Project Number Date
test_Tails_ISO_stable-flatpak 38 06 Oct 2026, 19:53

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 7:49.470 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.
20.324
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 6.295
And I prepare Tails for memory erasure tests 0.351
When I start a process allocating 128 MiB of memory with a known pattern 2.172
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 3.453

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

When I kill the allocating process 0.207
Then I find very few patterns in the guest's memory after 5 seconds 7.843

Pattern coverage: 0.000% (0 MiB out of 1405 MiB reference memory)

After features/support/hooks.rb:339 0.873
After features/support/hooks.rb:108 0.000
20.842
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.008
Given I have started Tails from DVD without network and logged in 6.207
And I prepare Tails for memory erasure tests 0.286
And I find very few patterns in the guest's memory 3.852

Pattern coverage: 0.000% (0 MiB out of 1403 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.399
Then patterns cover at least 99% of the test FS size in the guest's memory 3.067

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

When I umount "/mnt" 0.382
Then I find very few patterns in the guest's memory after 3 seconds 5.647

Pattern coverage: 0.000% (0 MiB out of 1403 MiB reference memory)

After features/support/hooks.rb:339 0.878
After features/support/hooks.rb:108 0.000
38.076
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 6.340
And I prepare Tails for memory erasure tests 0.376
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.683
Then I find very few patterns in the guest's memory 3.002

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

# write cache
When I fill the USB drive with a known pattern 2.588
Then patterns cover at least 75% of the test FS size in the guest's memory 3.047

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

When I umount the USB drive 0.680
Then I find very few patterns in the guest's memory after 3 seconds 6.263

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

# read cache
When I mount the USB drive again 0.251
And I read the content of the test FS 0.578
Then patterns cover at least 99% of the test FS size in the guest's memory 2.996

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

When I umount the USB drive 0.460
Then I find very few patterns in the guest's memory after 3 seconds 5.806

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

After features/support/hooks.rb:339 0.653
After features/support/hooks.rb:108 0.000
1:4.784
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.006
Given I have started Tails from DVD without network and logged in 6.243
And I prepare Tails for memory erasure tests 0.352
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 31.963
Then I find very few patterns in the guest's memory 2.586

Pattern coverage: 0.000% (0 MiB out of 1396 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 3.108

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

When I umount the USB drive 0.470
Then I find very few patterns in the guest's memory after 3 seconds 5.676

Pattern coverage: 0.000% (0 MiB out of 1396 MiB reference memory)

# read cache
When I mount the USB drive again 3.976
And I read the content of the test FS 0.367
Then patterns cover at least 99% of the test FS size in the guest's memory 2.731

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

When I umount the USB drive 0.422
Then I find very few patterns in the guest's memory after 3 seconds 5.777

Pattern coverage: 0.000% (0 MiB out of 1396 MiB reference memory)

After features/support/hooks.rb:339 0.937
After features/support/hooks.rb:108 0.000
56.617
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 18.186
And I prepare Tails for memory erasure tests 0.334
When I fill a 128 MiB file with a known pattern on the root filesystem 12.951
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.615
Then patterns cover at least 128 MiB in the guest's memory 2.685

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

When I trigger shutdown 0.007
Then I find very few patterns in the guest's memory after 20 seconds 20.836

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

After features/support/hooks.rb:339 3.401
After features/support/hooks.rb:108 0.000
4:28.825
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.001
Given I have started Tails without network from a USB drive with a persistent partition enabled and logged in 3:57.246
And I prepare Tails for memory erasure tests 0.311
When I fill a 128 MiB file with a known pattern on the persistent filesystem 10.080
When I trigger shutdown 0.005
Then I find very few patterns in the guest's memory after 20 seconds 21.181

Pattern coverage: 0.000% (0 MiB out of 1458 MiB reference memory)

After features/support/hooks.rb:339 3.422
After features/support/hooks.rb:108 0.024