[PVE-User] do_IRQ: No irq handler for vector

[Marco Gaiarin]

I've setup an home server, using an old HP ProLiant ML110G6 server,
with PVE6, kernel 5.3.18-2-pve.


I reveive, spuriously, logs like:

 root at ino:~# grep do_IRQ /var/log/kern.log
 Mar  1 05:10:51 ino kernel: [197698.269626] do_IRQ: 3.40 No irq handler for vector
 Mar  1 08:12:52 ino kernel: [208619.012511] do_IRQ: 2.41 No irq handler for vector
 Mar  1 11:59:10 ino kernel: [222196.730017] do_IRQ: 3.40 No irq handler for vector
 Mar  1 17:09:00 ino kernel: [240787.084289] do_IRQ: 2.41 No irq handler for vector
 Mar  1 17:19:10 ino kernel: [241396.356441] do_IRQ: 0.41 No irq handler for vector
 Mar  1 23:33:00 ino kernel: [263826.632318] do_IRQ: 1.40 No irq handler for vector
 Mar  2 00:08:51 ino kernel: [265976.985582] do_IRQ: 3.41 No irq handler for vector
 Mar  2 05:40:21 ino kernel: [285866.764386] do_IRQ: 1.41 No irq handler for vector
 Mar  2 08:48:00 ino kernel: [297125.421168] do_IRQ: 2.40 No irq handler for vector
 Mar  2 08:52:01 ino kernel: [297366.060392] do_IRQ: 2.41 No irq handler for vector
 Mar  2 11:32:01 ino kernel: [306965.868404] do_IRQ: 0.39 No irq handler for vector

Server work as expected, without any trouble, crash, ...


AFAI've understood, first numer is the core (i have 4), second is the
interrupt vector.

Googling around i've hit:

	https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1781016

and effectively i've many 'serial' USB interfaces connected (2 USB
serial port, an APC UPS, a GSM dongle).


I've tried to, using the irq vecrot, to understand the peripheral, but
the command proposed:

	grep 35 /sys/kernel/debug/irq/irqs/*

does not work, there's no more '/sys/kernel/debug/irq/irqs/*' interface
in sysfs.


Someone have some hint? Thanks.

-- 
dott. Marco Gaiarin				        GNUPG Key ID: 240A3D66
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