Looking at the code, it seems that this commit removed the setting/restore of mmu_cr4_features, and the crash happens when it loads probably an invalid mmu_cr4_features
And indeed that's the case, today I saw this commit coming in in Linus tree:
commit 4da9484bdece39ab0b098fa711e095e3e9fc8684
Author: H. Peter Anvin <email address hidden>
Date: Wed Apr 6 13:10:02 2011 -0700
x86, hibernate: Initialize mmu_cr4_features during boot
Restore the initialization of mmu_cr4_features during boot, which was
removed without comment in checkin e5f15b45ddf3afa2bbbb10c7ea34fb32b6de0a0e
x86: Cleanup highmap after brk is concluded
thereby breaking resume from hibernate. This restores previous
functionality in approximately the same place, and corrects the
reading of %cr4 on pre-CPUID hardware (%cr4 exists if and only if
CPUID is supported.)
However, part of the problem is that the hibernate suspend/resume
sequence should manage the save/restore of %cr4 explicitly.
Signed-off-by: H. Peter Anvin <email address hidden>
Cc: Rafael J. Wysocki <email address hidden>
Cc: Stefano Stabellini <email address hidden>
Cc: Yinghai Lu <email address hidden>
LKML-Reference: <email address hidden>
Looking at the code, it seems that this commit removed the setting/restore of mmu_cr4_features, and the crash happens when it loads probably an invalid mmu_cr4_features
And indeed that's the case, today I saw this commit coming in in Linus tree: b0b098fa711e095 e3e9fc8684
commit 4da9484bdece39a
Author: H. Peter Anvin <email address hidden>
Date: Wed Apr 6 13:10:02 2011 -0700
x86, hibernate: Initialize mmu_cr4_features during boot
Restore the initialization of mmu_cr4_features during boot, which was 2bbbb10c7ea34fb 32b6de0a0e
removed without comment in checkin e5f15b45ddf3afa
x86: Cleanup highmap after brk is concluded
thereby breaking resume from hibernate. This restores previous
functionality in approximately the same place, and corrects the
reading of %cr4 on pre-CPUID hardware (%cr4 exists if and only if
CPUID is supported.)
However, part of the problem is that the hibernate suspend/resume
sequence should manage the save/restore of %cr4 explicitly.
Signed-off-by: H. Peter Anvin <email address hidden>
Cc: Rafael J. Wysocki <email address hidden>
Cc: Stefano Stabellini <email address hidden>
Cc: Yinghai Lu <email address hidden>
LKML-Reference: <email address hidden>
and it fixes the bug for me too, testing here