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SubjectRe: [REGRESSION] Failed network caused by: xhci: switch to pci_alloc_irq_vectors
On Fri, 19 May 2017 10:20:03 +0200
Christoph Hellwig <hch@lst.de> wrote:

> On Thu, May 18, 2017 at 11:42:34PM -0400, Steven Rostedt wrote:
> >
> > One of my the configs I use to test ftrace with (configs that have
> > caused failures in the past), has lots of irq issues and fails to
> > initialize the network of my box. I bisected the problem down to a
> > single commit, and when I revert that commit, my box boots without any
> > network or irq issues.
>
> Can send me the /proc/interrupts output for the system? The commit
> should not have changed behavior and that will narrow down where
> I need to look for an issue.

Sure, here:

# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 140 0 0 0 IO-APIC 2-edge timer
4: 91 0 190 0 IO-APIC 4-edge ttyS0
8: 0 0 1 0 IO-APIC 8-edge rtc0
9: 0 0 0 0 IO-APIC 9-fasteoi acpi
16: 13 116 42 0 IO-APIC 16-fasteoi xhci-hcd:usb1, ehci_hcd:usb3, eth2
19: 329 0 6008 714 IO-APIC 19-fasteoi ahci[0000:00:1f.2]
23: 1 0 12 0 IO-APIC 23-fasteoi ehci_hcd:usb4
NMI: 0 0 0 0 Non-maskable interrupts
LOC: 10443 7996 17600 9457 Local timer interrupts
SPU: 0 0 0 0 Spurious interrupts
PMI: 0 0 0 0 Performance monitoring interrupts
IWI: 0 0 0 0 IRQ work interrupts
RTR: 1 0 0 0 APIC ICR read retries
RES: 3665 2733 2160 2566 Rescheduling interrupts
CAL: 1796 1806 258 2079 Function call interrupts
TLB: 14 15 30 10 TLB shootdowns
TRM: 0 0 0 0 Thermal event interrupts
THR: 0 0 0 0 Threshold APIC interrupts
DFR: 0 0 0 0 Deferred Error APIC interrupts
MCE: 0 0 0 0 Machine check exceptions
MCP: 0 0 0 0 Machine check polls
ERR: 130
MIS: 0
PIN: 0 0 0 0 Posted-interrupt notification event
PIW: 0 0 0 0 Posted-interrupt wakeup event

Just in case this makes a difference:

# cat /proc/cmdline
ro root=/dev/sda7 LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us console=ttyS0,115200 nmi_watchdog=panic earlyprintk=ttyS0,115200 ignore_loglevel selinux=0 crashkernel=128M@256M isocpus=3

-- Steve

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