Prateek Sood ad677f2848 tracing: Fix lock inversion in trace_event_enable_tgid_record() ...

Task T2                             Task T3
trace_options_core_write()            subsystem_open()

 mutex_lock(trace_types_lock)           mutex_lock(event_mutex)

 set_tracer_flag()

   trace_event_enable_tgid_record()       mutex_lock(trace_types_lock)

    mutex_lock(event_mutex)

This gives a circular dependency deadlock between trace_types_lock and
event_mutex. To fix this invert the usage of trace_types_lock and
event_mutex in trace_options_core_write(). This keeps the sequence of
lock usage consistent.

Change-Id: Ide261e25fb15f79391a6220eef246e274b0c6a69
Signed-off-by: Prateek Sood <prsood@codeaurora.org>

2019-12-27 18:57:40 -08:00

..

blktrace.c

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bpf_trace.c

bpf: fix nested bpf tracepoints with per-cpu data

2019-07-03 13:14:48 +02:00

ftrace.c

Merge 4.19.80 into android-4.19-q

2019-10-17 15:33:53 -07:00

ipc_logging_debug.c

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ipc_logging_private.h

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ipc_logging.c

trace: ipc_logging: Fix memory leak of "struct dfunc_info"

2019-06-18 22:18:45 -07:00

Kconfig

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Makefile

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msm_rtb.c

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power-traces.c

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preemptirq_delay_test.c

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ring_buffer_benchmark.c

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ring_buffer.c

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rpm-traces.c

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trace_benchmark.c

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trace_benchmark.h

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trace_branch.c

Revert "x86/uaccess, ftrace: Fix ftrace_likely_update() vs. SMAP"

2019-07-03 13:14:41 +02:00

trace_clock.c

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trace_entries.h

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trace_event_perf.c

tracing: Fix race in perf_trace_buf initialization

2019-10-29 09:20:03 +01:00

trace_events_filter_test.h

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trace_events_filter.c

tracing: Avoid memory leak in predicate_parse()

2019-06-09 09:17:14 +02:00

trace_events_hist.c

Merge android-4.19-q.79 (40321f2) into msm-4.19

2019-10-21 05:07:30 -07:00

trace_events_trigger.c

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trace_events.c

tracing: Fix lock inversion in trace_event_enable_tgid_record()

2019-12-27 18:57:40 -08:00

trace_export.c

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trace_functions_graph.c

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trace_functions.c

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trace_hwlat.c

tracing/hwlat: Don't ignore outer-loop duration when calculating max_latency

2019-10-17 13:45:39 -07:00

trace_irqsoff.c

trace: filter out spurious preemption and IRQs disable traces

2019-09-30 13:18:59 -07:00

trace_kdb.c

tracing: Silence GCC 9 array bounds warning

2019-06-25 11:35:52 +08:00

trace_kprobe_selftest.c

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trace_kprobe_selftest.h

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trace_kprobe.c

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trace_mmiotrace.c

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trace_nop.c

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trace_output.c

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trace_output.h

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trace_preemptirq.c

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trace_printk.c

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trace_probe.c

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trace_probe.h

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trace_sched_switch.c

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trace_sched_wakeup.c

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trace_selftest_dynamic.c

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trace_selftest.c

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trace_seq.c

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trace_stack.c

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trace_stat.c

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trace_stat.h

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trace_syscalls.c

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trace_uprobe.c

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trace.c

tracing: Fix lock inversion in trace_event_enable_tgid_record()

2019-12-27 18:57:40 -08:00

trace.h

Merge android-4.19.56 (e5304c6) into msm-4.19

2019-07-25 13:29:38 -07:00

tracing_map.c

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tracing_map.h

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