[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH] commit: Replace commit_top_bs on failure after dele
From: |
Alberto Garcia |
Subject: |
[Qemu-devel] [PATCH] commit: Replace commit_top_bs on failure after deleting the block job |
Date: |
Fri, 15 Feb 2019 15:49:32 +0200 |
If there's an error in commit_start() then the block job must be
deleted before replacing commit_top_bs, otherwise it will fail because
of lack of permissions. This happens since the permission system was
introduced in 8dfba2797761d8a43744e4e6571c8175e448a478.
Fortunately this bug doesn't seem to be possible to reproduce at the
moment without changing the code.
Signed-off-by: Alberto Garcia <address@hidden>
---
block/commit.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/block/commit.c b/block/commit.c
index 53148e610b..5deb05925b 100644
--- a/block/commit.c
+++ b/block/commit.c
@@ -374,10 +374,12 @@ fail:
if (s->top) {
blk_unref(s->top);
}
+ job_early_fail(&s->common.job);
+ /* commit_top_bs has to be replaced after deleting the block job,
+ * otherwise this would fail because of lack of permissions. */
if (commit_top_bs) {
bdrv_replace_node(commit_top_bs, top, &error_abort);
}
- job_early_fail(&s->common.job);
}
--
2.11.0
- [Qemu-devel] [PATCH] commit: Replace commit_top_bs on failure after deleting the block job,
Alberto Garcia <=