This is a note to let you know that I've just added the patch titled
ice: Prevent probing virtual functions
to the 5.13-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ice-prevent-probing-virtual-functions.patch
and it can be found in the queue-5.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit d998c46420ba2ac2382e0dc13ba8bb88b53024d6
Author: Anirudh Venkataramanan <anirudh.venkataramanan@xxxxxxxxx>
Date: Wed Jul 28 12:39:10 2021 -0700
ice: Prevent probing virtual functions
[ Upstream commit 50ac7479846053ca8054be833c1594e64de496bb ]
The userspace utility "driverctl" can be used to change/override the
system's default driver choices. This is useful in some situations
(buggy driver, old driver missing a device ID, trying a workaround,
etc.) where the user needs to load a different driver.
However, this is also prone to user error, where a driver is mapped
to a device it's not designed to drive. For example, if the ice driver
is mapped to driver iavf devices, the ice driver crashes.
Add a check to return an error if the ice driver is being used to
probe a virtual function.
Fixes: 837f08fdecbe ("ice: Add basic driver framework for Intel(R) E800 Series")
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@xxxxxxxxx>
Tested-by: Gurucharan G <gurucharanx.g@xxxxxxxxx>
Tested-by: Konrad Jankowski <konrad0.jankowski@xxxxxxxxx>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 0eb2307325d3..6a72a3b93037 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -4014,6 +4014,11 @@ ice_probe(struct pci_dev *pdev, const struct pci_device_id __always_unused *ent)
struct ice_hw *hw;
int i, err;
+ if (pdev->is_virtfn) {
+ dev_err(dev, "can't probe a virtual function\n");
+ return -EINVAL;
+ }
+
/* this driver uses devres, see
* Documentation/driver-api/driver-model/devres.rst
*/
