git: 19dbf72a2701 - main - bhyve: correctly remove a memory mapping

The branch main has been updated by imp:

URL: https://cgit.FreeBSD.org/src/commit/?id=19dbf72a270125621268e8b07ccc9ac99c67e7d0

commit 19dbf72a270125621268e8b07ccc9ac99c67e7d0
Author:     Pierre Pronchery <pierre@freebsdfoundation.org>
AuthorDate: 2024-05-29 18:00:02 +0000
Commit:     Warner Losh <imp@FreeBSD.org>
CommitDate: 2024-05-29 19:39:29 +0000

    bhyve: correctly remove a memory mapping
    
    In a normal code path while setting up GPU passthrough, the size
    parameter to munmap() is wrong and its operation not checked for errors,
    therefore leaking resources.
    
    Reported by:    Coverity Scan
    CID:            1519830
    Sponsored by:   The FreeBSD Foundation
    
    Reviewed by: imp
    Pull Request: https://github.com/freebsd/freebsd-src/pull/1262
---
 usr.sbin/bhyve/amd64/pci_gvt-d.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/usr.sbin/bhyve/amd64/pci_gvt-d.c b/usr.sbin/bhyve/amd64/pci_gvt-d.c
index f64cc5984352..dfcd6a8f68c8 100644
--- a/usr.sbin/bhyve/amd64/pci_gvt-d.c
+++ b/usr.sbin/bhyve/amd64/pci_gvt-d.c
@@ -220,7 +220,7 @@ gvt_d_setup_opregion(struct pci_devinst *const pi)
 
 	opregion->hpa = asls;
 	opregion->len = header->size * KB;
-	munmap(header, sizeof(header));
+	munmap(header, sizeof(*header));
 
 	opregion->hva = mmap(NULL, opregion->len * KB, PROT_READ, MAP_SHARED,
 	    memfd, opregion->hpa);