PCI: Check for alloc failure in pci_request_irq()

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[ Upstream commit 2d9cd957d4 ]

When kvasprintf() fails to allocate memory, it returns a NULL pointer.
Return error from pci_request_irq() so we don't dereference it.

[bhelgaas: commit log]
Fixes: 704e8953d3 ("PCI/irq: Add pci_request_irq() and pci_free_irq() helpers")
Link: https://lore.kernel.org/r/20221121020029.3759444-1-zengheng4@huawei.com
Signed-off-by: Zeng Heng <zengheng4@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Zeng Heng 2022-11-21 10:00:29 +08:00 • committed by Greg Kroah-Hartman

parent c5a6776e44

commit 76ca6756bf

1 changed files with 2 additions and 0 deletions

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drivers/pci/irq.c

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