2017-01-05 10:57 GMT+01:00 Christoph Hellwig <hch@xxxxxx>: > On Wed, Jan 04, 2017 at 04:47:03PM +0100, 王金浦 wrote: >> This sounds scary. >> Could you share how to reproduce it, this should go into stable if >> it's the case. > > Step 1: Build your kernel with CONFIG_VMAP_STACK=y > Step 2: issue a SG_IO ioctl, e.g. sg_inq /dev/vda > Thanks, so it's only relevant to kernel > 4.9, as CONFIG_VMAP_STACK only introduced in 4.9 kernel. Regards, Jinpu _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
