Re: [PATCH] powerpc/powernv/pci: fix a RCU-list lock

2021-02-03 Thread Michael Ellerman
On Sun, 10 May 2020 01:13:47 -0400, Qian Cai wrote: > It is unsafe to traverse tbl->it_group_list without the RCU read lock. > > WARNING: suspicious RCU usage > 5.7.0-rc4-next-20200508 #1 Not tainted > - > arch/powerpc/platforms/powernv/pci-ioda-tce.c:355 RCU-list

[PATCH] powerpc/powernv/pci: fix a RCU-list lock

2020-05-09 Thread Qian Cai
It is unsafe to traverse tbl->it_group_list without the RCU read lock. WARNING: suspicious RCU usage 5.7.0-rc4-next-20200508 #1 Not tainted - arch/powerpc/platforms/powernv/pci-ioda-tce.c:355 RCU-list traversed in non-reader section!! other info that might help