perf/core improvements and fixes:
- Fix various per event 'max-stack' and 'call-graph=dwarf' issues,
mostly in 'perf trace', allowing to use 'perf trace --call-graph' with
'dwarf' and 'fp' to setup the callgraph details for the syscall events
and make that apply to other events, whilhe allowing to override that on
a per-event basis, using '-e sched:*switch/call-graph=dwarf/' for
instance (Arnaldo Carvalho de Melo)
- Improve the --time percent support in record/report/script (Jin Yao)
- Fix copyfile_offset update of output offset (Jiri Olsa)
- Add python script to profile and resolve physical mem type (Kan Liang)
- Add ARM Statistical Profiling Extensions (SPE) support (Kim Phillips)
- Remove trailing semicolon in the evlist code (Luis de Bethencourt)
- Fix incorrect handling of type _TERM_DRV_CFG (Mathieu Poirier)
- Use asprintf when possible in libtraceevent (Federico Vaga)
- Fix bad force_token escape sequence in libtraceevent (Michael Sartain)
- Add UL suffix to MISSING_EVENTS in libtraceevent (Michael Sartain)
- value of unknown symbolic fields in libtraceevent (Jan Kiszka)
- libtraceevent updates: (Steven Rostedt)
o Show value of flags that have not been parsed
o Simplify pointer print logic and fix %pF
o Handle new pointer processing of bprint strings
o Show contents (in hex) of data of unrecognized type records
o Fix get_field_str() for dynamic strings
- Add missing break in FALSE case of pevent_filter_clear_trivial() (Taeung Song)
- Fix failed memory allocation for get_cpuid_str (Thomas Richter)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
perf record: Fix failed memory allocation for get_cpuid_str
In x86 architecture dependend part function get_cpuid_str() mallocs a
128 byte buffer, but does not check if the memory allocation succeeded
or not.
When the memory allocation fails, function __get_cpuid() is called with
first parameter being a NULL pointer. However this function references
its first parameter and operates on a NULL pointer which might cause
core dumps.
Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Link: http://lkml.kernel.org/r/20180117131611.34319-1-tmricht@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
1 file changed
