Re: Kernel traces coming back with trash/clutter

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 4/24/07, John Anthony Kazos Jr. <[email protected]> wrote:
>
> I am getting this odd content in the trace log (dmesg), and I cannot
> figure out what it is or why it is there.
>
> <7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7>
> <7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7>
> <7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7>
> <7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7><7>
> <7><7><7><7><7>__bio_add_page: 2x ph 88>=128 || hw 88>=88 || 360448>max
> ffffffff802525d8 generic_make_request(bio 000001017c745300) 50729472, 704

"<7>" is KERN_DEBUG in <include/linux/kernel.h>, used with printk. Are you
using printk in the following forms?

printk(KERN_DEBUG "A debug message.\n");

Yes, exclusively.

Perhaps you have something looping that's outputting KERN_DEBUG with a
null message? Or one of your diagnostic printk statements includes
KERN_DEBUG with no actual message?

No, they are all KERN_DEBUG<space>"some string here", almost all with
some formatted output as well.  Could I be overloading the printk
output buffer, as in possibly too tightly repeated/looped code to be
able to output it all?

Remember, if you have a string in a variable without a KERN_*
prependation, you can do this.

printk(KERN_DEBUG "%s\n", debug_message);

Haven't tried that one - they're all of the form above.

Thanks again.

--
Mark Hull-Richter, Linux Kernel Engineer
DATAllegro (www.datallegro.com)
85 Enterprise, Second Floor, Aliso Viejo, CA  92656
949-680-3082 - Office     949-330-7691 - fax
[This message is NOT SPAM and is sent in strict accordance with
Google, Yahoo, AOL, Netscape and Earthlink Terms of Service.  If you
are NOT receiving this through a group and do not want any more emails
from me, please reply to me and let me know.  If you are receiving
this second-hand, this sender disclaims all responsibility for your
response.]
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux