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linux/kernel/trace
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Masami Hiramatsu 4dd537aca2 tracing: uprobes: Re-enable $comm support for uprobe events 
Since commit 533059281ee5 ("tracing: probeevent: Introduce new
argument fetching code") dropped the $comm support from uprobe
events, this re-enables it.

For $comm support, uses strlcpy() instead of strncpy_from_user()
to copy current task's comm. Because it is in the kernel space,
strncpy_from_user() always fails to copy the comm.
This also uses strlen() instead of strnlen_user() to measure the
length of the comm.

Note that this uses -ECOMM as a token value to fetch the comm
string. If the user-space pointer points -ECOMM, it will be
translated to task->comm.

Link: http://lkml.kernel.org/r/155723734162.9149.4042756162201097965.stgit@devnote2

Fixes: 533059281ee5 ("tracing: probeevent: Introduce new argument fetching code")
Reported-by: Andreas Ziegler <andreas.ziegler@fau.de>
Acked-by: Andreas Ziegler <andreas.ziegler@fau.de>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2019-05-08 12:15:11 -04:00
..
blktrace.c
blkcg: annotate implicit fall through
2019-03-13 14:31:12 -06:00
bpf_trace.c
Merge branch 'linus' into perf/core, to pick up fixes
2019-02-28 08:27:17 +01:00
fgraph.c
tracing: Fix ftrace_graph_get_ret_stack() to use task and not current
2018-12-22 08:21:03 -05:00
ftrace_internal.h
ftrace: Create new ftrace_internal.h header
2018-12-08 20:54:06 -05:00
ftrace.c
ftrace: Do not process STUB functions in ftrace_ops_list_func()
2019-04-11 11:46:13 -04:00
Kconfig
kbuild: compute false-positive -Wmaybe-uninitialized cases in Kconfig
2019-02-27 21:43:20 +09:00
Makefile
tracing: Add unified dynamic event framework
2018-12-08 20:54:09 -05:00
power-traces.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
preemptirq_delay_test.c
tracing: Use trace_clock_local() for looping in preemptirq_delay_test.c
2018-10-17 15:35:33 -04:00
ring_buffer_benchmark.c
tracing: Add SPDX License format tags to tracing files
2018-08-16 19:08:06 -04:00
ring_buffer.c
ring-buffer: Fix ring buffer size in rb_write_something()
2019-04-02 18:24:06 -04:00
rpm-traces.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
trace_benchmark.c
rcu: Rename cond_resched_rcu_qs() to cond_resched_tasks_rcu_qs()
2018-05-15 10:27:29 -07:00
trace_benchmark.h
tracing: Fix SPDX format headers to use C++ style comments
2018-08-16 19:08:06 -04:00
trace_branch.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
trace_clock.c
tracing: Add SPDX License format tags to tracing files
2018-08-16 19:08:06 -04:00
trace_dynevent.c
tracing: initialize variable in create_dyn_event()
2019-03-26 08:35:36 -04:00
trace_dynevent.h
tracing: Add unified dynamic event framework
2018-12-08 20:54:09 -05:00
trace_entries.h
tracing: Change the function format to display function names by perf
2019-02-11 14:53:43 -05:00
trace_event_perf.c
tracing/perf: Use strndup_user() instead of buggy open-coded version
2019-02-21 10:35:10 -05:00
trace_events_filter_test.h
tracing: Fix SPDX format headers to use C++ style comments
2018-08-16 19:08:06 -04:00
trace_events_filter.c
tracing: Have the error logs show up in the proper instances
2019-04-08 09:22:44 -04:00
trace_events_hist.c
tracing: Have the error logs show up in the proper instances
2019-04-08 09:22:44 -04:00
trace_events_trigger.c
tracing: Add trace_array parameter to create_event_filter()
2019-04-08 09:22:28 -04:00
trace_events.c
tracing: Kernel access to Ftrace instances
2019-04-02 18:24:06 -04:00
trace_export.c
tracing: Add trigger file for trace_markers tracefs/ftrace/print
2018-05-29 08:28:53 -04:00
trace_functions_graph.c
tracing: Put a margin between flags and duration for wakeup tracers
2019-02-06 11:56:19 -05:00
trace_functions.c
tracing: Update stack trace skipping for ORC unwinder
2018-01-23 15:57:00 -05:00
trace_hwlat.c
tracing: Add SPDX License format tags to tracing files
2018-08-16 19:08:06 -04:00
trace_irqsoff.c
The biggest change for this release is in the histogram code.
2019-03-11 17:01:32 -07:00
trace_kdb.c
tracing: kdb: Allow ftdump to skip all but the last few entries
2019-05-02 21:32:55 -04:00
trace_kprobe_selftest.c
selftest/ftrace: Move kprobe selftest function to separate compile unit
2018-07-30 18:41:04 -04:00
trace_kprobe_selftest.h
tracing: Fix SPDX format headers to use C++ style comments
2018-08-16 19:08:06 -04:00
trace_kprobe.c
tracing: Use tracing error_log with probe events
2019-04-02 18:24:07 -04:00
trace_mmiotrace.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
trace_nop.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
trace_output.c
tracing: Simplify printf'ing in seq_print_sym
2018-12-22 08:21:06 -05:00
trace_output.h
tracing: Fix SPDX format headers to use C++ style comments
2018-08-16 19:08:06 -04:00
trace_preemptirq.c
kprobes: Prohibit probing on hardirq tracers
2019-02-13 08:16:40 +01:00
trace_printk.c
tracing: Trivia spelling fix containerof() -> container_of()
2018-09-26 12:21:00 +03:00
trace_probe_tmpl.h
tracing: probeevent: Correctly update remaining space in dynamic area
2019-02-11 15:58:30 -05:00
trace_probe.c
tracing: Have the error logs show up in the proper instances
2019-04-08 09:22:44 -04:00
trace_probe.h
tracing: uprobes: Re-enable $comm support for uprobe events
2019-05-08 12:15:11 -04:00
trace_sched_switch.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
trace_sched_wakeup.c
tracing: Add conditional snapshot
2019-02-20 13:51:06 -05:00
trace_selftest_dynamic.c
ftrace: Mark function tracer test functions noinline/noclone
2018-01-23 15:57:29 -05:00
trace_selftest.c
function_graph: Have selftest also emulate tr->reset() as it did with tr->init()
2019-04-21 19:46:56 -04:00
trace_seq.c
tracing: Add SPDX License format tags to tracing files
2018-08-16 19:08:06 -04:00
trace_stack.c
tracing: Use the return of str_has_prefix() to remove open coded numbers
2018-12-22 22:52:30 -05:00
trace_stat.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
trace_stat.h
tracing: Fix SPDX format headers to use C++ style comments
2018-08-16 19:08:06 -04:00
trace_syscalls.c
Tracing updates for 4.15:
2017-11-17 14:58:01 -08:00
trace_uprobe.c
tracing: uprobes: Re-enable $comm support for uprobe events
2019-05-08 12:15:11 -04:00
trace.c
tracing: Add trace_total_entries() / trace_total_entries_cpu()
2019-05-02 21:32:31 -04:00
trace.h
tracing: Add trace_total_entries() / trace_total_entries_cpu()
2019-05-02 21:32:31 -04:00
tracing_map.c
tracing: Add SPDX License format tags to tracing files
2018-08-16 19:08:06 -04:00
tracing_map.h
tracing: Fix SPDX format headers to use C++ style comments
2018-08-16 19:08:06 -04:00