From: Axel Lin <axel.lin@gmail.com>
To: linux-kernel <linux-kernel@vger.kernel.org>
Cc: Vinod Koul <vinod.koul@intel.com>,
Dan Williams <dan.j.williams@intel.com>
Subject: [PATCH] dma: intel_mid_dma: fix double free on mid_setup_dma error path
Date: Tue, 02 Nov 2010 09:52:17 +0800 [thread overview]
Message-ID: <1288662737.20990.4.camel@mola> (raw)
We should not call kfree(dma) in mid_setup_dma error path because
the memory is allocated in intel_mid_dma_probe and will be freed
in intel_mid_dma_probe error path if mid_setup_dma return error.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
---
drivers/dma/intel_mid_dma.c | 2 --
1 files changed, 0 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/intel_mid_dma.c b/drivers/dma/intel_mid_dma.c
index 338bc4e..4c55d45 100644
--- a/drivers/dma/intel_mid_dma.c
+++ b/drivers/dma/intel_mid_dma.c
@@ -1075,7 +1075,6 @@ static int mid_setup_dma(struct pci_dev *pdev)
if (NULL == dma->dma_pool) {
pr_err("ERR_MDMA:pci_pool_create failed\n");
err = -ENOMEM;
- kfree(dma);
goto err_dma_pool;
}
@@ -1186,7 +1185,6 @@ err_engine:
free_irq(pdev->irq, dma);
err_irq:
pci_pool_destroy(dma->dma_pool);
- kfree(dma);
err_dma_pool:
pr_err("ERR_MDMA:setup_dma failed: %d\n", err);
return err;
--
1.7.2
reply other threads:[~2010-11-02 1:49 UTC|newest]
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