perf report: Fix rbtree bug
Ingo Molnar reported: > FYI, i just got this crash (segfault) in perf report after > collecting a long profile from Xorg: > > Starting program: /home/mingo/tip/Documentation/perf_counter/perf report > [Thread debugging using libthread_db enabled] > Detaching after fork from child process 20008. > [New Thread 0x7f92fd62a6f0 (LWP 20005)] > > Program received signal SIGSEGV, Segmentation fault. > 0x000000000041031a in __rb_erase_color (node=0x142c0901, parent=0x0, > root=0x881918) > at util/rbtree.c:143 > 143 if (parent->rb_left == node) It was a problem introduced in this cset: perf report: Fix comm sorting - 8229289b This patch should fix it. Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Acked-by: NPeter Zijlstra <peterz@infradead.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Stephane Eranian <eranian@googlemail.com> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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