Project Number Date
test_Tails_ISO_post-7.14-release-process 2 29 Sep 2026, 21:54

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 7:57.303 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.
19.986
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 6.293
And I prepare Tails for memory erasure tests 0.370
When I start a process allocating 128 MiB of memory with a known pattern 2.271
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 3.246

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

When I kill the allocating process 0.197
Then I find very few patterns in the guest's memory after 5 seconds 7.605

Pattern coverage: 0.000% (0 MiB out of 1412 MiB reference memory)

After features/support/hooks.rb:339 0.787
After features/support/hooks.rb:108 0.000
33.891
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 6.382
And I prepare Tails for memory erasure tests 0.348
And I find very few patterns in the guest's memory 5.594

Pattern coverage: 0.000% (0 MiB out of 1408 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.821
Then patterns cover at least 99% of the test FS size in the guest's memory 6.293

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

When I umount "/mnt" 0.420
Then I find very few patterns in the guest's memory after 3 seconds 13.030

Pattern coverage: 0.000% (0 MiB out of 1408 MiB reference memory)

After features/support/hooks.rb:339 0.924
After features/support/hooks.rb:108 0.000
46.932
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 6.588
And I prepare Tails for memory erasure tests 0.319
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.593
Then I find very few patterns in the guest's memory 5.421

Pattern coverage: 0.000% (0 MiB out of 1410 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 3.051
Then patterns cover at least 75% of the test FS size in the guest's memory 4.305

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

When I umount the USB drive 0.696
Then I find very few patterns in the guest's memory after 3 seconds 7.373

Pattern coverage: 0.000% (0 MiB out of 1410 MiB reference memory)

# read cache
When I mount the USB drive again 0.216
And I read the content of the test FS 0.680
Then patterns cover at least 99% of the test FS size in the guest's memory 5.099

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

When I umount the USB drive 0.474
Then I find very few patterns in the guest's memory after 3 seconds 7.111

Pattern coverage: 0.000% (0 MiB out of 1410 MiB reference memory)

After features/support/hooks.rb:339 0.887
After features/support/hooks.rb:108 0.000
1:4.327
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 6.605
And I prepare Tails for memory erasure tests 0.475
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 30.682
Then I find very few patterns in the guest's memory 2.750

Pattern coverage: 0.000% (0 MiB out of 1411 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.139
Then patterns cover at least 99% of the test FS size in the guest's memory 3.633

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

When I umount the USB drive 0.499
Then I find very few patterns in the guest's memory after 3 seconds 5.757

Pattern coverage: 0.000% (0 MiB out of 1411 MiB reference memory)

# read cache
When I mount the USB drive again 4.008
And I read the content of the test FS 0.364
Then patterns cover at least 99% of the test FS size in the guest's memory 2.637

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

When I umount the USB drive 0.418
Then I find very few patterns in the guest's memory after 3 seconds 5.355

Pattern coverage: 0.000% (0 MiB out of 1411 MiB reference memory)

After features/support/hooks.rb:339 1.098
After features/support/hooks.rb:108 0.000
45.462
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 6.540
And I prepare Tails for memory erasure tests 0.344
When I fill a 128 MiB file with a known pattern on the root filesystem 13.439
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.649
Then patterns cover at least 128 MiB in the guest's memory 2.592

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

When I trigger shutdown 0.011
Then I find very few patterns in the guest's memory after 20 seconds 20.884

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

After features/support/hooks.rb:339 3.641
After features/support/hooks.rb:108 0.000
4:26.701
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 3:55.183
And I prepare Tails for memory erasure tests 0.302
When I fill a 128 MiB file with a known pattern on the persistent filesystem 10.057
When I trigger shutdown 0.007
Then I find very few patterns in the guest's memory after 20 seconds 21.150

Pattern coverage: 0.000% (0 MiB out of 1395 MiB reference memory)

After features/support/hooks.rb:339 3.538
After features/support/hooks.rb:108 0.013