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Date: Mon, 26 Sep 2022 12:11:21 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Peter Collingbourne <pcc@...gle.com>, Vlastimil Babka <vbabka@...e.cz> Subject: [PATCH 5.15 047/148] kasan: call kasan_malloc() from __kmalloc_*track_caller() From: Peter Collingbourne <pcc@...gle.com> 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@...gle.com> Cc: <stable@...r.kernel.org> # 5.15 Signed-off-by: Vlastimil Babka <vbabka@...e.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- 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);
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