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-rw-r--r--fs/dcache.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/dcache.c b/fs/dcache.c
index a901c6901bce..10ba92def3f6 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -36,6 +36,7 @@
#include <linux/bit_spinlock.h>
#include <linux/rculist_bl.h>
#include <linux/prefetch.h>
+#include <linux/ratelimit.h>
#include "internal.h"
/*
@@ -2383,8 +2384,16 @@ struct dentry *d_materialise_unique(struct dentry *dentry, struct inode *inode)
actual = __d_unalias(inode, dentry, alias);
}
write_sequnlock(&rename_lock);
- if (IS_ERR(actual))
+ if (IS_ERR(actual)) {
+ if (PTR_ERR(actual) == -ELOOP)
+ pr_warn_ratelimited(
+ "VFS: Lookup of '%s' in %s %s"
+ " would have caused loop\n",
+ dentry->d_name.name,
+ inode->i_sb->s_type->name,
+ inode->i_sb->s_id);
dput(alias);
+ }
goto out_nolock;
}
}