Project Number Date
test_Tails_ISO_21721-less-verbose-release-process 1 29 Aug 2026, 20:55

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 7:28.105 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.
20.188
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 6.320
And I prepare Tails for memory erasure tests 0.263
When I start a process allocating 128 MiB of memory with a known pattern 2.198
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 2.961

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

When I kill the allocating process 0.726
Then I find very few patterns in the guest's memory after 5 seconds 7.717

Pattern coverage: 0.000% (0 MiB out of 1458 MiB reference memory)

After features/support/hooks.rb:339 1.042
After features/support/hooks.rb:108 0.000
19.986
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 6.359
And I prepare Tails for memory erasure tests 0.320
And I find very few patterns in the guest's memory 2.635

Pattern coverage: 0.000% (0 MiB out of 1463 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.420
Then patterns cover at least 99% of the test FS size in the guest's memory 3.116

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

When I umount "/mnt" 0.417
Then I find very few patterns in the guest's memory after 3 seconds 5.715

Pattern coverage: 0.000% (0 MiB out of 1463 MiB reference memory)

After features/support/hooks.rb:339 0.801
After features/support/hooks.rb:108 0.000
36.372
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.001
Given I have started Tails from DVD without network and logged in 6.355
And I prepare Tails for memory erasure tests 0.345
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.369
Then I find very few patterns in the guest's memory 2.879

Pattern coverage: 0.000% (0 MiB out of 1481 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.315
Then patterns cover at least 75% of the test FS size in the guest's memory 3.105

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

When I umount the USB drive 0.681
Then I find very few patterns in the guest's memory after 3 seconds 5.606

Pattern coverage: 0.000% (0 MiB out of 1481 MiB reference memory)

# read cache
When I mount the USB drive again 0.251
And I read the content of the test FS 0.561
Then patterns cover at least 99% of the test FS size in the guest's memory 2.830

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

When I umount the USB drive 0.324
Then I find very few patterns in the guest's memory after 3 seconds 5.744

Pattern coverage: 0.000% (0 MiB out of 1481 MiB reference memory)

After features/support/hooks.rb:339 0.841
After features/support/hooks.rb:108 0.000
1:3.367
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 6.567
And I prepare Tails for memory erasure tests 0.317
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 30.939
Then I find very few patterns in the guest's memory 2.675

Pattern coverage: 0.000% (0 MiB out of 1460 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.261
Then patterns cover at least 99% of the test FS size in the guest's memory 2.703

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

When I umount the USB drive 0.481
Then I find very few patterns in the guest's memory after 3 seconds 5.520

Pattern coverage: 0.000% (0 MiB out of 1460 MiB reference memory)

# read cache
When I mount the USB drive again 3.979
And I read the content of the test FS 0.491
Then patterns cover at least 99% of the test FS size in the guest's memory 2.690

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

When I umount the USB drive 0.374
Then I find very few patterns in the guest's memory after 3 seconds 5.366

Pattern coverage: 0.000% (0 MiB out of 1460 MiB reference memory)

After features/support/hooks.rb:339 0.925
After features/support/hooks.rb:108 0.000
42.016
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 6.265
And I prepare Tails for memory erasure tests 0.278
When I fill a 128 MiB file with a known pattern on the root filesystem 11.293
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.361
Then patterns cover at least 128 MiB in the guest's memory 2.138

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

When I trigger shutdown 0.008
Then I find very few patterns in the guest's memory after 20 seconds 20.671

Pattern coverage: 0.000% (0 MiB out of 1473 MiB reference memory)

After features/support/hooks.rb:339 3.526
After features/support/hooks.rb:108 0.000
4:26.173
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 3:54.600
And I prepare Tails for memory erasure tests 0.303
When I fill a 128 MiB file with a known pattern on the persistent filesystem 9.985
When I trigger shutdown 0.008
Then I find very few patterns in the guest's memory after 20 seconds 21.275

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

After features/support/hooks.rb:339 3.508
After features/support/hooks.rb:108 0.009