Project Number Date
test_Tails_ISO_devel 4082 21 Nov 2025, 12:40

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 18:34.433 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
1:2.558
Before features/support/hooks.rb:266 0.000
Before features/support/hooks.rb:273 0.022
Given I have started Tails from DVD without network and logged in 9.802
And I prepare Tails for memory erasure tests 0.455
When I start a process allocating 128 MiB of memory with a known pattern 2.406
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 23.591 
Pattern coverage: 100.394% (127 MiB out of 127 MiB reference memory)
When I kill the allocating process 0.233
Then I find very few patterns in the guest's memory after 5 seconds 26.069 
Pattern coverage: 0.000% (0 MiB out of 1496 MiB reference memory)
After features/support/hooks.rb:331 1.070
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
2:4.447
Before features/support/hooks.rb:266 0.000
Before features/support/hooks.rb:273 0.003
Given I have started Tails from DVD without network and logged in 8.922
And I prepare Tails for memory erasure tests 0.444
And I find very few patterns in the guest's memory 26.745 
Pattern coverage: 0.000% (0 MiB out of 1495 MiB reference memory)
When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.605
Then patterns cover at least 99% of the test FS size in the guest's memory 44.218 
Pattern coverage: 100.000% (128 MiB out of 128 MiB reference memory)
When I umount "/mnt" 0.490
Then I find very few patterns in the guest's memory after 3 seconds 42.020 
Pattern coverage: 0.000% (0 MiB out of 1495 MiB reference memory)
After features/support/hooks.rb:331 0.769
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
1:50.945
Before features/support/hooks.rb:266 0.000
Before features/support/hooks.rb:273 0.002
Given I have started Tails from DVD without network and logged in 8.698
And I prepare Tails for memory erasure tests 0.455
When I plug and mount a 128 MiB USB drive with a vfat filesystem 7.604
Then I find very few patterns in the guest's memory 15.689 
Pattern coverage: 0.000% (0 MiB out of 1497 MiB reference memory)
# write cache
When I fill the USB drive with a known pattern 2.748
Then patterns cover at least 75% of the test FS size in the guest's memory 22.096 
Pattern coverage: 100.000% (127 MiB out of 127 MiB reference memory)
When I umount the USB drive 1.035
Then I find very few patterns in the guest's memory after 3 seconds 16.814 
Pattern coverage: 0.000% (0 MiB out of 1497 MiB reference memory)
# read cache
When I mount the USB drive again 0.210
And I read the content of the test FS 0.757
Then patterns cover at least 99% of the test FS size in the guest's memory 17.189 
Pattern coverage: 100.000% (127 MiB out of 127 MiB reference memory)
When I umount the USB drive 0.635
Then I find very few patterns in the guest's memory after 3 seconds 17.008 
Pattern coverage: 0.000% (0 MiB out of 1497 MiB reference memory)
After features/support/hooks.rb:331 1.824
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
2:18.567
Before features/support/hooks.rb:266 0.000
Before features/support/hooks.rb:273 0.003
Given I have started Tails from DVD without network and logged in 8.978
And I prepare Tails for memory erasure tests 0.449
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 32.004
Then I find very few patterns in the guest's memory 18.559 
Pattern coverage: 0.000% (0 MiB out of 1499 MiB reference memory)
# write cache
When I fill the USB drive with a known pattern 2.052
Then patterns cover at least 99% of the test FS size in the guest's memory 14.215 
Pattern coverage: 106.115% (97 MiB out of 91 MiB reference memory)
When I umount the USB drive 0.697
Then I find very few patterns in the guest's memory after 3 seconds 16.210 
Pattern coverage: 0.000% (0 MiB out of 1499 MiB reference memory)
# read cache
When I mount the USB drive again 4.210
And I read the content of the test FS 0.446
Then patterns cover at least 99% of the test FS size in the guest's memory 17.686 
Pattern coverage: 106.115% (97 MiB out of 91 MiB reference memory)
When I umount the USB drive 1.332
Then I find very few patterns in the guest's memory after 3 seconds 21.723 
Pattern coverage: 0.000% (0 MiB out of 1499 MiB reference memory)
After features/support/hooks.rb:331 1.017
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
1:1.144
Before features/support/hooks.rb:266 0.000
Before features/support/hooks.rb:273 0.004
Given I have started Tails from DVD without network and logged in 8.831
And I prepare Tails for memory erasure tests 0.452
When I fill a 128 MiB file with a known pattern on the root filesystem 9.891
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 2.842
Then patterns cover at least 128 MiB in the guest's memory 15.267 
Pattern coverage: 100.000% (128 MiB out of 128 MiB reference memory)
When I trigger shutdown 0.014
Then I find very few patterns in the guest's memory after 20 seconds 23.844 
Pattern coverage: 0.000% (0 MiB out of 1489 MiB reference memory)
After features/support/hooks.rb:331 3.661
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
10:16.770
Before features/support/hooks.rb:266 0.000
Before features/support/hooks.rb:273 0.002
Given I have started Tails without network from a USB drive with a persistent partition enabled and logged in 9:19.760
And I prepare Tails for memory erasure tests 0.382
When I fill a 128 MiB file with a known pattern on the persistent filesystem 22.955
When I trigger shutdown 0.010
Then I find very few patterns in the guest's memory after 20 seconds 33.661 
Pattern coverage: 0.000% (0 MiB out of 1499 MiB reference memory)
After features/support/hooks.rb:331 3.928
After features/support/hooks.rb:100 0.021