From: Mel Gorman <mgorman@techsingularity•net>
To: Yury Norov <yury.norov@gmail•com>
Cc: Andrea Arcangeli <aarcange@redhat•com>,
Catalin Marinas <catalin.marinas@arm•com>,
Linus Torvalds <torvalds@linux-foundation•org>,
Will Deacon <will.deacon@arm•com>,
linux-kernel@vger•kernel.org, Michal Hocko <mhocko@kernel•org>,
linux-arm-kernel@lists•infradead.org,
David Rientjes <rientjes@google•com>,
Andrew Morton <akpm@linux-foundation•org>,
Zi Yan <zi.yan@cs•rutgers.edu>, Vlastimil Babka <vbabka@suse•cz>
Subject: Re: 5.0-rc kernel hangs on early boot
Date: Wed, 13 Feb 2019 13:19:48 +0000 [thread overview]
Message-ID: <20190213131948.GR9565@techsingularity.net> (raw)
In-Reply-To: <20190213115115.GA8928@yury-thinkpad>
On Wed, Feb 13, 2019 at 02:51:15PM +0300, Yury Norov wrote:
> On Wed, Feb 13, 2019 at 11:14:09AM +0000, Mel Gorman wrote:
> > On Wed, Feb 13, 2019 at 11:25:40AM +0300, Yury Norov wrote:
> > > Hi Mel, all,
> > >
> > > My kernel on qemu/arm64 setup hangs at early boot since v5.0-rc1.
> > > Backtrace is not too verbose:
> > > (gdb) i threads
> > > Id Target Id Frame
> > > * 1 Thread 1 (CPU#0 [running]) 0xffff000010a49b74 in __delay (cycles=4096)
> > > at arch/arm64/lib/delay.c:49
> > > 2 Thread 2 (CPU#1 [halted ]) 0x0000000000000000 in ?? ()
> > > 3 Thread 3 (CPU#2 [halted ]) 0x0000000000000000 in ?? ()
> > > 4 Thread 4 (CPU#3 [halted ]) 0x0000000000000000 in ?? ()
> > > (gdb) bt
> > > #0 0xffff000010a49b74 in __delay (cycles=4096) at arch/arm64/lib/delay.c:49
> > > Backtrace stopped: previous frame identical to this frame (corrupt stack?)
> > >
> > > Reverting the patch
> > > 1c30844d2dfe272d58c ("mm: reclaim small amounts of memory when an external
> > > fragmentation event occurs") together with following patch
> > > 73444bc4d8f92e46a20 ("mm, page_alloc: do not wake kswapd with zone lock held")
> > > helps me to boot normally.
> > >
> >
> > Well, that's a bad start to any day. Thanks for tracking it down. Does
> > the following patch help? I can't test it properly as I didn't recreate
> > your boot image or initrd but this appears to get past the initial boot
> > phase at least.
>
> Hi Mel,
>
> The patch works for me. The day gets better indeed. :-)
>
> Tested-by: Yury Norov <yury.norov@gmail•com>
>
Thanks! I've resent the patch to Andrew so hopefully it'll be picked up
before 5.0 is released.
--
Mel Gorman
SUSE Labs
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next prev parent reply other threads:[~2019-02-13 13:20 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-13 8:25 5.0-rc kernel hangs on early boot Yury Norov
2019-02-13 11:14 ` Mel Gorman
2019-02-13 11:51 ` Yury Norov
2019-02-13 13:19 ` Mel Gorman [this message]
2019-02-13 11:18 ` Will Deacon
2019-02-13 11:21 ` Mel Gorman
2019-02-13 11:25 ` Will Deacon
2019-02-13 11:29 ` Mel Gorman
2019-02-13 11:55 ` Yury Norov
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