With external disk attached when upgraded to 4.19 e4defrag commands kills the system: [ 1192.086591] e4defrag invoked oom-killer: gfp_mask=0x6000d0(GFP_KERNEL|__GFP_RECLAIMABLE), nodemask=(null), order=0, oom_score_adj=0 [ 1192.086604] e4defrag cpuset=/ mems_allowed=0 [ 1192.086630] CPU: 2 PID: 214...