Re: BUG kmalloc-4096: Poison overwritten

From: Jiri Slaby
Date: Sun Jun 06 2010 - 02:28:01 EST


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?

--
js
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/