[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH] x86/PVHv2: fix dereference of native RSDP table mapping
Check that the RSDP is mapped before trying to access it. Spotted-by: Coverity Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx> --- Cc: Jan Beulich <jbeulich@xxxxxxxx> Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> --- xen/arch/x86/domain_build.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/xen/arch/x86/domain_build.c b/xen/arch/x86/domain_build.c index d742965..78ae741 100644 --- a/xen/arch/x86/domain_build.c +++ b/xen/arch/x86/domain_build.c @@ -2592,6 +2592,11 @@ static int __init pvh_setup_acpi(struct domain *d, paddr_t start_info) /* Craft a custom RSDP. */ native_rsdp = acpi_os_map_memory(acpi_os_get_root_pointer(), sizeof(rsdp)); + if ( !native_rsdp ) + { + printk("Failed to map native RSDP\n"); + return -ENOMEM; + } memcpy(rsdp.oem_id, native_rsdp->oem_id, sizeof(rsdp.oem_id)); acpi_os_unmap_memory(native_rsdp, sizeof(rsdp)); rsdp.xsdt_physical_address = xsdt_paddr; -- 2.10.1 (Apple Git-78) _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |