Project Number Date
test_Tails_ISO_devel 3676 01 Feb 2025, 17:50

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 11:15.485 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.
24.012
Before features/support/hooks.rb:269 0.002
Given I have started Tails from DVD without network and logged in 8.173
And I prepare Tails for memory erasure tests 0.399
When I start a process allocating 128 MiB of memory with a known pattern 2.358
Then patterns cover at least 128 MiB in the guest's memory 3.270

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

When I kill the allocating process 1.943
Then I find very few patterns in the guest's memory after 5 seconds 7.867

Pattern coverage: 0.000% (0 MiB out of 875 MiB reference memory)

After features/support/hooks.rb:326 0.907
After features/support/hooks.rb:100 0.000
25.268
Before features/support/hooks.rb:269 0.002
Given I have started Tails from DVD without network and logged in 9.128
And I prepare Tails for memory erasure tests 0.419
And I find very few patterns in the guest's memory 2.676

Pattern coverage: 0.000% (0 MiB out of 910 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 2.348
Then patterns cover at least 99% of the test FS size in the guest's memory 3.520

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

When I umount "/mnt" 1.271
Then I find very few patterns in the guest's memory after 3 seconds 5.903

Pattern coverage: 0.000% (0 MiB out of 910 MiB reference memory)

After features/support/hooks.rb:326 0.810
After features/support/hooks.rb:100 0.000
45.910
Before features/support/hooks.rb:269 0.002
Given I have started Tails from DVD without network and logged in 7.872
And I prepare Tails for memory erasure tests 0.466
When I plug and mount a 128 MiB USB drive with a vfat filesystem 10.217
Then I find very few patterns in the guest's memory 2.776

Pattern coverage: 0.000% (0 MiB out of 888 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.938
Then patterns cover at least 75% of the test FS size in the guest's memory 3.076

Pattern coverage: 88.297% (112 MiB out of 127 MiB reference memory)

When I umount the USB drive 1.511
Then I find very few patterns in the guest's memory after 3 seconds 5.756

Pattern coverage: 0.000% (0 MiB out of 888 MiB reference memory)

# read cache
When I mount the USB drive again 0.267
And I read the content of the test FS 0.490
Then patterns cover at least 99% of the test FS size in the guest's memory 3.403

Pattern coverage: 100.596% (128 MiB out of 127 MiB reference memory)

When I umount the USB drive 0.643
Then I find very few patterns in the guest's memory after 3 seconds 6.487

Pattern coverage: 0.001% (0 MiB out of 888 MiB reference memory)

After features/support/hooks.rb:326 0.917
After features/support/hooks.rb:100 0.000
1:13.788
Before features/support/hooks.rb:269 0.002
Given I have started Tails from DVD without network and logged in 8.049
And I prepare Tails for memory erasure tests 0.440
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 36.848
Then I find very few patterns in the guest's memory 2.443

Pattern coverage: 0.000% (0 MiB out of 890 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.110
Then patterns cover at least 99% of the test FS size in the guest's memory 2.520

Pattern coverage: 106.113% (97 MiB out of 91 MiB reference memory)

When I umount the USB drive 1.456
Then I find very few patterns in the guest's memory after 3 seconds 5.028

Pattern coverage: 0.000% (0 MiB out of 890 MiB reference memory)

# read cache
When I mount the USB drive again 5.543
And I read the content of the test FS 0.467
Then patterns cover at least 99% of the test FS size in the guest's memory 2.678

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

When I umount the USB drive 0.903
Then I find very few patterns in the guest's memory after 3 seconds 5.298

Pattern coverage: 0.000% (0 MiB out of 890 MiB reference memory)

After features/support/hooks.rb:326 0.803
After features/support/hooks.rb:100 0.000
1:5.626
Before features/support/hooks.rb:269 0.003
Given I have started Tails from DVD without network and logged in 21.060
And I prepare Tails for memory erasure tests 0.396
When I fill a 128 MiB file with a known pattern on the root filesystem 18.293
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.948
Then patterns cover at least 128 MiB in the guest's memory 3.106

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

When I trigger shutdown 0.015
Then I find very few patterns in the guest's memory after 20 seconds 20.805

Pattern coverage: 0.000% (0 MiB out of 892 MiB reference memory)

After features/support/hooks.rb:326 3.487
After features/support/hooks.rb:100 0.000
7:20.878
Before features/support/hooks.rb:269 0.002
Given I have started Tails without network from a USB drive with a persistent partition enabled and logged in 6:35.761
And I prepare Tails for memory erasure tests 1.492
When I fill a 128 MiB file with a known pattern on the persistent filesystem 22.463
When I trigger shutdown 0.013
Then I find very few patterns in the guest's memory after 20 seconds 21.149

Pattern coverage: 0.000% (0 MiB out of 900 MiB reference memory)

After features/support/hooks.rb:326 3.520
After features/support/hooks.rb:100 0.012