Masami Hiramatsu 6ed0106667 tracing: Return -EBUSY when event_enable_func() fails to get module ... Since try_module_get() returns false( = 0) when it fails to pindown a module, event_enable_func() returns 0 which means "succeed". This can cause a kernel panic when the entry is removed, because the event is already released. This fixes the bug by returning -EBUSY, because the reason why it fails is that the module is being removed at that time. Link: http://lkml.kernel.org/r/20130516114848.13508.97899.stgit@mhiramat-M0-7522 Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Tom Zanussi <tom.zanussi@intel.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>		2013-05-16 11:01:16 -04:00
..
Kconfig	ring-buffer: Select IRQ_WORK	2013-05-03 19:24:17 -04:00
Makefile	trace: Stop compiling in trace_clock unconditionally	2012-09-13 22:52:08 -04:00
blktrace.c	Merge branch 'for-3.10/drivers' of git://git.kernel.dk/linux-block	2013-05-08 11:51:05 -07:00
ftrace.c	ftrace: Fix function probe when more than one probe is added	2013-05-09 20:16:27 -04:00
power-traces.c	PM / tracing: remove deprecated power trace API	2013-01-26 00:39:12 +01:00
ring_buffer.c	Tracing updates for Linux 3.10	2013-04-29 13:55:38 -07:00
ring_buffer_benchmark.c	tracing: Use NUMA allocation for per-cpu ring buffer pages	2011-06-14 22:04:39 -04:00
rpm-traces.c	PM / Runtime: Introduce trace points for tracing rpm_* functions	2011-09-27 22:53:27 +02:00
trace.c	tracing: Fix small merge bug	2013-04-30 07:23:08 -07:00
trace.h	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-04-30 07:41:01 -07:00
trace_branch.c	tracing: Fix the branch tracer that broke with buffer change	2013-03-15 00:35:54 -04:00
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/core improvements and fixes:	2012-08-21 11:27:00 +02:00
trace_events.c	tracing: Return -EBUSY when event_enable_func() fails to get module	2013-05-16 11:01:16 -04:00
trace_events_filter.c	tracing: Fix leaks of filter preds	2013-05-15 13:49:18 -04:00
trace_events_filter_test.h	tracing/filter: Add startup tests for events filter	2011-08-19 14:35:59 -04:00
trace_export.c	tracing: Fix some section mismatch warnings	2013-03-15 00:34:54 -04:00
trace_functions.c	tracing: Add function probe to trigger stack traces	2013-03-15 00:36:05 -04:00
trace_functions_graph.c	tracing: Consolidate max_tr into main trace_array structure	2013-03-15 00:35:40 -04:00
trace_irqsoff.c	tracing: Add function-trace option to disable function tracing of latency tracers	2013-03-15 00:36:08 -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	tracing/kprobes: Make print_*probe_event static	2013-05-15 13:50:24 -04:00
trace_mmiotrace.c	tracing: Consolidate max_tr into main trace_array structure	2013-03-15 00:35:40 -04:00
trace_nop.c	tracing/ftrace: make nop-tracer use polling wait for events on pipe	2009-03-23 09:22:15 +01:00
trace_output.c	Tracing updates for Linux 3.10	2013-04-29 13:55:38 -07:00
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 percpu buffers for trace_printk()	2012-04-23 21:15:55 -04:00
trace_probe.c	tracing: Replace strict_strto* with kstrto*	2012-10-31 16:45:23 -04:00
trace_probe.h	uprobes/tracing: Introduce is_trace_uprobe_enabled()	2013-02-08 18:24:30 +01:00
trace_sched_switch.c	tracing: Consolidate max_tr into main trace_array structure	2013-03-15 00:35:40 -04:00
trace_sched_wakeup.c	tracing: Add function-trace option to disable function tracing of latency tracers	2013-03-15 00:36:08 -04:00
trace_selftest.c	tracing: Fix ftrace_dump()	2013-03-15 19:24:56 -04:00
trace_selftest_dynamic.c	ftrace: Add self-tests for multiple function trace users	2011-05-18 19:24:51 -04:00
trace_stack.c	Tracing updates for Linux 3.10	2013-04-29 13:55:38 -07:00
trace_stat.c	tracing: Check return value of tracing_init_dentry()	2013-04-12 23:02:32 -04:00
trace_stat.h	tracing/stat: Add stat_release() callback	2009-07-10 12:14:05 +02:00
trace_syscalls.c	tracing: Fix comment about prefix in arch_syscall_match_sym_name()	2013-03-15 13:22:09 -04:00
trace_uprobe.c	uprobes/perf: Avoid perf_trace_buf_prepare/submit if ->perf_events is empty	2013-04-15 17:39:52 +02:00