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Subject[GIT PULL] kmemcheck for mainline
Hi Linus,

Please consider pulling the kmemcheck tree;

kmemcheck is a feature which can (at run-time) detect some uses of
uninitialized memory within the kernel, similarly to what Valgrind's memcheck
does for userspace programs. We also have the ability to find use-after-free
errors and leaks of uninitialized data to userspace, both with a false-
positive rate of zero.

kmemcheck is self-contained in the sense that when CONFIG_KMEMCHECK=n, it has
no effect on the compiled kernel whatsoever. Our code has lived in the -tip
tree and been in -next for over a year, and has the acks of x86 and slab
maintainers (Ingo and Pekka). Inclusion in mainline would lower the threshold
for building and running kmemcheck-enabled kernels, which would also
hopefully increase testing coverage of the rest of the kernel code.


Vegard


The following changes since commit 8ebf975608aaebd7feb33d77f07ba21a6380e086:
Randy Dunlap (1):
block: fix kernel-doc in recent block/ changes

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/vegard/kmemcheck.git for-linus

Ingo Molnar (40):
Merge branch 'current' of git://git.kernel.org/.../vegard/kmemcheck into kmemcheck2
Merge branch 'linus' into kmemcheck2
Manual merge of tip/x86/irq into kmemcheck
Merge branch 'linus' into kmemcheck
Merge branch 'linus' into kmemcheck
Merge branch 'for-tip' of git://git.kernel.org/.../vegard/kmemcheck into kmemcheck
Merge branch 'linus' into kmemcheck
Merge branch 'linus' into kmemcheck
Merge branch 'linus' into kmemcheck
kmemcheck: export kmemcheck_mark_initialized
Merge branch 'linus' into kmemcheck
Merge branch 'linus' into kmemcheck
Merge commit 'v2.6.27-rc3' into kmemcheck
kmemcheck: build fix
Merge branch 'linus' into kmemcheck
Merge branches 'oprofile' and 'timers/hpet' into x86/core-v4
Merge branch 'linus' into kmemcheck-v2
Merge branch 'x86/core-v4' into kmemcheck-v2
Merge commit 'v2.6.28-rc2' into kmemcheck
Merge commit 'v2.6.28' into kmemcheck
Merge branch 'linus' into kmemcheck
Merge commit 'v2.6.29-rc2' into kmemcheck
Merge branch 'x86/mm' into kmemcheck
Merge branch 'x86/headers' into kmemcheck
Merge branch 'x86/headers' into kmemcheck
Merge branch 'x86/headers' into kmemcheck
Merge branch 'x86/headers' into kmemcheck
Merge branch 'for-ingo' of git://git.kernel.org/.../penberg/slab-2.6 into kmemcheck
Merge branch 'x86/core' into kmemcheck
Merge branch 'core/iommu' into kmemcheck
Merge branch 'for-tip' of git://git.kernel.org/.../vegard/kmemcheck into kmemcheck
Merge branch 'for-tip' of git://git.kernel.org/.../vegard/kmemcheck into kmemcheck
Merge branch 'x86/core' into kmemcheck
Merge branch 'for-tip' of git://git.kernel.org/.../vegard/kmemcheck into kmemcheck
Merge branch 'for-tip' of git://git.kernel.org/.../vegard/kmemcheck into kmemcheck
kmemcheck: fix split_page() of the page allocator, fix
Merge branch 'x86/mm-v2' into kmemcheck
Merge branch 'linus' into kmemcheck
Merge commit 'v2.6.30-rc5' into kmemcheck
Merge branch 'linus' into kmemcheck

Jeremy Fitzhardinge (2):
x86: make _PAGE_HIDDEN conditional
x86: unify pte_hidden

Pekka Enberg (13):
x86: __show_registers() and __show_regs() API unification
slab: move struct kmem_cache to headers
kmemcheck: add Vegard and Pekka to MAINTAINERS
x86: add hooks for kmemcheck on x86_64
slab: add hooks for kmemcheck
kmemcheck: Disable SLUB and SLAB debugging when kmemcheck is enabled
kmemcheck: remove forward declarations from error.c
kmemcheck: make initialization message less confusing
kmemcheck: remove multiple ifdef'd definitions of the same global variable
kmemcheck: move 64-bit ifdef out of kmemcheck_opcode_decode()
kmemcheck: missing whitespace in do_page_fault()
kmemcheck: use kmemcheck_pte_lookup() instead of open-coding it
kmemcheck: make kconfig accessible for other architectures

