Re: "BUG: using smp_processor_id() in preemptible" on resume from S3

["Marek Marczykowski-Górecki" <marmarek@invisiblethingslab.com>]

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On Tue, Mar 22, 2022 at 08:12:53AM +0100, Juergen Gross wrote:
> Hi Marek,
> 
> On 21.03.22 23:26, Marek Marczykowski-Górecki wrote:
> > Hi,
> > 
> > After updating from 5.14.15 dom0 kernel to 5.16.13 I started getting
> > this on resume from S3:
> > 
> > [   88.082751] ACPI: PM: Low-level resume complete
> > [   88.087933] ACPI: EC: EC started
> > [   88.091464] ACPI: PM: Restoring platform NVS memory
> > [   88.097166] xen_acpi_processor: Uploading Xen processor PM info
> > [   88.103850] Enabling non-boot CPUs ...
> > [   88.108128] installing Xen timer for CPU 1
> > [   88.112763] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-sleep/7138
> > [   88.122256] caller is is_xen_pmu+0x12/0x30
> > [   88.126937] CPU: 0 PID: 7138 Comm: systemd-sleep Tainted: G        W         5.16.13-2.fc32.qubes.x86_64 #1
> > [   88.137939] Hardware name: Star Labs StarBook/StarBook, BIOS 7.97 03/21/2022
> > [   88.145930] Call Trace:
> > [   88.148757]  <TASK>
> > [   88.151193]  dump_stack_lvl+0x48/0x5e
> > [   88.155381]  check_preemption_disabled+0xde/0xe0
> > [   88.160641]  is_xen_pmu+0x12/0x30
> > [   88.164441]  xen_smp_intr_init_pv+0x75/0x100
> > [   88.169311]  ? xen_read_cr0+0x20/0x20
> > [   88.173502]  xen_cpu_up_prepare_pv+0x3e/0x90
> 
> Thanks for the report.
> 
> Could you please test whether the attached patch is helping?

Yes, that helps, thanks!

-- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab

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