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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , netdev@vger.kernel.org Subject: [PATCH printk 6/6] netconsole: Always perform unsafe flushing on panic/kdb/restart Date: Mon, 9 Nov 2026 13:37:23 +0106 Message-ID: <20261109123127.489676-7-john.ogness@linutronix.de> In-Reply-To: <20261109123127.489676-1-john.ogness@linutronix.de> References: <20261109123127.489676-1-john.ogness@linutronix.de> 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 As a legacy console the netconsole would perform unsafe flushing during panic/kdb/restart. With commit 7eab73b18630 ("netconsole: convert to NBCON console infrastructure") the netconsole is now an NBCON console, however it uses the CON_NBCON_ATOMIC_UNSAFE flag and this prevents unsafe flushing except for at the very end of panic(). Enable unsafe flushing policies to allow the netconsole to perform unsafe flushing during all panic/kdb/restart variations, just as it did when it was a legacy console. Signed-off-by: John Ogness --- drivers/net/netconsole.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c index 267254f046de9..6c1587958e915 100644 --- a/drivers/net/netconsole.c +++ b/drivers/net/netconsole.c @@ -2695,6 +2695,8 @@ static void free_param_target(struct netconsole_target *nt) static struct console netconsole_ext = { .name = "netcon_ext", .flags = CON_ENABLED | CON_EXTENDED | CON_NBCON | CON_NBCON_ATOMIC_UNSAFE, + .unsafe_flush_flags = NBCON_PANIC_FLUSH | NBCON_PANIC_PRINTK | NBCON_KDB | + NBCON_NORMAL_NOTHREAD, .write_thread = netconsole_write_ext, .write_atomic = netconsole_write_ext, .device_lock = netconsole_device_lock, @@ -2704,6 +2706,8 @@ static struct console netconsole_ext = { static struct console netconsole = { .name = "netcon", .flags = CON_ENABLED | CON_NBCON | CON_NBCON_ATOMIC_UNSAFE, + .unsafe_flush_flags = NBCON_PANIC_FLUSH | NBCON_PANIC_PRINTK | NBCON_KDB | + NBCON_NORMAL_NOTHREAD, .write_thread = netconsole_write_basic, .write_atomic = netconsole_write_basic, .device_lock = netconsole_device_lock, -- 2.47.3