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@product
Feature: System memory erasure on shutdown
As a Tails user
when I shutdown Tails
I want the system memory to be free from sensitive data.
Scenario: Anti-test: no memory erasure on a modern computer
Given a computer
And the computer is a modern 64-bit system
And the computer has 8 GiB of RAM
And I set Tails to boot with options "debug=wipemem"
And I start Tails from DVD with network unplugged and I login
Then the PAE kernel is running
And at least 8 GiB of RAM was detected
And process "memlockd" is running
And process "udev-watchdog" is running
When I fill the guest's memory with a known pattern without verifying
And I reboot without wiping the memory
Then I find many patterns in the guest's memory
Scenario: Memory erasure on a modern computer
Given a computer
And the computer is a modern 64-bit system
And the computer has 8 GiB of RAM
And I set Tails to boot with options "debug=wipemem"
And I start Tails from DVD with network unplugged and I login
Then the PAE kernel is running
And at least 8 GiB of RAM was detected
And process "memlockd" is running
And process "udev-watchdog" is running
When I fill the guest's memory with a known pattern
And I shutdown and wait for Tails to finish wiping the memory
Then I find very few patterns in the guest's memory
Scenario: Anti-test: no memory erasure on an old computer
Given a computer
And the computer is an old pentium without the PAE extension
And the computer has 8 GiB of RAM
And I set Tails to boot with options "debug=wipemem"
And I start Tails from DVD with network unplugged and I login
Then the non-PAE kernel is running
And at least 3500 MiB of RAM was detected
And process "memlockd" is running
And process "udev-watchdog" is running
When I fill the guest's memory with a known pattern without verifying
And I reboot without wiping the memory
Then I find many patterns in the guest's memory
Scenario: Memory erasure on an old computer
Given a computer
And the computer is an old pentium without the PAE extension
And the computer has 8 GiB of RAM
And I set Tails to boot with options "debug=wipemem"
And I start Tails from DVD with network unplugged and I login
And the non-PAE kernel is running
And at least 3500 MiB of RAM was detected
And process "memlockd" is running
And process "udev-watchdog" is running
When I fill the guest's memory with a known pattern
And I shutdown and wait for Tails to finish wiping the memory
Then I find very few patterns in the guest's memory
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