From: Peter Collingbourne <pcc@xxxxxxxxxx> commit 5373b8a09d6e037ee0587cb5d9fe4cc09077deeb upstream. We were failing to call kasan_malloc() from __kmalloc_*track_caller() which was causing us to sometimes fail to produce KASAN error reports for allocations made using e.g. devm_kcalloc(), as the KASAN poison was not being initialized. Fix it. Signed-off-by: Peter Collingbourne <pcc@xxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> # 5.15 Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- mm/slub.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/mm/slub.c +++ b/mm/slub.c @@ -4920,6 +4920,8 @@ void *__kmalloc_track_caller(size_t size /* Honor the call site pointer we received. */ trace_kmalloc(caller, ret, size, s->size, gfpflags); + ret = kasan_kmalloc(s, ret, size, gfpflags); + return ret; } EXPORT_SYMBOL(__kmalloc_track_caller); @@ -4951,6 +4953,8 @@ void *__kmalloc_node_track_caller(size_t /* Honor the call site pointer we received. */ trace_kmalloc_node(caller, ret, size, s->size, gfpflags, node); + ret = kasan_kmalloc(s, ret, size, gfpflags); + return ret; } EXPORT_SYMBOL(__kmalloc_node_track_caller);
