From f741bcadfe52e424985926d4d1c1e3941bf8403e Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 22 Sep 2023 10:52:57 -0700 Subject: PCI: hv: Annotate struct hv_dr_state with __counted_by MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct hv_dr_state. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Link: https://lore.kernel.org/linux-pci/20230922175257.work.900-kees@kernel.org Signed-off-by: Kees Cook Signed-off-by: Krzysztof Wilczyński Reviewed-by: "Gustavo A. R. Silva" Acked-by: Wei Liu Cc: Bjorn Helgaas Cc: Dexuan Cui Cc: Haiyang Zhang Cc: "K. Y. Srinivasan" Cc: Krzysztof Wilczyński Cc: Lorenzo Pieralisi Cc: Rob Herring Cc: Wei Liu Cc: linux-hyperv@vger.kernel.org Cc: linux-pci@vger.kernel.org --- drivers/pci/controller/pci-hyperv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/pci') diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c index bed3cefdaf19..30c7dfeccb16 100644 --- a/drivers/pci/controller/pci-hyperv.c +++ b/drivers/pci/controller/pci-hyperv.c @@ -545,7 +545,7 @@ struct hv_pcidev_description { struct hv_dr_state { struct list_head list_entry; u32 device_count; - struct hv_pcidev_description func[]; + struct hv_pcidev_description func[] __counted_by(device_count); }; struct hv_pci_dev { -- cgit v1.2.3-70-g09d2