Messages in this thread | | | From | Dexuan Cui <> | Subject | RE: [PATCH 1/1 v9] use crc32 instead of md5 for hibernation e820 integrity check | Date | Mon, 19 Apr 2021 23:33:20 +0000 |
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> From: Chris von Recklinghausen <crecklin@redhat.com> > Sent: Friday, April 16, 2021 6:17 AM > ... > Hibernation fails on a system in fips mode because md5 is used for the e820 > integrity check and is not available. Use crc32 instead. > > The check is intended to detect whether the E820 memory map provided > by the firmware after cold boot unexpectedly differs from the one that > was in use when the hibernation image was created. In this case, the > hibernation image cannot be restored, as it may cover memory regions > that are no longer available to the OS. > > A non-cryptographic checksum such as CRC-32 is sufficient to detect such > inadvertent deviations. > > Fixes: 62a03defeabd ("PM / hibernate: Verify the consistent of e820 memory > map > by md5 digest") > > Signed-off-by: Chris von Recklinghausen <crecklin@redhat.com> > ---
Tested-by: Dexuan Cui <decui@microsoft.com> Reviewed-by: Dexuan Cui <decui@microsoft.com>
Thanks Chris and all for the patch!
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