Project Number Date
test_Tails_ISO_21603-fragnesia 2 14 May 2026, 19:35

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 7:44.148 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.
17.163
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 6.522
And I prepare Tails for memory erasure tests 0.491
When I start a process allocating 128 MiB of memory with a known pattern 1.168
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 1.997

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

When I kill the allocating process 0.192
Then I find very few patterns in the guest's memory after 5 seconds 6.790

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

After features/support/hooks.rb:335 0.594
After features/support/hooks.rb:104 0.000
17.558
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 6.869
And I prepare Tails for memory erasure tests 0.373
And I find very few patterns in the guest's memory 1.652

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 1.972

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

When I umount "/mnt" 0.327
Then I find very few patterns in the guest's memory after 3 seconds 4.735

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

After features/support/hooks.rb:335 0.664
After features/support/hooks.rb:104 0.000
32.281
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 6.727
And I prepare Tails for memory erasure tests 0.383
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.033
Then I find very few patterns in the guest's memory 1.860

Pattern coverage: 0.000% (0 MiB out of 1472 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 2.512
Then patterns cover at least 75% of the test FS size in the guest's memory 2.744

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

When I umount the USB drive 0.783
Then I find very few patterns in the guest's memory after 3 seconds 4.767

Pattern coverage: 0.000% (0 MiB out of 1472 MiB reference memory)

# read cache
When I mount the USB drive again 0.137
And I read the content of the test FS 0.381
Then patterns cover at least 99% of the test FS size in the guest's memory 1.920

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

When I umount the USB drive 0.339
Then I find very few patterns in the guest's memory after 3 seconds 4.689

Pattern coverage: 0.000% (0 MiB out of 1472 MiB reference memory)

After features/support/hooks.rb:335 1.081
After features/support/hooks.rb:104 0.000
58.009
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 6.844
And I prepare Tails for memory erasure tests 0.365
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 28.835
Then I find very few patterns in the guest's memory 1.694

Pattern coverage: 0.000% (0 MiB out of 1472 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.347
Then patterns cover at least 99% of the test FS size in the guest's memory 2.128

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

When I umount the USB drive 0.514
Then I find very few patterns in the guest's memory after 3 seconds 4.749

Pattern coverage: 0.000% (0 MiB out of 1472 MiB reference memory)

# read cache
When I mount the USB drive again 3.959
And I read the content of the test FS 0.379
Then patterns cover at least 99% of the test FS size in the guest's memory 2.080

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

When I umount the USB drive 0.435
Then I find very few patterns in the guest's memory after 3 seconds 4.674

Pattern coverage: 0.000% (0 MiB out of 1472 MiB reference memory)

After features/support/hooks.rb:335 0.854
After features/support/hooks.rb:104 0.000
54.613
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 6.687
And I prepare Tails for memory erasure tests 0.474
When I fill a 128 MiB file with a known pattern on the root filesystem 23.065
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 2.100
Then patterns cover at least 128 MiB in the guest's memory 1.734

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

When I trigger shutdown 0.006
Then I find very few patterns in the guest's memory after 20 seconds 20.544

Pattern coverage: 0.000% (0 MiB out of 1487 MiB reference memory)

After features/support/hooks.rb:335 3.446
After features/support/hooks.rb:104 0.000
4:44.522
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 4:3.274
And I prepare Tails for memory erasure tests 0.387
When I fill a 128 MiB file with a known pattern on the persistent filesystem 19.912
When I trigger shutdown 0.006
Then I find very few patterns in the guest's memory after 20 seconds 20.942

Pattern coverage: 0.000% (0 MiB out of 1493 MiB reference memory)

After features/support/hooks.rb:335 3.800
After features/support/hooks.rb:104 0.011