6.6-stable review patch. If anyone has any objections, please let me know.
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From: Nicolin Chen nicolinc@nvidia.com
commit a05df03a88bc1088be8e9d958f208d6484691e43 upstream.
Reported by smatch: drivers/iommu/iommufd/device.c:1392 iommufd_access_rw() error: uninitialized symbol 'rc'.
Fixes: 8d40205f6093 ("iommufd: Add kAPI toward external drivers for kernel access") Link: https://patch.msgid.link/r/20250227200729.85030-1-nicolinc@nvidia.com Cc: stable@vger.kernel.org Reported-by: kernel test robot lkp@intel.com Reported-by: Dan Carpenter error27@gmail.com Closes: https://lore.kernel.org/r/202502271339.a2nWr9UA-lkp@intel.com/ [nicolinc: can't find an original report but only in "old smatch warnings"] Signed-off-by: Nicolin Chen nicolinc@nvidia.com Signed-off-by: Jason Gunthorpe jgg@nvidia.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iommu/iommufd/device.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/iommu/iommufd/device.c +++ b/drivers/iommu/iommufd/device.c @@ -1076,7 +1076,7 @@ int iommufd_access_rw(struct iommufd_acc struct io_pagetable *iopt; struct iopt_area *area; unsigned long last_iova; - int rc; + int rc = -EINVAL;
if (!length) return -EINVAL;