Randy Dunlap (1):
kmemcheck: include module.h to prevent warnings

Vegard Nossum (76):
x86: add save_stack_trace_bp() for tracing from a specific stack frame
stacktrace: add forward-declaration struct task_struct
tasklets: new tasklet scheduling function
kmemcheck: add the kmemcheck core
x86: add hooks for kmemcheck
kmemcheck: add mm functions
slub: add hooks for kmemcheck
kmemcheck: enable in the x86 Kconfig
kmemcheck: fix sparse warnings
softirq: raise the right softirq
kmemcheck: use the proper comment style
kmemcheck: fix use of uninitialized spinlock
kmemcheck: constrain tracking to non-debugged caches
kmemcheck: mark SMP support BROKEN
kmemcheck: use capital Y/N in kconfig help-texts
kmemcheck: remove unnecessary tests in the slab allocator
kmemcheck: add DMA hooks
kmemcheck: work with sizes in terms of bytes instead of bits
kmemcheck: allow memory accesses that cross page boundaries
kmemcheck: add some more documentation
kmemcheck: add some comments
kmemcheck: save memory contents on use of uninitialized memory
kmemcheck: implement REP MOVS/STOS emulation
kmemcheck: hide/show pages in each iteration of a REP instruction
kmemcheck: rip out the optimized memset()
kmemcheck: rip out SMP code
kmemcheck: hide/show pages in each iteration of a REP instruction #2
kmemcheck: lazy checking for MOVS instructions
Revert "kmemcheck: use set_memory_4k() instead of disabling PSE"
x86: use REP MOVS instruction for memcpy if kmemcheck is enabled
kmemcheck: use set_memory_4k() on x86_64 only
kmemcheck: fix crash in PnP BIOS calls
kmemcheck: tag warning printks
kmemcheck: (finally) use 4k pages for identity mapping
x86: fix mis-merge
kmemcheck: fix mis-merge in sysctl table
kmemcheck: update documentation
kmemcheck: update Kconfig help text
kmemcheck: document the shadow member of struct page
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
kmemcheck: fix CONFIG_KMEMCHECK=n build failure
kmemcheck: make ftrace and kmemcheck mutually exclusive
kmemcheck: fix an incorrect BUG_ON()
kmemcheck: fix shadow updates that cross page boundaries
crypto: don't track xor test pages with kmemcheck
x86: don't use MMX/SSE in xor routines if kmemcheck is compiled in
kmemcheck: reverse dependencies between DEBUG_PAGEALLOC and KMEMCHECK
kmemcheck: depend on DEBUG_KERNEL
c2port: annotate bitfield for kmemcheck
kmemcheck (bitfields): don't actually initialize the bitfield
net: annotate struct sock bitfield
kmemcheck: add opcode self-testing at boot
kmemcheck: decode sign/zero-extension move instructions correctly
kmemcheck: bitfields: introduce hack to work around gcc bug
trace: annotate bitfields in struct ring_buffer_event
kmemcheck: fix split_page() of the page allocator
kmemcheck: disable CPA self-test
x86: don't track page tables with kmemcheck
Revert "kmemcheck: disable CPA self-test"
kmemcheck: make bitfield annotations be valid C
fs: introduce __getname_gfp()
kmemcheck: add __GFP_NOTRACK_FALSE_POSITIVE flag
kmemcheck: fix do_mount_root() false positive
kmemcheck: fix __send_signal() false positive
kmemcheck: update documentation

