Lai Jiangshan 38ceb592fc tracing: Fix invalid function_graph entry ... When print_graph_entry() computes a function call entry event, it needs to also check the next entry to guess if it matches the return event of the current function entry. In order to look at this next event, it needs to consume the current entry before going ahead in the ring buffer. However, if the current event that gets consumed is the last one in the ring buffer head page, the ring_buffer may reuse the page for writers. The consumed entry will then become invalid because of possible racy overwriting. Me must then handle this entry by making a copy of it. The fix also applies on 2.6.30 Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: stable@kernel.org LKML-Reference: <4A6EEAEC.3050508@cn.fujitsu.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>		2009-07-28 23:17:23 +02:00
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blktrace.c	headers: smp_lock.h redux	2009-07-12 12:22:34 -07:00
ftrace.c	tracing/function-profiler: do not free per cpu variable stat	2009-07-13 11:01:10 +02:00
Kconfig	tracing/fastboot: Document the need of initcall_debug	2009-06-29 10:22:10 +02:00
kmemtrace.c	cpumask: use new operators in kernel/trace	2009-06-15 11:36:42 -04:00
Makefile	tracing/events: convert block trace points to TRACE_EVENT()	2009-06-09 12:34:23 -04:00
ring_buffer_benchmark.c	ring-buffer: have benchmark test print to trace buffer	2009-06-17 17:01:09 -04:00
ring_buffer.c	ring-buffer: Make it generally available	2009-06-25 10:31:30 +02:00
trace_boot.c	tracing: use macros to denote usec and nsec per second	2009-04-07 14:43:06 +02:00
trace_branch.c	Merge branch 'linus' into tracing/core	2009-05-07 11:17:34 +02:00
trace_clock.c	tracing: fix four sparse warnings	2009-03-22 18:16:54 +01:00
trace_event_profile.c	tracing/events: fix concurrent access to ftrace_events list	2009-05-06 10:38:19 +02:00
trace_event_types.h	trace_export: Repair missed fields	2009-06-26 20:48:40 +02:00
trace_events_filter.c	tracing/filters: fix race between filter setting and module unload	2009-06-16 16:25:37 -04:00
trace_events.c	tracing/events: Don't increment @pos in s_start()	2009-06-24 11:02:49 +02:00
trace_export.c	tracing/filters: distinguish between signed and unsigned fields	2009-04-29 14:06:03 +02:00
trace_functions_graph.c	tracing: Fix invalid function_graph entry	2009-07-28 23:17:23 +02:00
trace_functions.c	tracing/function: Fix the return value of ftrace_trace_onoff_callback()	2009-07-16 23:34:32 -04:00
trace_hw_branches.c	Merge branch 'tracing/hw-branch-tracing' into tracing/core	2009-05-07 13:36:22 +02:00
trace_irqsoff.c	tracing: have latency tracers set the latency format	2009-03-04 22:15:30 -05:00
trace_mmiotrace.c	tracing: use macros to denote usec and nsec per second	2009-04-07 14:43:06 +02:00
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: Fix trace_print_seq()	2009-07-02 08:51:13 +02:00
trace_output.h	tracing: add protection around module events unload	2009-06-09 17:29:07 -04:00
trace_power.c	Merge branch 'linus' into tracing/core	2009-05-07 11:17:34 +02:00
trace_printk.c	tracing_bprintk: Don't increment @pos in t_start()	2009-06-24 11:02:50 +02:00
trace_sched_switch.c	tracing/events: move trace point headers into include/trace/events	2009-04-14 22:05:43 -04:00
trace_sched_wakeup.c	tracing/wakeup: move access to wakeup_cpu into spinlock	2009-04-23 23:01:36 -04:00
trace_selftest_dynamic.c	ftrace: fix dynamic ftrace selftest	2008-05-23 21:13:23 +02:00
trace_selftest.c	x86, hw-branch-tracer: allocate selftest iterator on heap	2009-04-07 13:36:21 +02:00
trace_stack.c	tracing: Fix stack tracer sysctl handling	2009-06-26 20:48:39 +02:00
trace_stat.c	trace_stat: Don't increment @pos in seq start()	2009-06-24 11:02:51 +02:00
trace_stat.h	tracing: add handler to trace_stat	2009-03-24 23:22:58 -04:00
trace_syscalls.c	tracing/syscalls: use a dedicated file header	2009-04-09 05:43:32 +02:00
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	trace_workqueue: remove blank line between each cpu	2009-06-02 01:14:26 +02:00
trace.c	headers: smp_lock.h redux	2009-07-12 12:22:34 -07:00
trace.h	ring-buffer: Make it generally available	2009-06-25 10:31:30 +02:00