The patch titled Subject: kasan: fix memory leak of kasan quarantine has been added to the -mm tree. Its filename is kasan-fix-memory-leak-of-kasan-quarantine.patch
This patch should soon appear at https://ozlabs.org/~akpm/mmots/broken-out/kasan-fix-memory-leak-of-kasan-qua... and later at https://ozlabs.org/~akpm/mmotm/broken-out/kasan-fix-memory-leak-of-kasan-qua...
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------------------------------------------------------ From: Kuan-Ying Lee Kuan-Ying.Lee@mediatek.com Subject: kasan: fix memory leak of kasan quarantine
When cpu is going offline, set q->offline as true and interrupt happened. The interrupt may call the quarantine_put. But quarantine_put do not free the the object. The object will cause memory leak.
Add qlink_free() to free the object.
Link: https://lkml.kernel.org/r/1608207487-30537-2-git-send-email-Kuan-Ying.Lee@me... Fixes: 6c82d45c7f03 (kasan: fix object remaining in offline per-cpu quarantine) Signed-off-by: Kuan-Ying Lee Kuan-Ying.Lee@mediatek.com Cc: Andrey Ryabinin aryabinin@virtuozzo.com Cc: Alexander Potapenko glider@google.com Cc: Dmitry Vyukov dvyukov@google.com Cc: Matthias Brugger matthias.bgg@gmail.com Cc: stable@vger.kernel.org [5.10-] Signed-off-by: Andrew Morton akpm@linux-foundation.org ---
mm/kasan/quarantine.c | 1 + 1 file changed, 1 insertion(+)
--- a/mm/kasan/quarantine.c~kasan-fix-memory-leak-of-kasan-quarantine +++ a/mm/kasan/quarantine.c @@ -191,6 +191,7 @@ void quarantine_put(struct kasan_free_me
q = this_cpu_ptr(&cpu_quarantine); if (q->offline) { + qlink_free(&info->quarantine_link, cache); local_irq_restore(flags); return; } _
Patches currently in -mm which might be from Kuan-Ying.Lee@mediatek.com are
kasan-fix-memory-leak-of-kasan-quarantine.patch