Vegard Nossum
2dff440525
kmemcheck: add mm functions
...
With kmemcheck enabled, the slab allocator needs to do this:
1. Tell kmemcheck to allocate the shadow memory which stores the status of
each byte in the allocation proper, e.g. whether it is initialized or
uninitialized.
2. Tell kmemcheck which parts of memory that should be marked uninitialized.
There are actually a few more states, such as "not yet allocated" and
"recently freed".
If a slab cache is set up using the SLAB_NOTRACK flag, it will never return
memory that can take page faults because of kmemcheck.
If a slab cache is NOT set up using the SLAB_NOTRACK flag, callers can still
request memory with the __GFP_NOTRACK flag. This does not prevent the page
faults from occuring, however, but marks the object in question as being
initialized so that no warnings will ever be produced for this object.
In addition to (and in contrast to) __GFP_NOTRACK, the
__GFP_NOTRACK_FALSE_POSITIVE flag indicates that the allocation should
not be tracked _because_ it would produce a false positive. Their values
are identical, but need not be so in the future (for example, we could now
enable/disable false positives with a config option).
Parts of this patch were contributed by Pekka Enberg but merged for
atomicity.
Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
[rebased for mainline inclusion]
Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
2009-06-15 12:40:03 +02:00
..
irq
irq: use kcalloc() instead of the bootmem allocator
2009-06-11 19:27:13 +03:00
power
PM: Do not hold dpm_list_mtx while disabling/enabling nonboot CPUs
2009-05-24 21:15:07 +02:00
time
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
2009-06-11 09:01:14 +03:00
trace
Merge branch 'for-2.6.31' of git://git.kernel.dk/linux-2.6-block
2009-06-11 11:10:35 -07:00
.gitignore
acct.c
async.c
async: Fix lack of boot-time console due to insufficient synchronization
2009-06-08 12:31:53 -07:00
audit.c
Audit: remove spaces from audit_log_d_path
2009-04-05 13:49:04 -04:00
audit.h
audit_tree.c
Switch collect_mounts() to struct path
2009-06-11 21:36:01 -04:00
auditfilter.c
inotify: use GFP_NOFS in kernel_event() to work around a lockdep false-positive
2009-05-06 16:36:09 -07:00
auditsc.c
Audit: remove spaces from audit_log_d_path
2009-04-05 13:49:04 -04:00
backtracetest.c
bounds.c
capability.c
cgroup.c
Push BKL down into ->remount_fs()
2009-06-11 21:36:11 -04:00
cgroup_debug.c
debug cgroup: remove unneeded cgroup_lock
2009-04-02 19:04:54 -07:00
cgroup_freezer.c
compat.c
signals: implement sys_rt_tgsigqueueinfo
2009-04-30 19:24:24 +02:00
configs.c
cpu.c
cpumask: use set_cpu_active in init/main.c
2009-03-30 22:05:12 +10:30
cpuset.c
x86: remove some alloc_bootmem_cpumask_var calling
2009-06-11 19:27:07 +03:00
cred-internals.h
cred.c
CRED: Rename cred_exec_mutex to reflect that it's a guard against ptrace
2009-05-11 08:15:36 +10:00
delayacct.c
dma-coherent.c
dma.c
exec_domain.c
Get rid of indirect include of fs_struct.h
2009-03-31 23:00:27 -04:00
exit.c
Merge branch 'perfcounters-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-06-11 14:01:07 -07:00
extable.c
Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-04-05 11:04:19 -07:00
fork.c
kmemcheck: add mm functions
2009-06-15 12:40:03 +02:00
freezer.c
futex.c
futex: fix restart in wait_requeue_pi
2009-05-20 10:34:32 +02:00
futex_compat.c
hrtimer.c
hrtimer: fix rq->lock inversion (again)
2009-03-31 14:52:52 +02:00
hung_task.c
itimer.c
kallsyms.c
Ksplice: Add functions for walking kallsyms symbols
2009-03-31 13:05:32 +10:30
Kconfig.freezer
Kconfig.hz
Kconfig.preempt
kexec.c
PM: Do not hold dpm_list_mtx while disabling/enabling nonboot CPUs
2009-05-24 21:15:07 +02:00
kfifo.c
kgdb.c
sysrq, intel_fb: fix sysrq g collision
2009-05-15 07:56:24 -05:00
kmod.c
kmod: Release sub_info on cred allocation failure.
