Le 24/04/18 à 14:50, Greg KH a écrit : > On Tue, Apr 24, 2018 at 02:40:18PM +0200, François Valenduc wrote: >> >> Le 24/04/18 à 14:31, Greg KH a écrit : >>> On Tue, Apr 24, 2018 at 01:52:19PM +0200, François Valenduc wrote: >>> > >>>> This version doens't boot on my computer. I am using gentoo with an >>>> encrypted root partition using ext4. After that I have entered the >>>> password, the root partition can not be mounted. I have bisected it to >>>> the following commit: >>>> >>>> commit 26dbb30c58ffb85bc015bd5e58831483d50f7d18 >>>> Author: Theodore Ts'o <tytso@xxxxxxx> >>>> Date: Thu Mar 29 22:10:31 2018 -0400 >>>> >>>> ext4: always initialize the crc32c checksum driver >>>> >>>> commit a45403b51582a87872927a3e0fc0a389c26867f1 upstream. >>>> >>>> The extended attribute code now uses the crc32c checksum for hashing >>>> purposes, so we should just always always initialize it. We also want >>>> to prevent NULL pointer dereferences if one of the metadata checksum >>>> features is enabled after the file sytsem is originally mounted. >>>> >>>> This issue has been assigned CVE-2018-1094. >>>> >>>> https://bugzilla.kernel.org/show_bug.cgi?id=199183 >>>> https://bugzilla.redhat.com/show_bug.cgi?id=1560788 >>>> >>>> Signed-off-by: Theodore Ts'o <tytso@xxxxxxx> >>>> Cc: stable@xxxxxxxxxxxxxxx >>>> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> >>>> >>>> Indeed, if I revert this commit, the problem doesn't occur. 4.16.4 also >>>> fails to boot, probably for the same reason, since this commit is also >>>> included. >>>> >>>> Does anybody know what is happening ? >>> That's really odd. Do we not have "enough" randomness at boot time? >>> Does 4.17-rc2 also fail in this same way? >>> >>> Ted, any ideas? >>> >>> thanks, >>> >>> greg k-h >> I can't know if 4.17-rc2 has the same problem, because it doesn't boot >> for another reason. It hangs while loading the initrd image. > Could that be the same reason? Did 4.17-rc1 work for you? > > thanks, > > greg k-h With 4.16.4 or 4.14.35, I can at least enter my password. The problem occurs when mounting the root partition afterwards. With 4.17-rc2 and rc1, it hangs before. François Valenduc