From: Heiko Carstens <hca@linux.ibm.com>
To: Shakeel Butt <shakeelb@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Roman Gushchin <guro@fb.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Hugh Dickins <hughd@google.com>,
Juergen Christ <jchrist@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
linux-mm@kvack.org, linux-next@vger.kernel.org
Subject: [BUG -next] "memcg: charge before adding to swapcache on swapin" broken
Date: Tue, 16 Mar 2021 22:08:40 +0100 [thread overview]
Message-ID: <YFEeWD7LMPYngtbA@osiris> (raw)
Hi Shakeel,
your commit 3a9ca1b0ac0f ("memcg: charge before adding to swapcache on
swapin") in linux-next 20210316 appears to cause user process faults /
crashes on s390 like:
User process fault: interruption code 003b ilc:3 in sshd[2aa15280000+df000]
Failing address: 0000000000000000 TEID: 0000000000000800
Fault in primary space mode while using user ASCE.
AS:00000000966b41c7 R3:0000000000000024
CPU: 0 PID: 401 Comm: sshd Not tainted 5.12.0-rc3-00048-geba7667a8534 #10
Hardware name: IBM 8561 T01 703 (z/VM 7.2.0)
User PSW : 0705000180000000 0000000000000000
R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:1 AS:0 CC:0 PM:0 RI:0 EA:3
User GPRS: 0000000000000000 fffffffffffff000 0000000000000001 000002aa157b88f0
000002aa157c43c0 0000000000000000 0000000000000000 0000000000000000
0000000000000000 0000000000000000 0000000000000000 0000000000000000
0000000000000000 0000000000000000 0000000000000000 0000000000000000
User Code: Bad PSW.
This was bisected using elfutils selftests:
autoreconf -fi
./configure --enable-maintainer-mode --disable-debuginfod
make -j $(nproc)
cd tests
make -j $(nproc) check
next reply other threads:[~2021-03-16 21:09 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-16 21:08 Heiko Carstens [this message]
2021-03-16 21:21 ` [BUG -next] "memcg: charge before adding to swapcache on swapin" broken Shakeel Butt
2021-03-17 0:46 ` Heiko Carstens
2021-03-17 8:36 ` Christian Borntraeger
2021-03-17 13:33 ` Shakeel Butt
2021-03-17 15:26 ` Heiko Carstens
2021-03-17 15:44 ` Shakeel Butt
2021-03-17 20:44 ` Heiko Carstens
2021-03-17 21:11 ` Heiko Carstens
2021-03-17 21:39 ` Shakeel Butt
2021-03-18 0:23 ` Shakeel Butt
2021-03-18 1:30 ` Minchan Kim
2021-03-18 1:49 ` Shakeel Butt
2021-03-18 15:19 ` Minchan Kim
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