Hello,
One of our applications for the Zedboard fails with fatal error after the setup
of the network stack in libbsd.
So far I traced it down to the point that the memory allocation for libbsd
overwrites parts of the IMFS of rtems.
When opening device files later this will lead to the crash.
The backtrace looks like this for the bad allocation looks like this:
_Heap_Block_split ../../../../../c/src/../../cpukit/score/src/heap.c:313
0x10dd58
_Heap_Block_allocate_from_begin
../../../../../c/src/../../cpukit/score/src/heap.c:378 0x10dfd6
_Heap_Block_allocate ../../../../../c/src/../../cpukit/score/src/heap.c:465
0x10dfd6
_Heap_Allocate_aligned_with_boundary
../../../../../c/src/../../cpukit/score/src/heapallocate.c:265 0x10e19c
rtems_heap_allocate_aligned_with_boundary
../../../../../c/src/../../cpukit/libcsupport/src/malloc_deferred.c:92
0x10962e
malloc ../../../../../c/src/../../cpukit/libcsupport/src/malloc.c:39
0x10950e
_bsd_malloc ../../rtemsbsd/rtems/rtems-kernel-malloc.c:80 0x170048
[more libbsd]
ifconfig ../../freebsd/sbin/ifconfig/ifconfig.c:1024 0x1724fa
With 1 GiB of RAM, available memory shouldn't be a problem.
At the moment we have configured the system with CONFIGURE_UNLIMITED_OBJECTS
and CONFIGURE_UNIFIED_WORK_AREAS.
Maybe that is not right in this case. Are there any suggestions how to better
configure the system?
I found CONFIGURE_MEMORY_OVERHEAD in the docs, but I am not so sure how to use
it or if it would help.
Best regards,
Jan
Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
German Aerospace Center
Institute for Software Technology | Software for Space Systems and Interactive
Visualization | Lilienthalplatz 7 | 38108 Braunschweig | Germany
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