If the size returned from llistxattr is 0, we skipped the malloc call, leaving xattr.value uninitialized. However, this value is later passed to `g_free` without any further checks, causing an error. Fix that by always calling g_malloc unconditionally. If `size` is 0, it will return a pointer that is safe to pass to g_free, likely NULL.
Signed-off-by: Keno Fischer <k...@juliacomputing.com> --- Changes since v1: New patch hw/9pfs/9p.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c index d74302d..b80db65 100644 --- a/hw/9pfs/9p.c +++ b/hw/9pfs/9p.c @@ -3256,8 +3256,8 @@ static void coroutine_fn v9fs_xattrwalk(void *opaque) xattr_fidp->fs.xattr.len = size; xattr_fidp->fid_type = P9_FID_XATTR; xattr_fidp->fs.xattr.xattrwalk_fid = true; + xattr_fidp->fs.xattr.value = g_malloc0(size); if (size) { - xattr_fidp->fs.xattr.value = g_malloc0(size); err = v9fs_co_llistxattr(pdu, &xattr_fidp->path, xattr_fidp->fs.xattr.value, xattr_fidp->fs.xattr.len); -- 2.8.1