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PCI/AER: Fix NULL pointer access by aer_info

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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 <yanglincheng@kylinos.cn>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20250904182527.67371-1-vernon2gm@gmail.com
This commit is contained in:
Vernon Yang
2025-09-05 02:25:27 +08:00
committed by Bjorn Helgaas
parent c8ab5e888b
commit 0a27bdb14b
1 changed files with 4 additions and 0 deletions
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4
drivers/pci/pcie/aer.c
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@@ -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);