linux/kernel/trace
Steven Rostedt (VMware) c2a62f84d4 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-02 20:33:22 +01:00
..
blktrace.c Most of the changes are clean ups and small fixes. Some of them have 2015-11-06 13:30:20 -08:00
bpf_trace.c bpf: make tracing helpers gpl only 2015-10-26 21:53:34 -07:00
ftrace.c ftrace: Fix kmemleak in unregister_ftrace_graph 2017-10-12 11:27:33 +02:00
Kconfig Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-11-10 18:11:41 -08:00
Makefile Makefile: Mute warning for __builtin_return_address(>0) for tracing only 2016-09-30 10:18:35 +02:00
power-traces.c
ring_buffer_benchmark.c ring_buffer: Remove unneeded smp_wmb() before wakeup of reader benchmark 2015-11-03 16:19:02 -05:00
ring_buffer.c ring-buffer: Have ring_buffer_iter_empty() return true when empty 2017-04-27 09:09:31 +02:00
rpm-traces.c
trace_benchmark.c tracing: Only benchmark the time tracepoints take if tracing is on 2015-11-02 13:34:58 -05:00
trace_benchmark.h
trace_branch.c tracing: Remove {start,stop}_branch_trace 2015-10-21 10:10:09 -04:00
trace_clock.c
trace_entries.h
trace_event_perf.c treewide: Remove old email address 2015-11-23 09:44:58 +01:00
trace_events_filter_test.h
trace_events_filter.c tracing: Fix freeing of filter in create_filter() when set_str is false 2017-08-30 10:19:24 +02:00
trace_events_trigger.c
trace_events.c tracing: Don't display trigger file for events that can't be enabled 2016-05-11 11:21:13 +02:00
trace_export.c tracing: ftrace_event_is_function() can return boolean 2015-11-02 14:28:05 -05:00
trace_functions_graph.c fgraph: Handle a case where a tracer ignores set_graph_notrace 2017-01-09 08:07:50 +01:00
trace_functions.c
trace_irqsoff.c tracing: Have preempt(irqs)off trace preempt disabled functions 2016-04-12 09:08:59 -07:00
trace_kdb.c tracing: Move trace_flags from global to a trace_array field 2015-09-30 15:22:55 -04:00
trace_kprobe.c tracing/kprobes: Allow to create probe with a module name starting with a digit 2017-07-15 11:57:45 +02:00
trace_mmiotrace.c tracing: Pass trace_array into trace_buffer_unlock_commit() 2015-09-25 17:38:44 -04:00
trace_nop.c
trace_output.c tracing: Move trace_flags from global to a trace_array field 2015-09-30 15:22:55 -04:00
trace_output.h tracing: Turn seq_print_user_ip() into a static function 2015-09-28 10:16:12 -04:00
trace_printk.c tracing: Handle NULL formats in hold_module_trace_bprintk_format() 2016-07-27 09:47:32 -07:00
trace_probe.c
trace_probe.h kernel/trace_probe: is_good_name can be boolean 2015-09-22 13:11:30 -04:00
trace_sched_switch.c sched/core: Fix trace_sched_switch() 2015-10-06 17:08:15 +02:00
trace_sched_wakeup.c Most of the changes are clean ups and small fixes. Some of them have 2015-11-06 13:30:20 -08:00
trace_selftest_dynamic.c
trace_selftest.c ftrace: Fix selftest goto location on error 2017-09-27 11:00:16 +02:00
trace_seq.c
trace_stack.c tracing/stacktrace: Show entire trace if passed in function not found 2016-02-17 12:30:57 -08:00
trace_stat.c
trace_stat.h
trace_syscalls.c tracing: Move trace_flags from global to a trace_array field 2015-09-30 15:22:55 -04:00
trace_uprobe.c
trace.c tracing: Fix possible double free on failure of allocating trace buffer 2018-01-02 20:33:22 +01:00
trace.h tracing: Remove unused ftrace_cpu_disabled per cpu variable 2015-11-07 13:25:14 -05:00