From: Colin Ian King <colin.k...@canonical.com>

The  uninitialized variable dn.node_changed does not get set when a
call to f2fs_get_node_page fails.  This uninitialized value gets used
in the call to f2fs_balance_fs() that may or not may not balances
dirty node and dentry pages depending on the uninitialized state of
the variable. Fix this by only calling f2fs_balance_fs if err is
not set.

Thanks to Jaegeuk Kim for suggesting an appropriate fix.

Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: 2a3407607028 ("f2fs: call f2fs_balance_fs only when node was changed")
Signed-off-by: Colin Ian King <colin.k...@canonical.com>
---
 fs/f2fs/inline.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
index 993caefcd2bb..92652ca7a7c8 100644
--- a/fs/f2fs/inline.c
+++ b/fs/f2fs/inline.c
@@ -219,7 +219,8 @@ int f2fs_convert_inline_inode(struct inode *inode)
 
        f2fs_put_page(page, 1);
 
-       f2fs_balance_fs(sbi, dn.node_changed);
+       if (!err)
+               f2fs_balance_fs(sbi, dn.node_changed);
 
        return err;
 }
-- 
2.30.0

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