On 06/02, Oleg Nesterov wrote: > > On 06/02, Roland McGrath wrote: > > > > > when select_bad_process() finds the task P to kill it can participate > > > in the core dump (sleep in exit_mm), but we should somehow inform the > > > thread which actually dumps the core: P->mm->core_state->dumper. > > > > Perhaps it should simply do that: if you would choose P to oom-kill, and > > P->mm->core_state!=NULL, then choose P->mm->core_state->dumper instead. > > ... to set TIF_MEMDIE which should be checked in elf_core_dump(). > > Probably yes. Well, nothing can protect mm->core_state, the dumper owns it. Of course we can add the locking, but this is not nice. And again, perhaps MMF_OOMKILLED can be useful anyway. So, I think this would be the most quick/simple fix for now. Oleg. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>