6.17-stable review patch. If anyone has any objections, please let me know.
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From: Vernon Yang yanglincheng@kylinos.cn
[ Upstream commit 0a27bdb14b028fed30a10cec2f945c38cb5ca4fa ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- 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 9d23294ceb2f6..3dba9c0c6ae11 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -383,6 +383,10 @@ 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);