Messages in this thread Patch in this message | | | From | Schspa Shi <> | Subject | [PATCH 5.15-rt] printk: fix suppressed message print when reboot/panic | Date | Mon, 21 Mar 2022 19:15:02 +0800 |
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Update printk_seq for suppressed message.
When message is suppressed, printk_seq should be updated, otherwise this message will be printed when reboot. This problem was introduced in commit 3edc0c85d154 ("printk: Rebase on top of new ring buffer").
This patch apply fix to 5.15-rt according to Message-ID: <87a6dj3b5c.fsf@jogness.linutronix.de>
Signed-off-by: Schspa Shi <schspa@gmail.com> --- kernel/printk/printk.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index 0cc8e8acf545..c3e245c95de4 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -2255,8 +2255,12 @@ static int printk_kthread_func(void *data) if (!(con->flags & CON_ENABLED)) continue; - if (suppress_message_printing(r.info->level)) + if (suppress_message_printing(r.info->level)) { + console_lock(); + latched_seq_write(&con->printk_seq, seq); + console_unlock(); continue; + } if (con->flags & CON_EXTENDED) { len = info_print_ext_header(ext_text, -- 2.29.0
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