fence_tool gives me, on both of my test machines: fence_domain_add: service register failed relevant syscalls seem to be: (machine 1) socket(PF_BLUETOOTH, SOCK_DGRAM, 3) = 1 ioctl(1, 0x4001780e, 0x9c34050) = -1 EINVAL (Invalid argument) (machine 2) socket(PF_BLUETOOTH, SOCK_DGRAM, 3) = 1 ioctl(1, 0x4001780e, 0x9505050) = -1 ENAMETOOLONG (File name too long) Looking at linux/cluster/cman/sm_user.c:sm_ioctl, it casts 'arg' to a (char *) and then passes it into user_register, which does a direct strlen() on it... which is bad coding style in general, but definitely ain't gonna produce anything remotely useful on a 4G/4G kernel, like the one that ships with Fedora Core 2. I suspect there are more such bugs out there, sometimes I get really unexpected behaviour or things that plain don't seem to work at all. cman+dlm+gfs kernel code is ~2MB, but cman alone is only 400kb, so if anyone else feels like some auditing work, we could do a rough pass over cman in a few days with a few people.. anyone volunteering?
