Project Number Date
test_Tails_ISO_21681-dont-create-tilde-directory-in-home 2 15 Jul 2026, 09:08

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 8:9.337 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.
18.773
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 7.214
And I prepare Tails for memory erasure tests 0.351
When I start a process allocating 128 MiB of memory with a known pattern 2.231
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 1.926

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

When I kill the allocating process 0.187
Then I find very few patterns in the guest's memory after 5 seconds 6.862

Pattern coverage: 0.000% (0 MiB out of 1467 MiB reference memory)

After features/support/hooks.rb:339 1.484
After features/support/hooks.rb:108 0.000
17.975
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 6.962
And I prepare Tails for memory erasure tests 0.351
And I find very few patterns in the guest's memory 1.781

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 1.676
Then patterns cover at least 99% of the test FS size in the guest's memory 1.929

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

When I umount "/mnt" 0.407
Then I find very few patterns in the guest's memory after 3 seconds 4.867

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

After features/support/hooks.rb:339 0.847
After features/support/hooks.rb:108 0.000
33.912
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.004
Given I have started Tails from DVD without network and logged in 7.186
And I prepare Tails for memory erasure tests 0.432
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.478
Then I find very few patterns in the guest's memory 1.746

Pattern coverage: 0.000% (0 MiB out of 1466 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.786
Then patterns cover at least 75% of the test FS size in the guest's memory 2.014

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

When I umount the USB drive 0.889
Then I find very few patterns in the guest's memory after 3 seconds 4.930

Pattern coverage: 0.000% (0 MiB out of 1466 MiB reference memory)

# read cache
When I mount the USB drive again 0.159
And I read the content of the test FS 0.481
Then patterns cover at least 99% of the test FS size in the guest's memory 2.425

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

When I umount the USB drive 0.562
Then I find very few patterns in the guest's memory after 3 seconds 4.819

Pattern coverage: 0.000% (0 MiB out of 1466 MiB reference memory)

After features/support/hooks.rb:339 0.841
After features/support/hooks.rb:108 0.000
1:1.173
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 6.878
And I prepare Tails for memory erasure tests 0.334
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 31.276
Then I find very few patterns in the guest's memory 1.621

Pattern coverage: 0.000% (0 MiB out of 1459 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.247
Then patterns cover at least 99% of the test FS size in the guest's memory 2.013

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

When I umount the USB drive 0.534
Then I find very few patterns in the guest's memory after 3 seconds 4.978

Pattern coverage: 0.000% (0 MiB out of 1459 MiB reference memory)

# read cache
When I mount the USB drive again 4.756
And I read the content of the test FS 0.381
Then patterns cover at least 99% of the test FS size in the guest's memory 2.020

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

When I umount the USB drive 0.427
Then I find very few patterns in the guest's memory after 3 seconds 4.701

Pattern coverage: 0.000% (0 MiB out of 1459 MiB reference memory)

After features/support/hooks.rb:339 0.625
After features/support/hooks.rb:108 0.000
1:3.627
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 6.854
And I prepare Tails for memory erasure tests 0.371
When I fill a 128 MiB file with a known pattern on the root filesystem 32.329
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.831
Then patterns cover at least 128 MiB in the guest's memory 1.543

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

When I trigger shutdown 0.005
Then I find very few patterns in the guest's memory after 20 seconds 20.692

Pattern coverage: 0.000% (0 MiB out of 1462 MiB reference memory)

After features/support/hooks.rb:339 3.526
After features/support/hooks.rb:108 0.000
4:53.875
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 4:6.823
And I prepare Tails for memory erasure tests 0.318
When I fill a 128 MiB file with a known pattern on the persistent filesystem 25.639
When I trigger shutdown 0.018
Then I find very few patterns in the guest's memory after 20 seconds 21.075

Pattern coverage: 0.000% (0 MiB out of 1474 MiB reference memory)

After features/support/hooks.rb:339 3.516
After features/support/hooks.rb:108 0.013