have also found it necessary to place an RTEMS specific patch
 within EPICS for this same #1401 issue.

 I have attached a patch, modelled after the EPICS fix, which isn’t claimed
 to be optimal, minimal, carefully designed, etc but that does appear to
 resolve the issue here.

 The cause appears to be that the individual address data structures copied
 into the user's buffer by the SIOCGIFCONF ioctl are not properly aligned.

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Ticket URL: <http://devel.rtems.org/ticket/2249>
RTEMS Project <http://www.rtems.org/>
RTEMS Project