Hi Heiko, On Tue, Mar 16, 2021 at 2:08 PM Heiko Carstens <hca@xxxxxxxxxxxxx> wrote: > > 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. > Thanks for the report. Can you please explain a bit what the above report tells? I will try the following on the machines I have with that patch. > This was bisected using elfutils selftests: > > autoreconf -fi > ./configure --enable-maintainer-mode --disable-debuginfod > make -j $(nproc) > cd tests > make -j $(nproc) check