Project Number Date
test_Tails_ISO_stable-flatpak 2 08 Sep 2026, 13:22

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 7:59.809 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.
33.092
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.004
Given I have started Tails from DVD without network and logged in 18.953
And I prepare Tails for memory erasure tests 0.345
When I start a process allocating 128 MiB of memory with a known pattern 2.186
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 2.995

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

When I kill the allocating process 0.778
Then I find very few patterns in the guest's memory after 5 seconds 7.833

Pattern coverage: 0.000% (0 MiB out of 1403 MiB reference memory)

After features/support/hooks.rb:339 0.740
After features/support/hooks.rb:108 0.000
21.153
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 6.590
And I prepare Tails for memory erasure tests 0.417
And I find very few patterns in the guest's memory 2.667

Pattern coverage: 0.000% (0 MiB out of 1404 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.622
Then patterns cover at least 99% of the test FS size in the guest's memory 3.479

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

When I umount "/mnt" 0.491
Then I find very few patterns in the guest's memory after 3 seconds 5.884

Pattern coverage: 0.000% (0 MiB out of 1404 MiB reference memory)

After features/support/hooks.rb:339 0.620
After features/support/hooks.rb:108 0.000
39.220
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 6.282
And I prepare Tails for memory erasure tests 0.396
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.486
Then I find very few patterns in the guest's memory 3.819

Pattern coverage: 0.000% (0 MiB out of 1400 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.886
Then patterns cover at least 75% of the test FS size in the guest's memory 3.187

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 5.801

Pattern coverage: 0.000% (0 MiB out of 1400 MiB reference memory)

# read cache
When I mount the USB drive again 0.173
And I read the content of the test FS 0.667
Then patterns cover at least 99% of the test FS size in the guest's memory 3.405

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

When I umount the USB drive 0.516
Then I find very few patterns in the guest's memory after 3 seconds 5.906

Pattern coverage: 0.000% (0 MiB out of 1400 MiB reference memory)

After features/support/hooks.rb:339 1.135
After features/support/hooks.rb:108 0.000
1:7.928
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 6.400
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" 33.837
Then I find very few patterns in the guest's memory 2.840

Pattern coverage: 0.000% (0 MiB out of 1404 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.097
Then patterns cover at least 99% of the test FS size in the guest's memory 2.800

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

When I umount the USB drive 0.573
Then I find very few patterns in the guest's memory after 3 seconds 5.868

Pattern coverage: 0.000% (0 MiB out of 1404 MiB reference memory)

# read cache
When I mount the USB drive again 4.613
And I read the content of the test FS 0.379
Then patterns cover at least 99% of the test FS size in the guest's memory 2.832

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

When I umount the USB drive 0.448
Then I find very few patterns in the guest's memory after 3 seconds 5.871

Pattern coverage: 0.000% (0 MiB out of 1404 MiB reference memory)

After features/support/hooks.rb:339 1.318
After features/support/hooks.rb:108 0.009
46.128
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.005
Given I have started Tails from DVD without network and logged in 7.336
And I prepare Tails for memory erasure tests 0.369
When I fill a 128 MiB file with a known pattern on the root filesystem 12.863
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.958
Then patterns cover at least 128 MiB in the guest's memory 2.817

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 20.776

Pattern coverage: 0.000% (0 MiB out of 1414 MiB reference memory)

After features/support/hooks.rb:339 3.567
After features/support/hooks.rb:108 0.000
4:32.285
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.002
Given I have started Tails without network from a USB drive with a persistent partition enabled and logged in 4:0.456
And I prepare Tails for memory erasure tests 0.306
When I fill a 128 MiB file with a known pattern on the persistent filesystem 10.098
When I trigger shutdown 0.014
Then I find very few patterns in the guest's memory after 20 seconds 21.410

Pattern coverage: 0.000% (0 MiB out of 1423 MiB reference memory)

After features/support/hooks.rb:339 3.439
After features/support/hooks.rb:108 0.012