Messages in this thread | | | Subject | Re: [PATCH 5.4 00/57] 5.4.70-rc1 review | From | Ben Hutchings <> | Date | Tue, 06 Oct 2020 15:49:19 +0100 |
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On Tue, 2020-10-06 at 13:55 +0530, Naresh Kamboju wrote: [...] > NOTE: > While running LTP containers test suite, > I noticed this kernel panic on arm64 Juno-r2 devices. > Not easily reproducible and not seen on any other arm64 devices. > > steps to reproduce: > --------------------------- > # boot stable rc 5.4.70 kernel on juno-r2 machine > # cd /opt/ltp > # ./runltp -f containers > > Crash log, > --------------- > pidns13 0 TINFO : cinit2: writing some data in pipe > pidns13 0 TINFO : cinit1: setup handler for async I/O on pipe > pidns13 1 TPASS : cinit1: si_fd is 6, si_code is 1 > [ 122.275627] Internal error: synchronous external abort: 96000210 > [#1] PREEMPT SMP [...] > [ 122.399545] Call trace: > [ 122.401995] sil24_interrupt+0x28/0x5f0 [...] > [ 122.467321] Code: d503201f f9400ac0 f9400014 91011294 (b9400294) [...]
This corresponds to the statement:
status = readl(host_base + HOST_IRQ_STAT);
So it looks like the PCI device stopped responding to MMIO for some reason. It could be faulty hardware. I don't see any sign of run-time power management in that driver that might explain it.
Ben.
-- Ben Hutchings, Software Developer Codethink Ltd https://www.codethink.co.uk/ Dale House, 35 Dale Street Manchester, M1 2HF, United Kingdom
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