On 02/14, Mandeep Singh Baines wrote: > > This patch makes wait_for_dump_helpers() not to abort piping the core > dump data when the crashing process has received any but a fatal signal > (SIGKILL). The rationale is that a crashing process may still receive > uninteresting signals such as SIGCHLD when its core dump data is being > redirected to a helper application.
You already sent this change in the past ;) and I already reviewed it. It is not enough and imho not good. Damn, I'll try very much to make the patches on weekend... > - while ((pipe->readers > 1) && (!signal_pending(current))) { > + while ((pipe->readers > 1) && (!fatal_signal_pending(current))) { This turns pipe_wait() belowe into the busy-wait loop if signal_pending(). Not good. And not enough, there are other reasons why coredump can fail if the signal is pending. > wake_up_interruptible_sync(&pipe->wait); > kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN); > pipe_wait(pipe); > + pipe_unlock(pipe); > + try_to_freeze(); Oh, yes. One of the problems with coredump/signals is freezer. Not sure what should we do... But if we add try_to_freeze() here, we need to add more try_to_freeze's, think about dumping the huge core on the slow media. Oleg. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/