When running current kernel on s390x in tcg mode *on s390x hw*, the following
is generated when loading crypto selftest module (it gets loaded automatically):
[ 10.546690] alg: skcipher: chacha20-s390 encryption test failed (wrong result) on test
vector 1, cfg="in-place (one sglist)"
[ 10.546914] alg: self-tests for chacha20 using chacha20-s390 failed (rc=-22)
[ 10.546969] ------------[ cut here ]------------
[ 10.546998] alg: self-tests for chacha20 using chacha20-s390 failed (rc=-22)
[ 10.547182] WARNING: CPU: 1 PID: 109 at crypto/testmgr.c:5936
alg_test+0x55a/0x5b8
[ 10.547510] Modules linked in: net_failover chacha_s390(+) libchacha
virtio_blk(+) failover
[ 10.547854] CPU: 1 PID: 109 Comm: cryptomgr_test Not tainted 6.5.0-5-s390x
#1 Debian 6.5.13-1
[ 10.548002] Hardware name: QEMU 8561 QEMU (KVM/Linux)
[ 10.548101] Krnl PSW : 0704c00180000000 00000000005df8fe
(alg_test+0x55e/0x5b8)
[ 10.548207] R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:0
RI:0 EA:3
[ 10.548291] Krnl GPRS: 0000000000000000 0000000001286408 00000000005df8fa
0000000001286408
[ 10.548337] 000000000014bf14 00000000001c6ba8 0000000001838b3c
0000000000000005
[ 10.548475] 00000000025a4880 00000000025a4800 ffffffffffffffea
00000000ffffffea
[ 10.548521] 000000003e649200 00000000ffffffff 00000000005df8fa
000003800016bcf8
[ 10.549504] Krnl Code: 00000000005df8ee: c020003b5828 larl
%r2,0000000000d4a93e
[ 10.549504] 00000000005df8f4: c0e5ffdb62d2 brasl
%r14,000000000014be98
[ 10.549504] #00000000005df8fa: af000000 mc 0,0
[ 10.549504] >00000000005df8fe: a7f4fee6 brc
15,00000000005df6ca
[ 10.549504] 00000000005df902: b9040042 lgr %r4,%r2
[ 10.549504] 00000000005df906: b9040039 lgr %r3,%r9
[ 10.549504] 00000000005df90a: c020003b57df larl
%r2,0000000000d4a8c8
[ 10.549504] 00000000005df910: 18bd lr
%r11,%r13
[ 10.550004] Call Trace:
[ 10.550375] [<00000000005df8fe>] alg_test+0x55e/0x5b8
[ 10.550467] ([<00000000005df8fa>] alg_test+0x55a/0x5b8)
[ 10.550489] [<00000000005d9fbc>] cryptomgr_test+0x34/0x60
[ 10.550514] [<000000000017d004>] kthread+0x124/0x130
[ 10.550539] [<0000000000103124>] __ret_from_fork+0x3c/0x50
[ 10.550562] [<0000000000b1dfca>] ret_from_fork+0xa/0x30
[ 10.550611] Last Breaking-Event-Address:
[ 10.550626] [<000000000014bf20>] __warn_printk+0x88/0x110
[ 10.550723] ---[ end trace 0000000000000000 ]---
git bisect points to this commit:
commit ab84dc398b3b702b0c692538b947ef65dbbdf52f
Author: Richard Henderson <richard.hender...@linaro.org>
Date: Wed Aug 23 23:04:24 2023 -0700
tcg/optimize: Optimize env memory operations
So far, this seems to work on amd64 host, but fails on s390x host -
where this has been observed so far. Maybe it also fails in some
other combinations too, I don't yet know. Just finished bisecting
it on s390x.
FWIW,
/mjt
