Re: Regression caused by commit bc976233a872, ethernet r8169 stops working after system S3

[Thomas Gleixner <tglx@linutronix.de>]

On Sat, 31 Mar 2018, Kai-Heng Feng wrote:
> A user reported [1] that the Realtek ethernet r8169 stops working after S3
> since v4.15-rc6. The issue still exists in Linus' tree:
> 
> [ 150.877998] IPv6: ADDRCONF(NETDEV_UP): enp1s0: link is not ready
> [ 150.944101] do_IRQ: 3.37 No irq handler for vector
> [ 150.944105] r8169 0000:01:00.0 enp1s0: link down
> [ 150.944180] IPv6: ADDRCONF(NETDEV_UP): enp1s0: link is not ready
> 
> My desktop also has this device, which is also affected by this regression. So
> I did a bisect, and this is the bad commit:
> bc976233a872 genirq/msi x86/vector: Prevent reservation mode for non maskable
> MSI
> 
> After this commit gets reverted, the issue is gone.

Sigh. Can you please apply the debug patch below and provide the output of

# cat /proc/interrupts

and full dmesg after resume.

Thanks,

	tglx

8<------------------
--- a/kernel/irq/cpuhotplug.c
+++ b/kernel/irq/cpuhotplug.c
@@ -134,6 +134,10 @@ static bool migrate_one_irq(struct irq_d
 		brokeaff = false;
 	}
 
+	pr_info("IRQ%u: New affinity: %*pbl effective: %*pbl\n",
+		cpumask_pr_args(affinity),
+		irq_data_get_effective_affinity_mask(d));
+
 	if (maskchip && chip->irq_unmask)
 		chip->irq_unmask(d);