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SubjectRE: 174cc7187e6f ACPICA: Tables: Back port acpi_get_table_with_size() and early_acpi_os_unmap_memory() from Linux kernel
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Hi,

Can the attached patch makes something different?

Thanks and best regards
Lv

> From: Borislav Petkov [mailto:bp@alien8.de]
> Subject: Re: 174cc7187e6f ACPICA: Tables: Back port acpi_get_table_with_size() and
> early_acpi_os_unmap_memory() from Linux kernel
>
> On Tue, Jan 10, 2017 at 12:40:39AM +0100, Borislav Petkov wrote:
> > Lemme run it.
>
> Well, it boots but I get:
>
> [ 0.291447] ------------[ cut here ]------------
> [ 0.291702] WARNING: CPU: 0 PID: 1 at kernel/rcu/tree.c:3993 rcu_scheduler_starting+0x5c/0x70
> [ 0.292107] Modules linked in:
> [ 0.292277] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.10.0-rc3+ #21
> [ 0.292540] Hardware name: HP HP EliteBook 745 G3/807E, BIOS N73 Ver. 01.08 01/28/2016
> [ 0.292893] Call Trace:
> [ 0.293072] ? dump_stack+0x46/0x63
> [ 0.293285] ? __warn+0xec/0x110
> [ 0.293487] ? rcu_scheduler_starting+0x5c/0x70
> [ 0.293735] ? kernel_init_freeable+0x58/0x19a
> [ 0.293976] ? rest_init+0x80/0x80
> [ 0.294153] ? kernel_init+0xa/0x100
> [ 0.294334] ? ret_from_fork+0x22/0x30
> [ 0.294525] ---[ end trace 4c0fe009ed4dc740 ]---
>
> TBH, I like Rafael's suggestion in the other mail to stick with fixing
> this in ACPI, especially this is an ACPI problem, not RCU. Well,
> more or less: RCU could be taught to *not* do schedule_work() if
> workqueue_init() hasn't happened yet but that's a tangential.
>
> So, I'm going to bed. When I wake up, I want to see working fixes!
>
> :-)))
>
> Thanks dudes!
>
> --
> Regards/Gruss,
> Boris.
>
> Good mailing practices for 400: avoid top-posting and trim the reply.
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