2
0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-16 17:23:55 +08:00

HID: amd_sfh: Fix potential NULL pointer dereference

devm_add_action_or_reset() can suddenly invoke amd_mp2_pci_remove() at
registration that will cause NULL pointer dereference since
corresponding data is not initialized yet. The patch moves
initialization of data before devm_add_action_or_reset().

Found by Linux Driver Verification project (linuxtesting.org).

[jkosina@suse.cz: rebase]
Signed-off-by: Evgeny Novikov <novikov@ispras.ru>
Acked-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Evgeny Novikov 2021-06-01 19:38:01 +03:00 committed by Jiri Kosina
parent 0c8fbaa553
commit d46ef750ed

View File

@ -251,6 +251,10 @@ static int amd_mp2_pci_probe(struct pci_dev *pdev, const struct pci_device_id *i
return rc;
}
rc = amd_sfh_hid_client_init(privdata);
if (rc)
return rc;
privdata->cl_data = devm_kzalloc(&pdev->dev, sizeof(struct amdtp_cl_data), GFP_KERNEL);
if (!privdata->cl_data)
return -ENOMEM;
@ -261,7 +265,7 @@ static int amd_mp2_pci_probe(struct pci_dev *pdev, const struct pci_device_id *i
mp2_select_ops(privdata);
return amd_sfh_hid_client_init(privdata);
return 0;
}
static int __maybe_unused amd_mp2_pci_resume(struct device *dev)