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iommu/arm-smmu-v3: Revert vmaster in the error path

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The error path for err_free_master_domain leaks the vmaster. Move all
the kfrees for vmaster into the goto error section.

Fixes: cfea71aea9 ("iommu/arm-smmu-v3: Put iopf enablement in the domain attach path")
Cc: stable@vger.kernel.org
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Pranjal Shrivastava <praan@google.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Link: https://lore.kernel.org/r/20250711204020.1677884-1-nicolinc@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Nicolin Chen 2025-07-11 13:40:20 -07:00 committed by Will Deacon
parent ec7ca73144
commit 49f42634e8
1 changed files with 4 additions and 3 deletions
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7
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
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@ -2906,8 +2906,8 @@ int arm_smmu_attach_prepare(struct arm_smmu_attach_state *state,
master_domain = kzalloc(sizeof(*master_domain), GFP_KERNEL);
if (!master_domain) {
kfree(state->vmaster);
return -ENOMEM;
ret = -ENOMEM;
goto err_free_vmaster;
}
master_domain->domain = new_domain;
master_domain->master = master;
@ -2941,7 +2941,6 @@ int arm_smmu_attach_prepare(struct arm_smmu_attach_state *state,
!arm_smmu_master_canwbs(master)) {
spin_unlock_irqrestore(&smmu_domain->devices_lock,
flags);
kfree(state->vmaster);
ret = -EINVAL;
goto err_iopf;
}
@ -2967,6 +2966,8 @@ int arm_smmu_attach_prepare(struct arm_smmu_attach_state *state,
arm_smmu_disable_iopf(master, master_domain);
err_free_master_domain:
kfree(master_domain);
err_free_vmaster:
kfree(state->vmaster);
return ret;
}