Project Number Date
test_Tails_ISO_stable-flatpak 5 08 Sep 2026, 18:11

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 7:52.718 Passed
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.
19.772
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 6.238
And I prepare Tails for memory erasure tests 0.379
When I start a process allocating 128 MiB of memory with a known pattern 2.216
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 2.987

Pattern coverage: 100.395% (127 MiB out of 127 MiB reference memory)

When I kill the allocating process 0.330
Then I find very few patterns in the guest's memory after 5 seconds 7.619

Pattern coverage: 0.000% (0 MiB out of 1425 MiB reference memory)

After features/support/hooks.rb:339 0.950
After features/support/hooks.rb:108 0.000
20.055
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 6.296
And I prepare Tails for memory erasure tests 0.452
And I find very few patterns in the guest's memory 2.656

Pattern coverage: 0.000% (0 MiB out of 1418 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.583
Then patterns cover at least 99% of the test FS size in the guest's memory 3.011

Pattern coverage: 100.000% (128 MiB out of 128 MiB reference memory)

When I umount "/mnt" 0.411
Then I find very few patterns in the guest's memory after 3 seconds 5.643

Pattern coverage: 0.000% (0 MiB out of 1418 MiB reference memory)

After features/support/hooks.rb:339 0.673
After features/support/hooks.rb:108 0.000
37.599
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 6.553
And I prepare Tails for memory erasure tests 0.498
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.683
Then I find very few patterns in the guest's memory 2.739

Pattern coverage: 0.000% (0 MiB out of 1415 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.552
Then patterns cover at least 75% of the test FS size in the guest's memory 3.072

Pattern coverage: 100.000% (127 MiB out of 127 MiB reference memory)

When I umount the USB drive 0.690
Then I find very few patterns in the guest's memory after 3 seconds 5.974

Pattern coverage: 0.000% (0 MiB out of 1415 MiB reference memory)

# read cache
When I mount the USB drive again 0.237
And I read the content of the test FS 0.529
Then patterns cover at least 99% of the test FS size in the guest's memory 3.059

Pattern coverage: 100.000% (127 MiB out of 127 MiB reference memory)

When I umount the USB drive 0.464
Then I find very few patterns in the guest's memory after 3 seconds 5.542

Pattern coverage: 0.000% (0 MiB out of 1415 MiB reference memory)

After features/support/hooks.rb:339 0.722
After features/support/hooks.rb:108 0.000
1:15.416
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 18.269
And I prepare Tails for memory erasure tests 0.374
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 29.865
Then I find very few patterns in the guest's memory 2.810

Pattern coverage: 0.000% (0 MiB out of 1416 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.170
Then patterns cover at least 99% of the test FS size in the guest's memory 2.952

Pattern coverage: 106.115% (97 MiB out of 91 MiB reference memory)

When I umount the USB drive 0.514
Then I find very few patterns in the guest's memory after 3 seconds 5.539

Pattern coverage: 0.000% (0 MiB out of 1416 MiB reference memory)

# read cache
When I mount the USB drive again 3.827
And I read the content of the test FS 0.372
Then patterns cover at least 99% of the test FS size in the guest's memory 3.288

Pattern coverage: 106.115% (97 MiB out of 91 MiB reference memory)

When I umount the USB drive 0.745
Then I find very few patterns in the guest's memory after 3 seconds 5.686

Pattern coverage: 0.000% (0 MiB out of 1416 MiB reference memory)

After features/support/hooks.rb:339 1.376
After features/support/hooks.rb:108 0.000
47.440
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 7.808
And I prepare Tails for memory erasure tests 0.356
When I fill a 128 MiB file with a known pattern on the root filesystem 14.604
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.614
Then patterns cover at least 128 MiB in the guest's memory 2.222

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 20.828

Pattern coverage: 0.000% (0 MiB out of 1419 MiB reference memory)

After features/support/hooks.rb:339 3.650
After features/support/hooks.rb:108 0.000
4:32.433
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.005
Given I have started Tails without network from a USB drive with a persistent partition enabled and logged in 4:0.478
And I prepare Tails for memory erasure tests 0.374
When I fill a 128 MiB file with a known pattern on the persistent filesystem 10.438
When I trigger shutdown 0.006
Then I find very few patterns in the guest's memory after 20 seconds 21.136

Pattern coverage: 0.000% (0 MiB out of 1410 MiB reference memory)

After features/support/hooks.rb:339 3.810
After features/support/hooks.rb:108 0.011