Messages in this thread | | | From | NOMURA JUNICHI(野村 淳一) <> | Subject | RE: [Regression v5.19-rc1] crash kexec fails to boot the 2nd kernel (Re: [PATCH v12 38/46] x86/sev: Add SEV-SNP feature detection/setup) | Date | Fri, 24 Jun 2022 10:14:58 +0000 |
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From: Borislav Petkov <bp@alien8.de> > What system is this? Full dmesg and .config pls. > > How exactly are you launching the kexec kernel, etc, etc?
dmesg, kernel config and a script to load kexec is attached.
I could reproduce the problem as followings:
# ./kexec-p-noinitrd.sh # cat /sys/kernel/kexec_crash_loaded 1 # echo c > /proc/sysrq-trigger
If the problem reproduces, the system stops or resets just after showing a call trace of sysrq-panic on console. On kernels without problem, it should show boot messages from the 2nd kernel after the sysrq-panic call trace.
When I use "--noefi" option of kexec, the problem didn't occur. So I think you need EFI-based system to reproduce the problem.
-- Jun'ichi Nomura, NEC Corporation / NEC Solution Innovators, Ltd.
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