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Date: Tue, 23 Dec 2008 17:25:13 +0800
From: Eugene Teo <>
CC: "Steven M. Christey" <>
Subject: CVE request: kernel: soft lockup occurs when network load is very

Steve, can you please assign a CVE name for the following issue:

"[NET]: Add preemption point in qdisc_run

The qdisc_run loop is currently unbounded and runs entirely in a
softirq.  This is bad as it may create an unbounded softirq run.

This patch fixes this by calling need_resched and breaking out if

It also adds a break out if the jiffies value changes since that would
indicate we've been transmitting for too long which starves other

Problem is fixed upstream since 2ba2506ca7ca62c56edaa334b0fe61eb5eab6ab0



This can be triggered by an unprivileged user.

Thanks, Eugene

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