lkml.org 
[lkml]   [2020]   [Jul]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: PROBLEM: cryptsetup fails to unlock drive in 5.8-rc6 (regression)
On Thu, Jul 23, 2020 at 11:51:01AM -0400, Nick Bowler wrote:
> Hi,
>
> After installing Linux 5.8-rc6, it seems cryptsetup can no longer
> open LUKS volumes. Regardless of the entered passphrase (correct
> or otherwise), the result is a very unhelpful "Keyslot open failed."
> message.
>
> On the kernels which fail, I also noticed that the cryptsetup
> benchmark command appears to not be able to determine that any
> ciphers are available (output at end of message), possibly for
> the same reason.
>
> Bisected to the following commit, which suggests a problem specific
> to compat userspace (this is amd64 kernel). I tested both ia32 and
> x32 userspace to confirm the problem. Reverting this commit on top
> of 5.8-rc6 resolves the issue.
>
> Looking at strace output the failing syscall appears to be:
>
> sendmsg(8, {msg_name=NULL, msg_namelen=0,
> msg_iov=[{iov_base=..., iov_len=512}], msg_iovlen=1,
> msg_control=[{cmsg_len=16, cmsg_level=SOL_ALG,
> cmsg_type=0x3}, {cmsg_len=32, cmsg_level=SOL_ALG,
> cmsg_type=0x2}], msg_controllen=48, msg_flags=0}, 0)
> = -1 EINVAL (Invalid argument)

Huh? Just in case - could you verify that on the kernel with that
commit reverted the same sendmsg() succeeds?

\
 
 \ /
  Last update: 2020-07-27 18:06    [W:0.071 / U:0.640 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site