[Pkg-uml-pkgs] Bug#888971: /usr/bin/linux.uml: random segfault in uml mm

[Ritesh Raj Sarraf]

Package: user-mode-linux
Version: 4.14-1um-2
Severity: grave
File: /usr/bin/linux.uml
Tags: upstream
Justification: renders package unusable


Random segfault is seen with latest uml. Needs investigation. Let's not
let this propagate to testing.


[  OK  ] Started Getty on tty1.
[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.
Option “-t” is deprecated and might be removed in a later version of gnome-terminal.
                                                                                    random: crng init done
io_thread - read failed, fd = 5, err = 4,reminder = 0

Modules linked in:

Modules linked in:
Pid: -1664957768, comm:  Not tainted 4.14.13
RIP: 0033:[<00000000603e5e5e>]
RSP: 00000000a0cc4230  EFLAGS: 00010206
RAX: 0000000060bb6030 RBX: 000000009d583000 RCX: 0000000000000075
RDX: 00000000000004dd RSI: 00000000a0cc4000 RDI: 00000000609ca277
RBP: 000000006041735e R08: 0000000060a74906 R09: 00000000609cf8ec
R10: 000000000000000b R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00000000a0cc4530
Kernel panic - not syncing: Segfault with no mm
/home/rrs/bin/uml-debian: line 5: 26639 Killed                  linux ubd0=~/rrs-home/NoTrack/uml.img eth0=daemon mem=1024M rw
23:16 ♒♒♒    ☹  => 137  



-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (900, 'testing'), (500, 'unstable-debug'), (500, 'testing-debug'), (500, 'unstable'), (100, 'experimental'), (1, 'experimental-debug')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.14.0-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_IN, LC_CTYPE=en_IN (charmap=UTF-8), LANGUAGE=en_IN:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages user-mode-linux depends on:
ii  libc6  2.26-4

Versions of packages user-mode-linux recommends:
ii  uml-utilities  20070815.1-2+b2

Versions of packages user-mode-linux suggests:
ii  gnome-terminal [x-terminal-emulator]  3.26.2-3
pn  rootstrap                             <none>
pn  slirp                                 <none>
ii  tilix [x-terminal-emulator]           1.7.1-2
ii  user-mode-linux-doc                   20060501-2
pn  vde2                                  <none>
ii  xterm [x-terminal-emulator]           331-1

-- no debconf information