Masami Hiramatsu 49e9a5395c tracing/kprobe: Check whether the non-suffixed symbol is notrace ... [ Upstream commit c7411a1a12 ] Check whether the non-suffixed symbol is notrace, since suffixed symbols are generated by the compilers for optimization. Based on these suffixed symbols, notrace check might not work because some of them are just a partial code of the original function. (e.g. cold-cache (unlikely) code is separated from original function as FUNCTION.cold.XX) For example, without this fix, # echo p device_add.cold.67 > /sys/kernel/debug/tracing/kprobe_events sh: write error: Invalid argument # cat /sys/kernel/debug/tracing/error_log [ 135.491035] trace_kprobe: error: Failed to register probe event Command: p device_add.cold.67 ^ # dmesg | tail -n 1 [ 135.488599] trace_kprobe: Could not probe notrace function device_add.cold.67 With this, # echo p device_add.cold.66 > /sys/kernel/debug/tracing/kprobe_events # cat /sys/kernel/debug/kprobes/list ffffffff81599de9 k device_add.cold.66+0x0 [DISABLED] Actually, kprobe blacklist already did similar thing, see within_kprobe_blacklist(). Link: http://lkml.kernel.org/r/157233790394.6706.18243942030937189679.stgit@devnote2 Fixes: 45408c4f92 ("tracing: kprobes: Prohibit probing on notrace function") Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2019-12-31 16:36:02 +01:00
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blktrace.c
bpf_trace.c
ftrace.c	ftrace: Get a reference counter for the trace_array on filter files	2019-10-17 13:45:40 -07:00
Kconfig
Makefile
power-traces.c
preemptirq_delay_test.c
ring_buffer_benchmark.c
ring_buffer.c
rpm-traces.c
trace_benchmark.c
trace_benchmark.h
trace_branch.c
trace_clock.c
trace_entries.h
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
trace_events_filter.c
trace_events_hist.c	tracing: Lock event_mutex before synth_event_mutex	2019-12-05 09:19:49 +01:00
trace_events_trigger.c
trace_events.c	tracing: Lock event_mutex before synth_event_mutex	2019-12-05 09:19:49 +01:00
trace_export.c
trace_functions_graph.c
trace_functions.c
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_kdb.c
trace_kprobe_selftest.c
trace_kprobe_selftest.h
trace_kprobe.c	tracing/kprobe: Check whether the non-suffixed symbol is notrace	2019-12-31 16:36:02 +01:00
trace_mmiotrace.c
trace_nop.c
trace_output.c
trace_output.h
trace_preemptirq.c
trace_printk.c
trace_probe.c
trace_probe.h
trace_sched_switch.c
trace_sched_wakeup.c
trace_selftest_dynamic.c
trace_selftest.c
trace_seq.c
trace_stack.c
trace_stat.c
trace_stat.h
trace_syscalls.c
trace_uprobe.c
trace.c	tracing: use kvcalloc for tgid_map array allocation	2019-12-31 16:36:02 +01:00
trace.h
tracing_map.c
tracing_map.h