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btrfs-progs: catch memory allocation failure from alloc_tree_backref

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Do the dumb BUG_ON now, the function needs more changes to handle all
errors.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2016-01-06 15:52:11 +01:00
parent cb2b8b19c8
commit 62b4c169e4
1 changed files with 6 additions and 1 deletions
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7
cmds-check.c
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@ -4354,6 +4354,9 @@ static struct tree_backref *alloc_tree_backref(struct extent_record *rec,
u64 parent, u64 root)
{
struct tree_backref *ref = malloc(sizeof(*ref));
if (!ref)
return NULL;
memset(&ref->node, 0, sizeof(ref->node));
if (parent > 0) {
ref->parent = parent;
@ -4660,8 +4663,10 @@ static int add_tree_backref(struct cache_tree *extent_cache, u64 bytenr,
}
back = find_tree_backref(rec, parent, root);
if (!back)
if (!back) {
back = alloc_tree_backref(rec, parent, root);
BUG_ON(!back);
}
if (found_ref) {
if (back->node.found_ref) {