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Date: Thu, 6 Sep 2018 08:37:00 +0800 From: Rong Chen <rong.a.chen@...el.com> To: Thomas Gleixner <tglx@...utronix.de> Cc: Peter Zijlstra <peterz@...radead.org>, Linux Memory Management List <linux-mm@...ck.org>, Andrew Morton <akpm@...ux-foundation.org>, LKP <lkp@...org>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [LKP] 3f906ba236 [ 71.192813] WARNING: possible circular locking dependency detected On 09/05/2018 09:02 PM, Thomas Gleixner wrote: > On Wed, 5 Sep 2018, kernel test robot wrote: > >> Greetings, >> >> 0day kernel testing robot got the below dmesg and the first bad commit is >> >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master >> >> commit 3f906ba23689a3f824424c50f3ae937c2c70f676 >> Author: Thomas Gleixner <tglx@...utronix.de> >> AuthorDate: Mon Jul 10 15:50:09 2017 -0700 >> Commit: Linus Torvalds <torvalds@...ux-foundation.org> >> CommitDate: Mon Jul 10 16:32:33 2017 -0700 > So it identified a more than one year old commit. Great. > >> vm86 returned ENOSYS, marking as inactive. 20044 iterations. [F:14867 S:5032 HI:3700] [ 57.651003] synth uevent: /module/pcmcia_core: unknown uevent action string [ 71.189062] [ 71.191953] ====================================================== [ 71.192813] WARNING: possible circular locking dependency detected [ 71.193664] 4.12.0-10480-g3f906ba #1 Not tainted [ 71.194355] ------------------------------------------------------ [ 71.195211] trinity-c0/1666 is trying to acquire lock: [ 71.195958] (mem_hotplug_lock.rw_sem){.+.+.+}, at: show_slab_objects+0x14b/0x440 [ 71.197284] [ 71.197284] but task is already holding lock: > along with completely unparseable information. What am I supposed to do > with this mail? Hi, Attached please find the dmesg/reproduce files in previous mail. please ignore the report if it's a false positive. Best Regards, Rong Chen > > Thanks, > > tglx > _______________________________________________ > LKP mailing list > LKP@...ts.01.org > https://lists.01.org/mailman/listinfo/lkp
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