=== variant B (silent free) on PATCHED kernel #1 ===
[trigger] pre : f_bfree=483 f_blocks=492
[trigger] opened /mnt/df3175/targetB (fd=3), calling ftruncate(fd, 0)...
[trigger] ftruncate returned rc=0 errno=0 (success)
[trigger] post: f_bfree=483 (delta 0)
=== variant A (panic) on PATCHED kernel #1 ===
[trigger] pre : f_bfree=483 f_blocks=492
[trigger] opened /mnt/df3175/targetA (fd=3), calling ftruncate(fd, 0)...
[trigger] ftruncate returned rc=0 errno=0 (success)
[trigger] post: f_bfree=483 (delta 0)
STILL-ALIVE rc=0