From: Arnd Bergmann <arnd@arndb.de>
To: Michal Hocko <mhocko@kernel.org>
Cc: Naresh Kamboju <naresh.kamboju@linaro.org>,
"Linux F2FS DEV,
Mailing List" <linux-f2fs-devel@lists.sourceforge.net>,
linux-ext4 <linux-ext4@vger.kernel.org>,
linux-block <linux-block@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
open list <linux-kernel@vger.kernel.org>,
Linux-Next Mailing List <linux-next@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Andreas Dilger <adilger.kernel@dilger.ca>,
Jaegeuk Kim <jaegeuk@kernel.org>, "Theodore Ts'o" <tytso@mit.edu>,
Chao Yu <chao@kernel.org>, Hugh Dickins <hughd@google.com>,
Andrea Arcangeli <aarcange@redhat.com>,
Matthew Wilcox <willy@infradead.org>,
Chao Yu <yuchao0@huawei.com>,
lkft-triage@lists.linaro.org
Subject: Re: mm: mkfs.ext4 invoked oom-killer on i386 - pagecache_get_page
Date: Tue, 19 May 2020 10:11:25 +0200 [thread overview]
Message-ID: <CAK8P3a2T_j-Ynvhsqe_FCqS2-ZdLbo0oMbHhHChzMbryE0izAQ@mail.gmail.com> (raw)
In-Reply-To: <20200519075213.GF32497@dhcp22.suse.cz>
On Tue, May 19, 2020 at 9:52 AM Michal Hocko <mhocko@kernel.org> wrote:
>
> On Mon 18-05-20 19:40:55, Naresh Kamboju wrote:
> > Thanks for looking into this problem.
> >
> > On Sat, 2 May 2020 at 02:28, Andrew Morton <akpm@linux-foundation.org> wrote:
> > >
> > > On Fri, 1 May 2020 18:08:28 +0530 Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
> > >
> > > > mkfs -t ext4 invoked oom-killer on i386 kernel running on x86_64 device
> > > > and started happening on linux -next master branch kernel tag next-20200430
> > > > and next-20200501. We did not bisect this problem.
> [...]
> > Creating journal (131072 blocks): [ 31.251333] mkfs.ext4 invoked
> > oom-killer: gfp_mask=0x101cc0(GFP_USER|__GFP_WRITE), order=0,
> > oom_score_adj=0
> [...]
> > [ 31.500943] DMA free:187396kB min:22528kB low:28160kB high:33792kB
> > reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB
> > active_file:4736kB inactive_file:431688kB unevictable:0kB
> > writepending:62020kB present:783360kB managed:668264kB mlocked:0kB
> > kernel_stack:888kB pagetables:0kB bounce:0kB free_pcp:880kB
> > local_pcp:216kB free_cma:163840kB
>
> This is really unexpected. You are saying this is a regular i386 and DMA
> should be bottom 16MB while yours is 780MB and the rest of the low mem
> is in the Normal zone which is completely missing here. How have you got
> to that configuration? I have to say I haven't seen anything like that
> on i386.
