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fe8e5b5a60
linux/kernel/trace
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Frederic Weisbecker fe8e5b5a60 tracing: Check total refcount before releasing bufs in profile_enable failure 
When we call the profile_enable() callback of an event, we release the
shared perf event tracing buffers unconditionnaly in the failure path.
This is wrong because there may be other users of these. Then check the
total refcount before doing this.

Reported-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Li Zefan <lizf@cn.fujitsu.com>
2009-10-05 10:57:41 +02:00
..
blktrace.c Merge commit 'v2.6.31-rc9' into tracing/core 2009-09-06 06:11:42 +02:00
ftrace.c Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-09-26 10:13:54 -07:00
Kconfig trivial: Fix duplicated word "options" in comment 2009-09-21 15:14:58 +02:00
kmemtrace.c tracing: remove users of tracing_reset 2009-09-04 12:12:39 -04:00
Makefile tracing, perf: Convert the power tracer into an event tracer 2009-09-19 11:42:12 +02:00
power-traces.c tracing, perf: Convert the power tracer into an event tracer 2009-09-19 11:42:12 +02:00
ring_buffer_benchmark.c ring-buffer: have benchmark test print to trace buffer 2009-06-17 17:01:09 -04:00
ring_buffer.c includecheck fix: kernel/trace, ring_buffer.c 2009-09-20 16:58:56 +05:30
trace_boot.c tracing: add filter event logic to special, mmiotrace and boot tracers 2009-09-12 23:34:04 -04:00
trace_branch.c Merge branch 'linus' into tracing/core 2009-05-07 11:17:34 +02:00
trace_clock.c tracing: optimize global_trace_clock cachelines 2009-09-15 12:24:22 -04:00
trace_entries.h tracing, perf: Convert the power tracer into an event tracer 2009-09-19 11:42:12 +02:00
trace_event_profile.c tracing: Check total refcount before releasing bufs in profile_enable failure 2009-10-05 10:57:41 +02:00
trace_events_filter.c tracing: move PRED macros to trace_events_filter.c 2009-09-09 23:54:11 -04:00
trace_events.c tracing: Check the return value of trace_get_user() 2009-09-22 10:28:55 +02:00
trace_export.c tracing: remove some unused macros 2009-09-14 11:43:24 -04:00
trace_functions_graph.c tracing: switch function prints from %pf to %ps 2009-09-17 15:53:40 -04:00
trace_functions.c tracing: switch function prints from %pf to %ps 2009-09-17 15:53:40 -04:00
trace_hw_branches.c trivial: remove unnecessary semicolons 2009-09-21 15:14:58 +02:00
trace_irqsoff.c tracing: do not update tracing_max_latency when tracer is stopped 2009-09-12 21:45:17 -04:00
trace_mmiotrace.c tracing: add filter event logic to special, mmiotrace and boot tracers 2009-09-12 23:34:04 -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: consolidate code between trace_output.c and trace_function_graph.c 2009-09-11 14:24:13 -04:00
trace_output.h tracing: consolidate code between trace_output.c and trace_function_graph.c 2009-09-11 14:24:13 -04:00
trace_printk.c tracing: Remove markers 2009-09-18 21:22:08 +02:00
trace_sched_switch.c tracing: pass around ring buffer instead of tracer 2009-09-04 18:59:39 -04:00
trace_sched_wakeup.c tracing: do not update tracing_max_latency when tracer is stopped 2009-09-12 21:45:17 -04:00
trace_selftest_dynamic.c ftrace: fix dynamic ftrace selftest 2008-05-23 21:13:23 +02:00
trace_selftest.c tracing/function-graph-tracer: Move graph event insertion helpers in the graph tracer file 2009-08-06 07:28:06 +02:00
trace_stack.c sysctl: remove "struct file *" argument of ->proc_handler 2009-09-24 07:21:04 -07:00
trace_stat.c trace_stat: Fix missing entry in stat file 2009-08-17 11:25:09 +02:00
trace_stat.h tracing/stat: Add stat_release() callback 2009-07-10 12:14:05 +02:00
trace_syscalls.c Merge branch 'perfcounters-rename-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-09-21 09:15:07 -07:00
trace_sysprof.c Merge branch 'timers-for-linus-migration' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-06-15 10:06:19 -07:00
trace_workqueue.c tracing/workqueues: Add refcnt to struct cpu_workqueue_stats 2009-07-10 12:14:07 +02:00
trace.c Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-09-26 10:13:54 -07:00
trace.h tracing, perf: Convert the power tracer into an event tracer 2009-09-19 11:42:12 +02:00