Oleg Nesterov e2912b091c tracing: Change event_filter_read/write to verify i_private != NULL ...

event_filter_read/write() are racy, ftrace_event_call can be already
freed by trace_remove_event_call() callers.

1. Shift mutex_lock(event_mutex) from print/apply_event_filter to
   the callers.

2. Change the callers, event_filter_read() and event_filter_write()
   to read i_private under this mutex and abort if it is NULL.

This fixes nothing, but now we can change debugfs_remove("filter")
callers to nullify ->i_private and fix the the problem.

Link: http://lkml.kernel.org/r/20130726172540.GA3619@redhat.com

Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

2013-07-29 22:56:59 -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: Change event_filter_read/write to verify i_private != NULL

2013-07-29 22:56:59 -04:00

trace_events.c

tracing: Change event_filter_read/write to verify i_private != NULL

2013-07-29 22:56:59 -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

Merge tag 'trace-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

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: Remove locking trace_types_lock from tracing_reset_all_online_cpus()

2013-07-26 08:57:32 -04:00

trace.h

tracing: Kill trace_cpu struct/members

2013-07-24 11:22:53 -04:00