kernel_5.10 no rt

hc

2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f

 kernel/lib/nmi_backtrace.c
..
..
@@ -75,6 +75,12 @@
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 		touch_softlockup_watchdog();
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 	}
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+	/*
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+	 * Force flush any remote buffers that might be stuck in IRQ context
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+	 * and therefore could not run their irq_work.
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+	 */
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+	printk_safe_flush();
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+
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 	clear_bit_unlock(0, &backtrace_flag);
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 	put_cpu();
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 }