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    SubjectRe: single bit flip detector.
    Dave Jones wrote:
    > On Tue, Aug 01, 2006 at 07:51:09PM -0400, Dave Jones wrote:
    > > I'm going for the record of 'most times a patch gets submitted in one day'.
    > > And to think we were complaining that patches don't get enough review ? :)
    > > If every change had this much polish, we'd be awesome.
    > Sigh. Spaces before printk. Whatever next.
    > I am now officially bored of seeing this patch.
    > Dave
    > In case where we detect a single bit has been flipped, we spew
    > the usual slab corruption message, which users instantly think
    > is a kernel bug. In a lot of cases, single bit errors are
    > down to bad memory, or other hardware failure.
    > This patch adds an extra line to the slab debug messages
    > in those cases, in the hope that users will try memtest before
    > they report a bug.
    > 000: 6b 6b 6b 6b 6a 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
    > Single bit error detected. Possibly bad RAM. Run memtest86.
    > Signed-off-by: Dave Jones <>
    > + if (errors && !(errors & (errors-1))) {
    > + printk(KERN_ERR "Single bit error detected. Probably bad RAM.\n");
    > +#ifdef CONFIG_X86

    #if defined(CONFIG_X86) || defined(CONFIG_X86_64)

    memtest86+ runs fine on x86_64 machines as well.

    > + printk(KERN_ERR "Run memtest86+ or a similar memory test tool.\n");
    > +#else
    > + printk(KERN_ERR "Run a memory test tool.\n");
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      Last update: 2006-08-02 17:27    [W:2.219 / U:0.252 seconds]
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