Re: [PATCH v6 01/16] PCI/DPC: Initialize aer_err_info before using it

From: Sathyanarayanan Kuppuswamy
Date: Mon May 19 2025 - 18:42:09 EST


Hi,

On 5/19/25 2:35 PM, Bjorn Helgaas wrote:
From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>

Previously the struct aer_err_info "info" was allocated on the stack

/s/Previously/Currently ?

without being initialized, so it contained junk except for the fields we
explicitly set later.

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

/s/zeroes/zeros

Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx>

Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
---
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..fe7719238456 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 = { 0 };
pci_read_config_word(pdev, cap + PCI_EXP_DPC_STATUS, &status);
pci_read_config_word(pdev, cap + PCI_EXP_DPC_SOURCE_ID, &source);

--
Sathyanarayanan Kuppuswamy
Linux Kernel Developer