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linux/kernel/trace
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Steven Rostedt (VMware) dd520da215 tracing: Fix possible double free on failure of allocating trace buffer 
commit 4397f04575 upstream.

Jing Xia and Chunyan Zhang reported that on failing to allocate part of the
tracing buffer, memory is freed, but the pointers that point to them are not
initialized back to NULL, and later paths may try to free the freed memory
again. Jing and Chunyan fixed one of the locations that does this, but
missed a spot.

Link: http://lkml.kernel.org/r/20171226071253.8968-1-chunyan.zhang@spreadtrum.com

Fixes: 737223fbca ("tracing: Consolidate buffer allocation code")
Reported-by: Jing Xia <jing.xia@spreadtrum.com>
Reported-by: Chunyan Zhang <chunyan.zhang@spreadtrum.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
History 2018-03-03 15:52:07 +00:00
..
blktrace.c blktrace: fix trace mutex deadlock 2018-03-03 15:51:34 +00:00
ftrace.c ftrace: Fix removing of second function probe 2017-08-26 02:14:33 +01:00
Kconfig tracing: Add tracepoint benchmark tracepoint 2014-05-29 22:49:54 -04:00
Makefile tracing: Add tracepoint benchmark tracepoint 2014-05-29 22:49:54 -04:00
power-traces.c PM / tracing: remove deprecated power trace API 2013-01-26 00:39:12 +01:00
ring_buffer.c ring-buffer: Mask out the info bits when returning buffer page length 2018-03-03 15:52:07 +00:00
ring_buffer_benchmark.c ring-buffer-benchmark: Fix the wrong sched_priority of producer 2015-06-30 17:15:24 +01:00
rpm-traces.c PM / Runtime: Introduce trace points for tracing rpm_* functions 2011-09-27 22:53:27 +02:00
trace.c tracing: Fix possible double free on failure of allocating trace buffer 2018-03-03 15:52:07 +00:00
trace.h tracing: Have branch tracer use recursive field of task struct 2015-08-10 09:54:15 +01:00
trace_benchmark.c tracing: Only calculate stats of tracepoint benchmarks for 2^32 times 2014-06-06 00:41:38 -04:00
trace_benchmark.h tracing: Add tracepoint benchmark tracepoint 2014-05-29 22:49:54 -04:00
trace_branch.c tracing: Have branch tracer use recursive field of task struct 2015-08-10 09:54:15 +01:00
trace_clock.c tracing: Fix wraparound problems in "uptime" trace clock 2014-07-21 09:56:12 -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 perf: Avoid horrible stack usage 2017-11-11 13:34:02 +00:00
trace_events.c tracing: Don't display trigger file for events that can't be enabled 2016-06-15 21:29:30 +01:00
trace_events_filter.c tracing: Fix freeing of filter in create_filter() when set_str is false 2017-11-11 13:33:25 +00:00
trace_events_filter_test.h tracing/filter: Add startup tests for events filter 2011-08-19 14:35:59 -04:00
trace_events_trigger.c tracing: Use rcu_dereference_sched() for trace event triggers 2014-05-02 23:12:42 -04:00
trace_export.c tracing: Fix anonymous unions in struct ftrace_event_call 2014-04-09 20:02:55 -04:00
trace_functions.c tracing: Remove mock up poll wait function 2014-04-30 08:40:05 -04:00
trace_functions_graph.c fgraph: Handle a case where a tracer ignores set_graph_notrace 2017-03-16 02:26:33 +00:00
trace_irqsoff.c tracing: Have preempt(irqs)off trace preempt disabled functions 2016-05-01 00:06:02 +02:00
trace_kdb.c tracing: Consolidate max_tr into main trace_array structure 2013-03-15 00:35:40 -04:00
trace_kprobe.c perf: Avoid horrible stack usage 2017-11-11 13:34:02 +00:00
trace_mmiotrace.c tracing: Update event filters for multibuffer 2013-11-05 16:50:20 -05:00
trace_nop.c tracing: Remove mock up poll wait function 2014-04-30 08:40:05 -04:00
trace_output.c tracing: Add __bitmask() macro to trace events to cpumasks and other bitmasks 2014-05-15 11:29:37 -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: Handle NULL formats in hold_module_trace_bprintk_format() 2016-08-22 22:38:17 +01:00
trace_probe.c kprobes, ftrace: Use NOKPROBE_SYMBOL macro in ftrace 2014-04-24 10:26:39 +02:00
trace_probe.h kprobes, ftrace: Use NOKPROBE_SYMBOL macro in ftrace 2014-04-24 10:26:39 +02:00
trace_sched_switch.c tracing: Update event filters for multibuffer 2013-11-05 16:50:20 -05:00
trace_sched_wakeup.c tracing: Remove mock up poll wait function 2014-04-30 08:40:05 -04:00
trace_selftest.c ftrace: Fix selftest goto location on error 2017-11-26 13:50:29 +00:00
trace_selftest_dynamic.c ftrace: Add self-tests for multiple function trace users 2011-05-18 19:24:51 -04:00
trace_stack.c tracing: Print max callstack on stacktrace bug 2014-06-02 16:43:49 -04:00
trace_stat.c trace/trace_stat: use rbtree postorder iteration helper instead of opencoding 2013-11-05 16:01:47 -05:00
trace_stat.h tracing/stat: Add stat_release() callback 2009-07-10 12:14:05 +02:00
trace_syscalls.c perf: Avoid horrible stack usage 2017-11-11 13:34:02 +00:00
trace_uprobe.c perf: Avoid horrible stack usage 2017-11-11 13:34:02 +00:00