Project Number Date
test_Tails_ISO_21472-circumvention-settings-2 5 31 Mar 2026, 02:36

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 7:18.850 Passed
Tags: @product @slow @not_release_blocker
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.
Tags: @product @slow @not_release_blocker
18.752
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 6.434
And I prepare Tails for memory erasure tests 0.325
When I start a process allocating 128 MiB of memory with a known pattern 2.536
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 1.990 
Pattern coverage: 100.395% (127 MiB out of 127 MiB reference memory)
When I kill the allocating process 0.701
Then I find very few patterns in the guest's memory after 5 seconds 6.764 
Pattern coverage: 0.000% (0 MiB out of 1477 MiB reference memory)
After features/support/hooks.rb:331 1.243
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
17.480
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 6.480
And I prepare Tails for memory erasure tests 0.351
And I find very few patterns in the guest's memory 1.783 
Pattern coverage: 0.000% (0 MiB out of 1492 MiB reference memory)
When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.797
Then patterns cover at least 99% of the test FS size in the guest's memory 1.917 
Pattern coverage: 100.000% (128 MiB out of 128 MiB reference memory)
When I umount "/mnt" 0.453
Then I find very few patterns in the guest's memory after 3 seconds 4.696 
Pattern coverage: 0.000% (0 MiB out of 1492 MiB reference memory)
After features/support/hooks.rb:331 1.040
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
31.475
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 6.479
And I prepare Tails for memory erasure tests 0.475
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.182
Then I find very few patterns in the guest's memory 1.892 
Pattern coverage: 0.000% (0 MiB out of 1486 MiB reference memory)
# write cache
When I fill the USB drive with a known pattern 2.311
Then patterns cover at least 75% of the test FS size in the guest's memory 2.035 
Pattern coverage: 100.000% (127 MiB out of 127 MiB reference memory)
When I umount the USB drive 0.704
Then I find very few patterns in the guest's memory after 3 seconds 4.683 
Pattern coverage: 0.000% (0 MiB out of 1486 MiB reference memory)
# read cache
When I mount the USB drive again 0.208
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 1.854 
Pattern coverage: 100.000% (127 MiB out of 127 MiB reference memory)
When I umount the USB drive 0.453
Then I find very few patterns in the guest's memory after 3 seconds 4.746 
Pattern coverage: 0.000% (0 MiB out of 1486 MiB reference memory)
After features/support/hooks.rb:331 1.234
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
1:3.814
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 6.601
And I prepare Tails for memory erasure tests 0.367
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 33.802
Then I find very few patterns in the guest's memory 1.684 
Pattern coverage: 0.000% (0 MiB out of 1489 MiB reference memory)
# write cache
When I fill the USB drive with a known pattern 2.222
Then patterns cover at least 99% of the test FS size in the guest's memory 1.762 
Pattern coverage: 106.115% (97 MiB out of 91 MiB reference memory)
When I umount the USB drive 0.657
Then I find very few patterns in the guest's memory after 3 seconds 4.483 
Pattern coverage: 0.000% (0 MiB out of 1489 MiB reference memory)
# read cache
When I mount the USB drive again 4.996
And I read the content of the test FS 0.379
Then patterns cover at least 99% of the test FS size in the guest's memory 1.787 
Pattern coverage: 106.115% (97 MiB out of 91 MiB reference memory)
When I umount the USB drive 0.425
Then I find very few patterns in the guest's memory after 3 seconds 4.642 
Pattern coverage: 0.000% (0 MiB out of 1489 MiB reference memory)
After features/support/hooks.rb:331 1.473
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
51.277
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 6.519
And I prepare Tails for memory erasure tests 0.359
When I fill a 128 MiB file with a known pattern on the root filesystem 12.208
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 10.213
Then patterns cover at least 128 MiB in the guest's memory 1.486 
Pattern coverage: 100.000% (128 MiB out of 128 MiB reference memory)
When I trigger shutdown 0.006
Then I find very few patterns in the guest's memory after 20 seconds 20.483 
Pattern coverage: 0.000% (0 MiB out of 1461 MiB reference memory)
After features/support/hooks.rb:331 3.436
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
4:16.050
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 3:44.936
And I prepare Tails for memory erasure tests 0.276
When I fill a 128 MiB file with a known pattern on the persistent filesystem 9.999
When I trigger shutdown 0.004
Then I find very few patterns in the guest's memory after 20 seconds 20.833 
Pattern coverage: 0.000% (0 MiB out of 1513 MiB reference memory)
After features/support/hooks.rb:331 3.653
After features/support/hooks.rb:100 0.009