Project Number Date
test_Tails_ISO_21641-update-moat-frontends 1 13 Aug 2026, 15:22

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 7:49.223 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.
32.453
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 18.383
And I prepare Tails for memory erasure tests 0.486
When I start a process allocating 128 MiB of memory with a known pattern 2.214
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 2.861

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

When I kill the allocating process 0.225
Then I find very few patterns in the guest's memory after 5 seconds 8.282

Pattern coverage: 0.000% (0 MiB out of 1442 MiB reference memory)

After features/support/hooks.rb:339 0.919
After features/support/hooks.rb:108 0.000
20.753
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 7.092
And I prepare Tails for memory erasure tests 0.322
And I find very few patterns in the guest's memory 2.837

Pattern coverage: 0.000% (0 MiB out of 1444 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.673
Then patterns cover at least 99% of the test FS size in the guest's memory 2.821

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

When I umount "/mnt" 0.384
Then I find very few patterns in the guest's memory after 3 seconds 5.621

Pattern coverage: 0.000% (0 MiB out of 1444 MiB reference memory)

After features/support/hooks.rb:339 1.010
After features/support/hooks.rb:108 0.000
38.045
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 6.674
And I prepare Tails for memory erasure tests 0.311
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.356
Then I find very few patterns in the guest's memory 2.969

Pattern coverage: 0.000% (0 MiB out of 1439 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.664
Then patterns cover at least 75% of the test FS size in the guest's memory 3.263

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

When I umount the USB drive 0.976
Then I find very few patterns in the guest's memory after 3 seconds 5.682

Pattern coverage: 0.000% (0 MiB out of 1439 MiB reference memory)

# read cache
When I mount the USB drive again 0.192
And I read the content of the test FS 0.556
Then patterns cover at least 99% of the test FS size in the guest's memory 2.837

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

When I umount the USB drive 0.395
Then I find very few patterns in the guest's memory after 3 seconds 6.163

Pattern coverage: 0.000% (0 MiB out of 1439 MiB reference memory)

After features/support/hooks.rb:339 0.791
After features/support/hooks.rb:108 0.000
1:2.153
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 6.583
And I prepare Tails for memory erasure tests 0.343
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 28.763
Then I find very few patterns in the guest's memory 2.685

Pattern coverage: 0.000% (0 MiB out of 1437 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.278
Then patterns cover at least 99% of the test FS size in the guest's memory 2.725

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

When I umount the USB drive 0.616
Then I find very few patterns in the guest's memory after 3 seconds 5.646

Pattern coverage: 0.000% (0 MiB out of 1437 MiB reference memory)

# read cache
When I mount the USB drive again 4.139
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 2.734

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

When I umount the USB drive 0.526
Then I find very few patterns in the guest's memory after 3 seconds 5.742

Pattern coverage: 0.000% (0 MiB out of 1437 MiB reference memory)

After features/support/hooks.rb:339 0.896
After features/support/hooks.rb:108 0.000
45.828
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 6.759
And I prepare Tails for memory erasure tests 0.341
When I fill a 128 MiB file with a known pattern on the root filesystem 13.798
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.938
Then patterns cover at least 128 MiB in the guest's memory 2.189

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

When I trigger shutdown 0.010
Then I find very few patterns in the guest's memory after 20 seconds 20.792

Pattern coverage: 0.000% (0 MiB out of 1446 MiB reference memory)

After features/support/hooks.rb:339 3.731
After features/support/hooks.rb:108 0.000
4:29.989
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 3:58.822
And I prepare Tails for memory erasure tests 0.294
When I fill a 128 MiB file with a known pattern on the persistent filesystem 9.808
When I trigger shutdown 0.004
Then I find very few patterns in the guest's memory after 20 seconds 21.058

Pattern coverage: 0.000% (0 MiB out of 1456 MiB reference memory)

After features/support/hooks.rb:339 3.753
After features/support/hooks.rb:108 0.013