Project Number Date
test_Tails_ISO_stable-flatpak 50 18 Oct 2026, 19:56

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 7:34.846 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.
30.987
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 17.852
And I prepare Tails for memory erasure tests 0.281
When I start a process allocating 128 MiB of memory with a known pattern 2.215
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 2.861

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

When I kill the allocating process 0.183
Then I find very few patterns in the guest's memory after 5 seconds 7.593

Pattern coverage: 0.000% (0 MiB out of 1406 MiB reference memory)

After features/support/hooks.rb:339 0.719
After features/support/hooks.rb:108 0.000
22.129
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.001
Given I have started Tails from DVD without network and logged in 6.160
And I prepare Tails for memory erasure tests 0.297
And I find very few patterns in the guest's memory 2.627

Pattern coverage: 0.000% (0 MiB out of 1407 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.408
Then patterns cover at least 99% of the test FS size in the guest's memory 3.560

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

When I umount "/mnt" 0.354
Then I find very few patterns in the guest's memory after 3 seconds 7.721

Pattern coverage: 0.000% (0 MiB out of 1407 MiB reference memory)

After features/support/hooks.rb:339 0.610
After features/support/hooks.rb:108 0.000
38.282
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.001
Given I have started Tails from DVD without network and logged in 6.182
And I prepare Tails for memory erasure tests 0.330
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.195
Then I find very few patterns in the guest's memory 3.621

Pattern coverage: 0.000% (0 MiB out of 1412 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.605
Then patterns cover at least 75% of the test FS size in the guest's memory 3.773

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

When I umount the USB drive 0.643
Then I find very few patterns in the guest's memory after 3 seconds 6.134

Pattern coverage: 0.000% (0 MiB out of 1412 MiB reference memory)

# read cache
When I mount the USB drive again 0.165
And I read the content of the test FS 0.555
Then patterns cover at least 99% of the test FS size in the guest's memory 3.057

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

When I umount the USB drive 0.400
Then I find very few patterns in the guest's memory after 3 seconds 5.617

Pattern coverage: 0.000% (0 MiB out of 1412 MiB reference memory)

After features/support/hooks.rb:339 1.043
After features/support/hooks.rb:108 0.000
59.342
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.001
Given I have started Tails from DVD without network and logged in 6.200
And I prepare Tails for memory erasure tests 0.288
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 28.034
Then I find very few patterns in the guest's memory 2.491

Pattern coverage: 0.000% (0 MiB out of 1417 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.074
Then patterns cover at least 99% of the test FS size in the guest's memory 2.621

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

When I umount the USB drive 0.438
Then I find very few patterns in the guest's memory after 3 seconds 5.595

Pattern coverage: 0.000% (0 MiB out of 1417 MiB reference memory)

# read cache
When I mount the USB drive again 3.775
And I read the content of the test FS 0.346
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 0.363
Then I find very few patterns in the guest's memory after 3 seconds 5.497

Pattern coverage: 0.000% (0 MiB out of 1417 MiB reference memory)

After features/support/hooks.rb:339 0.912
After features/support/hooks.rb:108 0.000
44.667
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.001
Given I have started Tails from DVD without network and logged in 6.245
And I prepare Tails for memory erasure tests 0.303
When I fill a 128 MiB file with a known pattern on the root filesystem 13.476
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.514
Then patterns cover at least 128 MiB in the guest's memory 2.199

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 20.921

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

After features/support/hooks.rb:339 3.352
After features/support/hooks.rb:108 0.000
4:19.437
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.001
Given I have started Tails without network from a USB drive with a persistent partition enabled and logged in 3:47.102
And I prepare Tails for memory erasure tests 0.254
When I fill a 128 MiB file with a known pattern on the persistent filesystem 10.996
When I trigger shutdown 0.008
Then I find very few patterns in the guest's memory after 20 seconds 21.075

Pattern coverage: 0.000% (0 MiB out of 1442 MiB reference memory)

After features/support/hooks.rb:339 3.696
After features/support/hooks.rb:108 0.017