2009-05-26 12:11:19 -07:00
kprobes.c
kprobes: fix to use text_mutex around arm/disarm kprobe
2009-05-08 16:23:48 -07:00
ksysfs.c
kthread.c
tracing/events: move trace point headers into include/trace/events
2009-04-14 22:05:43 -04:00
latencytop.c
lockdep.c
Merge branch 'linus' into tracing/core
2009-05-07 11:17:34 +02:00
lockdep_internals.h
lockdep: increase MAX_LOCKDEP_ENTRIES and MAX_LOCKDEP_CHAINS
2009-05-12 19:59:52 +02:00
lockdep_proc.c
lockstat: warn about disabled lock debugging
2009-02-14 23:28:28 +01:00
lockdep_states.h
lockdep: move state bit definitions around
2009-02-14 23:27:59 +01:00
Makefile
Merge branch 'linus' into perfcounters/core
2009-06-11 17:55:42 +02:00
marker.c
module.c
Merge branch 'for-linus' of git://linux-arm.org/linux-2.6
2009-06-11 14:15:57 -07:00
mutex-debug.c
mutex-debug.h
mutex.c
Merge branch 'linus' into perfcounters/core
2009-06-11 17:55:42 +02:00
mutex.h
notifier.c
ns_cgroup.c
cgroups: relax ns_can_attach checks to allow attaching to grandchild cgroups
2009-04-02 19:04:53 -07:00
nsproxy.c
panic.c
Fix caller information for warn_slowpath_null
2009-05-16 13:41:28 -07:00
params.c
param: fix charp parameters set via sysfs
2009-03-31 13:05:30 +10:30
perf_counter.c
perf_counter: Add counter->id to the throttle event
2009-06-11 17:54:45 +02:00
pid.c
pids: refactor vnr/nr_ns helpers to make them safe
2009-04-02 19:05:02 -07:00
pid_namespace.c
signals: zap_pid_ns_process() should use force_sig()
2009-04-02 19:04:58 -07:00
pm_qos_params.c
posix-cpu-timers.c
kernel/posix-cpu-timers.c: fix sparse warning
2009-04-30 08:08:31 +02:00
posix-timers.c
printk.c
Merge branch 'printk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-04-05 10:23:25 -07:00
profile.c
x86: remove some alloc_bootmem_cpumask_var calling
2009-06-11 19:27:07 +03:00
ptrace.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
2009-06-11 10:01:41 -07:00
rcuclassic.c
kmemtrace, rcu: fix linux/rcutree.h and linux/rcuclassic.h dependencies
2009-04-03 12:23:02 +02:00
rcupdate.c
RCU: Don't try and predeclare inline funcs as it upsets some versions of gcc
2009-04-15 13:55:14 -07:00
rcupreempt.c
rcu: rcu_sched_grace_period(): kill the bogus flush_signals()
2009-05-05 20:28:05 +02:00
rcupreempt_trace.c
rcutorture.c
cpumask: convert rcutorture.c
2009-03-30 22:05:16 +10:30
rcutree.c
rcu: Add __rcu_pending tracing to hierarchical RCU
2009-04-14 11:33:43 +02:00
rcutree.h
kmemtrace, rcu: fix rcu_tree_trace.c data structure dependencies
2009-04-03 12:23:03 +02:00
rcutree_trace.c
rcu: Add __rcu_pending tracing to hierarchical RCU
2009-04-14 11:33:43 +02:00
relay.c
Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-04-05 11:04:19 -07:00
res_counter.c
resource.c
Remove 'recurse into child resources' logic from 'reserve_region_with_split()'
2009-04-18 21:44:24 -07:00
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
Merge branch 'locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-06-10 16:19:40 -07:00
rtmutex.h
rtmutex_common.h
rt_mutex: add proxy lock routines
2009-04-06 11:14:02 +02:00
rwsem.c
sched.c
Merge branch 'perfcounters-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-06-11 14:01:07 -07:00
sched_clock.c
sched: Fix fallback sched_clock()'s offset when using jiffies
2009-05-09 10:08:19 +02:00
sched_cpupri.c
sched: use slab in cpupri_init()
2009-06-11 19:27:12 +03:00
sched_cpupri.h
cpumask: remove cpumask_t from core
2009-03-30 22:05:17 +10:30
sched_debug.c
sched: remove unused fields from struct rq
2009-03-24 23:16:51 +01:00
sched_fair.c
sched: remove redundant hierarchy walk in check_preempt_wakeup
2009-04-09 08:19:08 +02:00
sched_features.h
Merge branch 'locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-03-30 17:17:35 -07:00
sched_idletask.c
sched, timers: move calc_load() to scheduler
2009-05-15 15:32:45 +02:00
sched_rt.c
cpumask: alloc zeroed cpumask for static cpumask_var_ts
2009-06-09 22:30:27 +09:30
sched_stats.h
sched: remove unused fields from struct rq
2009-03-24 23:16:51 +01:00
seccomp.c
x86-64: seccomp: fix 32/64 syscall hole
2009-03-02 15:41:30 -08:00
semaphore.c
signal.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
2009-06-11 10:01:41 -07:00
slow-work.c
slow_work_thread() should do the exclusive wait
2009-06-11 11:26:38 -07:00
smp.c
cpumask: alloc zeroed cpumask for static cpumask_var_ts
2009-06-09 22:30:27 +09:30
softirq.c
tasklets: new tasklet scheduling function
2009-06-13 10:02:24 +02:00
softlockup.c
spinlock.c
Allow rwlocks to re-enable interrupts
2009-04-02 19:05:11 -07:00
srcu.c
stacktrace.c
stop_machine.c
cpumask: remove cpumask_t from core
2009-03-30 22:05:17 +10:30
sys.c
Merge branch 'linus' into perfcounters/core
2009-04-29 14:47:05 +02:00
sys_ni.c
sysctl.c
kmemcheck: add the kmemcheck core
2009-06-13 15:37:30 +02:00
sysctl_check.c
taskstats.c
test_kprobes.c
time.c
timeconst.pl
timer.c
Merge branch 'linus' into perfcounters/core
2009-06-11 17:55:42 +02:00
tracepoint.c
tracepoints: dont update zero-sized tracepoint sections
2009-03-18 19:55:00 +01:00
tsacct.c
Fix fixpoint divide exception in acct_update_integrals
2009-03-09 08:13:35 -07:00
uid16.c
up.c
user.c
Merge branch 'master' into next
2009-03-24 10:52:46 +11:00
user_namespace.c
Fix recursive lock in free_uid()/free_user_ns()
2009-02-27 16:26:21 -08:00
utsname.c
utsname_sysctl.c
proc_sysctl: use CONFIG_PROC_SYSCTL around ipc and utsname proc_handlers
2009-04-02 19:05:01 -07:00
wait.c
wait: don't use __wake_up_common()
2009-04-14 17:17:16 +02:00
workqueue.c
ftrace, workqueuetrace: make workqueue tracepoints use TRACE_EVENT macro
2009-06-02 01:10:40 +02:00