Upstream fixed this in device-mapper with:
Author: Mike Snitzer <[email protected]>
dm: fix potential for q->make_request_fn NULL pointer
This is to be included in:
Xenial: Ubuntu-4.4.0-177.207 (committed)
Bionic: Ubuntu-4.15.0-92.93 (committed, not prepared yet)
Eoan: Ubuntu-5.3.0-43.35 (committed)
Focal: Ubuntu-5.4.0-15.18 (released, revert of SAUCE committed)
** Changed in: linux (Ubuntu Xenial)
Status: New => Fix Committed
** Changed in: linux (Ubuntu Bionic)
Status: New => Fix Committed
** Changed in: linux (Ubuntu Disco)
Status: New => Fix Committed
** Changed in: linux (Ubuntu Xenial)
Importance: Undecided => High
** Changed in: linux (Ubuntu Bionic)
Importance: Undecided => High
** Changed in: linux (Ubuntu Disco)
Importance: Undecided => High
** Changed in: linux (Ubuntu Eoan)
Status: New => Fix Committed
** Changed in: linux (Ubuntu)
Status: Triaged => Fix Released
** Changed in: linux (Ubuntu Eoan)
Importance: Undecided => High
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https://bugs.launchpad.net/bugs/1860231
Title:
5.4.0-11 crash on cryptsetup open
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