A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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iommu: arm-smmu: Fix domain logger use-after-free

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smmu_domain logger is freed as part of error handling in
arm_smmu_init_domain_context.  But smmu_domain->logger is still non null.
This cause smmu_domain->logger to be accessed during domain free.  Fix
this.

Fixes: f1746fc8a009 ("iommu: qti: Track iommu domains")
Change-Id: I82a7f9121b78ca9338d202694dbc0a98150f0c92
Signed-off-by: Prakash Gupta <guptap@codeaurora.org>
This commit is contained in:
Prakash Gupta 2020-02-11 16:26:47 +05:30 • committed by Gerrit - the friendly Code Review server
commit 841fe8d573
1 changed files with 1 additions and 0 deletions
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drivers/iommu/arm-smmu.c
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@ -2102,6 +2102,7 @@ out_clear_smmu:
smmu_domain->smmu = NULL;
out_logger:
iommu_logger_unregister(smmu_domain->logger);
smmu_domain->logger = NULL;
out_unlock:
mutex_unlock(&smmu_domain->init_mutex);
return ret;