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Date:   Sun, 3 Jan 2021 16:39:56 +0300
From:   Anatoly Pugachev <matorola@...il.com>
To:     Linux Kernel list <linux-kernel@...r.kernel.org>
Cc:     Sparc kernel list <sparclinux@...r.kernel.org>
Subject: Re: [sparc64] running stress-ng and a sparc64 hardware / kernel woes

just to give you another sample:

running stress-ng in ssh session:

stress-ng --opcode 1 --timeout 60 --metrics-brief

get the following on the console:

[  813.208349] Kernel unaligned access at TPC[4cf720] lock_acquire+0x100/0x200
[  813.208378] Unable to handle kernel paging request in mna handler
[  813.208419]  at virtual address 794b00a7d6fbfb37
[  813.208460] current->{active_,}mm->context = 0000000000001774
[  813.208483] current->{active_,}mm->pgd = fff800004a6cc000
[  813.208506]               \|/ ____ \|/
[  813.208506]               "@'/ .. \`@"
[  813.208506]               /_| \__/ |_\
[  813.208506]                  \__U_/
[  813.208555] stress-ng-opcod(5955): Oops [#1]
[  813.208577] CPU: 0 PID: 5955 Comm: stress-ng-opcod Tainted: G
     E     5.11.0-rc1-00073-g3516bd729358 #173
[  813.208618] TSTATE: 0000000080e01602 TPC: 00000000004cf720 TNPC:
00000000004cf724 Y: 00000000    Tainted: G            E
[  813.208659] TPC: <lock_acquire+0x100/0x200>
[  813.208680] g0: 0000000000000000 g1: 0000000000000001 g2:
0000000000004023 g3: 0000000001502400
[  813.208712] g4: fff800004a9faf80 g5: 794b00a7d5ede977 g6:
fff800004071c000 g7: 00000000ffffffff
[  813.208744] o0: 0000000000000007 o1: 0000000000dd6070 o2:
fff800004058bb30 o3: 0000000000000000
[  813.208779] o4: 0000000000000034 o5: 000000000000000b sp:
fff800004058aaf1 ret_pc: 000000000042aa84
[  813.208812] RPC: <sun4v_do_mna+0x24/0xa0>
[  813.208836] l0: 00000000010e11c0 l1: 0000000000edbc78 l2:
000000000048f2c0 l3: 0000000000000020
[  813.208869] l4: 794b00a7d6fbfb37 l5: 00000000000e0000 l6:
fff800004071c000 l7: 0000000080001002
[  813.208901] i0: 0000000000f737a8 i1: 0000000000000000 i2:
0000000000000000 i3: 0000000000000002
[  813.208933] i4: 00000000010e11c0 i5: 0000000000000000 i6:
fff800004058abc1 i7: 000000000048f2f0
[  813.208966] I7: <atomic_notifier_call_chain+0x30/0xc0>
[  813.208993] Call Trace:
[  813.209008] Disabling lock debugging due to kernel taint
[  813.209016] Instruction DUMP:
[  813.209019]  21004384
[  813.209025]  a01421c0
[  813.209031]  b8100010
[  813.209037] <c2070005>
[  813.209043]  80a06000
[  813.209049]  1240001d
[  813.209054]  01000000
[  813.209060]  c2012874
[  813.209065]  80a06000
[  813.209071]
[  813.209142] CPU[0]: Args were cnt(1) cpulist_pa(34c4a000)
mondo_block_pa(3040d680)
[  813.209160] Kernel panic - not syncing: Unexpected SUN4V mondo error 6
[  813.210744] sun4v_cpu_stop() failed err=6
[  813.211316] Press Stop-A (L1-A) from sun keyboard or send break
[  813.211316] twice on console to return to the boot prom
[  813.211327] ---[ end Kernel panic - not syncing: Unexpected SUN4V
mondo error 6 ]---

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