Project Number Date
test_Tails_ISO_test-snapshot-restore-improvements 5 23 Aug 2026, 13:08

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 13:26.337 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
17.486
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.003
Given I have started Tails from DVD without network and logged in 3.733
And I prepare Tails for memory erasure tests 0.331
When I start a process allocating 128 MiB of memory with a known pattern 2.246
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 3.083 
Pattern coverage: 100.395% (127 MiB out of 127 MiB reference memory)
When I kill the allocating process 0.197
Then I find very few patterns in the guest's memory after 5 seconds 7.894 
Pattern coverage: 0.000% (0 MiB out of 1477 MiB reference memory)
After features/support/hooks.rb:339 0.726
After features/support/hooks.rb:108 0.000
Tags: @product @slow @not_release_blocker
17.292
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 3.704
And I prepare Tails for memory erasure tests 0.300
And I find very few patterns in the guest's memory 2.750 
Pattern coverage: 0.000% (0 MiB out of 1476 MiB reference memory)
When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.521
Then patterns cover at least 99% of the test FS size in the guest's memory 2.748 
Pattern coverage: 100.000% (128 MiB out of 128 MiB reference memory)
When I umount "/mnt" 0.355
Then I find very few patterns in the guest's memory after 3 seconds 5.911 
Pattern coverage: 0.000% (0 MiB out of 1476 MiB reference memory)
After features/support/hooks.rb:339 0.944
After features/support/hooks.rb:108 0.000
Tags: @product @slow @not_release_blocker
35.491
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.003
Given I have started Tails from DVD without network and logged in 3.881
And I prepare Tails for memory erasure tests 0.352
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.437
Then I find very few patterns in the guest's memory 2.877 
Pattern coverage: 0.000% (0 MiB out of 1477 MiB reference memory)
# write cache
When I fill the USB drive with a known pattern 2.807
Then patterns cover at least 75% of the test FS size in the guest's memory 3.066 
Pattern coverage: 100.000% (127 MiB out of 127 MiB reference memory)
When I umount the USB drive 0.830
Then I find very few patterns in the guest's memory after 3 seconds 5.748 
Pattern coverage: 0.000% (0 MiB out of 1477 MiB reference memory)
# read cache
When I mount the USB drive again 0.183
And I read the content of the test FS 0.609
Then patterns cover at least 99% of the test FS size in the guest's memory 2.912 
Pattern coverage: 100.000% (127 MiB out of 127 MiB reference memory)
When I umount the USB drive 0.446
Then I find very few patterns in the guest's memory after 3 seconds 6.335 
Pattern coverage: 0.000% (0 MiB out of 1477 MiB reference memory)
After features/support/hooks.rb:339 0.831
After features/support/hooks.rb:108 0.000
Tags: @product @slow @not_release_blocker
1:0.474
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.003
Given I have started Tails from DVD without network and logged in 3.841
And I prepare Tails for memory erasure tests 0.381
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 29.850
Then I find very few patterns in the guest's memory 2.624 
Pattern coverage: 0.000% (0 MiB out of 1478 MiB reference memory)
# write cache
When I fill the USB drive with a known pattern 1.469
Then patterns cover at least 99% of the test FS size in the guest's memory 3.125 
Pattern coverage: 106.115% (97 MiB out of 91 MiB reference memory)
When I umount the USB drive 0.532
Then I find very few patterns in the guest's memory after 3 seconds 5.590 
Pattern coverage: 0.000% (0 MiB out of 1478 MiB reference memory)
# read cache
When I mount the USB drive again 3.690
And I read the content of the test FS 0.356
Then patterns cover at least 99% of the test FS size in the guest's memory 2.883 
Pattern coverage: 106.115% (97 MiB out of 91 MiB reference memory)
When I umount the USB drive 0.404
Then I find very few patterns in the guest's memory after 3 seconds 5.722 
Pattern coverage: 0.000% (0 MiB out of 1478 MiB reference memory)
After features/support/hooks.rb:339 0.823
After features/support/hooks.rb:108 0.000
Tags: @product @slow @not_release_blocker
41.863
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 3.834
And I prepare Tails for memory erasure tests 0.379
When I fill a 128 MiB file with a known pattern on the root filesystem 12.624
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.819
Then patterns cover at least 128 MiB in the guest's memory 2.350 
Pattern coverage: 100.000% (128 MiB out of 128 MiB reference memory)
When I trigger shutdown 0.011
Then I find very few patterns in the guest's memory after 20 seconds 20.843 
Pattern coverage: 0.000% (0 MiB out of 1479 MiB reference memory)
After features/support/hooks.rb:339 3.703
After features/support/hooks.rb:108 0.000
Tags: @product @slow @not_release_blocker
10:33.729
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.002
Given I have started Tails without network from a USB drive with a persistent partition enabled and logged in 10:0.651
And I prepare Tails for memory erasure tests 0.387
When I fill a 128 MiB file with a known pattern on the persistent filesystem 11.569
When I trigger shutdown 0.006
Then I find very few patterns in the guest's memory after 20 seconds 21.115 
Pattern coverage: 0.000% (0 MiB out of 1470 MiB reference memory)
After features/support/hooks.rb:339 3.685
After features/support/hooks.rb:108 0.009