[PATCH printk v7 25/35] printk: Flush nbcon consoles first on panic
From: John Ogness
Date: Sat Aug 03 2024 - 20:56:40 EST
In console_flush_on_panic(), flush the nbcon consoles before
flushing legacy consoles. The legacy write() callbacks are not
fully safe when oops_in_progress is set.
Signed-off-by: John Ogness <john.ogness@xxxxxxxxxxxxx>
---
kernel/printk/printk.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index d54eae0d06e9..f61ecb84c3f6 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -3269,6 +3269,9 @@ void console_flush_on_panic(enum con_flush_mode mode)
if (mode == CONSOLE_REPLAY_ALL)
__console_rewind_all();
+ if (!have_boot_console)
+ nbcon_atomic_flush_pending();
+
console_flush_all(false, &next_seq, &handover);
}
--
2.39.2