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Alexei Starovoitov 8a141dd7f7 ftrace: Fix modify_ftrace_direct. 
The following sequence of commands:
  register_ftrace_direct(ip, addr1);
  modify_ftrace_direct(ip, addr1, addr2);
  unregister_ftrace_direct(ip, addr2);
will cause the kernel to warn:
[   30.179191] WARNING: CPU: 2 PID: 1961 at kernel/trace/ftrace.c:5223 unregister_ftrace_direct+0x130/0x150
[   30.180556] CPU: 2 PID: 1961 Comm: test_progs    W  O      5.12.0-rc2-00378-g86bc10a0a711-dirty #3246
[   30.182453] RIP: 0010:unregister_ftrace_direct+0x130/0x150

When modify_ftrace_direct() changes the addr from old to new it should update
the addr stored in ftrace_direct_funcs. Otherwise the final
unregister_ftrace_direct() won't find the address and will cause the splat.

Fixes: 0567d6809182 ("ftrace: Add modify_ftrace_direct()")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: https://lore.kernel.org/bpf/20210316195815.34714-1-alexei.starovoitov@gmail.com
2021-03-17 00:43:12 +01:00
..
blktrace.c
block-5.12-2021-02-27
2021-02-28 11:23:38 -08:00
bpf_trace.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
2021-02-16 13:14:06 -08:00
bpf_trace.h
bpf: Use dedicated bpf_trace_printk event instead of trace_printk()
2020-07-13 16:55:49 -07:00
error_report-traces.c
tracing: add error_report_end trace point
2021-02-26 09:41:02 -08:00
fgraph.c
fgraph: Initialize tracing_graph_pause at task creation
2021-01-29 15:07:32 -05:00
ftrace_internal.h
x86/ftrace: Have ftrace trampolines turn read-only at the end of system boot up
2020-05-12 18:24:34 -04:00
ftrace.c
ftrace: Fix modify_ftrace_direct.
2021-03-17 00:43:12 +01:00
Kconfig
tracing: Fix help text of TRACEPOINT_BENCHMARK in Kconfig
2021-03-04 09:45:17 -05:00
kprobe_event_gen_test.c
tracing: Add kprobe event command generation test module
2020-01-30 09:46:28 -05:00
Makefile
tracing: add error_report_end trace point
2021-02-26 09:41:02 -08:00
power-traces.c
…
preemptirq_delay_test.c
kernel: trace: preemptirq_delay_test: add cpu affinity
2021-02-02 17:02:07 -05:00
ring_buffer_benchmark.c
sched,tracing: Convert to sched_set_fifo()
2020-07-29 11:43:53 +02:00
ring_buffer.c
ring-buffer: Add a little more information and a WARN when time stamp going backwards is detected
2021-03-04 09:45:17 -05:00
rpm-traces.c
…
synth_event_gen_test.c
tracing: Remove the useless value assignment in test_create_synth_event()
2020-11-13 12:19:52 -05:00
trace_benchmark.c
tracing: Fix some typos in comments
2020-11-10 20:39:40 -05:00
trace_benchmark.h
…
trace_boot.c
tracing: Disable ftrace selftests when any tracer is running
2020-12-14 12:05:03 -05:00
trace_branch.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_clock.c
…
trace_dynevent.c
tracing/dynevent: Delegate parsing to create function
2021-02-09 12:52:15 -05:00
trace_dynevent.h
tracing/dynevent: Delegate parsing to create function
2021-02-09 12:52:15 -05:00
trace_entries.h
tracing: Fix some typos in comments
2020-11-10 20:39:40 -05:00
trace_event_perf.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_events_filter_test.h
…
trace_events_filter.c
tracing: Clean up after filter logic rewriting
2020-11-16 12:32:34 -05:00
trace_events_hist.c
tracing: Fix some typos in comments
2020-11-10 20:39:40 -05:00
trace_events_inject.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_events_synth.c
tracing: Fix memory leak in __create_synth_event()
2021-03-04 09:45:57 -05:00
trace_events_trigger.c
tracing: Fix event trigger to accept redundant spaces
2020-06-23 21:51:40 -04:00
trace_events.c
Tracing updates for 5.12
2021-02-22 14:07:15 -08:00
trace_export.c
tracing: Fix some typos in comments
2020-11-10 20:39:40 -05:00
trace_functions_graph.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_functions.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_hwlat.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_irqsoff.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_kdb.c
tracing: Rename trace_buffer to array_buffer
2020-01-13 13:19:38 -05:00
trace_kprobe_selftest.c
…
trace_kprobe_selftest.h
…
trace_kprobe.c
Modules updates for v5.12
2021-02-23 10:15:33 -08:00
trace_mmiotrace.c
tracing: Remove definition of DEBUG in trace_mmiotrace.c
2021-02-02 17:02:07 -05:00
trace_nop.c
…
trace_output.c
tracing: Show real address for trace event arguments
2021-02-11 16:31:57 -05:00
trace_output.h
ftrace: Add recording of functions that caused recursion
2020-11-06 08:42:26 -05:00
trace_preemptirq.c
lockdep: fix order in trace_hardirqs_off_caller()
2020-09-14 10:08:07 +02:00
trace_printk.c
Updates for tracing and bootconfig:
2020-10-15 15:51:28 -07:00
trace_probe_tmpl.h
tracing/probe: Support user-space dereference
2019-05-25 23:04:42 -04:00
trace_probe.c
tracing/dynevent: Delegate parsing to create function
2021-02-09 12:52:15 -05:00
trace_probe.h
tracing/dynevent: Delegate parsing to create function
2021-02-09 12:52:15 -05:00
trace_recursion_record.c
ftrace: Add recording of functions that caused recursion
2020-11-06 08:42:26 -05:00
trace_sched_switch.c
tracing: Fix sched switch start/stop refcount racy updates
2020-01-30 09:46:10 -05:00
trace_sched_wakeup.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_selftest_dynamic.c
…
trace_selftest.c
tracing: Disable ftrace selftests when any tracer is running
2020-12-14 12:05:03 -05:00
trace_seq.c
tracing: Remove unused TRACE_SEQ_BUF_USED
2020-01-21 18:39:54 -05:00
trace_stack.c
ftrace: Have the callbacks receive a struct ftrace_regs instead of pt_regs
2020-11-13 12:14:55 -05:00
trace_stat.c
tracing: make tracing_init_dentry() returns an integer instead of a d_entry pointer
2020-09-18 22:17:14 -04:00
trace_stat.h
tracing: Use generic type for comparator function
2019-11-14 13:15:11 -05:00
trace_synth.h
tracing: Add support for dynamic strings to synthetic events
2020-10-05 19:32:18 -04:00
trace_syscalls.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_uprobe.c
tracing/dynevent: Delegate parsing to create function
2021-02-09 12:52:15 -05:00
trace.c
tracing: Skip selftests if tracing is disabled
2021-03-04 09:51:25 -05:00
trace.h
tracing: Remove duplicate declaration from trace.h
2021-03-04 09:44:47 -05:00
tracing_map.c
tracing: Fix some typos in comments
2020-11-10 20:39:40 -05:00
tracing_map.h
tracing: Fix some typos in comments
2020-11-10 20:39:40 -05:00