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| author | Anirudh Venkataramanan <anirudh.venkataramanan@intel.com> | 2021-07-28 12:39:10 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-08-18 08:59:10 +0200 |
| commit | bae5b521feaa9ce08d7cf0a60c9c955ca76b2cf1 (patch) | |
| tree | 5e25ca823f886088112960c2cbcaf7d214cd39b8 /drivers/net | |
| parent | 059238c52c61542757889952cf6a368cd0bf79f0 (diff) | |
| download | linux-stable-bae5b521feaa9ce08d7cf0a60c9c955ca76b2cf1.tar.gz linux-stable-bae5b521feaa9ce08d7cf0a60c9c955ca76b2cf1.tar.bz2 linux-stable-bae5b521feaa9ce08d7cf0a60c9c955ca76b2cf1.zip | |
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@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_main.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c index 1567ddd4c5b8..6421e9fd69a2 100644 --- a/drivers/net/ethernet/intel/ice/ice_main.c +++ b/drivers/net/ethernet/intel/ice/ice_main.c @@ -3991,6 +3991,11 @@ 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 */ |