[PATCH v8 01/20] PCI/DPC: Initialize aer_err_info before using it

Bjorn Helgaas
2025-05-22T23:23:46Z

From: Bjorn Helgaas <bhelgaas@google.com>

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/20250520215047.1350603-2-helgaas@kernel.org
---
drivers/pci/pcie/dpc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c
index df42f15c9829..3daaf61c79c9 100644
--- a/drivers/pci/pcie/dpc.c
+++ b/drivers/pci/pcie/dpc.c
@@ -258,7 +258,7 @@ 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);
--
2.43.0