Project Number Date
test_Tails_ISO_21584-yelp-flatpak-sandbox-escape 1 18 May 2026, 18:03

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 7:6.551 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.
16.746
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 6.405
And I prepare Tails for memory erasure tests 0.361
When I start a process allocating 128 MiB of memory with a known pattern 1.125
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 2.032

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

When I kill the allocating process 0.191
Then I find very few patterns in the guest's memory after 5 seconds 6.630

Pattern coverage: 0.000% (0 MiB out of 1482 MiB reference memory)

After features/support/hooks.rb:335 0.975
After features/support/hooks.rb:104 0.000
17.158
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 6.493
And I prepare Tails for memory erasure tests 0.356
And I find very few patterns in the guest's memory 1.751

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

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.627
Then patterns cover at least 99% of the test FS size in the guest's memory 1.923

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

When I umount "/mnt" 0.307
Then I find very few patterns in the guest's memory after 3 seconds 4.699

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

After features/support/hooks.rb:335 0.576
After features/support/hooks.rb:104 0.000
31.650
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 6.463
And I prepare Tails for memory erasure tests 0.313
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.364
Then I find very few patterns in the guest's memory 1.709

Pattern coverage: 0.000% (0 MiB out of 1497 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.643
Then patterns cover at least 75% of the test FS size in the guest's memory 2.009

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

When I umount the USB drive 0.701
Then I find very few patterns in the guest's memory after 3 seconds 4.678

Pattern coverage: 0.000% (0 MiB out of 1497 MiB reference memory)

# read cache
When I mount the USB drive again 0.135
And I read the content of the test FS 0.488
Then patterns cover at least 99% of the test FS size in the guest's memory 2.060

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

When I umount the USB drive 0.351
Then I find very few patterns in the guest's memory after 3 seconds 4.730

Pattern coverage: 0.000% (0 MiB out of 1497 MiB reference memory)

After features/support/hooks.rb:335 0.715
After features/support/hooks.rb:104 0.000
54.257
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 6.490
And I prepare Tails for memory erasure tests 0.323
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 27.048
Then I find very few patterns in the guest's memory 1.673

Pattern coverage: 0.000% (0 MiB out of 1495 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.339
Then patterns cover at least 99% of the test FS size in the guest's memory 1.814

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

When I umount the USB drive 0.494
Then I find very few patterns in the guest's memory after 3 seconds 4.708

Pattern coverage: 0.000% (0 MiB out of 1495 MiB reference memory)

# read cache
When I mount the USB drive again 3.464
And I read the content of the test FS 0.255
Then patterns cover at least 99% of the test FS size in the guest's memory 1.728

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

When I umount the USB drive 0.362
Then I find very few patterns in the guest's memory after 3 seconds 4.554

Pattern coverage: 0.000% (0 MiB out of 1495 MiB reference memory)

After features/support/hooks.rb:335 0.990
After features/support/hooks.rb:104 0.000
51.666
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 6.582
And I prepare Tails for memory erasure tests 0.369
When I fill a 128 MiB file with a known pattern on the root filesystem 21.080
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.766
Then patterns cover at least 128 MiB in the guest's memory 1.412

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 20.450

Pattern coverage: 0.000% (0 MiB out of 1479 MiB reference memory)

After features/support/hooks.rb:335 3.369
After features/support/hooks.rb:104 0.000
4:15.071
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 3:37.167
And I prepare Tails for memory erasure tests 0.282
When I fill a 128 MiB file with a known pattern on the persistent filesystem 16.668
When I trigger shutdown 0.005
Then I find very few patterns in the guest's memory after 20 seconds 20.948

Pattern coverage: 0.000% (0 MiB out of 1505 MiB reference memory)

After features/support/hooks.rb:335 3.630
After features/support/hooks.rb:104 0.008