[Bug 1829730] [NEW] init hangs when debug is specified

[Bas Zoetekouw]

Public bug reported:

When specifying "debug" on the kernel command line in order to catch
initramfs debug info, the init hangs.  It's quite early in the boot
process (certainly before pre-mount is called, as I don't see anything
relating to btrfs scan and resuming from hibernation).

╰─▶ uname -a
Linux regan 5.0.0-13-generic #14-Ubuntu SMP Mon Apr 15 14:59:14 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

╰─▶ dpkg -l initramfs-tools
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name            Version      Architecture Description
+++-===============-============-============-================================================
ii  initramfs-tools 0.133ubuntu2 all          generic modular initramfs generator (automation)

╰─▶ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu Eoan Ermine (development branch)
Release:	19.10
Codename:	eoan

** Affects: initramfs-tools (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  When specifying "debug" on the kernel command line in order to catch
  initramfs debug info, the init hangs.  It's quite early in the boot
  process (certainly before pre-mount is called, as I don't see anything
  relating to btrfs scan and resuming from hibernation).
+ 
+ ╰─▶ uname -a
+ Linux regan 5.0.0-13-generic #14-Ubuntu SMP Mon Apr 15 14:59:14 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
+ 
+ ╰─▶ dpkg -l initramfs-tools
+ Desired=Unknown/Install/Remove/Purge/Hold
+ | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
+ |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
+ ||/ Name            Version      Architecture Description
+ +++-===============-============-============-================================================
+ ii  initramfs-tools 0.133ubuntu2 all          generic modular initramfs generator (automation)
+ 
+ ╰─▶ lsb_release -a
+ No LSB modules are available.
+ Distributor ID:	Ubuntu
+ Description:	Ubuntu Eoan Ermine (development branch)
+ Release:	19.10
+ Codename:	eoan

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https://bugs.launchpad.net/bugs/1829730

Title:
  init hangs when debug is specified

Status in initramfs-tools package in Ubuntu:
  New

Bug description:
  When specifying "debug" on the kernel command line in order to catch
  initramfs debug info, the init hangs.  It's quite early in the boot
  process (certainly before pre-mount is called, as I don't see anything
  relating to btrfs scan and resuming from hibernation).

  ╰─▶ uname -a
  Linux regan 5.0.0-13-generic #14-Ubuntu SMP Mon Apr 15 14:59:14 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

  ╰─▶ dpkg -l initramfs-tools
  Desired=Unknown/Install/Remove/Purge/Hold
  | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
  |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
  ||/ Name            Version      Architecture Description
  +++-===============-============-============-================================================
  ii  initramfs-tools 0.133ubuntu2 all          generic modular initramfs generator (automation)

  ╰─▶ lsb_release -a
  No LSB modules are available.
  Distributor ID:	Ubuntu
  Description:	Ubuntu Eoan Ermine (development branch)
  Release:	19.10
  Codename:	eoan

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