Project Number Date
test_Tails_ISO_7929-celluloid-flatpak 55 09 Jun 2026, 14:49

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 7:55.604 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.
18.952
Before features/support/hooks.rb:270 0.000
Before features/support/hooks.rb:277 0.001
Given I have started Tails from DVD without network and logged in 6.896
And I prepare Tails for memory erasure tests 0.365
When I start a process allocating 128 MiB of memory with a known pattern 2.197
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 2.254

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

When I kill the allocating process 0.190
Then I find very few patterns in the guest's memory after 5 seconds 7.047

Pattern coverage: 0.000% (0 MiB out of 1468 MiB reference memory)

After features/support/hooks.rb:335 1.012
After features/support/hooks.rb:104 0.000
18.435
Before features/support/hooks.rb:270 0.000
Before features/support/hooks.rb:277 0.002
Given I have started Tails from DVD without network and logged in 6.863
And I prepare Tails for memory erasure tests 0.372
And I find very few patterns in the guest's memory 1.774

Pattern coverage: 0.000% (0 MiB out of 1477 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.786
Then patterns cover at least 99% of the test FS size in the guest's memory 2.102

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

When I umount "/mnt" 0.433
Then I find very few patterns in the guest's memory after 3 seconds 5.103

Pattern coverage: 0.000% (0 MiB out of 1477 MiB reference memory)

After features/support/hooks.rb:335 0.943
After features/support/hooks.rb:104 0.000
34.651
Before features/support/hooks.rb:270 0.000
Before features/support/hooks.rb:277 0.002
Given I have started Tails from DVD without network and logged in 7.014
And I prepare Tails for memory erasure tests 0.376
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.546
Then I find very few patterns in the guest's memory 2.361

Pattern coverage: 0.000% (0 MiB out of 1476 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.894
Then patterns cover at least 75% of the test FS size in the guest's memory 2.565

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

When I umount the USB drive 0.852
Then I find very few patterns in the guest's memory after 3 seconds 4.750

Pattern coverage: 0.000% (0 MiB out of 1476 MiB reference memory)

# read cache
When I mount the USB drive again 0.182
And I read the content of the test FS 0.414
Then patterns cover at least 99% of the test FS size in the guest's memory 2.098

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

When I umount the USB drive 0.508
Then I find very few patterns in the guest's memory after 3 seconds 5.083

Pattern coverage: 0.000% (0 MiB out of 1476 MiB reference memory)

After features/support/hooks.rb:335 0.694
After features/support/hooks.rb:104 0.000
1:1.975
Before features/support/hooks.rb:270 0.000
Before features/support/hooks.rb:277 0.010
Given I have started Tails from DVD without network and logged in 7.378
And I prepare Tails for memory erasure tests 0.428
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 30.090
Then I find very few patterns in the guest's memory 3.413

Pattern coverage: 0.000% (0 MiB out of 1476 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.599
Then patterns cover at least 99% of the test FS size in the guest's memory 1.876

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

When I umount the USB drive 0.530
Then I find very few patterns in the guest's memory after 3 seconds 4.771

Pattern coverage: 0.000% (0 MiB out of 1476 MiB reference memory)

# read cache
When I mount the USB drive again 4.064
And I read the content of the test FS 0.340
Then patterns cover at least 99% of the test FS size in the guest's memory 1.989

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

When I umount the USB drive 0.377
Then I find very few patterns in the guest's memory after 3 seconds 5.115

Pattern coverage: 0.000% (0 MiB out of 1476 MiB reference memory)

After features/support/hooks.rb:335 0.941
After features/support/hooks.rb:104 0.000
54.842
Before features/support/hooks.rb:270 0.000
Before features/support/hooks.rb:277 0.002
Given I have started Tails from DVD without network and logged in 7.015
And I prepare Tails for memory erasure tests 0.347
When I fill a 128 MiB file with a known pattern on the root filesystem 23.498
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.857
Then patterns cover at least 128 MiB in the guest's memory 1.608

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 20.509

Pattern coverage: 0.000% (0 MiB out of 1473 MiB reference memory)

After features/support/hooks.rb:335 4.025
After features/support/hooks.rb:104 0.000
4:46.746
Before features/support/hooks.rb:270 0.000
Before features/support/hooks.rb:277 0.002
Given I have started Tails without network from a USB drive with a persistent partition enabled and logged in 4:1.824
And I prepare Tails for memory erasure tests 0.434
When I fill a 128 MiB file with a known pattern on the persistent filesystem 23.457
When I trigger shutdown 0.006
Then I find very few patterns in the guest's memory after 20 seconds 21.023

Pattern coverage: 0.000% (0 MiB out of 1472 MiB reference memory)

After features/support/hooks.rb:335 3.660
After features/support/hooks.rb:104 0.011