PCI/DPC: Initialize aer_err_info before using it

[ Upstream commit a424b598e6a6c1e69a2bb801d6fd16e805ab2c38 ]

Previously the struct aer_err_info "info" was allocated on the stack
without being initialized, so it contained junk except for the fields we
explicitly set later.

Initialize "info" at declaration so it starts as all zeros.

Fixes: 8aefa9b0d910 ("PCI/DPC: Print AER status in DPC event handling")
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://patch.msgid.link/20250522232339.1525671-2-helgaas@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c
index a5cec2a4e057d1e7a0d6302fbec52710fddd4f2f..3c3ecb9cf57afb653e16ce5686ac11708195c77b 100644 (file)
--- a/drivers/pci/pcie/dpc.c
+++ b/drivers/pci/pcie/dpc.c
@@ -263,7 +263,7 @@ static int dpc_get_aer_uncorrect_severity(struct pci_dev *dev,
 void dpc_process_error(struct pci_dev *pdev)
 {
        u16 cap = pdev->dpc_cap, status, source, reason, ext_reason;
-       struct aer_err_info info;
+       struct aer_err_info info = {};
 
        pci_read_config_word(pdev, cap + PCI_EXP_DPC_STATUS, &status);
        pci_read_config_word(pdev, cap + PCI_EXP_DPC_SOURCE_ID, &source);