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SubjectRe: [serial8250_interrupt] RIP: 0010:arch_local_irq_restore+0x2/0x8
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On Tue, 2017-11-21 at 16:39 +0200, Andy Shevchenko wrote:
> On Tue, 2017-11-21 at 21:31 +0800, Fengguang Wu wrote:
> > On Tue, Nov 21, 2017 at 08:33:57PM +0800, Fengguang Wu wrote:

>>> FYI this happens in mainline kernel 4.14.0-02748-gabc36be.
> > > It shows up since v4.13 .
> >
> > Sorry it actually also shows up in 4.10:

>> [ 21.020567] irq 3: nobody cared (try booting with the "irqpoll"
> > option)

> > [ 21.039171] uart_start+0x73/0xe0

> > [ 21.044977] vfs_write+0xc8/0x1e0

> > [ 21.054662] Disabling IRQ #3

Another question who and why initiates a write to ttyS1 (console seems
on ttyS0).

--
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Intel Finland Oy

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