Project Number Date
test_Tails_ISO_stable-flatpak 10 09 Sep 2026, 19:33

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 7:47.206 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.
20.208
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 6.396
And I prepare Tails for memory erasure tests 0.428
When I start a process allocating 128 MiB of memory with a known pattern 2.289
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 3.248

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

When I kill the allocating process 0.220
Then I find very few patterns in the guest's memory after 5 seconds 7.624

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

After features/support/hooks.rb:339 1.052
After features/support/hooks.rb:108 0.000
20.772
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 6.503
And I prepare Tails for memory erasure tests 0.357
And I find very few patterns in the guest's memory 2.873

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 1.784
Then patterns cover at least 99% of the test FS size in the guest's memory 3.024

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

When I umount "/mnt" 0.410
Then I find very few patterns in the guest's memory after 3 seconds 5.817

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

After features/support/hooks.rb:339 1.021
After features/support/hooks.rb:108 0.000
40.874
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 6.510
And I prepare Tails for memory erasure tests 0.335
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.640
Then I find very few patterns in the guest's memory 4.314

Pattern coverage: 0.000% (0 MiB out of 1406 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.626
Then patterns cover at least 75% of the test FS size in the guest's memory 3.209

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

When I umount the USB drive 0.816
Then I find very few patterns in the guest's memory after 3 seconds 6.112

Pattern coverage: 0.000% (0 MiB out of 1406 MiB reference memory)

# read cache
When I mount the USB drive again 0.234
And I read the content of the test FS 1.137
Then patterns cover at least 99% of the test FS size in the guest's memory 3.446

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

When I umount the USB drive 0.429
Then I find very few patterns in the guest's memory after 3 seconds 6.060

Pattern coverage: 0.000% (0 MiB out of 1406 MiB reference memory)

After features/support/hooks.rb:339 0.917
After features/support/hooks.rb:108 0.000
1:8.005
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 6.406
And I prepare Tails for memory erasure tests 0.379
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 33.708
Then I find very few patterns in the guest's memory 2.740

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

# write cache
When I fill the USB drive with a known pattern 1.107
Then patterns cover at least 99% of the test FS size in the guest's memory 3.057

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

When I umount the USB drive 0.561
Then I find very few patterns in the guest's memory after 3 seconds 5.587

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

# read cache
When I mount the USB drive again 4.458
And I read the content of the test FS 0.469
Then patterns cover at least 99% of the test FS size in the guest's memory 3.223

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

When I umount the USB drive 0.527
Then I find very few patterns in the guest's memory after 3 seconds 5.779

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

After features/support/hooks.rb:339 0.736
After features/support/hooks.rb:108 0.000
45.038
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 6.579
And I prepare Tails for memory erasure tests 0.368
When I fill a 128 MiB file with a known pattern on the root filesystem 12.631
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.705
Then patterns cover at least 128 MiB in the guest's memory 2.375

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

When I trigger shutdown 0.004
Then I find very few patterns in the guest's memory after 20 seconds 21.373

Pattern coverage: 0.000% (0 MiB out of 1406 MiB reference memory)

After features/support/hooks.rb:339 3.529
After features/support/hooks.rb:108 0.000
4:32.306
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 4:0.581
And I prepare Tails for memory erasure tests 0.328
When I fill a 128 MiB file with a known pattern on the persistent filesystem 9.992
When I trigger shutdown 0.005
Then I find very few patterns in the guest's memory after 20 seconds 21.399

Pattern coverage: 0.000% (0 MiB out of 1400 MiB reference memory)

After features/support/hooks.rb:339 3.401
After features/support/hooks.rb:108 0.012