Steven Rostedt (VMware) 0948d6294d ftrace: Protect ftrace_graph_hash with ftrace_sync ...

[ Upstream commit 54a16ff6f2 ]

As function_graph tracer can run when RCU is not "watching", it can not be
protected by synchronize_rcu() it requires running a task on each CPU before
it can be freed. Calling schedule_on_each_cpu(ftrace_sync) needs to be used.

Link: https://lore.kernel.org/r/20200205131110.GT2935@paulmck-ThinkPad-P72

Cc: stable@vger.kernel.org
Fixes: b9b0c831be ("ftrace: Convert graph filter to use hash tables")
Reported-by: "Paul E. McKenney" <paulmck@kernel.org>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2020-02-11 04:34:05 -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

ftrace: Protect ftrace_graph_hash with ftrace_sync

2020-02-11 04:34:05 -08:00

Kconfig

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Makefile

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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

trace: Fix preempt_enable_no_resched() abuse

2019-05-02 09:58:54 +02:00

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 process_system_preds()

2020-01-09 10:19:02 +01:00

trace_events_hist.c

tracing: Fix histogram code when expression has same var as value

2020-01-29 16:43:23 +01:00

trace_events_trigger.c

tracing: trigger: Replace unneeded RCU-list traversals

2020-01-29 16:43:18 +01:00

trace_events.c

tracing: Fix lock inversion in trace_event_enable_tgid_record()

2020-01-09 10:19:02 +01:00

trace_export.c

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trace_functions_graph.c

tracing/fgraph: Fix set_graph_function from showing interrupts

2018-12-08 12:59:07 +01:00

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

tracing/fgraph: Fix set_graph_function from showing interrupts

2018-12-08 12:59:07 +01:00

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

tracing/kprobe: Check whether the non-suffixed symbol is notrace

2019-12-31 16:36:02 +01:00

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

tracing: Fix sched switch start/stop refcount racy updates

2020-02-11 04:33:55 -08:00

trace_sched_wakeup.c

kernel/trace: Fix do not unregister tracepoints when register sched_migrate_task fail

2020-01-14 20:06:59 +01:00

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

tracing: Have stack tracer compile when MCOUNT_INSN_SIZE is not defined

2020-01-14 20:06:59 +01:00

trace_stat.c

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trace_stat.h

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trace_syscalls.c

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trace_uprobe.c

tracing/uprobes: Fix output for multiple string arguments

2019-02-20 10:25:48 +01:00

trace.c

tracing: Fix lock inversion in trace_event_enable_tgid_record()

2020-01-09 10:19:02 +01:00

trace.h

ftrace: Protect ftrace_graph_hash with ftrace_sync

2020-02-11 04:34:05 -08:00

tracing_map.c

tracing: Have the histogram compare functions convert to u64 first

2020-01-09 10:19:02 +01:00

tracing_map.h

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