On 2024/2/23 12:48, Sergey Senozhatsky wrote: > On (24/02/22 18:27), Yosry Ahmed wrote: >> I also don't see any recent changes in mm/zsmalloc.c that modify this >> code, so maybe it wasn't introduce in 6.7. I will defer to Minchan and >> Sergey, I don't think zswap is an active actor in this bug report. > > Yeah. [1] are the only recent zsmalloc patches I can recall, and those > patches touch zsmalloc locking (zspages migration/compaction). > > https://lore.kernel.org/lkml/20240219-b4-szmalloc-migrate-v1-0-34cd49c6545b@xxxxxxxxxxxxx/ > I think these patches can't go into 6.8.0-rc5, right? So it maybe a bug with the current code of zsmalloc (maybe zswap? I don't know). Tetsuo, could you please check if the config has CONFIG_COMPACTION enabled? Since the first patch of that series did fix a locking bug of migration: (mm/zsmalloc: fix migrate_write_lock() when !CONFIG_COMPACTION) Thanks.
