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Tracing fixes for 5.17-rc1:

Browse source 
- Limit mcount build time sorting to only those archs that
    we know it works for.
 
  - Fix memory leak in error path of histogram setup
 
  - Fix and clean up rel_loc array out of bounds issue
 
  - tools/rtla documentation fixes
 
  - Fix issues with histogram logic
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Merge tag 'trace-v5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pulltracing fixes from Steven Rostedt:

 - Limit mcount build time sorting to only those archs that we know it
   works for.

 - Fix memory leak in error path of histogram setup

 - Fix and clean up rel_loc array out of bounds issue

 - tools/rtla documentation fixes

 - Fix issues with histogram logic

* tag 'trace-v5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Don't inc err_log entry count if entry allocation fails
  tracing: Propagate is_signed to expression
  tracing: Fix smatch warning for do while check in event_hist_trigger_parse()
  tracing: Fix smatch warning for null glob in event_hist_trigger_parse()
  tools/tracing: Update Makefile to build rtla
  rtla: Make doc build optional
  tracing/perf: Avoid -Warray-bounds warning for __rel_loc macro
  tracing: Avoid -Warray-bounds warning for __rel_loc macro
  tracing/histogram: Fix a potential memory leak for kstrdup()
  ftrace: Have architectures opt-in for mcount build time sorting
This commit is contained in:
Linus Torvalds 2022-01-28 19:30:35 +02:00
commit df0001545b
10 changed files with 43 additions and 16 deletions
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5
include/trace/perf.h
View file

@ -23,8 +23,9 @@
#undef __get_rel_dynamic_array
#define __get_rel_dynamic_array(field) \
((void *)(&__entry->__rel_loc_##field) + \
sizeof(__entry->__rel_loc_##field) + \
((void *)__entry + \
offsetof(typeof(*__entry), __rel_loc_##field) + \
sizeof(__entry->__rel_loc_##field) + \
(__entry->__rel_loc_##field & 0xffff))
#undef __get_rel_dynamic_array_len

9
include/trace/trace_events.h
View file

@ -128,7 +128,7 @@ TRACE_MAKE_SYSTEM_STR();
struct trace_event_raw_##name { \
struct trace_entry ent; \
tstruct \
char __data[0]; \
char __data[]; \
}; \
\
static struct trace_event_class event_class_##name;
@ -318,9 +318,10 @@ TRACE_MAKE_SYSTEM_STR();
#define __get_str(field) ((char *)__get_dynamic_array(field))
#undef __get_rel_dynamic_array
#define __get_rel_dynamic_array(field) \
((void *)(&__entry->__rel_loc_##field) + \
sizeof(__entry->__rel_loc_##field) + \
#define __get_rel_dynamic_array(field) \
((void *)__entry + \
offsetof(typeof(*__entry), __rel_loc_##field) + \
sizeof(__entry->__rel_loc_##field) + \
(__entry->__rel_loc_##field & 0xffff))
#undef __get_rel_dynamic_array_len