Project Number Date
test_Tails_ISO_21565-flatpak-safe 117 02 Nov 2026, 20:42

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 7:21.136 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.
19.725
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 6.247
And I prepare Tails for memory erasure tests 0.268
When I start a process allocating 128 MiB of memory with a known pattern 2.201
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 2.851

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

When I kill the allocating process 0.202
Then I find very few patterns in the guest's memory after 5 seconds 7.953

Pattern coverage: 0.000% (0 MiB out of 1399 MiB reference memory)

After features/support/hooks.rb:339 1.004
After features/support/hooks.rb:108 0.000
19.614
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 6.249
And I prepare Tails for memory erasure tests 0.247
And I find very few patterns in the guest's memory 2.686

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

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.440
Then patterns cover at least 99% of the test FS size in the guest's memory 2.986

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

When I umount "/mnt" 0.367
Then I find very few patterns in the guest's memory after 3 seconds 5.636

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

After features/support/hooks.rb:339 0.610
After features/support/hooks.rb:108 0.000
36.145
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 6.145
And I prepare Tails for memory erasure tests 0.234
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.256
Then I find very few patterns in the guest's memory 2.606

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

# write cache
When I fill the USB drive with a known pattern 2.590
Then patterns cover at least 75% of the test FS size in the guest's memory 3.037

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

When I umount the USB drive 0.744
Then I find very few patterns in the guest's memory after 3 seconds 5.724

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

# read cache
When I mount the USB drive again 0.182
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 2.849

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

When I umount the USB drive 0.404
Then I find very few patterns in the guest's memory after 3 seconds 5.792

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

After features/support/hooks.rb:339 0.656
After features/support/hooks.rb:108 0.000
1:2.087
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 6.207
And I prepare Tails for memory erasure tests 0.262
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 30.020
Then I find very few patterns in the guest's memory 2.584

Pattern coverage: 0.000% (0 MiB out of 1398 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.334
Then patterns cover at least 99% of the test FS size in the guest's memory 2.637

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

When I umount the USB drive 0.492
Then I find very few patterns in the guest's memory after 3 seconds 5.479

Pattern coverage: 0.000% (0 MiB out of 1398 MiB reference memory)

# read cache
When I mount the USB drive again 3.859
And I read the content of the test FS 0.334
Then patterns cover at least 99% of the test FS size in the guest's memory 2.974

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

When I umount the USB drive 0.436
Then I find very few patterns in the guest's memory after 3 seconds 5.463

Pattern coverage: 0.000% (0 MiB out of 1398 MiB reference memory)

After features/support/hooks.rb:339 0.650
After features/support/hooks.rb:108 0.000
43.914
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 6.116
And I prepare Tails for memory erasure tests 0.276
When I fill a 128 MiB file with a known pattern on the root filesystem 13.236
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.398
Then patterns cover at least 128 MiB in the guest's memory 2.180

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

When I trigger shutdown 0.004
Then I find very few patterns in the guest's memory after 20 seconds 20.700

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

After features/support/hooks.rb:339 3.665
After features/support/hooks.rb:108 0.000
4:19.649
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 3:48.695
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 9.631
When I trigger shutdown 0.004
Then I find very few patterns in the guest's memory after 20 seconds 21.000

Pattern coverage: 0.000% (0 MiB out of 1387 MiB reference memory)

After features/support/hooks.rb:339 3.519
After features/support/hooks.rb:108 0.009