Messages in this thread | | | From | Ramkumar Ramachandra <> | Date | Wed, 2 Oct 2013 16:36:45 +0530 | Subject | [BUG] perf timechart segfault |
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Hi,
I tried using the `perf timechart` command after a `sudo perf timechart record -- git status`, and it segfaulted. Backtrace follows:
Program received signal SIGSEGV, Segmentation fault. 0x0000000000000000 in ?? () (gdb) bt #0 0x0000000000000000 in ?? () #1 0x000000000047d728 in perf_session_deliver_event (session=session@entry=0x8ea450, event=event@entry=0x7ffff7f13f98, sample=sample@entry=0x7fffffffd530, tool=tool@entry=0x7fffffffd7a0, file_offset=file_offset@entry=8088) at util/session.c:1006 #2 0x000000000047faec in perf_session__process_event (file_offset=8088, tool=0x7fffffffd7a0, event=0x7ffff7f13f98, session=0x8ea450) at util/session.c:1098 #3 __perf_session__process_events (session=session@entry=0x8ea450, data_offset=<optimized out>, data_size=<optimized out>, file_size=635384, tool=tool@entry=0x7fffffffd7a0) at util/session.c:1360 #4 0x000000000047ff81 in perf_session__process_events (self=self@entry=0x8ea450, tool=tool@entry=0x7fffffffd7a0) at util/session.c:1403 #5 0x000000000042f12a in __cmd_timechart (output_name=0x4ee399 "output.svg") at builtin-timechart.c:1009 #6 cmd_timechart (argc=0, argv=0x7fffffffdf20, prefix=<optimized out>) at builtin-timechart.c:1116 #7 0x0000000000419925 in run_builtin (p=p@entry=0x725f90 <commands+240>, argc=argc@entry=1, argv=argv@entry=0x7fffffffdf20) at perf.c:319 #8 0x0000000000419199 in handle_internal_command (argv=0x7fffffffdf20, argc=1) at perf.c:376 #9 run_argv (argv=0x7fffffffdd20, argcp=0x7fffffffdd2c) at perf.c:420 #10 main (argc=1, argv=0x7fffffffdf20) at perf.c:521
I compiled it with EXTRA_CFLAGS="-O0 -g", so all the debugging symbols should be available. Not sure what's going on, or why I needed sudo to record data in the first place.
Any hints?
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