I think that line comes from an ARM32 beaglebone-X15 machine showing
the same symptom. The i386 line from the log file that Naresh linked to at
https://lkft.validation.linaro.org/scheduler/job/1406110#L1223 is less
unusual:
[ 34.931663] Node 0 active_anon:21464kB inactive_anon:8688kB
active_file:16604kB inactive_file:849976kB unevictable:0kB
isolated(anon):0kB isolated(file):0kB mapped:25284kB dirty:58952kB
writeback:27772kB shmem:8944kB writeback_tmp:0kB unstable:0kB
all_unreclaimable? yes
[ 34.955523] DMA free:3356kB min:68kB low:84kB high:100kB
reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB
active_file:0kB inactive_file:11964kB unevictable:0kB
writepending:11980kB present:15964kB managed:15876kB mlocked:0kB
kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB
free_cma:0kB
[ 34.983385] lowmem_reserve[]: 0 825 1947 825
[ 34.987678] Normal free:3948kB min:7732kB low:8640kB high:9548kB
reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB
active_file:1096kB inactive_file:786400kB unevictable:0kB
writepending:65432kB present:884728kB managed:845576kB mlocked:0kB
kernel_stack:1112kB pagetables:0kB bounce:0kB free_pcp:2908kB
local_pcp:500kB free_cma:0kB
[ 35.017427] lowmem_reserve[]: 0 0 8980 0
[ 35.021362] HighMem free:1049496kB min:512kB low:1748kB high:2984kB
reserved_highatomic:0KB active_anon:21464kB inactive_anon:8688kB
active_file:15508kB inactive_file:51612kB unevictable:0kB
writepending:0kB present:1149540kB managed:1149540kB mlocked:0kB
kernel_stack:0kB pagetables:712kB bounce:0kB free_pcp:1524kB
local_pcp:292kB free_cma:0kB
[ 35.051717] lowmem_reserve[]: 0 0 0 0
[ 35.055374] DMA: 8*4kB (UE) 1*8kB (E) 1*16kB (E) 0*32kB 0*64kB
0*128kB 1*256kB (E) 0*512kB 1*1024kB (E) 1*2048kB (E) 0*4096kB =
3384kB
[ 35.067446] Normal: 27*4kB (U) 23*8kB (U) 12*16kB (UE) 12*32kB (U)
4*64kB (UE) 2*128kB (U) 2*256kB (UE) 1*512kB (E) 0*1024kB 1*2048kB (U)
0*4096kB = 4452kB
[ 35.081347] HighMem: 2*4kB (UM) 0*8kB 1*16kB (M) 2*32kB (UM) 1*64kB
(U) 0*128kB 1*256kB (M) 1*512kB (M) 0*1024kB 0*2048kB 256*4096kB (M) =
1049496kB
Arnd
next prev parent reply other threads:[~2020-05-19 8:11 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-01 12:38 mm: mkfs.ext4 invoked oom-killer on i386 - pagecache_get_page Naresh Kamboju
2020-05-01 20:58 ` Andrew Morton
2020-05-18 14:10 ` Naresh Kamboju
2020-05-19 7:52 ` Michal Hocko
2020-05-19 8:11 ` Arnd Bergmann [this message]
2020-05-19 8:45 ` Michal Hocko
2020-05-20 11:56 ` Naresh Kamboju
2020-05-20 17:59 ` Naresh Kamboju
2020-05-20 19:09 ` Chris Down
2020-05-21 9:22 ` Naresh Kamboju
2020-05-21 9:35 ` Arnd Bergmann
2020-05-21 9:55 ` Michal Hocko
2020-05-21 10:41 ` Naresh Kamboju
2020-05-21 10:58 ` Michal Hocko
2020-05-21 12:24 ` Hugh Dickins
2020-05-21 12:44 ` Michal Hocko
2020-05-21 19:17 ` Johannes Weiner
2020-05-21 20:06 ` Hugh Dickins
2020-05-21 21:58 ` Johannes Weiner
2020-05-21 23:35 ` Hugh Dickins
2020-05-28 14:59 ` Michal Hocko
2020-05-21 16:34 ` Michal Hocko
2020-05-21 19:00 ` Naresh Kamboju
2020-05-21 20:53 ` Naresh Kamboju
2020-05-28 15:03 ` Michal Hocko
2020-05-28 16:17 ` Naresh Kamboju
2020-05-28 16:41 ` Chris Down
2020-05-29 1:50 ` Yafang Shao
2020-05-29 1:56 ` Chris Down
2020-05-29 9:49 ` Michal Hocko
2020-06-11 9:55 ` Michal Hocko
2020-06-12 9:43 ` Naresh Kamboju
2020-06-12 12:09 ` Michal Hocko
2020-06-17 13:37 ` Naresh Kamboju
2020-06-17 13:57 ` Chris Down
2020-06-17 14:11 ` Michal Hocko
2020-06-17 15:53 ` Naresh Kamboju
2020-06-17 16:06 ` Michal Hocko
2020-06-17 20:13 ` Naresh Kamboju
2020-06-17 21:09 ` Chris Down
2020-06-18 1:43 ` Yafang Shao
2020-06-18 12:37 ` Chris Down
2020-06-18 12:41 ` Michal Hocko
2020-06-18 12:49 ` Chris Down
2020-06-18 14:59 ` Yafang Shao
2020-06-17 13:59 ` Michal Hocko
2020-06-17 14:08 ` Chris Down
2020-05-21 2:39 ` Yafang Shao
2020-05-21 8:58 ` Naresh Kamboju
2020-05-21 9:47 ` Yafang Shao
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