From 0a27bdb14b028fed30a10cec2f945c38cb5ca4fa Mon Sep 17 00:00:00 2001 From: Vernon Yang Date: Fri, 5 Sep 2025 02:25:27 +0800 Subject: [PATCH] PCI/AER: Fix NULL pointer access by aer_info The kzalloc(GFP_KERNEL) may return NULL, so all accesses to aer_info->xxx will result in kernel panic. Fix it. Signed-off-by: Vernon Yang Signed-off-by: Bjorn Helgaas Link: https://patch.msgid.link/20250904182527.67371-1-vernon2gm@gmail.com --- drivers/pci/pcie/aer.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index 62c74b5f99ae..cd0f0b17f097 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -393,6 +393,10 @@ void pci_aer_init(struct pci_dev *dev) return; dev->aer_info = kzalloc(sizeof(*dev->aer_info), GFP_KERNEL); + if (!dev->aer_info) { + dev->aer_cap = 0; + return; + } ratelimit_state_init(&dev->aer_info->correctable_ratelimit, DEFAULT_RATELIMIT_INTERVAL, DEFAULT_RATELIMIT_BURST); -- 2.47.3