Steven Rostedt (Red Hat) 23b929f9c3 tracing: Fix leaks of filter preds ...

commit 60705c89460fdc7227f2d153b68b3f34814738a4 upstream.

Special preds are created when folding a series of preds that
can be done in serial. These are allocated in an ops field of
the pred structure. But they were never freed, causing memory
leaks.

This was discovered using the kmemleak checker:

unreferenced object 0xffff8800797fd5e0 (size 32):
  comm "swapper/0", pid 1, jiffies 4294690605 (age 104.608s)
  hex dump (first 32 bytes):
    00 00 01 00 03 00 05 00 07 00 09 00 0b 00 0d 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff814b52af>] kmemleak_alloc+0x73/0x98
    [<ffffffff8111ff84>] kmemleak_alloc_recursive.constprop.42+0x16/0x18
    [<ffffffff81120e68>] __kmalloc+0xd7/0x125
    [<ffffffff810d47eb>] kcalloc.constprop.24+0x2d/0x2f
    [<ffffffff810d4896>] fold_pred_tree_cb+0xa9/0xf4
    [<ffffffff810d3781>] walk_pred_tree+0x47/0xcc
    [<ffffffff810d5030>] replace_preds.isra.20+0x6f8/0x72f
    [<ffffffff810d50b5>] create_filter+0x4e/0x8b
    [<ffffffff81b1c30d>] ftrace_test_event_filter+0x5a/0x155
    [<ffffffff8100028d>] do_one_initcall+0xa0/0x137
    [<ffffffff81afbedf>] kernel_init_freeable+0x14d/0x1dc
    [<ffffffff814b24b7>] kernel_init+0xe/0xdb
    [<ffffffff814d539c>] ret_from_fork+0x7c/0xb0
    [<ffffffffffffffff>] 0xffffffffffffffff

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Tom Zanussi <tzanussi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2013-05-19 11:38:25 -07:00

..

blktrace.c

Revert "block: add missing block_bio_complete() tracepoint"

2013-04-18 09:00:26 -07:00

ftrace.c

tracing: Reset ftrace_graph_filter_enabled if count is zero

2013-05-07 20:33:08 -07:00

Kconfig

Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2013-03-11 07:54:29 -07:00

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

ImgTec Meta architecture changes for v3.9-rc1

2013-03-03 12:06:09 -08:00

rpm-traces.c

PM / Runtime: Introduce trace points for tracing rpm_* functions

2011-09-27 22:53:27 +02:00

trace_branch.c

tracing: Cache comms only after an event occurred

2012-10-31 16:45:31 -04:00

trace_clock.c

Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2013-02-19 17:49:41 -08:00

trace_entries.h

Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/urgent

2012-03-24 08:19:09 +01:00

trace_event_perf.c

perf/core improvements and fixes:

2012-08-21 11:27:00 +02:00

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: Fix leaks of filter preds

2013-05-19 11:38:25 -07:00

trace_events.c

tracing: Remove the extra 4 bytes of padding in events

2013-01-21 21:05:41 -05:00

trace_export.c

tracing: Do not enable function event with enable

2012-05-10 15:55:43 -04:00

trace_functions_graph.c

tracing/fgraph: Adjust fgraph depth before calling trace return callback

2013-01-29 17:30:31 -05:00

trace_functions.c

tracing: Fix unsigned int compare of zero in recursion check

2013-01-24 07:52:34 -05:00

trace_irqsoff.c

tracing: Prevent buffer overwrite disabled for latency tracers

2013-03-14 23:40:21 -04:00

trace_kdb.c

kdb,ftdump: Remove reference to internal kdb include

2010-10-22 15:34:11 -05:00

trace_kprobe.c

tracing: Use irq_work for wake ups and remove *_nowake_*() functions

2012-11-02 10:21:52 -04:00

trace_mmiotrace.c

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

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

hlist: drop the node parameter from iterators

2013-02-27 19:10:24 -08:00

trace_output.h

tracing: Allow events to share their print functions

2010-05-14 14:20:32 -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: Use irq_work for wake ups and remove *_nowake_*() functions

2012-11-02 10:21:52 -04:00

trace_sched_wakeup.c

tracing: Prevent buffer overwrite disabled for latency tracers

2013-03-14 23:40:21 -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

tracing: Fix ftrace_dump()

2013-05-11 07:18:36 -07:00

trace_stack.c

tracing: Check return value of tracing_init_dentry()

2013-05-07 20:33:08 -07:00

trace_stat.c

tracing: Check return value of tracing_init_dentry()

2013-05-07 20:33:08 -07:00

trace_stat.h

tracing/stat: Add stat_release() callback

2009-07-10 12:14:05 +02:00

trace_syscalls.c

tracing/syscalls: Allow archs to ignore tracing compat syscalls

2013-02-12 17:46:28 -05:00

trace_uprobe.c

uprobes/perf: Avoid uprobe_apply() whenever possible

2013-02-08 18:28:08 +01:00

trace.c

tracing: Fix ftrace_dump()

2013-05-11 07:18:36 -07:00

trace.h

tracing: Prevent buffer overwrite disabled for latency tracers

2013-03-14 23:40:21 -04:00