Project Number Date
test_Tails_ISO_stable-flatpak 37 05 Oct 2026, 19:53

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 7:29.571 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.
22.037
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 6.308
And I prepare Tails for memory erasure tests 0.383
When I start a process allocating 128 MiB of memory with a known pattern 2.194
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 3.502

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

When I kill the allocating process 0.221
Then I find very few patterns in the guest's memory after 5 seconds 9.426

Pattern coverage: 0.000% (0 MiB out of 1396 MiB reference memory)

After features/support/hooks.rb:339 0.735
After features/support/hooks.rb:108 0.000
24.306
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.010
Given I have started Tails from DVD without network and logged in 6.314
And I prepare Tails for memory erasure tests 0.332
And I find very few patterns in the guest's memory 4.053

Pattern coverage: 0.000% (0 MiB out of 1396 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.375
Then patterns cover at least 99% of the test FS size in the guest's memory 5.052

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

When I umount "/mnt" 0.353
Then I find very few patterns in the guest's memory after 3 seconds 6.823

Pattern coverage: 0.000% (0 MiB out of 1396 MiB reference memory)

After features/support/hooks.rb:339 0.930
After features/support/hooks.rb:108 0.000
39.826
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 6.219
And I prepare Tails for memory erasure tests 0.277
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.723
Then I find very few patterns in the guest's memory 3.519

Pattern coverage: 0.000% (0 MiB out of 1389 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.521
Then patterns cover at least 75% of the test FS size in the guest's memory 3.111

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

When I umount the USB drive 0.616
Then I find very few patterns in the guest's memory after 3 seconds 6.923

Pattern coverage: 0.000% (0 MiB out of 1389 MiB reference memory)

# read cache
When I mount the USB drive again 0.150
And I read the content of the test FS 0.560
Then patterns cover at least 99% of the test FS size in the guest's memory 3.859

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

When I umount the USB drive 0.376
Then I find very few patterns in the guest's memory after 3 seconds 5.967

Pattern coverage: 0.000% (0 MiB out of 1389 MiB reference memory)

After features/support/hooks.rb:339 0.904
After features/support/hooks.rb:108 0.000
1:1.587
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 6.142
And I prepare Tails for memory erasure tests 0.359
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 29.033
Then I find very few patterns in the guest's memory 2.436

Pattern coverage: 0.000% (0 MiB out of 1393 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.100
Then patterns cover at least 99% of the test FS size in the guest's memory 2.648

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

When I umount the USB drive 0.549
Then I find very few patterns in the guest's memory after 3 seconds 6.174

Pattern coverage: 0.000% (0 MiB out of 1393 MiB reference memory)

# read cache
When I mount the USB drive again 4.135
And I read the content of the test FS 0.358
Then patterns cover at least 99% of the test FS size in the guest's memory 2.644

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

When I umount the USB drive 0.491
Then I find very few patterns in the guest's memory after 3 seconds 5.512

Pattern coverage: 0.000% (0 MiB out of 1393 MiB reference memory)

After features/support/hooks.rb:339 0.689
After features/support/hooks.rb:108 0.000
45.413
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 6.586
And I prepare Tails for memory erasure tests 0.516
When I fill a 128 MiB file with a known pattern on the root filesystem 13.656
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.373
Then patterns cover at least 128 MiB in the guest's memory 2.271

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

When I trigger shutdown 0.007
Then I find very few patterns in the guest's memory after 20 seconds 21.002

Pattern coverage: 0.000% (0 MiB out of 1386 MiB reference memory)

After features/support/hooks.rb:339 3.680
After features/support/hooks.rb:108 0.000
4:16.399
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.003
Given I have started Tails without network from a USB drive with a persistent partition enabled and logged in 3:44.113
And I prepare Tails for memory erasure tests 0.317
When I fill a 128 MiB file with a known pattern on the persistent filesystem 10.818
When I trigger shutdown 0.004
Then I find very few patterns in the guest's memory after 20 seconds 21.145

Pattern coverage: 0.000% (0 MiB out of 1445 MiB reference memory)

After features/support/hooks.rb:339 3.792
After features/support/hooks.rb:108 0.011