On Mon, 3 Feb 2020 at 19:22, Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> wrote: > > On 2/3/20 2:48 PM, Marc Kleine-Budde wrote: > >>> WARNING: CPU: 0 PID: 293 at lib/refcount.c:25 refcount_warn_saturate+0x108/0x174 > >>> refcount_t: addition on 0; use-after-free. > >> > >> FYI, > >> This issue noticed in our Linaro test farm > >> On linux next version 5.5.0-next-20200203 running on beagleboard x15 arm device. > >> > >> Thanks for providing fix for this case. > > Please look closely at your backtraces, they are totally unrelated. It > seems the whole culprit in your testcase fails with: > > > [ 0.000000] OF: ERROR: Bad of_node_put() on /ocp/interconnect@4a000000/segment@0/target-module@8000/cm_core@0/l4per-cm@1700/l4per-clkctrl@28 I have reported on another email regarding this dtb issue. > > ...the rest are subsequent faults. > > > Can we add your Tested-by to the patch? We generally test linux mainline, linux-next, LTS 5.4, 4.19, 4.14, 4.9 and 4.4 branches. When issue like this found and with a proposed fix patch. I do schedule it for apply patch and test and report it back on email thread. - Naresh
