Project Number Date
test_Tails_ISO_flatpak-whisperback 4 13 May 2026, 20:54

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 7:20.069 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.
18.355
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 6.395
And I prepare Tails for memory erasure tests 0.343
When I start a process allocating 128 MiB of memory with a known pattern 2.230
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 1.945

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

When I kill the allocating process 0.701
Then I find very few patterns in the guest's memory after 5 seconds 6.739

Pattern coverage: 0.000% (0 MiB out of 1496 MiB reference memory)

After features/support/hooks.rb:335 0.841
After features/support/hooks.rb:104 0.000
16.882
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 6.438
And I prepare Tails for memory erasure tests 0.353
And I find very few patterns in the guest's memory 1.606

Pattern coverage: 0.000% (0 MiB out of 1494 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.637
Then patterns cover at least 99% of the test FS size in the guest's memory 1.926

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

When I umount "/mnt" 0.257
Then I find very few patterns in the guest's memory after 3 seconds 4.662

Pattern coverage: 0.000% (0 MiB out of 1494 MiB reference memory)

After features/support/hooks.rb:335 0.828
After features/support/hooks.rb:104 0.000
31.239
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 6.408
And I prepare Tails for memory erasure tests 0.326
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.123
Then I find very few patterns in the guest's memory 1.771

Pattern coverage: 0.000% (0 MiB out of 1493 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.534
Then patterns cover at least 75% of the test FS size in the guest's memory 1.924

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

When I umount the USB drive 0.628
Then I find very few patterns in the guest's memory after 3 seconds 4.708

Pattern coverage: 0.000% (0 MiB out of 1493 MiB reference memory)

# read cache
When I mount the USB drive again 0.182
And I read the content of the test FS 0.408
Then patterns cover at least 99% of the test FS size in the guest's memory 2.147

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

When I umount the USB drive 0.342
Then I find very few patterns in the guest's memory after 3 seconds 4.732

Pattern coverage: 0.000% (0 MiB out of 1493 MiB reference memory)

After features/support/hooks.rb:335 0.984
After features/support/hooks.rb:104 0.000
57.504
Before features/support/hooks.rb:270 0.000
Before features/support/hooks.rb:277 0.002
Given I have started Tails from DVD without network and logged in 6.364
And I prepare Tails for memory erasure tests 0.364
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 29.707
Then I find very few patterns in the guest's memory 1.731

Pattern coverage: 0.000% (0 MiB out of 1484 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.406
Then patterns cover at least 99% of the test FS size in the guest's memory 1.771

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

When I umount the USB drive 0.497
Then I find very few patterns in the guest's memory after 3 seconds 4.533

Pattern coverage: 0.000% (0 MiB out of 1484 MiB reference memory)

# read cache
When I mount the USB drive again 3.955
And I read the content of the test FS 0.268
Then patterns cover at least 99% of the test FS size in the guest's memory 1.768

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

When I umount the USB drive 0.423
Then I find very few patterns in the guest's memory after 3 seconds 4.710

Pattern coverage: 0.000% (0 MiB out of 1484 MiB reference memory)

After features/support/hooks.rb:335 0.768
After features/support/hooks.rb:104 0.000
54.500
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 6.520
And I prepare Tails for memory erasure tests 0.359
When I fill a 128 MiB file with a known pattern on the root filesystem 23.956
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.670
Then patterns cover at least 128 MiB in the guest's memory 1.472

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 20.515

Pattern coverage: 0.000% (0 MiB out of 1506 MiB reference memory)

After features/support/hooks.rb:335 3.525
After features/support/hooks.rb:104 0.000
4:21.588
Before features/support/hooks.rb:270 0.000
Before features/support/hooks.rb:277 0.002
Given I have started Tails without network from a USB drive with a persistent partition enabled and logged in 3:45.762
And I prepare Tails for memory erasure tests 0.284
When I fill a 128 MiB file with a known pattern on the persistent filesystem 14.594
When I trigger shutdown 0.005
Then I find very few patterns in the guest's memory after 20 seconds 20.940

Pattern coverage: 0.000% (0 MiB out of 1516 MiB reference memory)

After features/support/hooks.rb:335 3.582
After features/support/hooks.rb:104 0.008