evie/android_kernel_oneplus_msm8998
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soc: qcom: Clear the memory before freeing it up

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It is a case of write after free, this is causing page allocation
failure due to corruption. This is due to freeing up of segments
allocated for venus subsystem, when venus fw loading fail midway.

Change-Id: I0019a05b1d1336dcf361264607597430e5f1625a
Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@codeaurora.org>
This commit is contained in:
Avaneesh Kumar Dwivedi 2017-04-24 21:51:42 +05:30 • committed by Gerrit - the friendly Code Review server
parent c01ba1a5f9
commit b6bd6d1a3c
1 changed files with 2 additions and 2 deletions
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4
drivers/soc/qcom/peripheral-loader.c
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@ -917,13 +917,13 @@ out:
priv->region_start),
VMID_HLOS);
}
if (desc->clear_fw_region && priv->region_start)
pil_clear_segment(desc);
dma_free_attrs(desc->dev, priv->region_size,
priv->region, priv->region_start,
&desc->attrs);
priv->region = NULL;
}
if (desc->clear_fw_region && priv->region_start)
pil_clear_segment(desc);
pil_release_mmap(desc);
}
return ret;