On Tue, Jun 17, 2025 at 7:07 PM Stephen Hemminger <step...@networkplumber.org> wrote: > > On Tue, 17 Jun 2025 11:52:08 +0100 > Marat Khalili <marat.khal...@huawei.com> wrote: > > > This was flagged by undefined behaviour sanitizer: struct > > rte_graph_cluster_stats is declared as `__rte_cache_aligned` but was > > allocated using stdlib realloc which caused misaligned allocation. More > > than one test needs to be executed in series in order to reproduce the > > problem using graph_autotest, e.g: > > > > app/dpdk-test --no-huge --no-pci -m128 graph_autotest graph_autotest > > > > First sanitizer message (similar ones follow): > > > > lib/graph/graph_stats.c:209:13: runtime error: member access within > > misaligned address 0x606000008ea0 for type 'struct > > rte_graph_cluster_stats', which requires 64 byte alignment > > > > To fix the issue replace realloc calls with rte_malloc and rte_realloc > > specifying correct alignment, use rte_free to free the result. > > > > Signed-off-by: Marat Khalili <marat.khal...@huawei.com> > > There is a way to get aligned memory, > > #include <stdlib.h> > > int posix_memalign(void **memptr, size_t alignment, size_t size); > void *aligned_alloc(size_t alignment, size_t size);
There is a need for aligned realloc. I think it is not there in standard libraries. >
