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[82.69.66.36]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48722fa8dc6sm90653825e9.1.2026.03.26.13.18.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Mar 2026 13:18:13 -0700 (PDT) From: david.laight.linux@gmail.com To: "Theodore Ts'o" , Andreas Dilger , linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org Cc: David Laight , Masami Hiramatsu , Petr Mladek , Rasmus Villemoes , Andy Shevchenko , Steven Rostedt , Sergey Senozhatsky , Andrew Morton Subject: [PATCH next] ext4: Fix diagnostic printf formats Date: Thu, 26 Mar 2026 20:18:04 +0000 Message-Id: <20260326201804.3881-1-david.laight.linux@gmail.com> X-Mailer: git-send-email 2.39.5 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: David Laight The formats for non-terminated names should be "%.*s" not "%*.s". The kernel currently treats "%*.s" as equivalent to "%*s" whereas userspace requires it be equivalent to "%*.0s". Neither is correct here. Signed-off-by: David Laight --- fs/ext4/namei.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index c4b5e252af0e..7aaf5fbd4498 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -647,7 +647,7 @@ static struct stats dx_show_leaf(struct inode *dir, /* Directory is not encrypted */ (void) ext4fs_dirhash(dir, de->name, de->name_len, &h); - printk("%*.s:(U)%x.%u ", len, + printk("%.*s:(U)%x.%u ", len, name, h.hash, (unsigned) ((char *) de - base)); @@ -683,7 +683,7 @@ static struct stats dx_show_leaf(struct inode *dir, (void) ext4fs_dirhash(dir, de->name, de->name_len, &h); - printk("%*.s:(E)%x.%u ", len, name, + printk("%.*s:(E)%x.%u ", len, name, h.hash, (unsigned) ((char *) de - base)); fscrypt_fname_free_buffer( @@ -694,7 +694,7 @@ static struct stats dx_show_leaf(struct inode *dir, char *name = de->name; (void) ext4fs_dirhash(dir, de->name, de->name_len, &h); - printk("%*.s:%x.%u ", len, name, h.hash, + printk("%.*s:%x.%u ", len, name, h.hash, (unsigned) ((char *) de - base)); #endif } -- 2.39.5