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| author | Benjamin Berg <benjamin.berg@intel.com> | 2023-02-09 10:00:02 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-11 13:55:22 +0100 |
| commit | 4e774bf6ea50030dee58598c0fc2697a43409965 (patch) | |
| tree | 6e166e6fa12ede068e324ec42deabfc6eae85b2f /arch | |
| parent | 28ebc1164a45db27261ad8440dcbe9238beaf32a (diff) | |
| download | linux-stable-4e774bf6ea50030dee58598c0fc2697a43409965.tar.gz linux-stable-4e774bf6ea50030dee58598c0fc2697a43409965.tar.bz2 linux-stable-4e774bf6ea50030dee58598c0fc2697a43409965.zip | |
um: virtio_uml: free command if adding to virtqueue failed
[ Upstream commit 8a6ca543646f2940832665dbf4e04105262505e2 ]
If adding the command fails (i.e. the virtqueue is broken) then free it
again if the function allocated a new buffer for it.
Fixes: 68f5d3f3b654 ("um: add PCI over virtio emulation driver")
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/um/drivers/virt-pci.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/um/drivers/virt-pci.c b/arch/um/drivers/virt-pci.c index 3ac220dafec4..3b637ad75ec8 100644 --- a/arch/um/drivers/virt-pci.c +++ b/arch/um/drivers/virt-pci.c @@ -132,8 +132,11 @@ static int um_pci_send_cmd(struct um_pci_device *dev, out ? 1 : 0, posted ? cmd : HANDLE_NO_FREE(cmd), GFP_ATOMIC); - if (ret) + if (ret) { + if (posted) + kfree(cmd); goto out; + } if (posted) { virtqueue_kick(dev->cmd_vq); |