Project Number Date
test_Tails_ISO_7929-celluloid-flatpak 37 21 May 2026, 15:33

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 7:37.252 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.
19.517
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 6.729
And I prepare Tails for memory erasure tests 0.399
When I start a process allocating 128 MiB of memory with a known pattern 2.234
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 2.097

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

When I kill the allocating process 1.001
Then I find very few patterns in the guest's memory after 5 seconds 7.055

Pattern coverage: 0.000% (0 MiB out of 1485 MiB reference memory)

After features/support/hooks.rb:335 0.717
After features/support/hooks.rb:104 0.000
18.498
Before features/support/hooks.rb:270 0.000
Before features/support/hooks.rb:277 0.003
Given I have started Tails from DVD without network and logged in 6.859
And I prepare Tails for memory erasure tests 0.397
And I find very few patterns in the guest's memory 1.930

Pattern coverage: 0.000% (0 MiB out of 1471 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.652
Then patterns cover at least 99% of the test FS size in the guest's memory 2.331

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

When I umount "/mnt" 0.405
Then I find very few patterns in the guest's memory after 3 seconds 4.921

Pattern coverage: 0.000% (0 MiB out of 1471 MiB reference memory)

After features/support/hooks.rb:335 0.965
After features/support/hooks.rb:104 0.000
33.621
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 6.774
And I prepare Tails for memory erasure tests 0.388
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.350
Then I find very few patterns in the guest's memory 2.031

Pattern coverage: 0.000% (0 MiB out of 1479 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.805
Then patterns cover at least 75% of the test FS size in the guest's memory 2.297

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

When I umount the USB drive 0.757
Then I find very few patterns in the guest's memory after 3 seconds 4.752

Pattern coverage: 0.000% (0 MiB out of 1479 MiB reference memory)

# read cache
When I mount the USB drive again 0.180
And I read the content of the test FS 0.406
Then patterns cover at least 99% of the test FS size in the guest's memory 2.100

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

When I umount the USB drive 0.426
Then I find very few patterns in the guest's memory after 3 seconds 5.347

Pattern coverage: 0.000% (0 MiB out of 1479 MiB reference memory)

After features/support/hooks.rb:335 0.731
After features/support/hooks.rb:104 0.000
55.814
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 6.937
And I prepare Tails for memory erasure tests 0.481
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 27.090
Then I find very few patterns in the guest's memory 1.804

Pattern coverage: 0.000% (0 MiB out of 1473 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.550
Then patterns cover at least 99% of the test FS size in the guest's memory 1.961

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

When I umount the USB drive 0.523
Then I find very few patterns in the guest's memory after 3 seconds 4.795

Pattern coverage: 0.000% (0 MiB out of 1473 MiB reference memory)

# read cache
When I mount the USB drive again 3.635
And I read the content of the test FS 0.293
Then patterns cover at least 99% of the test FS size in the guest's memory 1.737

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

When I umount the USB drive 0.409
Then I find very few patterns in the guest's memory after 3 seconds 4.594

Pattern coverage: 0.000% (0 MiB out of 1473 MiB reference memory)

After features/support/hooks.rb:335 0.928
After features/support/hooks.rb:104 0.000
56.799
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 7.093
And I prepare Tails for memory erasure tests 0.352
When I fill a 128 MiB file with a known pattern on the root filesystem 25.080
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.939
Then patterns cover at least 128 MiB in the guest's memory 1.691

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 20.633

Pattern coverage: 0.000% (0 MiB out of 1485 MiB reference memory)

After features/support/hooks.rb:335 3.991
After features/support/hooks.rb:104 0.000
4:33.001
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 3:53.553
And I prepare Tails for memory erasure tests 0.347
When I fill a 128 MiB file with a known pattern on the persistent filesystem 18.175
When I trigger shutdown 0.007
Then I find very few patterns in the guest's memory after 20 seconds 20.917

Pattern coverage: 0.000% (0 MiB out of 1510 MiB reference memory)

After features/support/hooks.rb:335 3.843
After features/support/hooks.rb:104 0.026