Project Number Date
test_Tails_ISO_21548-flatpak-install 7 17 May 2026, 14:16

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 7:7.792 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.
16.627
Before features/support/hooks.rb:270 0.000
Before features/support/hooks.rb:277 0.001
Given I have started Tails from DVD without network and logged in 6.418
And I prepare Tails for memory erasure tests 0.330
When I start a process allocating 128 MiB of memory with a known pattern 1.127
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 1.915

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

When I kill the allocating process 0.158
Then I find very few patterns in the guest's memory after 5 seconds 6.677

Pattern coverage: 0.000% (0 MiB out of 1468 MiB reference memory)

After features/support/hooks.rb:335 0.602
After features/support/hooks.rb:104 0.000
17.200
Before features/support/hooks.rb:270 0.000
Before features/support/hooks.rb:277 0.001
Given I have started Tails from DVD without network and logged in 6.463
And I prepare Tails for memory erasure tests 0.357
And I find very few patterns in the guest's memory 1.709

Pattern coverage: 0.000% (0 MiB out of 1500 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.586
Then patterns cover at least 99% of the test FS size in the guest's memory 1.975

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

When I umount "/mnt" 0.302
Then I find very few patterns in the guest's memory after 3 seconds 4.804

Pattern coverage: 0.000% (0 MiB out of 1500 MiB reference memory)

After features/support/hooks.rb:335 1.013
After features/support/hooks.rb:104 0.000
31.369
Before features/support/hooks.rb:270 0.000
Before features/support/hooks.rb:277 0.001
Given I have started Tails from DVD without network and logged in 6.455
And I prepare Tails for memory erasure tests 0.331
When I plug and mount a 128 MiB USB drive with a vfat filesystem 4.995
Then I find very few patterns in the guest's memory 1.819

Pattern coverage: 0.000% (0 MiB out of 1470 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.515
Then patterns cover at least 75% of the test FS size in the guest's memory 2.059

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

When I umount the USB drive 0.671
Then I find very few patterns in the guest's memory after 3 seconds 4.724

Pattern coverage: 0.000% (0 MiB out of 1470 MiB reference memory)

# read cache
When I mount the USB drive again 0.156
And I read the content of the test FS 0.489
Then patterns cover at least 99% of the test FS size in the guest's memory 1.888

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

When I umount the USB drive 0.395
Then I find very few patterns in the guest's memory after 3 seconds 4.865

Pattern coverage: 0.000% (0 MiB out of 1470 MiB reference memory)

After features/support/hooks.rb:335 0.874
After features/support/hooks.rb:104 0.000
55.004
Before features/support/hooks.rb:270 0.000
Before features/support/hooks.rb:277 0.001
Given I have started Tails from DVD without network and logged in 6.621
And I prepare Tails for memory erasure tests 0.331
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 27.581
Then I find very few patterns in the guest's memory 1.561

Pattern coverage: 0.000% (0 MiB out of 1466 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.305
Then patterns cover at least 99% of the test FS size in the guest's memory 1.730

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

When I umount the USB drive 0.443
Then I find very few patterns in the guest's memory after 3 seconds 4.643

Pattern coverage: 0.000% (0 MiB out of 1466 MiB reference memory)

# read cache
When I mount the USB drive again 3.655
And I read the content of the test FS 0.269
Then patterns cover at least 99% of the test FS size in the guest's memory 1.858

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

When I umount the USB drive 0.405
Then I find very few patterns in the guest's memory after 3 seconds 4.595

Pattern coverage: 0.000% (0 MiB out of 1466 MiB reference memory)

After features/support/hooks.rb:335 0.730
After features/support/hooks.rb:104 0.000
51.380
Before features/support/hooks.rb:270 0.000
Before features/support/hooks.rb:277 0.001
Given I have started Tails from DVD without network and logged in 6.467
And I prepare Tails for memory erasure tests 0.430
When I fill a 128 MiB file with a known pattern on the root filesystem 20.905
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.561
Then patterns cover at least 128 MiB in the guest's memory 1.526

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 20.482

Pattern coverage: 0.000% (0 MiB out of 1467 MiB reference memory)

After features/support/hooks.rb:335 3.684
After features/support/hooks.rb:104 0.000
4:16.211
Before features/support/hooks.rb:270 0.000
Before features/support/hooks.rb:277 0.001
Given I have started Tails without network from a USB drive with a persistent partition enabled and logged in 3:39.794
And I prepare Tails for memory erasure tests 0.268
When I fill a 128 MiB file with a known pattern on the persistent filesystem 15.212
When I trigger shutdown 0.004
Then I find very few patterns in the guest's memory after 20 seconds 20.932

Pattern coverage: 0.000% (0 MiB out of 1481 MiB reference memory)

After features/support/hooks.rb:335 3.502
After features/support/hooks.rb:104 0.008