Project Number Date
test_Tails_ISO_21170-upgrade-trixie-13.5 1 18 May 2026, 13:46

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 7:36.265 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.
17.494
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 6.599
And I prepare Tails for memory erasure tests 0.393
When I start a process allocating 128 MiB of memory with a known pattern 1.159
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 2.111

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

When I kill the allocating process 0.206
Then I find very few patterns in the guest's memory after 5 seconds 7.024

Pattern coverage: 0.000% (0 MiB out of 1525 MiB reference memory)

After features/support/hooks.rb:335 0.780
After features/support/hooks.rb:104 0.000
17.943
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 6.555
And I prepare Tails for memory erasure tests 0.445
And I find very few patterns in the guest's memory 1.734

Pattern coverage: 0.000% (0 MiB out of 1524 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.661
Then patterns cover at least 99% of the test FS size in the guest's memory 2.317

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

When I umount "/mnt" 0.352
Then I find very few patterns in the guest's memory after 3 seconds 4.876

Pattern coverage: 0.000% (0 MiB out of 1524 MiB reference memory)

After features/support/hooks.rb:335 0.997
After features/support/hooks.rb:104 0.000
33.718
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 6.930
And I prepare Tails for memory erasure tests 0.409
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.609
Then I find very few patterns in the guest's memory 2.060

Pattern coverage: 0.000% (0 MiB out of 1529 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.683
Then patterns cover at least 75% of the test FS size in the guest's memory 2.410

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

When I umount the USB drive 0.806
Then I find very few patterns in the guest's memory after 3 seconds 4.700

Pattern coverage: 0.000% (0 MiB out of 1529 MiB reference memory)

# read cache
When I mount the USB drive again 0.182
And I read the content of the test FS 0.410
Then patterns cover at least 99% of the test FS size in the guest's memory 2.023

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

When I umount the USB drive 0.373
Then I find very few patterns in the guest's memory after 3 seconds 5.117

Pattern coverage: 0.000% (0 MiB out of 1529 MiB reference memory)

After features/support/hooks.rb:335 1.058
After features/support/hooks.rb:104 0.000
56.261
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 7.079
And I prepare Tails for memory erasure tests 0.456
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 26.979
Then I find very few patterns in the guest's memory 1.681

Pattern coverage: 0.000% (0 MiB out of 1523 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.488
Then patterns cover at least 99% of the test FS size in the guest's memory 2.194

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

When I umount the USB drive 0.592
Then I find very few patterns in the guest's memory after 3 seconds 4.818

Pattern coverage: 0.000% (0 MiB out of 1523 MiB reference memory)

# read cache
When I mount the USB drive again 3.609
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 1.899

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

When I umount the USB drive 0.488
Then I find very few patterns in the guest's memory after 3 seconds 4.631

Pattern coverage: 0.000% (0 MiB out of 1523 MiB reference memory)

After features/support/hooks.rb:335 1.372
After features/support/hooks.rb:104 0.000
52.419
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 6.887
And I prepare Tails for memory erasure tests 0.378
When I fill a 128 MiB file with a known pattern on the root filesystem 21.030
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 2.097
Then patterns cover at least 128 MiB in the guest's memory 1.516

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

When I trigger shutdown 0.007
Then I find very few patterns in the guest's memory after 20 seconds 20.501

Pattern coverage: 0.000% (0 MiB out of 1530 MiB reference memory)

After features/support/hooks.rb:335 3.696
After features/support/hooks.rb:104 0.000
4:38.426
Before features/support/hooks.rb:270 0.000
Before features/support/hooks.rb:277 0.001
Given I have started Tails without network from a USB drive with a persistent partition enabled and logged in 3:58.760
And I prepare Tails for memory erasure tests 0.347
When I fill a 128 MiB file with a known pattern on the persistent filesystem 18.401
When I trigger shutdown 0.009
Then I find very few patterns in the guest's memory after 20 seconds 20.909

Pattern coverage: 0.000% (0 MiB out of 1509 MiB reference memory)

After features/support/hooks.rb:335 3.821
After features/support/hooks.rb:104 0.010