From ffb3c7a99a15a7644c2fc632d6474a1e4c0c800c Mon Sep 17 00:00:00 2001 From: Justin Maggard Date: Tue, 4 Oct 2016 13:17:58 -0700 Subject: async_pq_val: fix DMA memory leak commit c84750906b4818d4929fbf73a4ae6c113b94f52b upstream. Add missing dmaengine_unmap_put(), so we don't OOM during RAID6 sync. Fixes: 1786b943dad0 ("async_pq_val: convert to dmaengine_unmap_data") Signed-off-by: Justin Maggard Reviewed-by: Dan Williams Signed-off-by: Vinod Koul Signed-off-by: Greg Kroah-Hartman --- crypto/async_tx/async_pq.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/crypto/async_tx/async_pq.c b/crypto/async_tx/async_pq.c index c0748bbd4c08..84f8d4d8b6bc 100644 --- a/crypto/async_tx/async_pq.c +++ b/crypto/async_tx/async_pq.c @@ -368,8 +368,6 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks, dma_set_unmap(tx, unmap); async_tx_submit(chan, tx, submit); - - return tx; } else { struct page *p_src = P(blocks, disks); struct page *q_src = Q(blocks, disks); @@ -424,9 +422,11 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks, submit->cb_param = cb_param_orig; submit->flags = flags_orig; async_tx_sync_epilog(submit); - - return NULL; + tx = NULL; } + dmaengine_unmap_put(unmap); + + return tx; } EXPORT_SYMBOL_GPL(async_syndrome_val); -- cgit v1.2.3