Yinghai Lu (1):
x86: introduce bootmem_state

Documentation/kmemcheck.txt | 773 ++++++++++++++++++++++++++++++++++
MAINTAINERS | 8 +
arch/x86/Kconfig | 1 +
arch/x86/Kconfig.debug | 1 +
arch/x86/Makefile | 5 +
arch/x86/include/asm/dma-mapping.h | 8 +
arch/x86/include/asm/kmemcheck.h | 42 ++
arch/x86/include/asm/page_types.h | 8 +
arch/x86/include/asm/pgtable.h | 5 +
arch/x86/include/asm/pgtable_types.h | 9 +-
arch/x86/include/asm/string_32.h | 8 +
arch/x86/include/asm/string_64.h | 8 +
arch/x86/include/asm/thread_info.h | 4 +-
arch/x86/include/asm/xor.h | 5 +
arch/x86/kernel/cpu/intel.c | 23 +
arch/x86/kernel/process.c | 2 +-
arch/x86/kernel/setup.c | 1 +
arch/x86/kernel/stacktrace.c | 7 +
arch/x86/kernel/traps.c | 5 +
arch/x86/mm/Makefile | 2 +
arch/x86/mm/fault.c | 18 +-
arch/x86/mm/init.c | 15 +-
arch/x86/mm/init_32.c | 30 +-
arch/x86/mm/init_64.c | 37 +-
arch/x86/mm/kmemcheck/Makefile | 1 +
arch/x86/mm/kmemcheck/error.c | 228 ++++++++++
arch/x86/mm/kmemcheck/error.h | 15 +
arch/x86/mm/kmemcheck/kmemcheck.c | 637 ++++++++++++++++++++++++++++
arch/x86/mm/kmemcheck/opcode.c | 106 +++++
arch/x86/mm/kmemcheck/opcode.h | 9 +
arch/x86/mm/kmemcheck/pte.c | 22 +
arch/x86/mm/kmemcheck/pte.h | 10 +
arch/x86/mm/kmemcheck/selftest.c | 69 +++
arch/x86/mm/kmemcheck/selftest.h | 6 +
arch/x86/mm/kmemcheck/shadow.c | 162 +++++++
arch/x86/mm/kmemcheck/shadow.h | 16 +
arch/x86/mm/pageattr.c | 2 +-
arch/x86/mm/pgtable.c | 12 +-
crypto/xor.c | 7 +-
drivers/ieee1394/csr1212.c | 2 +
drivers/ieee1394/nodemgr.c | 5 +
drivers/misc/c2port/core.c | 2 +
include/linux/c2port.h | 3 +
include/linux/fs.h | 5 +-
include/linux/gfp.h | 14 +-
include/linux/interrupt.h | 14 +
include/linux/kmemcheck.h | 157 +++++++
include/linux/mm_types.h | 8 +
include/linux/ring_buffer.h | 4 +
include/linux/skbuff.h | 7 +
include/linux/slab.h | 7 +
include/linux/slab_def.h | 81 ++++
include/linux/stacktrace.h | 3 +
include/net/inet_sock.h | 14 +-
include/net/inet_timewait_sock.h | 5 +-
include/net/sock.h | 2 +
init/do_mounts.c | 3 +-
init/main.c | 4 +
kernel/fork.c | 14 +-
kernel/signal.c | 11 +-
kernel/softirq.c | 11 +
kernel/sysctl.c | 11 +
kernel/trace/ring_buffer.c | 3 +
lib/Kconfig.debug | 6 +-
lib/Kconfig.kmemcheck | 91 ++++
mm/Makefile | 1 +
mm/kmemcheck.c | 122 ++++++
mm/page_alloc.c | 18 +
mm/slab.c | 108 +----
mm/slub.c | 38 ++-
net/core/skbuff.c | 8 +
net/core/sock.c | 2 +
net/ipv4/inet_timewait_sock.c | 3 +
73 files changed, 2958 insertions(+), 156 deletions(-)
create mode 100644 Documentation/kmemcheck.txt
create mode 100644 arch/x86/include/asm/kmemcheck.h
create mode 100644 arch/x86/mm/kmemcheck/Makefile
create mode 100644 arch/x86/mm/kmemcheck/error.c
create mode 100644 arch/x86/mm/kmemcheck/error.h
create mode 100644 arch/x86/mm/kmemcheck/kmemcheck.c
create mode 100644 arch/x86/mm/kmemcheck/opcode.c
create mode 100644 arch/x86/mm/kmemcheck/opcode.h
create mode 100644 arch/x86/mm/kmemcheck/pte.c
create mode 100644 arch/x86/mm/kmemcheck/pte.h
create mode 100644 arch/x86/mm/kmemcheck/selftest.c
create mode 100644 arch/x86/mm/kmemcheck/selftest.h
create mode 100644 arch/x86/mm/kmemcheck/shadow.c
create mode 100644 arch/x86/mm/kmemcheck/shadow.h
create mode 100644 include/linux/kmemcheck.h
create mode 100644 lib/Kconfig.kmemcheck
create mode 100644 mm/kmemcheck.c


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