Messages in this thread | | | Date | Tue, 04 Jun 2002 03:39:03 -0700 (PDT) | Subject | Re: [2.5.20-BUG] 3c59x + highmem + acpi + nfs -> kernel panic | From | "David S. Miller" <> |
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From: Trond Myklebust <trond.myklebust@fys.uio.no> Date: Tue, 4 Jun 2002 13:39:32 +0200
>From what I can see, the only other place where KM_USER0 is employed would be in the *_highpage() helper routines in include/linux/highmem.h. These routines are used in various places, but are usually not protected against (soft and hard) interrupts or kernel pre-emption. Could it be that the latter is what is causing trouble?
Any sort of interrupt whatsoever would be enough to cause a problem here. It is enough of a condition to allow the sunrpc code to run.
This has nothing specific to do with preemption, although the fact that KM_USER0 usage does not block preemption is worrysome. - 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/
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