Project Number Date
test_Tails_ISO_update-design-doc 3 19 Sep 2026, 06:34

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 7:16.834 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
20.448
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 6.398
And I prepare Tails for memory erasure tests 0.334
When I start a process allocating 128 MiB of memory with a known pattern 2.206
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 3.007 
Pattern coverage: 100.395% (127 MiB out of 127 MiB reference memory)
When I kill the allocating process 0.708
Then I find very few patterns in the guest's memory after 5 seconds 7.794 
Pattern coverage: 0.000% (0 MiB out of 1411 MiB reference memory)
After features/support/hooks.rb:339 0.745
After features/support/hooks.rb:108 0.000
Tags: @product @slow @not_release_blocker
19.914
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 6.303
And I prepare Tails for memory erasure tests 0.324
And I find very few patterns in the guest's memory 2.591 
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 1.374
Then patterns cover at least 99% of the test FS size in the guest's memory 3.050 
Pattern coverage: 100.000% (128 MiB out of 128 MiB reference memory)
When I umount "/mnt" 0.343
Then I find very few patterns in the guest's memory after 3 seconds 5.927 
Pattern coverage: 0.000% (0 MiB out of 1412 MiB reference memory)
After features/support/hooks.rb:339 0.867
After features/support/hooks.rb:108 0.000
Tags: @product @slow @not_release_blocker
36.360
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 6.288
And I prepare Tails for memory erasure tests 0.328
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.181
Then I find very few patterns in the guest's memory 2.715 
Pattern coverage: 0.000% (0 MiB out of 1407 MiB reference memory)
# write cache
When I fill the USB drive with a known pattern 2.457
Then patterns cover at least 75% of the test FS size in the guest's memory 3.509 
Pattern coverage: 100.000% (127 MiB out of 127 MiB reference memory)
When I umount the USB drive 0.667
Then I find very few patterns in the guest's memory after 3 seconds 5.619 
Pattern coverage: 0.000% (0 MiB out of 1407 MiB reference memory)
# read cache
When I mount the USB drive again 0.178
And I read the content of the test FS 0.527
Then patterns cover at least 99% of the test FS size in the guest's memory 2.985 
Pattern coverage: 100.000% (127 MiB out of 127 MiB reference memory)
When I umount the USB drive 0.372
Then I find very few patterns in the guest's memory after 3 seconds 5.529 
Pattern coverage: 0.000% (0 MiB out of 1407 MiB reference memory)
After features/support/hooks.rb:339 0.911
After features/support/hooks.rb:108 0.000
Tags: @product @slow @not_release_blocker
1:0.755
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 6.426
And I prepare Tails for memory erasure tests 0.329
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 28.595
Then I find very few patterns in the guest's memory 2.586 
Pattern coverage: 0.000% (0 MiB out of 1408 MiB reference memory)
# write cache
When I fill the USB drive with a known pattern 1.234
Then patterns cover at least 99% of the test FS size in the guest's memory 2.892 
Pattern coverage: 106.115% (97 MiB out of 91 MiB reference memory)
When I umount the USB drive 0.491
Then I find very few patterns in the guest's memory after 3 seconds 5.512 
Pattern coverage: 0.000% (0 MiB out of 1408 MiB reference memory)
# read cache
When I mount the USB drive again 3.851
And I read the content of the test FS 0.318
Then patterns cover at least 99% of the test FS size in the guest's memory 2.615 
Pattern coverage: 106.115% (97 MiB out of 91 MiB reference memory)
When I umount the USB drive 0.407
Then I find very few patterns in the guest's memory after 3 seconds 5.493 
Pattern coverage: 0.000% (0 MiB out of 1408 MiB reference memory)
After features/support/hooks.rb:339 0.961
After features/support/hooks.rb:108 0.000
Tags: @product @slow @not_release_blocker
43.867
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 6.370
And I prepare Tails for memory erasure tests 0.319
When I fill a 128 MiB file with a known pattern on the root filesystem 12.933
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.343
Then patterns cover at least 128 MiB in the guest's memory 2.182 
Pattern coverage: 100.000% (128 MiB out of 128 MiB reference memory)
When I trigger shutdown 0.004
Then I find very few patterns in the guest's memory after 20 seconds 20.712 
Pattern coverage: 0.000% (0 MiB out of 1408 MiB reference memory)
After features/support/hooks.rb:339 3.656
After features/support/hooks.rb:108 0.000
Tags: @product @slow @not_release_blocker
4:15.487
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 3:43.268
And I prepare Tails for memory erasure tests 0.271
When I fill a 128 MiB file with a known pattern on the persistent filesystem 10.818
When I trigger shutdown 0.005
Then I find very few patterns in the guest's memory after 20 seconds 21.122 
Pattern coverage: 0.000% (0 MiB out of 1393 MiB reference memory)
After features/support/hooks.rb:339 3.654
After features/support/hooks.rb:108 0.009