Project Number Date
test_Tails_ISO_stable 5999 10 Dec 2025, 20:28

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 15:54.109 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
1:2.927
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 7.764
And I prepare Tails for memory erasure tests 0.376
When I start a process allocating 128 MiB of memory with a known pattern 1.149
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 24.387 
Pattern coverage: 100.394% (127 MiB out of 127 MiB reference memory)
When I kill the allocating process 0.141
Then I find very few patterns in the guest's memory after 5 seconds 29.108 
Pattern coverage: 0.000% (0 MiB out of 1486 MiB reference memory)
After features/support/hooks.rb:331 1.026
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
1:11.381
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 8.986
And I prepare Tails for memory erasure tests 0.377
And I find very few patterns in the guest's memory 22.144 
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 0.638
Then patterns cover at least 99% of the test FS size in the guest's memory 16.509 
Pattern coverage: 100.000% (128 MiB out of 128 MiB reference memory)
When I umount "/mnt" 0.103
Then I find very few patterns in the guest's memory after 3 seconds 22.620 
Pattern coverage: 0.000% (0 MiB out of 1476 MiB reference memory)
After features/support/hooks.rb:331 1.064
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
3:33.660
Before features/support/hooks.rb:266 0.000
Before features/support/hooks.rb:273 0.005
Given I have started Tails from DVD without network and logged in 7.861
And I prepare Tails for memory erasure tests 0.401
When I plug and mount a 128 MiB USB drive with a vfat filesystem 6.954
Then I find very few patterns in the guest's memory 38.235 
Pattern coverage: 0.000% (0 MiB out of 1489 MiB reference memory)
# write cache
When I fill the USB drive with a known pattern 2.767
Then patterns cover at least 75% of the test FS size in the guest's memory 50.196 
Pattern coverage: 100.000% (127 MiB out of 127 MiB reference memory)
When I umount the USB drive 0.280
Then I find very few patterns in the guest's memory after 3 seconds 1:0.207 
Pattern coverage: 0.000% (0 MiB out of 1489 MiB reference memory)
# read cache
When I mount the USB drive again 0.160
And I read the content of the test FS 0.510
Then patterns cover at least 99% of the test FS size in the guest's memory 15.350 
Pattern coverage: 100.000% (127 MiB out of 127 MiB reference memory)
When I umount the USB drive 0.138
Then I find very few patterns in the guest's memory after 3 seconds 30.595 
Pattern coverage: 0.000% (0 MiB out of 1489 MiB reference memory)
After features/support/hooks.rb:331 0.986
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
2:13.247
Before features/support/hooks.rb:266 0.000
Before features/support/hooks.rb:273 0.010
Given I have started Tails from DVD without network and logged in 8.301
And I prepare Tails for memory erasure tests 0.355
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 35.676
Then I find very few patterns in the guest's memory 13.889 
Pattern coverage: 0.000% (0 MiB out of 1491 MiB reference memory)
# write cache
When I fill the USB drive with a known pattern 1.337
Then patterns cover at least 99% of the test FS size in the guest's memory 20.922 
Pattern coverage: 106.115% (97 MiB out of 91 MiB reference memory)
When I umount the USB drive 0.410
Then I find very few patterns in the guest's memory after 3 seconds 19.904 
Pattern coverage: 0.000% (0 MiB out of 1491 MiB reference memory)
# read cache
When I mount the USB drive again 2.214
And I read the content of the test FS 0.383
Then patterns cover at least 99% of the test FS size in the guest's memory 14.063 
Pattern coverage: 106.115% (97 MiB out of 91 MiB reference memory)
When I umount the USB drive 0.349
Then I find very few patterns in the guest's memory after 3 seconds 15.438 
Pattern coverage: 0.000% (0 MiB out of 1491 MiB reference memory)
After features/support/hooks.rb:331 0.642
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
1:11.277
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 8.233
And I prepare Tails for memory erasure tests 0.374
When I fill a 128 MiB file with a known pattern on the root filesystem 9.361
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 0.324
Then patterns cover at least 128 MiB in the guest's memory 27.441 
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 25.529 
Pattern coverage: 0.000% (0 MiB out of 1494 MiB reference memory)
After features/support/hooks.rb:331 3.572
After features/support/hooks.rb:100 0.000
Tags: @product @slow @not_release_blocker
6:41.614
Before features/support/hooks.rb:266 0.000
Before features/support/hooks.rb:273 0.002
Given I have started Tails without network from a USB drive with a persistent partition enabled and logged in 6:9.800
And I prepare Tails for memory erasure tests 0.344
When I fill a 128 MiB file with a known pattern on the persistent filesystem 8.463
When I trigger shutdown 0.011
Then I find very few patterns in the guest's memory after 20 seconds 22.993 
Pattern coverage: 0.000% (0 MiB out of 1552 MiB reference memory)
After features/support/hooks.rb:331 3.673
After features/support/hooks.rb:100 0.014