Project Number Date
test_Tails_ISO_stable 4793 17 Apr 2024, 19:05

Feature Report

Steps Scenarios Features
Feature Passed Failed Skipped Pending Undefined Total Passed Failed Total Duration Status
System memory erasure on shutdown 53 0 0 0 0 53 6 0 6 10:21.675 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.
19.892
Before features/support/hooks.rb:259 0.002
Given I have started Tails from DVD without network and logged in 8.819
And I prepare Tails for memory erasure tests 0.534
When I start a process allocating 128 MiB of memory with a known pattern 1.228
Then patterns cover at least 128 MiB in the guest's memory 3.497

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

When I kill the allocating process 0.236
Then I find very few patterns in the guest's memory 5.575

Pattern coverage: 0.000% (0 MiB out of 895 MiB reference memory)

After features/support/hooks.rb:305 1.973
After features/support/hooks.rb:89 0.000
21.941
Before features/support/hooks.rb:259 0.002
Given I have started Tails from DVD without network and logged in 8.312
And I prepare Tails for memory erasure tests 0.661
And I find very few patterns in the guest's memory 3.913

Pattern coverage: 0.000% (0 MiB out of 896 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.798
Then patterns cover at least 99% of the test FS size in the guest's memory 3.110

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

When I umount "/mnt" 0.392
Then I find very few patterns in the guest's memory 3.751

Pattern coverage: 0.000% (0 MiB out of 896 MiB reference memory)

After features/support/hooks.rb:305 1.631
After features/support/hooks.rb:89 0.000
51.221
Before features/support/hooks.rb:259 0.002
Given I have started Tails from DVD without network and logged in 8.097
And I prepare Tails for memory erasure tests 0.496
When I plug and mount a 128 MiB USB drive with a vfat filesystem 8.973
Then I find very few patterns in the guest's memory 4.258

Pattern coverage: 0.000% (0 MiB out of 914 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 5.265
Then patterns cover at least 86% of the test FS size in the guest's memory 3.339

Pattern coverage: 96.434% (123 MiB out of 127 MiB reference memory)

When I umount the USB drive 6.489
Then I find very few patterns in the guest's memory 4.793

Pattern coverage: 0.000% (0 MiB out of 914 MiB reference memory)

# read cache
When I mount the USB drive again 0.188
And I read the content of the test FS 0.420
Then patterns cover at least 99% of the test FS size in the guest's memory 4.090

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

When I umount the USB drive 0.456
Then I find very few patterns in the guest's memory 4.350

Pattern coverage: 0.000% (0 MiB out of 914 MiB reference memory)

After features/support/hooks.rb:305 1.353
After features/support/hooks.rb:89 0.000
1:19.132
Before features/support/hooks.rb:259 0.002
Given I have started Tails from DVD without network and logged in 8.115
And I prepare Tails for memory erasure tests 0.703
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 28.749
Then I find very few patterns in the guest's memory 4.420

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

# write cache
When I fill the USB drive with a known pattern 3.732
Then patterns cover at least 99% of the test FS size in the guest's memory 3.870

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

When I umount the USB drive 0.781
Then I find very few patterns in the guest's memory 3.826

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

# read cache
When I mount the USB drive again 16.858
And I read the content of the test FS 0.431
Then patterns cover at least 99% of the test FS size in the guest's memory 3.343

Pattern coverage: 106.116% (97 MiB out of 91 MiB reference memory)

When I umount the USB drive 0.599
Then I find very few patterns in the guest's memory 3.700

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

After features/support/hooks.rb:305 0.718
After features/support/hooks.rb:89 0.000
48.131
Before features/support/hooks.rb:259 0.003
Given I have started Tails from DVD without network and logged in 9.100
And I prepare Tails for memory erasure tests 0.528
When I fill a 128 MiB file with a known pattern on the root filesystem 11.826
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.555
Then patterns cover at least 128 MiB in the guest's memory 3.300

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

When I trigger shutdown 0.013
And I wait 20 seconds 20.020

Slept for 20 seconds

Then I find very few patterns in the guest's memory 1.787

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

After features/support/hooks.rb:305 3.501
After features/support/hooks.rb:89 0.000
6:41.356
Before features/support/hooks.rb:259 0.002
Given I have started Tails without network from a USB drive with a persistent partition enabled and logged in 5:56.212
And I prepare Tails for memory erasure tests 0.409
When I fill a 128 MiB file with a known pattern on the persistent filesystem 22.371
When I trigger shutdown 0.009
And I wait 20 seconds 20.016

Slept for 20 seconds

Then I find very few patterns in the guest's memory 2.336

Pattern coverage: 0.000% (0 MiB out of 916 MiB reference memory)

After features/support/hooks.rb:305 3.519
After features/support/hooks.rb:89 0.012