AcoSail/kernel_optimize_test
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195a8afc7a
kernel_optimize_test/kernel/trace
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Steven Rostedt (Red Hat) 195a8afc7a ftrace: Add check for NULL regs if ops has SAVE_REGS set 
If a ftrace ops is registered with the SAVE_REGS flag set, and there's
already a ops registered to one of its functions but without the
SAVE_REGS flag, there's a small race window where the SAVE_REGS ops gets
added to the list of callbacks to call for that function before the
callback trampoline gets set to save the regs.

The problem is, the function is not currently saving regs, which opens
a small race window where the ops that is expecting regs to be passed
to it, wont. This can cause a crash if the callback were to reference
the regs, as the SAVE_REGS guarantees that regs will be set.

To fix this, we add a check in the loop case where it checks if the ops
has the SAVE_REGS flag set, and if so, it will ignore it if regs is
not set.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-07-24 11:22:54 -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: Add check for NULL regs if ops has SAVE_REGS set 2013-07-24 11:22:54 -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
power-traces.c PM / tracing: remove deprecated power trace API 2013-01-26 00:39:12 +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 tracing: Typo fix on ring buffer comments 2013-07-18 21:31:26 -04:00
rpm-traces.c PM / Runtime: Introduce trace points for tracing rpm_* functions 2011-09-27 22:53:27 +02:00
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 tracing/perf: Move the PERF_MAX_TRACE_SIZE check into perf_trace_buf_prepare() 2013-07-18 21:31:28 -04:00
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: Use trace_seq_puts()/trace_seq_putc() where possible 2013-07-18 21:30:36 -04:00
trace_events.c tracing: Do not (ab)use trace_seq in event_id_read() 2013-07-18 21:31:33 -04:00
trace_export.c tracing: Fix some section mismatch warnings 2013-03-15 00:34:54 -04:00
trace_functions_graph.c tracing: Add ref_data to function and fgraph tracer structs 2013-07-18 21:31:31 -04:00
trace_functions.c tracing: Add ref_data to function and fgraph tracer structs 2013-07-18 21:31:31 -04:00
trace_irqsoff.c tracing: Use flag buffer_disabled for irqsoff tracer 2013-07-01 20:34:28 -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/kprobe: Wait for disabling all running kprobe handlers 2013-07-18 21:31:29 -04:00
trace_mmiotrace.c tracing: Use trace_seq_puts()/trace_seq_putc() where possible 2013-07-18 21:30:36 -04:00
trace_nop.c
trace_output.c tracing: Use trace_seq_puts()/trace_seq_putc() where possible 2013-07-18 21:30:36 -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 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_dynamic.c ftrace: Add self-tests for multiple function trace users 2011-05-18 19:24:51 -04:00
trace_selftest.c ftrace: Do not run selftest if command line parameter is set 2013-07-01 20:57:15 -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
trace_syscalls.c tracing/perf: Move the PERF_MAX_TRACE_SIZE check into perf_trace_buf_prepare() 2013-07-18 21:31:28 -04:00
trace_uprobe.c tracing/perf: Move the PERF_MAX_TRACE_SIZE check into perf_trace_buf_prepare() 2013-07-18 21:31:28 -04:00
trace.c tracing: Kill trace_cpu struct/members 2013-07-24 11:22:53 -04:00
trace.h tracing: Kill trace_cpu struct/members 2013-07-24 11:22:53 -04:00