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Date: Tue, 4 Dec 2007 22:04:30 +0100 From: Ingo Molnar <mingo@...e.hu> To: "Luiz Fernando N. Capitulino" <lcapitulino@...driva.com.br> Cc: Greg KH <greg@...ah.com>, Linus Torvalds <torvalds@...ux-foundation.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, herton@...driva.com.br, dvgevers@...all.nl Subject: Re: [git pull] scheduler fixes * Luiz Fernando N. Capitulino <lcapitulino@...driva.com.br> wrote: > | > git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched.git > | > > | > It has another commit besides this fix. Thanks, > | > | Can you make up something that I can apply for 2.6.23-stable? or is > | this not an issue on that tree? > > FWIW I couldn't reproduce the problem with 2.6.23.9. sched_slice() is > quite different on that kernel and _maybe_ it won't never divide by > zero. no, this is due to a fairly recent commit, so 2.6.23 should not be affected. (We cleaned up sched_rr_interval() in one of the 2.6.24 scheduler commits.) > My original report on vendor-sec was wrong. I've said that 2.6.23.9 > had the same bug but turns out the kernel I tested had the Ingo's CFS > backport patch applied. I didn't know that, I thought it was a vanilla > kernel. > > Btw, I think it's important to release a new CFS backport patch > because maybe some distro is using it (Mandriva stable kernel is using > the CFS backport patch, but we didn't update to latest version yet). this should only affect the v24 CFS version - i've updated the v24 backport patches. sched_rr_interval() is almost never used, and it's basically never used for SCHED_OTHER tasks. Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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