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Differential D19595

sgx: Don't attach if EPC data is corrupted.
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Authored by kd on Mar 15 2019, 4:21 PM.
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br
mw
mst_semihalf.com
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rS345288: Prevent loading SGX with incorrect EPC data
Summary

On my machine even if sgx is disabled in firmware the driver still tries to attach with EPS base and size equal to zeroes.
Such behavior results in kernel panic when the module is unloaded.
This is probably caused by a crappy firmware.
Add a simple check to make sure that those values are not zeroes.

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rS FreeBSD src repository - subversion
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Event Timeline

kd created this revision.Mar 15 2019, 4:21 PM
Herald added a subscriber: imp. · View Herald TranscriptMar 15 2019, 4:21 PM
br accepted this revision.Mar 15 2019, 4:33 PM
This revision is now accepted and ready to land.Mar 15 2019, 4:33 PM
Closed by commit rS345288: Prevent loading SGX with incorrect EPC data (authored by mw). · Explain WhyMar 19 2019, 2:34 AM
This revision was automatically updated to reflect the committed changes.

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head/
sys/
amd64/
sgx/
6 lines

Diff 55219

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head/sys/amd64/sgx/sgx.c

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