[RTEMS Project] #4144: fileio - Stack too small for login with password (cloned)

RTEMS trac trac at rtems.org
Mon Oct 12 13:21:05 UTC 2020

#4144: fileio - Stack too small for login with password (cloned)
  Reporter:  Frank          |      Owner:  joel@…
  Kuehndel                  |
      Type:  defect         |     Status:  new
  Priority:  normal         |  Milestone:  5.2
 Component:  test           |    Version:  5
  Severity:  minor          |   Keywords:  fileio,stack,password,login,root
Blocked By:                 |   Blocking:
 Cloned from #4143:
 When I use the 'shell' from the fileio sample with the command below:

    env QEMU_AUDIO_DRV="none" \
    qemu-system-arm -no-reboot -net none -nographic -M realview-pbx-a9 -m
 256M \
    -kernel build/arm/realview_pbx_a9_qemu/testsuites/samples/fileio.exe

 The executable crashes with an "BLOWN STACK!!!" as soon as I try to login
 as 'root' with password. (The logins without password work fine.)
 the stack size of the affected thread a bit (to 5 times
 RTEMS_MINIMUM_STACK_SIZE) solves the issue.

 How to reproduce:

 1. Start the fileio sample in QEMU with the above command.

 2. Type a key to stop the timer.

 3. Type "s" <return> to enter the shell.

 4. Login as "root" with the password printed to the terminal.

 5. In the line with the first shell prompt, the text "BLOWN STACK!!!"
 appears unexpectedly followed by further crash information.

 /dev/foobar login: root

 RTEMS Shell on /dev/foobar. Use 'help' to list commands.
 task control block: 0x00205278

Ticket URL: <http://devel.rtems.org/ticket/4144>
RTEMS Project <http://www.rtems.org/>
RTEMS Project

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