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[PATCH 2/4] xen/arm: Check return code from fdt_finish_reservemap()
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Michal Orzel <michal.orzel@xxxxxxx>
- Date: Mon, 3 Mar 2025 09:56:48 +0100
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- Cc: Michal Orzel <michal.orzel@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Mon, 03 Mar 2025 08:57:11 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
fdt_finish_reservemap() may fail (with -FDT_ERR_NOSPACE) in which case
further DTB creation (in prepare_dtb_hwdom()) makes no sense. Fix it.
Fixes: 13bb63b754e4 ("device tree,arm: supply a flat device tree to dom0")
Signed-off-by: Michal Orzel <michal.orzel@xxxxxxx>
---
xen/arch/arm/domain_build.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 7b47abade196..fe05cf6d855f 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -2033,7 +2033,9 @@ static int __init prepare_dtb_hwdom(struct domain *d,
struct kernel_info *kinfo)
if ( ret < 0 )
goto err;
- fdt_finish_reservemap(kinfo->fdt);
+ ret = fdt_finish_reservemap(kinfo->fdt);
+ if ( ret )
+ goto err;
ret = handle_node(d, kinfo, dt_host, default_p2mt);
if ( ret )
--
2.25.1
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