Project Number Date
test_Tails_ISO_21771-test-reliable-celluloid-open 3 07 Sep 2026, 20:10

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 7:29.471 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.
19.537
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 6.152
And I prepare Tails for memory erasure tests 0.291
When I start a process allocating 128 MiB of memory with a known pattern 2.226
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 3.032

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

When I kill the allocating process 0.217
Then I find very few patterns in the guest's memory after 5 seconds 7.617

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

After features/support/hooks.rb:339 0.672
After features/support/hooks.rb:108 0.000
20.065
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 6.227
And I prepare Tails for memory erasure tests 0.324
And I find very few patterns in the guest's memory 2.949

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 1.629
Then patterns cover at least 99% of the test FS size in the guest's memory 2.860

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

When I umount "/mnt" 0.399
Then I find very few patterns in the guest's memory after 3 seconds 5.674

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

After features/support/hooks.rb:339 0.671
After features/support/hooks.rb:108 0.000
37.001
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 6.222
And I prepare Tails for memory erasure tests 0.292
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.463
Then I find very few patterns in the guest's memory 2.723

Pattern coverage: 0.000% (0 MiB out of 1401 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.786
Then patterns cover at least 75% of the test FS size in the guest's memory 3.152

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

When I umount the USB drive 0.691
Then I find very few patterns in the guest's memory after 3 seconds 5.686

Pattern coverage: 0.000% (0 MiB out of 1401 MiB reference memory)

# read cache
When I mount the USB drive again 0.152
And I read the content of the test FS 0.678
Then patterns cover at least 99% of the test FS size in the guest's memory 3.037

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

When I umount the USB drive 0.447
Then I find very few patterns in the guest's memory after 3 seconds 5.666

Pattern coverage: 0.000% (0 MiB out of 1401 MiB reference memory)

After features/support/hooks.rb:339 0.725
After features/support/hooks.rb:108 0.000
59.400
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 6.193
And I prepare Tails for memory erasure tests 0.301
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 27.582
Then I find very few patterns in the guest's memory 2.638

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

# write cache
When I fill the USB drive with a known pattern 1.118
Then patterns cover at least 99% of the test FS size in the guest's memory 2.754

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

When I umount the USB drive 0.461
Then I find very few patterns in the guest's memory after 3 seconds 5.562

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

# read cache
When I mount the USB drive again 3.603
And I read the content of the test FS 0.499
Then patterns cover at least 99% of the test FS size in the guest's memory 2.699

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

When I umount the USB drive 0.439
Then I find very few patterns in the guest's memory after 3 seconds 5.544

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

After features/support/hooks.rb:339 0.889
After features/support/hooks.rb:108 0.000
44.659
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 6.225
And I prepare Tails for memory erasure tests 0.308
When I fill a 128 MiB file with a known pattern on the root filesystem 13.715
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.527
Then patterns cover at least 128 MiB in the guest's memory 2.109

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

When I trigger shutdown 0.013
Then I find very few patterns in the guest's memory after 20 seconds 20.759

Pattern coverage: 0.000% (0 MiB out of 1407 MiB reference memory)

After features/support/hooks.rb:339 3.346
After features/support/hooks.rb:108 0.000
4:28.806
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 3:56.470
And I prepare Tails for memory erasure tests 0.276
When I fill a 128 MiB file with a known pattern on the persistent filesystem 10.951
When I trigger shutdown 0.005
Then I find very few patterns in the guest's memory after 20 seconds 21.104

Pattern coverage: 0.000% (0 MiB out of 1417 MiB reference memory)

After features/support/hooks.rb:339 3.341
After features/support/hooks.rb:108 0.008