Project Number Date
test_Tails_ISO_stable-flatpak 54 23 Oct 2026, 19:50

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 7:25.350 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.
20.284
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 6.247
And I prepare Tails for memory erasure tests 0.311
When I start a process allocating 128 MiB of memory with a known pattern 2.232
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 3.104

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

When I kill the allocating process 0.805
Then I find very few patterns in the guest's memory after 5 seconds 7.582

Pattern coverage: 0.000% (0 MiB out of 1416 MiB reference memory)

After features/support/hooks.rb:339 0.870
After features/support/hooks.rb:108 0.000
21.172
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 6.254
And I prepare Tails for memory erasure tests 0.291
And I find very few patterns in the guest's memory 3.941

Pattern coverage: 0.000% (0 MiB out of 1424 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.349
Then patterns cover at least 99% of the test FS size in the guest's memory 3.079

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

When I umount "/mnt" 0.422
Then I find very few patterns in the guest's memory after 3 seconds 5.833

Pattern coverage: 0.000% (0 MiB out of 1424 MiB reference memory)

After features/support/hooks.rb:339 0.517
After features/support/hooks.rb:108 0.000
37.126
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.003
Given I have started Tails from DVD without network and logged in 6.572
And I prepare Tails for memory erasure tests 0.302
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.493
Then I find very few patterns in the guest's memory 2.715

Pattern coverage: 0.000% (0 MiB out of 1402 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.424
Then patterns cover at least 75% of the test FS size in the guest's memory 3.038

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

When I umount the USB drive 0.667
Then I find very few patterns in the guest's memory after 3 seconds 6.022

Pattern coverage: 0.000% (0 MiB out of 1402 MiB reference memory)

# read cache
When I mount the USB drive again 0.174
And I read the content of the test FS 0.567
Then patterns cover at least 99% of the test FS size in the guest's memory 2.939

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

When I umount the USB drive 0.401
Then I find very few patterns in the guest's memory after 3 seconds 5.808

Pattern coverage: 0.000% (0 MiB out of 1402 MiB reference memory)

After features/support/hooks.rb:339 0.654
After features/support/hooks.rb:108 0.000
1:2.333
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.003
Given I have started Tails from DVD without network and logged in 6.286
And I prepare Tails for memory erasure tests 0.276
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 30.414
Then I find very few patterns in the guest's memory 2.621

Pattern coverage: 0.000% (0 MiB out of 1419 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 0.917
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 0.421
Then I find very few patterns in the guest's memory after 3 seconds 5.861

Pattern coverage: 0.000% (0 MiB out of 1419 MiB reference memory)

# read cache
When I mount the USB drive again 3.807
And I read the content of the test FS 0.366
Then patterns cover at least 99% of the test FS size in the guest's memory 2.770

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

When I umount the USB drive 0.417
Then I find very few patterns in the guest's memory after 3 seconds 5.551

Pattern coverage: 0.000% (0 MiB out of 1419 MiB reference memory)

After features/support/hooks.rb:339 0.882
After features/support/hooks.rb:108 0.000
44.876
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.003
Given I have started Tails from DVD without network and logged in 6.404
And I prepare Tails for memory erasure tests 0.346
When I fill a 128 MiB file with a known pattern on the root filesystem 13.295
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.500
Then patterns cover at least 128 MiB in the guest's memory 2.226

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 21.097

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

After features/support/hooks.rb:339 3.704
After features/support/hooks.rb:108 0.000
4:19.556
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 3:47.687
And I prepare Tails for memory erasure tests 0.241
When I fill a 128 MiB file with a known pattern on the persistent filesystem 10.316
When I trigger shutdown 0.006
Then I find very few patterns in the guest's memory after 20 seconds 21.304

Pattern coverage: 0.000% (0 MiB out of 1425 MiB reference memory)

After features/support/hooks.rb:339 3.650
After features/support/hooks.rb:108 0.010