From f7091c0e1fd43877621d4eb2c1c4106797b3c551 Mon Sep 17 00:00:00 2001 From: Frediano Ziglio Date: Mon, 27 Oct 2025 15:52:20 +0100 Subject: [PATCH] xen/pci: prevent infinite loop for faulty SR-IOV cards MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If a SR-IOV card presents an I/O space inside a BAR the code will continue to loop on the same card. This is due to the missing increment of the cycle variable. Fixes: a1a6d59862f4 ("pci: split code to size BARs from pci_add_device") Signed-off-by: Frediano Ziglio Reviewed-by: Roger Pau Monné Reviewed-by: Jan Beulich Release-Acked-By: Oleksii Kurochko --- xen/drivers/passthrough/pci.c | 1 + 1 file changed, 1 insertion(+) diff --git a/xen/drivers/passthrough/pci.c b/xen/drivers/passthrough/pci.c index 3edcfa8a04..52c22fa50c 100644 --- a/xen/drivers/passthrough/pci.c +++ b/xen/drivers/passthrough/pci.c @@ -746,6 +746,7 @@ int pci_add_device(u16 seg, u8 bus, u8 devfn, printk(XENLOG_WARNING "SR-IOV device %pp with vf BAR%u in IO space\n", &pdev->sbdf, i); + ++i; continue; } ret = pci_size_mem_bar(pdev->sbdf, idx, NULL,