From: Lu Baolu <baolu.lu@linux.intel.com>
To: Jason Gunthorpe <jgg@ziepe.ca>, Kevin Tian <kevin.tian@intel.com>,
Dan Carpenter <dan.carpenter@linaro.org>
Cc: iommu@lists.linux.dev, linux-kernel@vger.kernel.org,
Lu Baolu <baolu.lu@linux.intel.com>
Subject: [PATCH 1/1] iommufd: Fix error pointer checking
Date: Fri, 12 Jul 2024 10:58:19 +0800 [thread overview]
Message-ID: <20240712025819.63147-1-baolu.lu@linux.intel.com> (raw)
Smatch static checker reported below warning:
drivers/iommu/iommufd/fault.c:131 iommufd_device_get_attach_handle()
warn: 'handle' is an error pointer or valid
Fix it by checking 'handle' with IS_ERR().
Fixes: b7d8833677ba ("iommufd: Fault-capable hwpt attach/detach/replace")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/linux-iommu/8bb4f37a-4514-4dea-aabb-7380be303895@stanley.mountain/
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
---
drivers/iommu/iommufd/fault.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/iommufd/fault.c b/drivers/iommu/iommufd/fault.c
index e6bda84865f0..29f522819759 100644
--- a/drivers/iommu/iommufd/fault.c
+++ b/drivers/iommu/iommufd/fault.c
@@ -128,7 +128,7 @@ iommufd_device_get_attach_handle(struct iommufd_device *idev)
struct iommu_attach_handle *handle;
handle = iommu_attach_handle_get(idev->igroup->group, IOMMU_NO_PASID, 0);
- if (!handle)
+ if (IS_ERR(handle))
return NULL;
return to_iommufd_handle(handle);
--
2.34.1
next reply other threads:[~2024-07-12 3:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-12 2:58 Lu Baolu [this message]
2024-07-12 12:52 ` [PATCH 1/1] iommufd: Fix error pointer checking Jason Gunthorpe
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