From: Shengjiu Wang <shengjiu.wang@nxp.com>
Date: Wed, 12 May 2021 10:04:39 +0000 (+0800)
Subject: LF-3548-2: ASoC: fsl_easrc_m2m: Fix issue with double kfree
X-Git-Tag: rel_imx_5.10.35_2.0.0-somdevices.0~87
X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=58f410ca4eab3ffac0a4645b5c48e756d2e98f09;p=linux.git

LF-3548-2: ASoC: fsl_easrc_m2m: Fix issue with double kfree

The pointer need to be NULL after kfree to avoid kernel dummp
in second kfree for same pointer.

[ 9285.401707] Call trace:
[ 9285.404171]  kfree+0x388/0x3fc
[ 9285.407238]  fsl_easrc_ioctl+0xf4/0xf80

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Peng Zhang <peng.zhang_8@nxp.com>
---

diff --git a/sound/soc/fsl/fsl_easrc_m2m.c b/sound/soc/fsl/fsl_easrc_m2m.c
index 8ccdbaf5650e..7a5d6a18dce7 100755
--- a/sound/soc/fsl/fsl_easrc_m2m.c
+++ b/sound/soc/fsl/fsl_easrc_m2m.c
@@ -67,7 +67,7 @@ static int fsl_allocate_dma_buf(struct fsl_easrc_m2m *m2m)
 
 alloc_fail:
 	kfree(input->dma_vaddr);
-
+	input->dma_vaddr = NULL;
 	return -ENOMEM;
 }