git: e499fdcb66b9 - main - libvmmapi: Zero out the structure passed to VM_GET_MEMSEG

The branch main has been updated by markj:

URL: https://cgit.FreeBSD.org/src/commit/?id=e499fdcb66b9ef3d9fc3c626daaefe909c65a2ab

commit e499fdcb66b9ef3d9fc3c626daaefe909c65a2ab
Author:     Mark Johnston <markj@FreeBSD.org>
AuthorDate: 2024-04-03 17:09:43 +0000
Commit:     Mark Johnston <markj@FreeBSD.org>
CommitDate: 2024-04-10 15:17:56 +0000

    libvmmapi: Zero out the structure passed to VM_GET_MEMSEG
    
    Avoid assuming that the kernel zeros the name buffer, it does not do
    this for zero-length segments.
    
    MFC after:      2 weeks
    Sponsored by:   Innovate UK
---
 lib/libvmmapi/vmmapi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/libvmmapi/vmmapi.c b/lib/libvmmapi/vmmapi.c
index 073aaddf4c92..5dcad8a16703 100644
--- a/lib/libvmmapi/vmmapi.c
+++ b/lib/libvmmapi/vmmapi.c
@@ -371,6 +371,7 @@ vm_get_memseg(struct vmctx *ctx, int segid, size_t *lenp, char *namebuf,
 	size_t n;
 	int error;
 
+	bzero(&memseg, sizeof(memseg));
 	memseg.segid = segid;
 	error = ioctl(ctx->fd, VM_GET_MEMSEG, &memseg);
 	if (error == 0) {