Re: deadlock in crashed multithreaded job

From: Manfred Spraul (manfred@colorfullife.com)
Date: Mon Oct 01 2001 - 14:24:20 EST

Next message: David S. Miller: "Re: devinet.c 4.4BSD compatibility patch to ioctl SIOCGIF* for 2.4.10"
Previous message: Rik van Riel: "Re: VM: 2.4.10 vs. 2.4.10-ac2 and qsort()"
Maybe in reply to: Erich Focht: "deadlock in crashed multithreaded job"
Next in thread: Erich Focht: "Re: deadlock in crashed multithreaded job"
Reply: Erich Focht: "Re: deadlock in crashed multithreaded job"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

> The symptoms: running the tests (make check) sometimes ends up
> with hanging processes.

Does it _only_ hang during coredumping, or also during normal usage?

Could you remove
        down_read(&mmap_sem);
        binfmt->coredump();
        up_read(&mmap_sem);
from fs/exec.c and rerun your tests?

The hang during coredumping is known, there are 2 fixes [I have one, not
yet released, Andrea wrote one, IIRC included in his -aa kernels].

Up to 2.4.10 there was a second hang with /proc/*/stats, that one is
fixed in 2.4.10.

--
	Manfred
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Next message: David S. Miller: "Re: devinet.c 4.4BSD compatibility patch to ioctl SIOCGIF* for 2.4.10"
Previous message: Rik van Riel: "Re: VM: 2.4.10 vs. 2.4.10-ac2 and qsort()"
Maybe in reply to: Erich Focht: "deadlock in crashed multithreaded job"
Next in thread: Erich Focht: "Re: deadlock in crashed multithreaded job"
Reply: Erich Focht: "Re: deadlock in crashed multithreaded job"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

This archive was generated by hypermail 2b29 : Sun Oct 07 2001 - 21:00:16 EST