prctl$PR_SET_SYSCALL_USER_DISPATCH_ON(0x3b, 0x1, 0x0, 0x0, &(0x7f0000001b00))
r0 = add_key$keyring(&(0x7f00000000c0), &(0x7f0000000100)={'syz', 0x2}, 0x0, 0x0, 0xfffffffffffffffe)
keyctl$chown(0x4, r0, 0xee00, 0x0)