Project Number Date
test_Tails_ISO_21472-circumvention-settings-2 1 27 Mar 2026, 18:13

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 7:39.538 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
21.390
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 6.911
And I prepare Tails for memory erasure tests 0.396
When I start a process allocating 128 MiB of memory with a known pattern 3.848
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 2.225 
Pattern coverage: 100.395% (127 MiB out of 127 MiB reference memory)
When I kill the allocating process 1.139
Then I find very few patterns in the guest's memory after 5 seconds 6.869 
Pattern coverage: 0.000% (0 MiB out of 1478 MiB reference memory)
After features/support/hooks.rb:331 1.006
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
18.101
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 6.735
And I prepare Tails for memory erasure tests 0.361
And I find very few patterns in the guest's memory 1.879 
Pattern coverage: 0.000% (0 MiB out of 1482 MiB reference memory)
When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.553
Then patterns cover at least 99% of the test FS size in the guest's memory 2.130 
Pattern coverage: 100.000% (128 MiB out of 128 MiB reference memory)
When I umount "/mnt" 0.426
Then I find very few patterns in the guest's memory after 3 seconds 5.014 
Pattern coverage: 0.000% (0 MiB out of 1482 MiB reference memory)
After features/support/hooks.rb:331 0.851
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
32.991
Before features/support/hooks.rb:266 0.000
Before features/support/hooks.rb:273 0.001
Given I have started Tails from DVD without network and logged in 6.571
And I prepare Tails for memory erasure tests 0.324
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.787
Then I find very few patterns in the guest's memory 1.912 
Pattern coverage: 0.000% (0 MiB out of 1482 MiB reference memory)
# write cache
When I fill the USB drive with a known pattern 2.337
Then patterns cover at least 75% of the test FS size in the guest's memory 2.225 
Pattern coverage: 100.000% (127 MiB out of 127 MiB reference memory)
When I umount the USB drive 0.826
Then I find very few patterns in the guest's memory after 3 seconds 4.860 
Pattern coverage: 0.000% (0 MiB out of 1482 MiB reference memory)
# read cache
When I mount the USB drive again 0.221
And I read the content of the test FS 0.472
Then patterns cover at least 99% of the test FS size in the guest's memory 2.049 
Pattern coverage: 100.000% (127 MiB out of 127 MiB reference memory)
When I umount the USB drive 0.530
Then I find very few patterns in the guest's memory after 3 seconds 4.873 
Pattern coverage: 0.000% (0 MiB out of 1482 MiB reference memory)
After features/support/hooks.rb:331 0.965
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
1:6.806
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 6.975
And I prepare Tails for memory erasure tests 0.356
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 36.682
Then I find very few patterns in the guest's memory 1.844 
Pattern coverage: 0.000% (0 MiB out of 1477 MiB reference memory)
# write cache
When I fill the USB drive with a known pattern 1.696
Then patterns cover at least 99% of the test FS size in the guest's memory 1.844 
Pattern coverage: 106.115% (97 MiB out of 91 MiB reference memory)
When I umount the USB drive 0.675
Then I find very few patterns in the guest's memory after 3 seconds 4.666 
Pattern coverage: 0.000% (0 MiB out of 1477 MiB reference memory)
# read cache
When I mount the USB drive again 4.686
And I read the content of the test FS 0.291
Then patterns cover at least 99% of the test FS size in the guest's memory 1.806 
Pattern coverage: 106.115% (97 MiB out of 91 MiB reference memory)
When I umount the USB drive 0.471
Then I find very few patterns in the guest's memory after 3 seconds 4.809 
Pattern coverage: 0.000% (0 MiB out of 1477 MiB reference memory)
After features/support/hooks.rb:331 1.275
After features/support/hooks.rb:100 0.001
Tags: @product @slow @not_release_blocker
44.452
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 6.675
And I prepare Tails for memory erasure tests 0.406
When I fill a 128 MiB file with a known pattern on the root filesystem 13.290
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.991
Then patterns cover at least 128 MiB in the guest's memory 1.531 
Pattern coverage: 100.000% (128 MiB out of 128 MiB reference memory)
When I trigger shutdown 0.005
Then I find very few patterns in the guest's memory after 20 seconds 20.550 
Pattern coverage: 0.000% (0 MiB out of 1476 MiB reference memory)
After features/support/hooks.rb:331 3.690
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
4:35.795
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 4:2.921
And I prepare Tails for memory erasure tests 0.416
When I fill a 128 MiB file with a known pattern on the persistent filesystem 11.335
When I trigger shutdown 0.006
Then I find very few patterns in the guest's memory after 20 seconds 21.114 
Pattern coverage: 0.000% (0 MiB out of 1505 MiB reference memory)
After features/support/hooks.rb:331 3.531
After features/support/hooks.rb:100 0.026