Steven Rostedt 06a51d9307 ftrace: Create ftrace_hash_empty() helper routine ...

There are two types of hashes in the ftrace_ops; one type
is the filter_hash and the other is the notrace_hash. Either
one may be null, meaning it has no elements. But when elements
are added, the hash is allocated.

Throughout the code, a check needs to be made to see if a hash
exists or the hash has elements, but the check if the hash exists
is usually missing causing the possible "NULL pointer dereference bug".

Add a helper routine called "ftrace_hash_empty()" that returns
true if the hash doesn't exist or its count is zero. As they mean
the same thing.

Last-bug-reported-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

2011-12-21 07:23:11 -05:00

..

blktrace.c

kernel: Fix files explicitly needing EXPORT_SYMBOL infrastructure

2011-10-31 19:30:05 -04:00

ftrace.c

ftrace: Create ftrace_hash_empty() helper routine

2011-12-21 07:23:11 -05:00

Kconfig

trace events: Update version number reference to new 3.x scheme for EVENT_POWER_TRACING_DEPRECATED

2011-07-25 09:37:21 +02:00

Makefile

Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2011-10-26 17:03:38 +02:00

power-traces.c

perf: Clean up power events by introducing new, more generic ones

2011-01-04 08:16:54 +01:00

ring_buffer_benchmark.c

tracing: Use NUMA allocation for per-cpu ring buffer pages

2011-06-14 22:04:39 -04:00

ring_buffer.c

Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2011-10-26 17:03:38 +02:00

rpm-traces.c

PM / Runtime: Introduce trace points for tracing rpm_* functions

2011-09-27 22:53:27 +02:00

trace_branch.c

…

trace_clock.c

tracing: Add a counter clock for those that do not trust clocks

2011-09-19 11:35:58 -04:00

trace_entries.h

tracing: Have dynamic size event stack traces

2011-07-14 16:36:53 -04:00

trace_event_perf.c

tracing: New flag to allow non privileged users to use a trace event

2010-11-18 14:37:40 +01:00

trace_events_filter_test.h

tracing/filter: Add startup tests for events filter

2011-08-19 14:35:59 -04:00

trace_events_filter.c

Merge branch 'perf/urgent' into perf/core

2011-12-06 06:43:49 +01:00

trace_events.c

tracing: fix event_subsystem ref counting

2011-12-05 13:28:44 -05:00

trace_export.c

tracing: Replace trace_event struct array with pointer array

2011-02-02 21:37:13 -05:00

trace_functions_graph.c

tracing: Still trace filtered irq functions when irq trace is disabled

2011-07-07 22:26:27 -04:00

trace_functions.c

ftrace: Fix regression of :mod:module function enabling

2011-07-07 11:30:08 -04:00

trace_irqsoff.c

Merge branch 'tip/perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/core

2011-11-11 08:19:37 +01:00

trace_kdb.c

kdb,ftdump: Remove reference to internal kdb include

2010-10-22 15:34:11 -05:00

trace_kprobe.c

ftrace/kprobes: Fix not to delete probes if in use

2011-10-10 15:13:03 -04:00

trace_mmiotrace.c

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

trace_nop.c

…

trace_output.c

tracing: Add irq, preempt-count and need resched info to default trace output

2011-11-17 09:58:48 -05:00

trace_output.h

…

trace_printk.c

tracing: Clean up tb_fmt to not give faulty compile warning

2011-08-10 20:36:32 -04:00

trace_sched_switch.c

tracing: Remove obsolete sched_switch tracer

2011-02-08 17:14:56 -05:00

trace_sched_wakeup.c

tracing/latency: Fix header output for latency tracers

2011-11-07 13:48:35 -05:00

trace_selftest_dynamic.c

ftrace: Add self-tests for multiple function trace users

2011-05-18 19:24:51 -04:00

trace_selftest.c

ftrace: Add self-tests for multiple function trace users

2011-05-18 19:24:51 -04:00

trace_stack.c

tracing: Convert to kstrtoul_from_user

2011-06-14 22:48:50 -04:00

trace_stat.c

…

trace_stat.h

…

trace_syscalls.c

kernel: Add <linux/module.h> to files using it implicitly

2011-10-31 09:20:12 -04:00

trace_workqueue.c

jump label: Initialize workqueue tracepoints *before* they are registered

2010-09-22 16:30:03 -04:00

trace.c

tracing: Add entries in buffer and total entries to default output header

2011-11-17 11:10:43 -05:00

trace.h

tracing: Add irq, preempt-count and need resched info to default trace output

2011-11-17 09:58:48 -05:00