On 2020/03/05 18:38, Jan Kara wrote: > On Tue 03-03-20 14:15:24, Naresh Kamboju wrote: >> [Sorry for the spam] >> >> Linux-next 5.6.0-rc3-next-20200302 running on arm64 juno-r2 device while >> running LTP syscalls chown tests. >> >> Suspecting commits are (did not do git bisect), >> b1473d5f3d0 fs/buffer.c: dump more info for __getblk_gfp() stall problem >> b10a7ae6565 fs/buffer.c: add debug print for __getblk_gfp() stall problem > > These are almost certainly unrelated. If I'm looking right, the warning is > coming from memalloc_use_memcg() called from alloc_page_buffers() > complaining that memcg to charge is already set. But I don't see how that > would be possible (at least with today's linux-next). Can you reproduce the > problem with today's linux-next? > Already handled as https://lore.kernel.org/linux-mm/20200303162948.a383cb88c4a1b0bfd3817798@xxxxxxxxxxxxxxxxxxxx/ .