Here is a coredump and some analysis with gdb
Core was generated by `./powertop'.
Program terminated with signal 6, Aborted.
#0 0x00007f7f1f7f7a75 in *__GI_raise (sig=<value optimized out>) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
64 ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
in ../nptl/sysdeps/unix/sysv/linux/raise.c
(gdb) bt
#0 0x00007f7f1f7f7a75 in *__GI_raise (sig=<value optimized out>) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1 0x00007f7f1f7fb5c0 in *__GI_abort () at abort.c:92
#2 0x00007f7f1f7f0941 in *__GI___assert_fail (assertion=0x40c111
"strlen(string) > 0", file=<value optimized out>, line=113,
function=0x40d5a8 "push_line_pid") at assert.c:81
#3 0x0000000000402b89 in push_line_pid (string=0x7fffdea8df80 "",
cpu_count=<value optimized out>, disk_count=<value optimized out>,
pid=0x7fffdea8ff80 "3552") at powertop.c:113
#4 0x000000000040a953 in parse_event (ptr=<value optimized out>, verbose=0) at
perf.c:230
#5 0x000000000040aaf6 in parse_data_dirty_buffer () at perf.c:270
#6 0x0000000000405035 in main (argc=<value optimized out>, argv=<value
optimized out>) at powertop.c:1089
(gdb) up
#1 0x00007f7f1f7fb5c0 in *__GI_abort () at abort.c:92
92 abort.c: No such file or directory.
in abort.c
(gdb) up
#2 0x00007f7f1f7f0941 in *__GI___assert_fail (assertion=0x40c111
"strlen(string) > 0", file=<value optimized out>, line=113,
function=0x40d5a8 "push_line_pid") at assert.c:81
81 assert.c: No such file or directory.
in assert.c
(gdb) up
#3 0x0000000000402b89 in push_line_pid (string=0x7fffdea8df80 "",
cpu_count=<value optimized out>, disk_count=<value optimized out>,
pid=0x7fffdea8ff80 "3552") at powertop.c:113
113 assert(strlen(string) > 0);
(gdb) up
#4 0x000000000040a953 in parse_event (ptr=<value optimized out>, verbose=0) at
perf.c:230
230 push_line_pid(line, 0, 1, pid);
(gdb) print line
$1 = "\000hromium-browse\000omium-browse' is writing to file 'History-journal'
on /dev/sda7.\nThis prevents the disk from going to powersave
mode.\000\000\000\227\004\201\037\177\177\000\000\260\342\250\336\377\177\000\000\243\005\201\037\177\177\000\000\002\000\000\000\000\000\000\000\070\000\000\000\061\000\000\000.\000\000\000\070\000\000\000\201\v\201\037\177\177\000\000
113909 10502746\000\000\000\000\000\000\000\240"...
(gdb)
--
powertop: powertop.c:113: push_line_pid: Assertion `strlen(string) > 0' failed.
https://bugs.launchpad.net/bugs/554983
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