From: Jeff Mahoney Subject: hfs: avoid crash in hfs_bnode_create Patch-mainline: not yet References: bnc#552250 Commit 634725a92938b0f282b17cec0b007dca77adebd2 removed the BUG_ON in hfs_bnode_create in hfsplus. This patch removes it from the hfs version and avoids an fsfuzzer crash. Signed-off-by: Jeff Mahoney Acked-by: Jeff Mahoney --- fs/hfs/bnode.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/fs/hfs/bnode.c +++ b/fs/hfs/bnode.c @@ -413,7 +413,11 @@ struct hfs_bnode *hfs_bnode_create(struc spin_lock(&tree->hash_lock); node = hfs_bnode_findhash(tree, num); spin_unlock(&tree->hash_lock); - BUG_ON(node); + if (node) { + printk(KERN_CRIT "new node %u already hashed?\n", num); + WARN_ON(1); + return node; + } node = __hfs_bnode_create(tree, num); if (!node) return ERR_PTR(-ENOMEM);