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powerpc/pasemi: Add a null pointer check to the pas_setup_mce_regs

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kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful
by checking the pointer validity.

Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20240117091706.153431-1-chentao@kylinos.cn
This commit is contained in:
Kunwu Chan 2024-01-17 17:17:06 +08:00 committed by Madhavan Srinivasan
parent 15f3ce3aa2
commit 9e5c53d75c
1 changed files with 2 additions and 0 deletions
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2
arch/powerpc/platforms/pasemi/setup.c
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@ -165,6 +165,8 @@ static int __init pas_setup_mce_regs(void)
while (dev && reg < MAX_MCE_REGS) {
mce_regs[reg].name = kasprintf(GFP_KERNEL,
"mc%d_mcdebug_errsta", reg);
if (!mce_regs[reg].name)
return -ENOMEM;
mce_regs[reg].addr = pasemi_pci_getcfgaddr(dev, 0x730);
dev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa00a, dev);
reg++;