Project Number Date
test_Tails_ISO_update-design-doc 1 17 Sep 2026, 19:12

Feature Report

Steps Scenarios Features
Feature Passed Failed Skipped Pending Undefined Total Passed Failed Total Duration Status
System memory erasure on shutdown 51 0 0 0 0 51 6 0 6 7:27.810 Passed
Tags: @product @slow @not_release_blocker
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.
Tags: @product @slow @not_release_blocker
20.874
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.002
Given I have started Tails from DVD without network and logged in 7.021
And I prepare Tails for memory erasure tests 0.343
When I start a process allocating 128 MiB of memory with a known pattern 2.367
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 2.930 
Pattern coverage: 100.395% (127 MiB out of 127 MiB reference memory)
When I kill the allocating process 0.196
Then I find very few patterns in the guest's memory after 5 seconds 8.013 
Pattern coverage: 0.000% (0 MiB out of 1423 MiB reference memory)
After features/support/hooks.rb:339 0.966
After features/support/hooks.rb:108 0.000
Tags: @product @slow @not_release_blocker
20.835
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.003
Given I have started Tails from DVD without network and logged in 6.657
And I prepare Tails for memory erasure tests 0.303
And I find very few patterns in the guest's memory 2.769 
Pattern coverage: 0.000% (0 MiB out of 1412 MiB reference memory)
When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.375
Then patterns cover at least 99% of the test FS size in the guest's memory 2.990 
Pattern coverage: 100.000% (128 MiB out of 128 MiB reference memory)
When I umount "/mnt" 0.391
Then I find very few patterns in the guest's memory after 3 seconds 6.347 
Pattern coverage: 0.000% (0 MiB out of 1412 MiB reference memory)
After features/support/hooks.rb:339 0.973
After features/support/hooks.rb:108 0.000
Tags: @product @slow @not_release_blocker
38.288
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.007
Given I have started Tails from DVD without network and logged in 6.747
And I prepare Tails for memory erasure tests 0.340
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.364
Then I find very few patterns in the guest's memory 2.997 
Pattern coverage: 0.000% (0 MiB out of 1419 MiB reference memory)
# write cache
When I fill the USB drive with a known pattern 2.642
Then patterns cover at least 75% of the test FS size in the guest's memory 3.468 
Pattern coverage: 100.000% (127 MiB out of 127 MiB reference memory)
When I umount the USB drive 0.651
Then I find very few patterns in the guest's memory after 3 seconds 5.795 
Pattern coverage: 0.000% (0 MiB out of 1419 MiB reference memory)
# read cache
When I mount the USB drive again 0.178
And I read the content of the test FS 0.581
Then patterns cover at least 99% of the test FS size in the guest's memory 2.924 
Pattern coverage: 100.000% (127 MiB out of 127 MiB reference memory)
When I umount the USB drive 0.421
Then I find very few patterns in the guest's memory after 3 seconds 6.176 
Pattern coverage: 0.000% (0 MiB out of 1419 MiB reference memory)
After features/support/hooks.rb:339 1.150
After features/support/hooks.rb:108 0.000
Tags: @product @slow @not_release_blocker
58.701
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.002
Given I have started Tails from DVD without network and logged in 6.525
And I prepare Tails for memory erasure tests 0.391
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 23.982
Then I find very few patterns in the guest's memory 3.180 
Pattern coverage: 0.000% (0 MiB out of 1414 MiB reference memory)
# write cache
When I fill the USB drive with a known pattern 1.215
Then patterns cover at least 99% of the test FS size in the guest's memory 4.082 
Pattern coverage: 106.115% (97 MiB out of 91 MiB reference memory)
When I umount the USB drive 0.488
Then I find very few patterns in the guest's memory after 3 seconds 6.234 
Pattern coverage: 0.000% (0 MiB out of 1414 MiB reference memory)
# read cache
When I mount the USB drive again 2.823
And I read the content of the test FS 0.354
Then patterns cover at least 99% of the test FS size in the guest's memory 2.958 
Pattern coverage: 106.115% (97 MiB out of 91 MiB reference memory)
When I umount the USB drive 0.383
Then I find very few patterns in the guest's memory after 3 seconds 6.079 
Pattern coverage: 0.000% (0 MiB out of 1414 MiB reference memory)
After features/support/hooks.rb:339 1.057
After features/support/hooks.rb:108 0.000
Tags: @product @slow @not_release_blocker
43.985
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.002
Given I have started Tails from DVD without network and logged in 6.442
And I prepare Tails for memory erasure tests 0.305
When I fill a 128 MiB file with a known pattern on the root filesystem 12.331
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.779
Then patterns cover at least 128 MiB in the guest's memory 2.282 
Pattern coverage: 100.000% (128 MiB out of 128 MiB reference memory)
When I trigger shutdown 0.006
Then I find very few patterns in the guest's memory after 20 seconds 20.836 
Pattern coverage: 0.000% (0 MiB out of 1407 MiB reference memory)
After features/support/hooks.rb:339 3.600
After features/support/hooks.rb:108 0.000
Tags: @product @slow @not_release_blocker
4:25.125
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.002
Given I have started Tails without network from a USB drive with a persistent partition enabled and logged in 3:53.777
And I prepare Tails for memory erasure tests 0.355
When I fill a 128 MiB file with a known pattern on the persistent filesystem 9.848
When I trigger shutdown 0.005
Then I find very few patterns in the guest's memory after 20 seconds 21.138 
Pattern coverage: 0.000% (0 MiB out of 1409 MiB reference memory)
After features/support/hooks.rb:339 3.566
After features/support/hooks.rb:108 0.010