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UEFI ResetSystem() crashes #41

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qzed opened this issue Jul 22, 2022 · 2 comments
Open

UEFI ResetSystem() crashes #41

qzed opened this issue Jul 22, 2022 · 2 comments
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UEFI Area: UEFI

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@qzed
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qzed commented Jul 22, 2022 •
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Calling the UEFI ResetSystem() function causes an oops. In contrast to the variable and RTC functions, this function should be supported (as can inferred by it crashing rather than returning EFI_UNSUPPORTED). My current theory is that it expects to be called in some kind of state that we're not fulfilling.

We're currently working around with a hack, preventing ResetSystem() from being called.
@qzed qzed added the UEFI Area: UEFI label Jul 22, 2022
@qzed qzed mentioned this issue Jul 23, 2022
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qzed commented Jan 16, 2023 •
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Some debug info with the efi=debug command line option (as well as various others to prevent the display from being taken over and thus the crash from being hidden):

Tested on v6.0.6.

@qzed
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qzed commented Jan 23, 2023 •
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After linux-surface/kernel@8a9a1a1, the kernel can now recover from an EFI page fault. This means that reboot and poweroff fall back to the architecture functions.

Log for reboot with do_kernel_restart() commented out: log.jpg

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