linux-kernel - Re: [seqcount] INFO: trying to register non-static key.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20131112095059.GB11777@gmail.com>
Date:	Tue, 12 Nov 2013 10:50:59 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Fengguang Wu <fengguang.wu@...el.com>,
	John Stultz <john.stultz@...aro.org>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	John Stultz <john.stultz@...aro.org>,
	linux-kernel@...r.kernel.org, Vivek Goyal <vgoyal@...hat.com>,
	Jens Axboe <axboe@...nel.dk>
Subject: Re: [seqcount] INFO: trying to register non-static key.


John,

Please have a look at this regression ASAP, as it's now upstream ...

Thanks,

	Ingo

* Fengguang Wu <fengguang.wu@...el.com> wrote:

> On Mon, Nov 11, 2013 at 04:45:51PM +0100, Peter Zijlstra wrote:
> > On Mon, Nov 11, 2013 at 09:29:27AM +0800, Fengguang Wu wrote:
> > > Greetings,
> > > 
> > > I got the below dmesg and the first bad commit is
> > > 
> > > commit 1ca7d67cf5d5a2aef26a8d9afd789006fa098347
> > > Author: John Stultz <john.stultz@...aro.org>
> > > Date:   Mon Oct 7 15:51:59 2013 -0700
> > > 
> > >     seqcount: Add lockdep functionality to seqcount/seqlock structures
> > >
> > 
> > > [    4.124336] uli526x: ULi M5261/M5263 net driver, version 0.9.3 (2005-7-29)
> > > [    4.128027] Call Trace:
> > > [    4.128027]  [<7908e744>] ? console_unlock+0x353/0x380
> > > [    4.128027]  [<79dc7cf2>] dump_stack+0x48/0x60
> > > [    4.128027]  [<7908953e>] __lock_acquire.isra.26+0x7e3/0xceb
> > > [    4.128027]  [<7908a1c5>] lock_acquire+0x71/0x9a
> > > [    4.128027]  [<794079aa>] ? blk_throtl_bio+0x1c3/0x485
> > > [    4.128027]  [<7940658b>] throtl_update_dispatch_stats+0x7c/0x153
> > 
> > The below seems to compile with i386-defconfig + CONFIG_CFQ_GROUP_IOSCHED=y
> > 
> > No idea if it runs properly or not; I seem to have misplaced my i386
> > root filesystem.
> > 
> > ---
> > Subject: block: Employ u64_stats_init()
> > 
> > Now that seqcounts are lockdep tracked thingies, we need to properly
> > initialize them, otherwise bad stuff happens.
> 
> FYI the warning is still there:
> 
> /kernel/i386-randconfig-j7-11082318/d3516a7318f8e22f5462888fdf9edc8f0f128024
> 
> +-------------------------------------------------+-------+--------------+--------------+
> |                                                 | v3.12 | 838cc7b488f8 | d3516a7318f8 |
> +-------------------------------------------------+-------+--------------+--------------+
> | boot_successes                                  | 129   | 0            | 0            |
> | boot_failures                                   | 1     | 100          | 100          |
> | BUG:kernel_early_hang_without_any_printk_output | 1     |              |              |
> | INFO:trying_to_register_non-static_key          | 0     | 100          | 100          |
> +-------------------------------------------------+-------+--------------+--------------+
> 
> Thanks,
> Fengguang
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/