On 1/15/23 6:19 AM, Homin Rhee wrote: > Hello, > I'm iCAROS7 and my syzkaller hit follow KASAN bug via UAF. > > Target kernel commit: 0bf913e07b37 > Target arch: amd64 > Host syzkaller version: 96166539c4c242fccd41c7316b7080377dca428b > Host CPU: Intel i7 12700K > Host OS: Kubuntu 22.04.1 LTS (5.18.19-051819-generic) This is a duplicate, see the mailing list. But in any case, it's fixed as of: commit e6db6f9398dadcbc06318a133d4c44a2d3844e61 Author: Jens Axboe <axboe@xxxxxxxxx> Date: Sun Jan 8 10:39:17 2023 -0700 io_uring/io-wq: only free worker if it was allocated for creation caused by a buggy commit that went into 6.2-rc3. -- Jens Axboe