mok: relax the maximum variable size check #369
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Some UEFI environment such as u-boot doesn't implement QueryVariableInfo(), so we couldn't rely on the function to estimate the available space for RT variables. All we can do is to call SetVariable() directly and check the return value of SetVariable(). Signed-off-by: Gary Lin <[email protected]>
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It's worth pointing out that some firmware implementations (Apple 2.40) even lie and tell you they have space but then die/hang when you try to write :D |
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We had a similar case that the firmware lied about the space, but the firmware kindly returned EFI_OUT_OF_RESOURCES :-p |
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+1 on merging We got hit by this too https://bugs.launchpad.net/ubuntu/+source/shim/+bug/1934780 and verified this fixes it. Thanks! |
julian-klode
approved these changes
Jul 6, 2021
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Some UEFI environment such as u-boot doesn't implement
QueryVariableInfo(), so we couldn't rely on the function to estimate the
available space for RT variables. All we can do is to call SetVariable()
directly and check the return value of SetVariable().
Signed-off-by: Gary Lin [email protected]