6.12-stable review patch. If anyone has any objections, please let me know.
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From: Philipp Stanner phasta@kernel.org
commit f09d3937d400433080d17982bd1a540da53a156d upstream.
The array for the iomapping cookie addresses has a length of PCI_STD_NUM_BARS. This constant, however, only describes standard BARs; while PCI can allow for additional, special BARs.
The total number of PCI resources is described by constant PCI_NUM_RESOURCES, which is also used in, e.g., pci_select_bars().
Thus, the devres array has so far been too small.
Change the length of the devres array to PCI_NUM_RESOURCES.
Link: https://lore.kernel.org/r/20250312080634.13731-3-phasta@kernel.org Fixes: bbaff68bf4a4 ("PCI: Add managed partial-BAR request and map infrastructure") Signed-off-by: Philipp Stanner phasta@kernel.org Signed-off-by: Bjorn Helgaas bhelgaas@google.com Signed-off-by: Krzysztof Wilczyński kwilczynski@kernel.org Cc: stable@vger.kernel.org # v6.11+ Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/pci/devres.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/pci/devres.c +++ b/drivers/pci/devres.c @@ -40,7 +40,7 @@ * Legacy struct storing addresses to whole mapped BARs. */ struct pcim_iomap_devres { - void __iomem *table[PCI_STD_NUM_BARS]; + void __iomem *table[PCI_NUM_RESOURCES]; };
/* Used to restore the old INTx state on driver detach. */