On Tue, 27 Jun 2017, Tetsuo Handa wrote: > I hit an unable to invoke the OOM killer lockup shown below. According to > "cpus=2 node=0 flags=0x0 nice=0" part, it seems that cache_reap (in mm/slab.c) > work stuck waiting for disk_events_workfn (in block/genhd.c) work to complete. Cache reaping in SLAB is the expiration of objects since they are deemed to be cache cold after while. Reaping is a tick driven worker thread that calls other functions that are used during regular slab allocation and freeing. Maybe someone added code that can cause deadlocks if invoked from the tick? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
