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| author | Kevin Wolf <kwolf@redhat.com> | 2017-05-22 17:03:39 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2017-06-09 11:45:03 +0200 |
| commit | 93c26503e01808bfb8cea3c25eae5be63147380e (patch) | |
| tree | db81e67a1eef8fb9dab31577dd83d62815e60c7a /block/block-backend.c | |
| parent | 64175afc695c0672876fbbfc31b299c86d562cb4 (diff) | |
| download | qemu-93c26503e01808bfb8cea3c25eae5be63147380e.tar.gz | |
block: Fix anonymous BBs in blk_root_inactivate()
blk->name isn't an array, but a pointer that can be NULL. Checking for
an anonymous BB must involve a NULL check first, otherwise we get
crashes.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Diffstat (limited to 'block/block-backend.c')
| -rw-r--r-- | block/block-backend.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/block-backend.c b/block/block-backend.c index f3a60081a7..7d7f3697d1 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -168,7 +168,7 @@ static int blk_root_inactivate(BdrvChild *child) * this point because the VM is stopped) and unattached monitor-owned * BlockBackends. If there is still any other user like a block job, then * we simply can't inactivate the image. */ - if (!blk->dev && !blk->name[0]) { + if (!blk->dev && !blk_name(blk)[0]) { return -EPERM; } |