From: Borislav Petkov <bp@alien8.de>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: "Zheng, Lv" <lv.zheng@intel.com>,
"Rafael J. Wysocki" <rafael@kernel.org>,
"Wysocki, Rafael J" <rafael.j.wysocki@intel.com>,
"Moore, Robert" <robert.moore@intel.com>,
J?rg R?del <joro@8bytes.org>, lkml <linux-kernel@vger.kernel.org>,
Linux ACPI <linux-acpi@vger.kernel.org>
Subject: Re: 174cc7187e6f ACPICA: Tables: Back port acpi_get_table_with_size() and early_acpi_os_unmap_memory() from Linux kernel
Date: Tue, 10 Jan 2017 00:52:11 +0100 [thread overview]
Message-ID: <20170109235211.yetponvbexvalkir@pd.tnic> (raw)
In-Reply-To: <20170109234039.mfefmv5dv4shxnfn@pd.tnic>
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.
next prev parent reply other threads:[~2017-01-09 23:52 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20170107204227.bwdb5yzrjpiggkmo@pd.tnic>
2017-01-07 23:30 ` 174cc7187e6f ACPICA: Tables: Back port acpi_get_table_with_size() and early_acpi_os_unmap_memory() from Linux kernel Rafael J. Wysocki
2017-01-08 0:07 ` Borislav Petkov
2017-01-08 0:22 ` Rafael J. Wysocki
2017-01-08 0:37 ` Borislav Petkov
2017-01-08 0:52 ` Rafael J. Wysocki
2017-01-08 1:01 ` Borislav Petkov
2017-01-08 1:45 ` Rafael J. Wysocki
2017-01-08 2:20 ` Rafael J. Wysocki
2017-01-08 13:03 ` Borislav Petkov
2017-01-09 1:58 ` Zheng, Lv
2017-01-09 2:36 ` Zheng, Lv
2017-01-09 9:33 ` Borislav Petkov
2017-01-09 22:18 ` Paul E. McKenney
2017-01-09 22:25 ` Rafael J. Wysocki
2017-01-09 23:14 ` Paul E. McKenney
2017-01-09 23:15 ` Borislav Petkov
2017-01-09 23:32 ` Paul E. McKenney
2017-01-09 23:40 ` Borislav Petkov
2017-01-09 23:52 ` Paul E. McKenney
2017-01-09 23:52 ` Borislav Petkov [this message]
2017-01-10 0:44 ` Zheng, Lv
2017-01-10 1:27 ` Rafael J. Wysocki
2017-01-10 2:23 ` Paul E. McKenney
2017-01-10 5:41 ` Zheng, Lv
2017-01-10 5:51 ` Paul E. McKenney
2017-01-11 9:21 ` Borislav Petkov
2017-01-11 9:51 ` Paul E. McKenney
2017-01-11 10:03 ` Borislav Petkov
2017-01-11 10:22 ` Paul E. McKenney
2017-01-10 9:41 ` Borislav Petkov
2017-01-11 3:42 ` Rafael J. Wysocki
2017-01-11 9:42 ` Borislav Petkov
2017-01-09 23:42 ` Rafael J. Wysocki
2017-01-10 0:21 ` Paul E. McKenney
2017-01-09 5:21 ` Zheng, Lv
2017-01-09 10:52 ` Jörg Rödel
2017-01-09 22:41 ` Rafael J. Wysocki
2017-01-09 22:57 ` Borislav Petkov
2017-01-10 13:58 ` Jörg Rödel
[not found] ` <9dc727dc367a34ae23965e0cb0fe7668d1fc64d4>
2017-01-11 9:54 ` [PATCH v2] ACPI / OSL: Fix rcu synchronization logic Lv Zheng
2017-01-11 18:45 ` Rafael J. Wysocki
2017-01-12 3:38 ` Zheng, Lv
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