Project Number Date
test_Tails_ISO_21773-wait-for-appstream-before-snapshot 3 29 Oct 2026, 02:15

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 7:22.184 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.
19.283
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 6.111
And I prepare Tails for memory erasure tests 0.265
When I start a process allocating 128 MiB of memory with a known pattern 2.213
# Since Debian Trixie we only get 99.610% coverage (tails#21012)
Then patterns cover at least 127 MiB in the guest's memory 2.893

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

When I kill the allocating process 0.210
Then I find very few patterns in the guest's memory after 5 seconds 7.588

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

After features/support/hooks.rb:339 0.880
After features/support/hooks.rb:108 0.000
20.096
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 6.185
And I prepare Tails for memory erasure tests 0.283
And I find very few patterns in the guest's memory 2.881

Pattern coverage: 0.000% (0 MiB out of 1406 MiB reference memory)

When I mount a 128 MiB tmpfs on "/mnt" and fill it with a known pattern 1.604
Then patterns cover at least 99% of the test FS size in the guest's memory 2.891

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

When I umount "/mnt" 0.378
Then I find very few patterns in the guest's memory after 3 seconds 5.871

Pattern coverage: 0.000% (0 MiB out of 1406 MiB reference memory)

After features/support/hooks.rb:339 0.634
After features/support/hooks.rb:108 0.000
36.527
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 6.266
And I prepare Tails for memory erasure tests 0.347
When I plug and mount a 128 MiB USB drive with a vfat filesystem 5.457
Then I find very few patterns in the guest's memory 2.645

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

# write cache
When I fill the USB drive with a known pattern 2.697
Then patterns cover at least 75% of the test FS size in the guest's memory 2.886

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

When I umount the USB drive 0.689
Then I find very few patterns in the guest's memory after 3 seconds 5.900

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

# read cache
When I mount the USB drive again 0.185
And I read the content of the test FS 0.571
Then patterns cover at least 99% of the test FS size in the guest's memory 2.888

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

When I umount the USB drive 0.425
Then I find very few patterns in the guest's memory after 3 seconds 5.565

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

After features/support/hooks.rb:339 0.686
After features/support/hooks.rb:108 0.000
1:3.466
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 6.210
And I prepare Tails for memory erasure tests 0.325
When I plug and mount a 128 MiB USB drive with an ext4 filesystem encrypted with password "asdf" 30.958
Then I find very few patterns in the guest's memory 2.600

Pattern coverage: 0.000% (0 MiB out of 1395 MiB reference memory)

# write cache
When I fill the USB drive with a known pattern 1.197
Then patterns cover at least 99% of the test FS size in the guest's memory 2.642

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

When I umount the USB drive 0.522
Then I find very few patterns in the guest's memory after 3 seconds 5.773

Pattern coverage: 0.000% (0 MiB out of 1395 MiB reference memory)

# read cache
When I mount the USB drive again 4.223
And I read the content of the test FS 0.360
Then patterns cover at least 99% of the test FS size in the guest's memory 2.745

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

When I umount the USB drive 0.443
Then I find very few patterns in the guest's memory after 3 seconds 5.462

Pattern coverage: 0.000% (0 MiB out of 1395 MiB reference memory)

After features/support/hooks.rb:339 0.755
After features/support/hooks.rb:108 0.000
44.514
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 6.312
And I prepare Tails for memory erasure tests 0.268
When I fill a 128 MiB file with a known pattern on the root filesystem 13.419
# ensure the pattern is in memory due to tmpfs, not to disk cache
And I drop all kernel caches 1.649
Then patterns cover at least 128 MiB in the guest's memory 2.159

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 20.701

Pattern coverage: 0.000% (0 MiB out of 1408 MiB reference memory)

After features/support/hooks.rb:339 3.506
After features/support/hooks.rb:108 0.000
4:18.295
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 3:46.511
And I prepare Tails for memory erasure tests 0.264
When I fill a 128 MiB file with a known pattern on the persistent filesystem 10.175
When I trigger shutdown 0.004
Then I find very few patterns in the guest's memory after 20 seconds 21.339

Pattern coverage: 0.000% (0 MiB out of 1396 MiB reference memory)

After features/support/hooks.rb:339 3.388
After features/support/hooks.rb:108 0.010