Yoshihiro YUNOMAE dc81e5e3ab tracing: Return error if ftrace_trace_arrays list is empty ... ftrace_trace_arrays links global_trace.list. However, global_trace is not added to ftrace_trace_arrays if trace_alloc_buffers() failed. As the result, ftrace_trace_arrays becomes an empty list. If ftrace_trace_arrays is an empty list, current top_trace_array() returns an invalid pointer. As the result, the kernel can induce memory corruption or panic. Current implementation does not check whether ftrace_trace_arrays is empty list or not. So, in this patch, if ftrace_trace_arrays is empty list, top_trace_array() returns NULL. Moreover, this patch makes all functions calling top_trace_array() handle it appropriately. Link: http://lkml.kernel.org/p/20140605223517.32311.99233.stgit@yunodevel Signed-off-by: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>		2014-06-06 04:47:46 -04:00
..
blktrace.c	Most of the changes were largely clean ups, and some documentation.	2014-04-03 10:26:31 -07:00
ftrace.c	ftrace: Remove FTRACE_UPDATE_MODIFY_CALL_REGS flag	2014-05-14 11:37:30 -04:00
Kconfig	tracing: Add tracepoint benchmark tracepoint	2014-05-29 22:49:54 -04:00
Makefile	tracing: Add tracepoint benchmark tracepoint	2014-05-29 22:49:54 -04:00
power-traces.c	PM / tracing: remove deprecated power trace API	2013-01-26 00:39:12 +01:00
ring_buffer_benchmark.c	trace: Replace hardcoding of 19 with MAX_NICE	2014-02-27 12:41:03 +01:00
ring_buffer.c	trace, ring-buffer: Fix CPU hotplug callback registration	2014-03-20 13:43:48 +01:00
rpm-traces.c	PM / Runtime: Introduce trace points for tracing rpm_* functions	2011-09-27 22:53:27 +02:00
trace_benchmark.c	tracing: Only calculate stats of tracepoint benchmarks for 2^32 times	2014-06-06 00:41:38 -04:00
trace_benchmark.h	tracing: Add tracepoint benchmark tracepoint	2014-05-29 22:49:54 -04:00
trace_branch.c	tracing: Update event filters for multibuffer	2013-11-05 16:50:20 -05:00
trace_clock.c	tracing: Add "uptime" trace clock that uses jiffies	2013-03-15 00:36:09 -04:00
trace_entries.h	tracing: Add trace_puts() for even faster trace_printk() tracing	2013-03-15 00:35:55 -04:00
trace_event_perf.c	perf: Disallow user-space stack dumps for function trace events	2014-03-11 11:57:58 +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	tracing: Add and use generic set_trigger_filter() implementation	2013-12-21 22:02:17 -05:00
trace_events_trigger.c	tracepoint: Use struct pointer instead of name hash for reg/unreg tracepoints	2014-04-08 20:43:28 -04:00
trace_events.c	tracing: Return error if ftrace_trace_arrays list is empty	2014-06-06 04:47:46 -04:00
trace_export.c	tracing: Fix anonymous unions in struct ftrace_event_call	2014-04-09 20:02:55 -04:00
trace_functions_graph.c	tracing: Add funcgraph_tail option to print function name after closing braces	2014-05-20 23:29:32 -04:00
trace_functions.c	tracing: Remove mock up poll wait function	2014-04-30 08:40:05 -04:00
trace_irqsoff.c	tracing: Allow irq/preempt tracers to be used by instances	2014-04-21 13:59:29 -04:00
trace_kdb.c	tracing: Consolidate max_tr into main trace_array structure	2013-03-15 00:35:40 -04:00
trace_kprobe.c	tracepoint: Use struct pointer instead of name hash for reg/unreg tracepoints	2014-04-08 20:43:28 -04:00
trace_mmiotrace.c	tracing: Update event filters for multibuffer	2013-11-05 16:50:20 -05:00
trace_nop.c	tracing: Remove mock up poll wait function	2014-04-30 08:40:05 -04:00
trace_output.c	tracing: Add __bitmask() macro to trace events to cpumasks and other bitmasks	2014-05-15 11:29:37 -04:00
trace_output.h	tracing: Rename trace_event_mutex to trace_event_sem	2013-03-15 13:22:10 -04:00
trace_printk.c	tracing: Add __tracepoint_string() to export string pointers	2013-07-26 13:39:44 -04:00
trace_probe.c	tracing/uprobes: Add @+file_offset fetch method	2014-01-02 20:57:05 -05:00
trace_probe.h	tracing/uprobes: Support ftrace_event_file base multibuffer	2014-02-20 12:30:09 -05:00
trace_sched_switch.c	tracing: Update event filters for multibuffer	2013-11-05 16:50:20 -05:00
trace_sched_wakeup.c	tracing: Remove mock up poll wait function	2014-04-30 08:40:05 -04:00
trace_selftest_dynamic.c	ftrace: Add self-tests for multiple function trace users	2011-05-18 19:24:51 -04:00
trace_selftest.c	tracing: Add static to local functions	2014-04-21 14:00:46 -04:00
trace_stack.c	tracing: Print max callstack on stacktrace bug	2014-06-02 16:43:49 -04:00
trace_stat.c	trace/trace_stat: use rbtree postorder iteration helper instead of opencoding	2013-11-05 16:01:47 -05:00
trace_stat.h	tracing/stat: Add stat_release() callback	2009-07-10 12:14:05 +02:00
trace_syscalls.c	tracing: Consolidate event trigger code	2014-01-09 21:20:07 -05:00
trace_uprobe.c	tracing/uprobes: Fix uprobe_cpu_buffer memory leak	2014-04-17 10:44:42 -04:00
trace.c	tracing: Introduce saved_cmdlines_size file	2014-06-05 12:35:49 -04:00
trace.h	tracing: Return error if ftrace_trace_arrays list is empty	2014-06-06 04:47:46 -04:00