Project Number Date
test_Tails_ISO_7929-celluloid-flatpak 15 09 May 2026, 13:59

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 7:23.153 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.
18.547
Before features/support/hooks.rb:266 0.000
Before features/support/hooks.rb:273 0.002
Given I have started Tails from DVD without network and logged in 6.429
And I prepare Tails for memory erasure tests 0.417
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 1.875

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

When I kill the allocating process 0.887
Then I find very few patterns in the guest's memory after 5 seconds 6.709

Pattern coverage: 0.000% (0 MiB out of 1451 MiB reference memory)

After features/support/hooks.rb:331 0.664
After features/support/hooks.rb:100 0.000
16.742
Before features/support/hooks.rb:266 0.000
Before features/support/hooks.rb:273 0.001
Given I have started Tails from DVD without network and logged in 6.378
And I prepare Tails for memory erasure tests 0.361
And I find very few patterns in the guest's memory 1.622

Pattern coverage: 0.000% (0 MiB out of 1451 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.570
Then patterns cover at least 99% of the test FS size in the guest's memory 1.761

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

When I umount "/mnt" 0.313
Then I find very few patterns in the guest's memory after 3 seconds 4.734

Pattern coverage: 0.000% (0 MiB out of 1451 MiB reference memory)

After features/support/hooks.rb:331 0.989
After features/support/hooks.rb:100 0.000
30.589
Before features/support/hooks.rb:266 0.000
Before features/support/hooks.rb:273 0.001
Given I have started Tails from DVD without network and logged in 6.403
And I prepare Tails for memory erasure tests 0.380
When I plug and mount a 128 MiB USB drive with a vfat filesystem 4.953
Then I find very few patterns in the guest's memory 1.668

Pattern coverage: 0.000% (0 MiB out of 1463 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.443
Then patterns cover at least 75% of the test FS size in the guest's memory 1.958

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

When I umount the USB drive 0.697
Then I find very few patterns in the guest's memory after 3 seconds 4.673

Pattern coverage: 0.000% (0 MiB out of 1463 MiB reference memory)

# read cache
When I mount the USB drive again 0.145
And I read the content of the test FS 0.467
Then patterns cover at least 99% of the test FS size in the guest's memory 1.833

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

When I umount the USB drive 0.340
Then I find very few patterns in the guest's memory after 3 seconds 4.623

Pattern coverage: 0.000% (0 MiB out of 1463 MiB reference memory)

After features/support/hooks.rb:331 0.619
After features/support/hooks.rb:100 0.000
56.242
Before features/support/hooks.rb:266 0.000
Before features/support/hooks.rb:273 0.001
Given I have started Tails from DVD without network and logged in 6.489
And I prepare Tails for memory erasure tests 0.397
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 28.125
Then I find very few patterns in the guest's memory 1.579

Pattern coverage: 0.000% (0 MiB out of 1463 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.319
Then patterns cover at least 99% of the test FS size in the guest's memory 1.843

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

When I umount the USB drive 0.525
Then I find very few patterns in the guest's memory after 3 seconds 4.675

Pattern coverage: 0.000% (0 MiB out of 1463 MiB reference memory)

# read cache
When I mount the USB drive again 4.266
And I read the content of the test FS 0.267
Then patterns cover at least 99% of the test FS size in the guest's memory 1.827

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

When I umount the USB drive 0.376
Then I find very few patterns in the guest's memory after 3 seconds 4.548

Pattern coverage: 0.000% (0 MiB out of 1463 MiB reference memory)

After features/support/hooks.rb:331 1.022
After features/support/hooks.rb:100 0.000
56.011
Before features/support/hooks.rb:266 0.000
Before features/support/hooks.rb:273 0.001
Given I have started Tails from DVD without network and logged in 6.354
And I prepare Tails for memory erasure tests 0.420
When I fill a 128 MiB file with a known pattern on the root filesystem 25.543
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.668
Then patterns cover at least 128 MiB in the guest's memory 1.546

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

When I trigger shutdown 0.005
Then I find very few patterns in the guest's memory after 20 seconds 20.472

Pattern coverage: 0.000% (0 MiB out of 1455 MiB reference memory)

After features/support/hooks.rb:331 3.608
After features/support/hooks.rb:100 0.000
4:25.020
Before features/support/hooks.rb:266 0.000
Before features/support/hooks.rb:273 0.001
Given I have started Tails without network from a USB drive with a persistent partition enabled and logged in 3:42.857
And I prepare Tails for memory erasure tests 0.295
When I fill a 128 MiB file with a known pattern on the persistent filesystem 20.902
When I trigger shutdown 0.004
Then I find very few patterns in the guest's memory after 20 seconds 20.959

Pattern coverage: 0.000% (0 MiB out of 1483 MiB reference memory)

After features/support/hooks.rb:331 3.695
After features/support/hooks.rb:100 0.008