On 2016/1/31 5:02, Tong Zhang wrote:
reproduce: lzto@objd ~ $ ~/linux/tools/perf/perf record -I -e intel_pt/tsc=1,noretcomp=1/u /bin/ls lzto@objd ~ $ ~/linux/tools/perf/perf script -F event,comm,pid,tid,time,addr,ip,sym,dso,iregs Segmentation fault lzto@objd ~ $ Upon further investigation, it seems that commit 747a9b0a08ae ("Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip") breaks perf tool. __list_del(): tools/include/linux/list.h does not check null pointer dereference
I don't have a Boradwell system, unable to reproduce the fault. Could you please give the output of gdb's bt command? We should try to fix the inappropriate list operation. Thank you.