Project Number Date
test_Tails_ISO_drop-cloudfront-workaround 1 30 Sep 2026, 15:10

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 8:44.101 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.
25.972
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 6.261
And I prepare Tails for memory erasure tests 0.310
When I start a process allocating 128 MiB of memory with a known pattern 2.211
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 6.507

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

When I kill the allocating process 0.776
Then I find very few patterns in the guest's memory after 5 seconds 9.905

Pattern coverage: 0.000% (0 MiB out of 1414 MiB reference memory)

After features/support/hooks.rb:339 0.808
After features/support/hooks.rb:108 0.000
36.073
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 6.726
And I prepare Tails for memory erasure tests 0.339
And I find very few patterns in the guest's memory 10.114

Pattern coverage: 0.000% (0 MiB out of 1415 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.577
Then patterns cover at least 99% of the test FS size in the guest's memory 9.094

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

When I umount "/mnt" 0.393
Then I find very few patterns in the guest's memory after 3 seconds 7.829

Pattern coverage: 0.000% (0 MiB out of 1415 MiB reference memory)

After features/support/hooks.rb:339 0.676
After features/support/hooks.rb:108 0.000
1:1.105
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 6.590
And I prepare Tails for memory erasure tests 0.477
When I plug and mount a 128 MiB USB drive with a vfat filesystem 7.555
Then I find very few patterns in the guest's memory 6.898

Pattern coverage: 0.000% (0 MiB out of 1405 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.912
Then patterns cover at least 75% of the test FS size in the guest's memory 9.950

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

When I umount the USB drive 0.675
Then I find very few patterns in the guest's memory after 3 seconds 11.318

Pattern coverage: 0.000% (0 MiB out of 1405 MiB reference memory)

# read cache
When I mount the USB drive again 0.219
And I read the content of the test FS 0.647
Then patterns cover at least 99% of the test FS size in the guest's memory 5.458

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

When I umount the USB drive 0.438
Then I find very few patterns in the guest's memory after 3 seconds 7.960

Pattern coverage: 0.000% (0 MiB out of 1405 MiB reference memory)

After features/support/hooks.rb:339 0.754
After features/support/hooks.rb:108 0.000
1:27.193
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 6.445
And I prepare Tails for memory erasure tests 0.316
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 40.320
Then I find very few patterns in the guest's memory 4.752

Pattern coverage: 0.000% (0 MiB out of 1405 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 4.400
Then patterns cover at least 99% of the test FS size in the guest's memory 4.860

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

When I umount the USB drive 0.507
Then I find very few patterns in the guest's memory after 3 seconds 10.455

Pattern coverage: 0.000% (0 MiB out of 1405 MiB reference memory)

# read cache
When I mount the USB drive again 3.449
And I read the content of the test FS 0.345
Then patterns cover at least 99% of the test FS size in the guest's memory 4.131

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

When I umount the USB drive 0.421
Then I find very few patterns in the guest's memory after 3 seconds 6.785

Pattern coverage: 0.000% (0 MiB out of 1405 MiB reference memory)

After features/support/hooks.rb:339 0.698
After features/support/hooks.rb:108 0.000
44.866
Before features/support/hooks.rb:274 0.000
Before features/support/hooks.rb:281 0.009
Given I have started Tails from DVD without network and logged in 6.499
And I prepare Tails for memory erasure tests 0.351
When I fill a 128 MiB file with a known pattern on the root filesystem 12.599
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.546
Then patterns cover at least 128 MiB in the guest's memory 2.988

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 20.876

Pattern coverage: 0.000% (0 MiB out of 1419 MiB reference memory)

After features/support/hooks.rb:339 3.849
After features/support/hooks.rb:108 0.000
4:28.889
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 3:56.819
And I prepare Tails for memory erasure tests 0.279
When I fill a 128 MiB file with a known pattern on the persistent filesystem 10.039
When I trigger shutdown 0.008
Then I find very few patterns in the guest's memory after 20 seconds 21.742

Pattern coverage: 0.000% (0 MiB out of 1451 MiB reference memory)

After features/support/hooks.rb:339 3.399
After features/support/hooks.rb:108 0.031