On Tue, Jul 25, 2006 at 05:32:41PM -0700, Chad Reese wrote: > If you're running a 64bit kernel with N32 userspace, shmctl will corrupt > memory in userspace. When copy_shmid_to_user() is called, it copies the > entire kernel shmid_ds into userspace. For a 64bit kernel, this is 88 > bytes. In N32 userspace it is 76 bytes. > > My hack to get around the problem is attached, but I expect someone here > will be able to come up with a better fix. shmid_ds contains a lot of > members that are marked unused. Are these really useless? They need to be there for compatibility with older revisions of the structure - we can increase the size of the structure but not decrease. Talking about compatibility, you change breaks N64 compatibility ... Ralf
