New: WARNING: at mm/page_alloc.c at ext4 root mount

http://bugzilla.kernel.org/show_bug.cgi?id=14843

Summary: WARNING: at mm/page_alloc.c at ext4 root mount
Product: Memory Management
Version: 2.5
Kernel Version: 2.6.33-rc1
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Page Allocator
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: Yes

Kernel 2.6.33-rc1 64bits with kmemcheck and other debug options Athlon64 3GHz single core
Acer Aspire 1511LMi
Bluewhite 64 13 (32 bits port of Slackware)

Since 2.6.33-rc1, I get the following warning at boot when the root ext4 filesystem is mounted:
kmemleak: Automatic memory scanning thread started
EXT3-fs (hda2): error: couldn't mount because of unsupported optional features
(240)
EXT2-fs (hda2): error: couldn't mount because of unsupported optional features
(240)

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WARNING: at mm/page_alloc.c:1220 get_page_from_freelist+0x6a4/0x6c0()