Project Number Date
test_Tails_ISO_21771-test-reliable-celluloid-open 4 08 Sep 2026, 03:43

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 7:11.164 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.
19.464
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 6.238
And I prepare Tails for memory erasure tests 0.281
When I start a process allocating 128 MiB of memory with a known pattern 2.305
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 2.812

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

When I kill the allocating process 0.200
Then I find very few patterns in the guest's memory after 5 seconds 7.625

Pattern coverage: 0.000% (0 MiB out of 1401 MiB reference memory)

After features/support/hooks.rb:339 0.721
After features/support/hooks.rb:108 0.000
19.354
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 6.217
And I prepare Tails for memory erasure tests 0.293
And I find very few patterns in the guest's memory 2.624

Pattern coverage: 0.000% (0 MiB out of 1410 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.325
Then patterns cover at least 99% of the test FS size in the guest's memory 2.825

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

When I umount "/mnt" 0.342
Then I find very few patterns in the guest's memory after 3 seconds 5.726

Pattern coverage: 0.000% (0 MiB out of 1410 MiB reference memory)

After features/support/hooks.rb:339 0.803
After features/support/hooks.rb:108 0.000
36.349
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 6.251
And I prepare Tails for memory erasure tests 0.284
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.078
Then I find very few patterns in the guest's memory 2.693

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

# write cache
When I fill the USB drive with a known pattern 2.566
Then patterns cover at least 75% of the test FS size in the guest's memory 3.254

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

When I umount the USB drive 0.691
Then I find very few patterns in the guest's memory after 3 seconds 5.742

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

# read cache
When I mount the USB drive again 0.195
And I read the content of the test FS 0.551
Then patterns cover at least 99% of the test FS size in the guest's memory 3.021

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

When I umount the USB drive 0.379
Then I find very few patterns in the guest's memory after 3 seconds 5.636

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

After features/support/hooks.rb:339 0.854
After features/support/hooks.rb:108 0.000
59.353
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 6.230
And I prepare Tails for memory erasure tests 0.327
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 27.505
Then I find very few patterns in the guest's memory 2.612

Pattern coverage: 0.000% (0 MiB out of 1404 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.046
Then patterns cover at least 99% of the test FS size in the guest's memory 2.855

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

When I umount the USB drive 0.456
Then I find very few patterns in the guest's memory after 3 seconds 5.598

Pattern coverage: 0.000% (0 MiB out of 1404 MiB reference memory)

# read cache
When I mount the USB drive again 3.854
And I read the content of the test FS 0.337
Then patterns cover at least 99% of the test FS size in the guest's memory 2.593

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

When I umount the USB drive 0.394
Then I find very few patterns in the guest's memory after 3 seconds 5.541

Pattern coverage: 0.000% (0 MiB out of 1404 MiB reference memory)

After features/support/hooks.rb:339 0.842
After features/support/hooks.rb:108 0.000
44.100
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 6.252
And I prepare Tails for memory erasure tests 0.300
When I fill a 128 MiB file with a known pattern on the root filesystem 12.985
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.365
Then patterns cover at least 128 MiB in the guest's memory 2.213

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 20.978

Pattern coverage: 0.000% (0 MiB out of 1402 MiB reference memory)

After features/support/hooks.rb:339 3.477
After features/support/hooks.rb:108 0.000
4:12.542
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 3:41.479
And I prepare Tails for memory erasure tests 0.272
When I fill a 128 MiB file with a known pattern on the persistent filesystem 9.487
When I trigger shutdown 0.004
Then I find very few patterns in the guest's memory after 20 seconds 21.298

Pattern coverage: 0.000% (0 MiB out of 1456 MiB reference memory)

After features/support/hooks.rb:339 3.647
After features/support/hooks.rb:108 0.009