Project Number Date
test_Tails_ISO_stable-flatpak 45 13 Oct 2026, 20:18

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 7:52.181 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.
19.608
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 6.343
And I prepare Tails for memory erasure tests 0.275
When I start a process allocating 128 MiB of memory with a known pattern 2.186
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 2.862

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

When I kill the allocating process 0.203
Then I find very few patterns in the guest's memory after 5 seconds 7.736

Pattern coverage: 0.000% (0 MiB out of 1384 MiB reference memory)

After features/support/hooks.rb:339 0.603
After features/support/hooks.rb:108 0.000
24.556
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 6.414
And I prepare Tails for memory erasure tests 0.340
And I find very few patterns in the guest's memory 3.520

Pattern coverage: 0.000% (0 MiB out of 1394 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.549
Then patterns cover at least 99% of the test FS size in the guest's memory 5.442

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

When I umount "/mnt" 0.457
Then I find very few patterns in the guest's memory after 3 seconds 6.832

Pattern coverage: 0.000% (0 MiB out of 1394 MiB reference memory)

After features/support/hooks.rb:339 0.635
After features/support/hooks.rb:108 0.000
40.878
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 6.236
And I prepare Tails for memory erasure tests 0.301
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.660
Then I find very few patterns in the guest's memory 4.160

Pattern coverage: 0.000% (0 MiB out of 1396 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.749
Then patterns cover at least 75% of the test FS size in the guest's memory 3.761

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

When I umount the USB drive 0.673
Then I find very few patterns in the guest's memory after 3 seconds 6.423

Pattern coverage: 0.000% (0 MiB out of 1396 MiB reference memory)

# read cache
When I mount the USB drive again 0.221
And I read the content of the test FS 0.577
Then patterns cover at least 99% of the test FS size in the guest's memory 3.466

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

When I umount the USB drive 0.431
Then I find very few patterns in the guest's memory after 3 seconds 6.216

Pattern coverage: 0.000% (0 MiB out of 1396 MiB reference memory)

After features/support/hooks.rb:339 0.853
After features/support/hooks.rb:108 0.000
1:7.313
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 0.318
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 28.726
Then I find very few patterns in the guest's memory 3.143

Pattern coverage: 0.000% (0 MiB out of 1392 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.114
Then patterns cover at least 99% of the test FS size in the guest's memory 2.573

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

When I umount the USB drive 0.499
Then I find very few patterns in the guest's memory after 3 seconds 7.238

Pattern coverage: 0.000% (0 MiB out of 1392 MiB reference memory)

# read cache
When I mount the USB drive again 3.990
And I read the content of the test FS 0.374
Then patterns cover at least 99% of the test FS size in the guest's memory 4.648

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

When I umount the USB drive 0.453
Then I find very few patterns in the guest's memory after 3 seconds 7.965

Pattern coverage: 0.000% (0 MiB out of 1392 MiB reference memory)

After features/support/hooks.rb:339 0.971
After features/support/hooks.rb:108 0.000
44.665
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 6.292
And I prepare Tails for memory erasure tests 0.350
When I fill a 128 MiB file with a known pattern on the root filesystem 13.134
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.548
Then patterns cover at least 128 MiB in the guest's memory 2.537

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 20.797

Pattern coverage: 0.000% (0 MiB out of 1395 MiB reference memory)

After features/support/hooks.rb:339 3.337
After features/support/hooks.rb:108 0.000
4:35.159
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 4:4.492
And I prepare Tails for memory erasure tests 0.241
When I fill a 128 MiB file with a known pattern on the persistent filesystem 9.178
When I trigger shutdown 0.005
Then I find very few patterns in the guest's memory after 20 seconds 21.242

Pattern coverage: 0.000% (0 MiB out of 1409 MiB reference memory)

After features/support/hooks.rb:339 3.509
After features/support/hooks.rb:108 0.011