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Wed, 11 Nov 2026 07:50:15 -0800 (PST) Received: from pathway.suse.cz ([176.114.240.130]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4ba08ddbfcesm34455965e9.0.2026.11.11.07.50.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Nov 2026 07:50:14 -0800 (PST) From: Petr Mladek To: John Ogness Cc: Sergey Senozhatsky , Steven Rostedt , Marcos Paulo de Souza , Chris Down , Naveen Kumar Chaudhary , printk@lists.linux.dev, linux-kernel@vger.kernel.org, Petr Mladek Subject: [PATCH v7 09/17] printk: Do not quietly ignore adding entry for a preferred console when there is no space Date: Wed, 11 Nov 2026 16:48:08 +0100 Message-ID: <20261111154816.71103-10-pmladek@suse.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261111154816.71103-1-pmladek@suse.com> References: <20261111154816.71103-1-pmladek@suse.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit It is hard to imagine that anyone would want to add more than 8 preferred consoles. But never say never. And do not ignore new entries quietly. Signed-off-by: Petr Mladek Acked-by: Chris Down Reviewed-by: John Ogness --- kernel/printk/printk.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index e9b189eae548..5275bcf32578 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -2578,8 +2578,10 @@ static int add_or_update_preferred_console(unsigned int i, struct preferred_console *pc; bool is_new_entry = false; - if (i >= MAX_PREFERRED_CONSOLES) + if (i >= MAX_PREFERRED_CONSOLES) { + pr_err_once("Reached maximal number of preferred consoles.\n"); return -E2BIG; + } pc = &preferred_consoles[i]; -- 2.56.0