Re: [GIT PULL] kmemcheck updates for -tip

From: Ingo Molnar
Date: Sun Feb 22 2009 - 11:44:40 EST



* Vegard Nossum <vegard.nossum@xxxxxxxxx> wrote:

> Hi,
>
> Here are the latest kmemcheck developments. Changes are basically:
>
> 1. Bitfield annotations.
> 2. Fix REP handling on P4s.
> 3. Page allocator hooks.
>
> At boot, I get two false positives, in copy_mount_options() and
> __dequeue_signal(). I've also seen two spontaneous floods of warnings from
> somewhere in aio code, but I couldn't pinpoint exactly why things went
> wrong. I guess it will need a bit more research.
>
>
> Vegard
>
>
> The following changes since commit 2215d76c949375d38b33f32580908accfffbb461:
> Ingo Molnar (1):
> Merge branch 'x86/core' into kmemcheck
>
> are available in the git repository at:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/vegard/kmemcheck.git for-tip
>
> Vegard Nossum (12):
> kmemcheck: bitfield API
> net: use kmemcheck bitfields API for skbuff
> net: annotate bitfields in struct inet_sock
> ieee1394: annotate bitfield
> ieee1394/csr1212: fix false positive kmemcheck report
> kmemcheck: annotate inet_timewait_sock bitfields
> kmemcheck: disable fast string operations on P4 CPUs
> kmemcheck: rip out REP instruction emulation
> kmemcheck: add hooks for page- and sg-dma-mappings
> kmemcheck: don't track allocated page tables
> kmemcheck: add hooks for the page allocator
> kmemcheck: depend on !SLUB_DEBUG_ON
>
> arch/x86/Kconfig.debug | 2 +-
> arch/x86/include/asm/dma-mapping.h | 6 ++
> arch/x86/include/asm/thread_info.h | 4 +-
> arch/x86/kernel/cpu/intel.c | 23 +++++++
> arch/x86/mm/kmemcheck/kmemcheck.c | 121 +-----------------------------------
> arch/x86/mm/kmemcheck/opcode.c | 13 +----
> arch/x86/mm/kmemcheck/opcode.h | 3 +-
> arch/x86/mm/kmemcheck/shadow.c | 8 +++
> arch/x86/mm/pgtable.c | 12 ++--
> drivers/ieee1394/csr1212.c | 2 +
> drivers/ieee1394/nodemgr.c | 7 ++-
> include/linux/gfp.h | 5 ++
> include/linux/kmemcheck.h | 72 ++++++++++++++++++++--
> include/linux/skbuff.h | 33 ++++++----
> include/net/inet_sock.h | 26 +++++---
> include/net/inet_timewait_sock.h | 11 ++-
> mm/kmemcheck.c | 45 ++++++++++----
> mm/page_alloc.c | 8 +++
> mm/slab.c | 15 +++--
> mm/slub.c | 23 +++++--
> net/core/skbuff.c | 8 +++
> net/ipv4/inet_timewait_sock.c | 3 +
> 22 files changed, 252 insertions(+), 198 deletions(-)

Pulled into tip:kmemcheck and started testing it, thanks Vegard!

Ingo
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