linux-kernel - Re: Meet the bugs for linux-3.19-rc4 on aarch64 board

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Thu, 5 Feb 2015 09:47:11 +0800
From:	Ding Tianhong <dingtianhong@...wei.com>
To:	Catalin Marinas <catalin.marinas@....com>
CC:	Will Deacon <Will.Deacon@....com>, Arnd Bergmann <arnd@...db.de>,
	Linuxarm <linuxarm@...wei.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Meet the bugs for linux-3.19-rc4 on aarch64 board

On 2015/2/5 1:09, Catalin Marinas wrote:
> On Wed, Feb 04, 2015 at 03:17:25PM +0000, Ding Tianhong wrote:
>> bad mode in Synchronous Abort handler detected, code 0x86000005
>> CPU: 1 PID: 381 Comm: kworker/1:1 Tainted: G           O   3.19.0-rc4+ #6
>> Hardware name: Hisilicon Board ESL (DT)
>> Workqueue: events           (null)
>> task: ffffffc01cdb5800 ti: ffffffc01db28000 task.ti: ffffffc01db28000
>> PC is at 0x0
>> LR is at process_one_work+0x144/0x33c
> 
> This looks like process_one_work() tried to execute address 0, possibly
> when it does:
> 
> 	worker->current_func(work);
> 
>> Internal error: Oops - bad mode: 0 [#1] SMP
>> Modules linked in: sre(O)
>> CPU: 1 PID: 381 Comm: kworker/1:1 Tainted: G           O   3.19.0-rc4+ #6
>> Hardware name: Hisilicon Board ESL (DT)
>> Workqueue: events           (null)
> 
> So there is an "events" workqueue with a NULL function which
> process_one_work() tries to call. You could add some more debugging in
> this function or you could start bisecting (could check 3.18 first).
> 

ok, try it, thanks.

Ding


--
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/