Project Number Date
test_Tails_ISO_7929-celluloid-flatpak 5 30 Apr 2026, 14:41

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 7:29.577 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.
18.466
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 6.786
And I prepare Tails for memory erasure tests 0.313
When I start a process allocating 128 MiB of memory with a known pattern 2.240
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 2.008

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

When I kill the allocating process 0.238
Then I find very few patterns in the guest's memory after 5 seconds 6.878

Pattern coverage: 0.000% (0 MiB out of 1494 MiB reference memory)

After features/support/hooks.rb:331 0.872
After features/support/hooks.rb:100 0.000
17.876
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 6.924
And I prepare Tails for memory erasure tests 0.357
And I find very few patterns in the guest's memory 1.672

Pattern coverage: 0.000% (0 MiB out of 1501 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.492
Then patterns cover at least 99% of the test FS size in the guest's memory 2.024

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

When I umount "/mnt" 0.368
Then I find very few patterns in the guest's memory after 3 seconds 5.036

Pattern coverage: 0.000% (0 MiB out of 1501 MiB reference memory)

After features/support/hooks.rb:331 0.967
After features/support/hooks.rb:100 0.000
32.632
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 7.003
And I prepare Tails for memory erasure tests 0.382
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.144
Then I find very few patterns in the guest's memory 2.054

Pattern coverage: 0.000% (0 MiB out of 1491 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.531
Then patterns cover at least 75% of the test FS size in the guest's memory 2.207

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

When I umount the USB drive 0.736
Then I find very few patterns in the guest's memory after 3 seconds 4.946

Pattern coverage: 0.000% (0 MiB out of 1491 MiB reference memory)

# read cache
When I mount the USB drive again 0.146
And I read the content of the test FS 0.448
Then patterns cover at least 99% of the test FS size in the guest's memory 1.898

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

When I umount the USB drive 0.405
Then I find very few patterns in the guest's memory after 3 seconds 4.725

Pattern coverage: 0.000% (0 MiB out of 1491 MiB reference memory)

After features/support/hooks.rb:331 0.687
After features/support/hooks.rb:100 0.000
1:3.124
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 6.759
And I prepare Tails for memory erasure tests 0.503
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 33.391
Then I find very few patterns in the guest's memory 1.746

Pattern coverage: 0.000% (0 MiB out of 1497 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.338
Then patterns cover at least 99% of the test FS size in the guest's memory 2.042

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

When I umount the USB drive 0.533
Then I find very few patterns in the guest's memory after 3 seconds 4.736

Pattern coverage: 0.000% (0 MiB out of 1497 MiB reference memory)

# read cache
When I mount the USB drive again 4.679
And I read the content of the test FS 0.284
Then patterns cover at least 99% of the test FS size in the guest's memory 1.834

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

When I umount the USB drive 0.435
Then I find very few patterns in the guest's memory after 3 seconds 4.838

Pattern coverage: 0.000% (0 MiB out of 1497 MiB reference memory)

After features/support/hooks.rb:331 0.666
After features/support/hooks.rb:100 0.000
43.392
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 7.017
And I prepare Tails for memory erasure tests 0.380
When I fill a 128 MiB file with a known pattern on the root filesystem 12.256
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.566
Then patterns cover at least 128 MiB in the guest's memory 1.610

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

When I trigger shutdown 0.012
Then I find very few patterns in the guest's memory after 20 seconds 20.549

Pattern coverage: 0.000% (0 MiB out of 1491 MiB reference memory)

After features/support/hooks.rb:331 3.772
After features/support/hooks.rb:100 0.000
4:34.084
Before features/support/hooks.rb:266 0.000
Before features/support/hooks.rb:273 0.005
Given I have started Tails without network from a USB drive with a persistent partition enabled and logged in 4:1.864
And I prepare Tails for memory erasure tests 0.360
When I fill a 128 MiB file with a known pattern on the persistent filesystem 10.711
When I trigger shutdown 0.006
Then I find very few patterns in the guest's memory after 20 seconds 21.141

Pattern coverage: 0.000% (0 MiB out of 1499 MiB reference memory)

After features/support/hooks.rb:331 3.761
After features/support/hooks.rb:100 0.013