Re: BUG kmalloc-4096: Poison overwritten

[Justin P. Mattock]

On 06/05/2010 11:27 PM, Jiri Slaby wrote:
> On 06/06/2010 08:12 AM, Justin P. Mattock wrote:
> > =============================================================================
> >
> > [    0.002046] BUG kmalloc-4096: Poison overwritten
> > [    0.002051]
> > -----------------------------------------------------------------------------
> >
> > [    0.002052]
> > [    0.002063] INFO: 0xffff88003ec09e00-0xffff88003ec09e9f. First byte
> > 0x20 instead of 0x6b
> > [    0.002073] INFO: Slab 0xffffea0000dba1c0 objects=7 used=1
> > fp=0xffff88003ec09048 flags=0x40000000000040c3
> > [    0.002082] INFO: Object 0xffff88003ec09048 @offset=4168
> > fp=0xffff88003ec0a090
> > [    0.002083]
> > [    0.002093] Bytes b4 0xffff88003ec09038:  00 00 00 00 00 00 00 00 5a
> > 5a 5a 5a 5a 5a 5a 5a ........ZZZZZZZZ
> > [    0.002114]   Object 0xffff88003ec09048:  6b 6b 6b 6b 6b 6b 6b 6b 6b
> > 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
> ...
> > 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
> > [    0.002999]   Object 0xffff88003ec09df8:  6b 6b 6b 6b 6b 6b 6b 6b 20
> > 07 20 07 20 07 20 07 kkkkkkkk........
> > [    0.002999]   Object 0xffff88003ec09e08:  20 07 20 07 20 07 20 07 20
> > 07 20 07 20 07 20 07 ................
> > [    0.002999]   Object 0xffff88003ec09e18:  20 07 20 07 20 07 20 07 20
> > 07 20 07 20 07 20 07 ................
> > [    0.002999]   Object 0xffff88003ec09e28:  20 07 20 07 20 07 20 07 20
> > 07 20 07 20 07 20 07 ................
> > [    0.002999]   Object 0xffff88003ec09e38:  20 07 20 07 20 07 20 07 20
> > 07 20 07 20 07 20 07 ................
> > [    0.002999]   Object 0xffff88003ec09e48:  20 07 20 07 20 07 20 07 20
> > 07 20 07 20 07 20 07 ................
> > [    0.002999]   Object 0xffff88003ec09e58:  20 07 20 07 20 07 20 07 20
> > 07 20 07 20 07 20 07 ................
> > [    0.002999]   Object 0xffff88003ec09e68:  20 07 20 07 20 07 20 07 20
> > 07 20 07 20 07 20 07 ................
> > [    0.002999]   Object 0xffff88003ec09e78:  20 07 20 07 20 07 20 07 20
> > 07 20 07 20 07 20 07 ................
> > [    0.002999]   Object 0xffff88003ec09e88:  20 07 20 07 20 07 20 07 20
> > 07 20 07 20 07 20 07 ................
> > [    0.002999]   Object 0xffff88003ec09e98:  20 07 20 07 20 07 20 07 6b
> > 6b 6b 6b 6b 6b 6b 6b ........kkkkkkkk
> > [    0.002999]   Object 0xffff88003ec09ea8:  6b 6b 6b 6b 6b 6b 6b 6b 6b
>
> Just guessing, grey spaces which should go to video ram?

not sure if it's grey spaces etc.. one thing I know is this seem's 
reproducible i.g. rebooted 3/4 time's and every boot this showed
up.. I will do a bisect..(keep in mind it's late right now,
and am a bit sauced..will do in the morning)

Justin P. Mattock
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